Journal articles: 'Exhaust gas cleaning'

1

Meyer, Sven, Otto Carlowitz, Matthias Napp, and Sven Gutperl. "Adsorptive smoothers for exhaust gas cleaning." Adsorption 23, no. 2-3 (October 6, 2016): 211–16. http://dx.doi.org/10.1007/s10450-016-9822-9.

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Levitskii, Yu N., and A. L. Breitbarg. "Wet-type exhaust gas cleaning apparatus." Chemical and Petroleum Engineering 27, no. 3 (March 1991): 165–68. http://dx.doi.org/10.1007/bf01150090.

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HIROSE, Yuta, Hiroyuki KITAHARA, and Yukihiko Matsumura. "Cleaning of exhaust gas from pellet stove." Proceedings of Conference of Chugoku-Shikoku Branch 2020.58 (2020): 07c1. http://dx.doi.org/10.1299/jsmecs.2020.58.07c1.

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Kadyrov, A. S., A. A. Ganyukov, B. K. Sarsembekov, Zh Zh Zhunusbekova, and K. A. Sinelnikov. "Investigation of the process of ultrasonic cleaning of exhaust gases from an internal combustion engine." BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series 137, no. 4 (2021): 18–28. http://dx.doi.org/10.32523/2616-7263-2021-137-4-18-28.

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The authors have developed and investigated a mathematical model of the operation of an ultrasonic automobile muffler, which allows calculating the necessary parameters for effective work on cleaning the exhaust gas of motor transport. An experiment has been conducted to prove the effectiveness of ultrasonic exposure for cleaning the exhaust gas of motor vehicles. There are considered forces acting on a gas particle moving in an ultrasonic automobile muffler, the values of the velocities of motion of coagulated particles horizontally and vertically. There are determined the coagulation coefficient in an ultrasonic muffler. The effectiveness of ultrasonic exposure to the exhaust gas of motor transport has been proven during the experiment and has a promising development of this direction of cleaning aerosols from harmful impurities by the proposed method. According to the results of the experiment, the concentration of hydrocarbon CH decreased by more than 2 times, at 1000 rpm from 50 ppm/min to 27 ppm/min.

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DOROKHOV, ALEKSEI S. "EXHAUST GAS HEAT UTILIZATION IN SEPARATING WORKING UNITS OF ROOT CROP AND POTATO HARVESTERS." Agricultural engineering, no. 2 (2022): 4–7. http://dx.doi.org/10.26897/2687-1149-2022-2-4-7.

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Harvesting potatoes and vegetable crops coincides with the seasonal peak of precipitation. As a result, the factor complicates the cleaning of marketable products from highly humid soil impurities, which cause the working surface sticking of cleaning devices and decrease their performance. To eliminate this problem, the authors carried out theoretical studies of the separation system working on thermal energy for cleaning the exhaust gases of the power plant. The goal was to determine the design and technological parameters of its individual functioning elements. Relationships were established to determine the separating surface area of slotted cleaning units – a bar elevator and a cleaning sprocket. The analysis helped determine the inter-axial distance between the deflectors, the inter-deflector distance, the inter-conveyor distance, and the translational speed of the rod elevator. The authors obtained the heat flow distribution pattern of exhaust gases on the separating units of root crop and potato harvesters. The study outcomes – the operating modes and technological parameters of the separating system using the heat of exhaust gases for harvesting root crops and potatoes and the heat flow distribution pattern of exhaust gases over the separating surface – will be helpful for further experimental research to improve individual units for harvesting root crops.

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DOROKHOV, ALEKSEI S. "EXHAUST GAS HEAT UTILIZATION IN SEPARATING WORKING UNITS OF ROOT CROP AND POTATO HARVESTERS." Agricultural engineering, no. 2 (2022): 4–7. http://dx.doi.org/10.26897/2687-1149-2022-2-4-7.

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Harvesting potatoes and vegetable crops coincides with the seasonal peak of precipitation. As a result, the factor complicates the cleaning of marketable products from highly humid soil impurities, which cause the working surface sticking of cleaning devices and decrease their performance. To eliminate this problem, the authors carried out theoretical studies of the separation system working on thermal energy for cleaning the exhaust gases of the power plant. The goal was to determine the design and technological parameters of its individual functioning elements. Relationships were established to determine the separating surface area of slotted cleaning units – a bar elevator and a cleaning sprocket. The analysis helped determine the inter-axial distance between the deflectors, the inter-deflector distance, the inter-conveyor distance, and the translational speed of the rod elevator. The authors obtained the heat flow distribution pattern of exhaust gases on the separating units of root crop and potato harvesters. The study outcomes – the operating modes and technological parameters of the separating system using the heat of exhaust gases for harvesting root crops and potatoes and the heat flow distribution pattern of exhaust gases over the separating surface – will be helpful for further experimental research to improve individual units for harvesting root crops.

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7

Yefimov, Olexander, Valerii Kavertsev, and Oleksandr Zhidetskyi. "Modern Solutions for the Reconstruction of Gas Exhaust Ducts of Converters Operating in Ukraine." NTU "KhPI" Bulletin: Power and heat engineering processes and equipment, no. 1 (October 28, 2021): 25–28. http://dx.doi.org/10.20998/2078-774x.2021.01.04.

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Nowadays most of the installed gas cleaning equipment of oxygen converters of metallurgical plants performs cleaning out of emissions of solid particles with final concentrations higher than acceptable. The inconsistency of the efficiency of the BOF-gas purification with the new emission standards entails the rejection of the emission permit and as a consequences the shutdown of metallurgical plants as well as the loss of the sales markets. In order to prevent the shutdown of the main shops of the metallurgical plants with the simultaneous implementation of appropriate environmental protection measures, it is important to launch the reconstruction of all gas-cleaning units of the converter exhaust ducts. The first element of the BOF-gas cooling and purification system is the BOF-gas cooler, its equipment is in close connection with the process equipment, thus the technological mode of steel production fully depends on its operating mode. The article describes the options of modernization of the exhaust duct of HRSG installed in the BOF-gas cleaning system. Besides, two options of BOF-gas cleaning system presented. In addition, two options of HRSG design: the old one and modernized – were compared.

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Nitskaya, Svetlana G., K. R. Smolyakova, and Irina V. Shmidt. "Optimizing the Performance of Electroplating Gas-Cleaning Equipment." Solid State Phenomena 299 (January 2020): 792–97. http://dx.doi.org/10.4028/www.scientific.net/ssp.299.792.

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Electroplating industry has by-products, most of which are harmful. The paper considers the issue of removing aerosol emissions during chrome coating. We developed a droplet separator, which was granted a patent for a useful model. Based on the model, we proposed a stage-by-stage technical procedure for cleaning gas-air mixture to optimize the performance of gas-cleaning equipment during hard chrome coating. We calculated the amounts of water vapor and chromic anhydride which is released during chrome plating without cleaning and when using the developed procedure for gas mixture cleaning. We determined maximum surface concentrations of pollutants in exhaust gases after cleaning.

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Czajkowska, Aleksandra. "Installations for cleaning exhaust fumes from dust–gas pollutants." Environmental Protection and Natural Resources 29, no. 4 (December 1, 2018): 26–32. http://dx.doi.org/10.2478/oszn-2018-0019.

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Abstract This article shows the methods and techniques that are used for cleaning exhaust fumes from dust–gas particles. The pollutants come from a complicated electricity production process in a thermal power station, whose main fuel is a hard coal or a brown coal. In the recent years, using purification installations has been the result of changing regulations in the field of environmental protection and increasing public awareness. The methods are aimed to reduce nitrogen oxides, sulphur oxides and dust emissions to the environment, not exceeding the emission limit values for individual chemical compounds.

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Inui, Takashi, Masaya Tabaru, Yukio Aoki, and Akinori Zukeran. "Miniaturization Technology of Exhaust Gas Cleaning System (SOx Scrubber)." Journal of The Japan Institute of Marine Engineering 50, no. 3 (2015): 324–31. http://dx.doi.org/10.5988/jime.50.324.

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Akasaki, Takashi. "Infrasound Cleaning Device for Boiler and Exhaust Gas Economizer." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 22, no. 9 (1987): 634–39. http://dx.doi.org/10.5988/jime1966.22.634.

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Zhu, Yimin, Xiaojia Tang, Tie Li, Yangyuan Ji, Quan Liu, Lin Guo, and Jiao Zhao. "Shipboard trials of magnesium-based exhaust gas cleaning system." Ocean Engineering 128 (December 2016): 124–31. http://dx.doi.org/10.1016/j.oceaneng.2016.10.004.

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13

Plotnikov, Leonid, Boris Zhilkin, and Yuriy Brodov. "Improved Cleaning of the Engine Cylinder from the Exhaust Gas Using the Active Ejection in the Exhaust Tract." Applied Mechanics and Materials 792 (September 2015): 553–58. http://dx.doi.org/10.4028/www.scientific.net/amm.792.553.

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The results of experimental study of the exhaust process of the piston internal combustion engine are presented in the article. A method for improving the cleaning of the cylinder from the exhaust gas on the basis of the effect the ejection is proposed in the paper. Dependences of change of the instantaneous gas velocity on the angle of rotation of the crankshaft in the exhaust tract of a different configuration (with ejector and without it) are listed in the article.

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N.V, Byshov, Bachurin A.N, Bogdanchikov I.Yu, Oleynik D.O, Yakunin Yu.V., and Nelidkin A.V. "Method and Device for Reducing the Toxicity of Diesel Engine Exhaust Gases." International Journal of Engineering & Technology 7, no. 4.36 (December 9, 2018): 920. http://dx.doi.org/10.14419/ijet.v7i4.36.24922.

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The aim of the article is to develop a method and a device for reducing the toxicity of exhaust gases of diesel engines and reducing noise taking into account the current mode of operation of the engine. This is done with the help of installing a liquid catalyst (LC) into the exhaust system, ensuring the processes of trapping, chemical bonding and neutralization of toxic components and soot particles in the aerosol chamber while the vortex flow is being processed by a neutralizing solution supplied under pressure. Then the flow is divided into phases and toxic components and soot are separated in the centrifugal swirl drop separator (SDS).The developed and tested design of an exhaust gas cleaning device installed instead of the standard D-120 engine exhaust system and an automated cleaning process control system make it possible to reduce the toxicity of exhaust gases (EG): nitrogen oxides by 40 %, hydrocarbons by 43 % and soot by 70 %. The noise level of its work in enclosed spaces was reduced by 16–22 %. The device also had low gas-dynamic resistance.The investigation methodology is based on the use of modern methods and measuring devices. Exhaust gas tester META “Autotest CO – CH – CO2 – O2 – λ – NOx” was used to measure the toxicity of exhaust gases. To measure smoking at the exhaust of the diesel engine, the opacity meter META-01MP was used. The gas flow velocity was measured with ATT-1004 thermo-anemometer, the noise level of the tractor was recorded with noise and vibration meter VSHV–003–M2, and the fuel consumption with SIRT-1 meter.Theoretical studies were carried out on the basis of the laws of gas dynamics, the modern theory of statistical analysis, and experiment planning techniques. When developing an experimental LC model, dependencies were obtained, which allow to achieve the optimal design and technological parameters of the wet cleaning system for diesel exhaust gases.The optimization of the design parameters and the processing of experimental data were carried out with the help of modern software using the methods of mathematical statistics using computers.The current methods of reducing the toxicity of engines consist primarily in improving the design of engines, in order to influence the nature of the working process, the use of alternative fuels and additives, exhaust gas recirculation, as well as installing various types of exhaust gas catalytic systems. Measures related to the introduction of constructive changes in engines require some major restructuring of the industry, which is difficult to achieve in modern conditions. Alternative fuels have not yet been widely used in agriculture. Therefore, today the most effective and acceptable means of achieving environmental standards is the installation of various mobile catalysts in the exhaust system, as well as devices for trapping soot particles. The use of this exhaust gas cleaning system for diesel engines functioning in enclosed spaces can significantly improve the working conditions of the personnel and have a slight effect on the power and fuel-economic performance of the power unit, reducing the power of the D-120 engine of the T-30 tractor equipped with an upgraded exhaust system when taking external speed characteristics averaged 1.6 %, the torque was 1.5 % and the increase in specific fuel consumption was 1.8 %.In this paper we used materials from scientific publications indexed by bibliographic abstract databases of Scopus and Web of Science.

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Kuroki, Tomoyuki, Shunsuke Nishii, Takuya Kuwahara, and Masaaki Okubo. "Nanoparticle removal and exhaust gas cleaning using gas-liquid interfacial nonthermal plasma." Journal of Electrostatics 87 (June 2017): 86–92. http://dx.doi.org/10.1016/j.elstat.2017.04.007.

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16

Yamada, Yuji, Tomonori Miyake, Kojiro Ito, and Hirofumi Kamon. "Cleaning of Waste Incinerator Exhaust Gas by Turbo Chemical Baghouse." KAGAKU KOGAKU RONBUNSHU 47, no. 4 (July 20, 2021): 104–10. http://dx.doi.org/10.1252/kakoronbunshu.47.104.

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Stehmann, Friederike Maria, Stefan Jahnke, Charlotte Balmforth-Slater, and Stephan Scholl. "Adsorptive Exhaust Gas Cleaning for Recycling of Li-Ion-Batteries." ECS Transactions 75, no. 20 (January 6, 2017): 3–17. http://dx.doi.org/10.1149/07520.0003ecst.

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Stehmann, F., S. Jahnke, C. Balmforth-Slater, and S. Scholl. "Adsorptive Exhaust Gas Cleaning for Recycling of Li-Ion-Batteries." Journal of The Electrochemical Society 164, no. 4 (2017): A622—A629. http://dx.doi.org/10.1149/2.0631704jes.

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19

Ristea, Marian, Adrian Popa, and Ionut Cristian Scurtu. "Computational Fluid Dynamics Simulation Approach for Scrubber Wash Water pH Modelling." Energies 15, no. 14 (July 15, 2022): 5140. http://dx.doi.org/10.3390/en15145140.

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In the current article, we will use a CFD approach for the scrubber wash water dilution simulation, by considering the current MEPC (Marine Environment Protection Committee, a subsidiary of IMO—International Maritime Organization) regulations that are in force. The necessity for scrubber wash water pH modelling and its importance in the current environmental framework is emphasized. The presented 3D model is considered as a 400 mm hydraulic diameter fluid domain with two outlets and a discharge water flow rate of 3050 m3/h for the considered pH value of 3, obtained within a state-of-the-art exhaust gas scrubber solution developed by a major EGCS (Exhaust Gas Cleaning Systems) supplier. The CFD study was developed by considering a k-ε turbulence model. In order to achieve accurate results, a structured mesh with two levels of refinement volumes was realized. Based on the obtained data and the various parameters discussed, the paper presents a way to investigate the optimal results for further analytical research of the scrubber washwater dilution process within the exhaust gas cleaning system.

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Legkii, Alexander, Natalya Karapuzova, Alexei Kudashev, Vladimir Zlobin, and Oksana Vlasova. "Environmental efficiency investigation of a gas turbine unit." E3S Web of Conferences 281 (2021): 09017. http://dx.doi.org/10.1051/e3sconf/202128109017.

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A method for purifying the gas-air mixture of a gas turbine unit and a waste-heat boiler is considered [1-3]. This work describes the principle of a gas-turbine plant and a waste-heat boiler operation using a catalytic afterburner, with the help of which a more complete process of carbon dioxide and nitrogenous compounds release occurs. Also, as a result of the exhaust gas-air mixture deeper cleaning process, there is a decrease in emissions within the maximum admissible concentrations (MAC), namely, by the amount of nitrogen and carbon oxides [4–7]. That allows to reduce the number of harmful substances, oxides of nitrogenous and carbon compounds, emitted into the environment. A scheme for cleaning a catalytic afterburner using rotary mesh devices, followed by disposal of carbon deposits and soot substances from the cleaning chamber is shown. This makes it possible to perform a stable ion exchange process, reducing the exhaust gases combustion products amount. It is proposed in this article to use mesh devices in the afterburner, treated with active substances by the method of ion implantation, as one of the most promising methods for modifying mesh surfaces. These processes occurring when the gas-air mixture passes through the afterburner, can reduce MAC emissions for various options for utilizing the discharge fuel mixture of a gas turbine unit (GTU) and heat supply to the waste heat boiler.

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Kadyrov, A. S., B. K. Sarsembekov, and A. B. Kukisheva. "Planning an experiment for cleaning exhaust gases with ultrasound." Russian Automobile and Highway Industry Journal 18, no. 1 (March 30, 2021): 86–92. http://dx.doi.org/10.26518/2071-7296-2021-18-1-86-95.

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Introduction. The article deals with the protection of the environment from harmful components of the exhaust gases of a motor vehicle. In order to solve this problem, it is proposed to develop an additional device to the exhaust system of an internal combustion engine, based on the ultrasonic coagulation cleaning method.Materials and methods. Due to the need for an environmentally friendly vehicle exhaust system, an experiment is planned to determine the particle gas settling rate on the ultrasonic stand. The correct setting of the experiment requires a preliminary theoretical analysis and a reduction in the number of parameters influencing the experiment. At the time of the experiment, the number of parameters considered should reflect the main processes and their interactions fairly accurately. However, ultrasonic coagulation depends on most parameters, such as particle settling velocity, ultrasonic wave pressure, oscillation amplitude, ultrasonic frequency, particle radius, dynamic viscosity, gravity acceleration and particle mass, which can complicate and increase the time for experimentation. The method of similarity theory and dimensional analysis was used to reduce the set of variables. This method reduces the number of experiments and saves time, costs and other resources spent on the experiment with a large number of parameters.Results. As a result, a minimum number of dimensional criteria were obtained to improve the efficiency of the ultrasonic screen processing of experimental data.Conclusion. Thus, the dimensionless criteria obtained make it possible to draw up a plan for an experiment to determine the settling rate of car exhaust gas particles on an ultrasonic stand and confirm the applicability of the ultrasonic coagulation treatment method.

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Zheng, Yi, Wei Hong Xia, and Ping Cao. "Developing of Air Pollution Control Engineering." Advanced Materials Research 663 (February 2013): 831–35. http://dx.doi.org/10.4028/www.scientific.net/amr.663.831.

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Air pollution control engineering is a compulsory special course for students whose major is Environmental Engineering. Through leaning this course, the students should know air pollutants and environmental quality standard, air pollution and weather, air diffusion mode and estimation of pollutant concentration, chimney height design, air pollution factors and control principles, basic methods, foundation of dust-cleaning technology, performance of dust-cleaner, mechanic cleaner, wet dust-cleaner, filter cleaner, electric cleaner, adsorption, catalytic transformation, treatment of exhaust gas containing SO2, treatment of exhaust gas containing NOx, treatment of exhaust gas containing fluorine, treatment of organic exhaust gas, treatment of tail gases, treatment of odor. This paper first analyzes the characteristics and probes the problems of this course prior to construction. Then it proposes a developing plan for the course: description of teaching contents prior to construction, aim for this class and construction, improvement of teaching methods and modes, and etc.

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23

Корниенко, Виктория Сергеевна, Роман Николаевич Радченко, and Юрий Георгиевич Щербак. "УЛУЧШЕНИЕ ЭКОЛОГИЧЕСКИХ ПОКАЗАТЕЛЕЙ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ ИСПОЛЬЗОВАНИЕМ СКРУББЕРНЫХ ТЕХНОЛОГИЙ И ЭФФЕКТА "МИКРОВЗРЫВОВ" КАПЕЛЬ ВОДОТОПЛИВНОЙ ЭМУЛЬСИИ." Aerospace technic and technology, no. 8 (August 31, 2019): 68–72. http://dx.doi.org/10.32620/aktt.2019.8.10.

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The rules of international organizations in the field of environmental protection are consistently tightening the requirements for the level of harmful emissions into the atmosphere from both stationary and ship power plants (SPP). To ensure this level, it is necessary to use wet scrubber technology and a hybrid system when used simultaneously or sequentially. The study aims to develop a wet scrubber scheme for сomplex exhaust gas cleaning system for an internal combustion engine (ICE). Experimental studies have shown that at the end of the combustion zone of a water-fuel emulsion (WFE) with a water content of 30 % due to the influence of intense turbulence created during microexplosions of WFE droplets in the zone of active combustion in gases, an equimolar NO2 : NO ratio is created automatically (or almost this). It is required to enhance the absorption properties of exhaust gases in front of the scrubber. It is established that when WFE is burnt with water content Wr = 30 %, the content of toxic ingredients in the exhaust gases in front of the scrubber will be at a much lower level compared to the cleaning system at Wr = 2 %. A scheme of a wet scrubber has been developed, which allows to clean exhaust gases from three toxic exhaust gas ingredients simultaneously with heating water to exhaust gas boiler and drying wet gases after a wet scrubber due to the heat of the intermediate coolant. It has been established that the heat of this intermediate coolant is sufficient not only to heat the feed water of the exhaust gas boiler, but also to provide a hot water supply system for the ship, since in the scrubber, as a result of exhaust water vapor condensation up to 8 % of the lower combustion heat of the fuel burned power units. Analysis of the calculated studies showed that the using of a wet scrubber reduces the NOx content from 258 ppm to 52 ppm, SO2 - from 107 ppm to 22 ppm, CO2 - from 3.1 % to 0.93 %. The developed wet scrubber scheme can be used to clean the exhaust gases of internal combustion engines from toxic ingredients and to provide the necessary level of exhaust gas purification recommended by the IMO (International Maritime Organization).

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Zvegintsev, Valery. "Penetration of a Pulsed Gas Jet through a Package of Heat Exchange Tubes." Aerospace 9, no. 8 (July 27, 2022): 404. http://dx.doi.org/10.3390/aerospace9080404.

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The slagging of heating surfaces by fly ash significantly complicates the long term operation of solid-fuel boilers. Gas pulse technologies offer a potentially convenient, inexpensive, yet efficient way for online slag deposits removal. The creation and application of real boiler cleaning systems using gas pulse technologies is a relatively new direction in the energy sector and requires scientific research on various aspects. In this work, the numerical investigation of the gas-dynamic flow arising when the package of heat-exchange tubes is blown with single air jet created by a pneumopulse cleaning system has been carried out. The forces acting on the heat-exchange tubes located at distances 1.0 m and 2.0 m from the exhaust nozzle with various configurations of tubes in the package have been determined. It is shown that an increase in the pressure of the generated air jet makes it possible to significantly increase the acting forces at large distances from the exhaust nozzle. The results of this study and similar calculations for real geometry will increase the validity of engineering solutions used in the development of pneumopulse cleaning systems for large power boilers.

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Корниенко, Виктория Сергеевна, and Роман Николаевич Радченко. "ИСПОЛЬЗОВАНИЕ ЦИКЛОНА И ЭФФЕКТА "МИКРОВЗРЫВОВ" КАПЕЛЬ ВОДОТОПЛИВНОЙ ЭМУЛЬСИИ ПРИ КОМПЛЕКСНОЙ ОЧИСТКЕ ВЫХЛОПНЫХ ГАЗОВ ДВИГАТЕЛЯ ВНУТРЕННЕГО СГОРАНИЯ." Aerospace technic and technology, no. 4 (August 31, 2019): 15–19. http://dx.doi.org/10.32620/aktt.2019.4.03.

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Obtaining additional energy due to the deep utilization of the internal combustion engine (ICE) heat losses al-lows saving fuel used for the operation of the ship's power plant. This accordingly leads to a reduction of the emissions of harmful substances into the atmosphere, contributes to meet the more stringent standards of the International Maritime Organization (IMO) governing the limits of these emissions. The study aims to develop the system of complex exhaust gas cleaning for an internal combustion engine (ICE). For solving the tasks in the technology of proposed method there were 6 stages of technological process envisaged. Based on experimental and theoretical studies, a setup for complex exhaust gas cleaning using a cyclone and the effect of "microexplosions" of a water-fuel emulsion (WFE) droplet was developed. It has been established that as a result of activated WFE combustion we obtain at the engine outlet exhaust gases of a corresponding composition with a reduced amount of toxic ingredients down to 35 % and below and most importantly – an equimolar ratio of NO2 /NO to NOx. Experimental studies have shown that in the condensate acid under these conditions, an average concentration of about 57 % is established, which ensures a sharp increase in the absorption of SO2 and NOx. The presence of an equimolar (or almost this) NO2 /NO ratio in gases ensures the passivation of the condensation surface in exhaust gas boiler (EGB) from carbon steel. This ensures a sharp decrease in the low-temperature corrosion intensity, an increase in the operating reliability of condensation surfaces and the possibility of a sharp increase in the engine exhaust gas utilization depth to 80...90 °C instead of 160 °C. For the final gas cleaning, it was proposed to install a venturi scrubber and a cyclone-absorber on the gas path of ICE. Based on experimental studies, it has been established that the installation of a condensation heating surface in the EGB reduces the NOx content in gases by 55 %, SO2 - by 50 %, and the content of solid particles - by 3 times. The developed complex system can be used to clean the ICE gases to the level recommended by IMO.

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Takahashi, Chiori, and Akiko Masuda. "IMO Exhaust Gas Cleaning System Guidelines - Washwater Discharge Criteria and Monitoring." Journal of The Japan Institute of Marine Engineering 50, no. 3 (2015): 354–59. http://dx.doi.org/10.5988/jime.50.354.

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Smolders, K., and J. Baeyens. "Cleaning of hot calciner exhaust gas by low-density ceramic filters." Powder Technology 111, no. 3 (September 2000): 240–44. http://dx.doi.org/10.1016/s0032-5910(99)00291-0.

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Kanapinov, M. S., G. M. Kashkarov, T. V. Novoselova, A. A. Sitnikov, N. P. Tubalov, and O. V. Yakovleva. "Porous permeable metal-ceramic SHS-materials based on steel alloy and natural mineral ilmenite scale." Perspektivnye Materialy, no. 11 (2020): 38–46. http://dx.doi.org/10.30791/1028-978x-2020-6-38-46.

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The widespread use of road transport dictates the need to create new porous permeable catalytic filter materials with desired properties for cleaning exhaust gases of engines. Recently, composite cermet has taken the lead among catalytic materials for exhaust gas cleaning. When using catalytic materials for cleaning exhaust gases, an unsolved problem now is the problem of substitution in rare-earth metals. In this regard, research aimed at creating new porous permeable catalytic materials with partial or full replacement of materials with rare-earth metals are relevant. Using a method of self-propagating high-temperature synthesis (SHS), a heat-resistant (temperature range 400 – 723 K) porous permeable metal-ceramic material (PPMM) with catalytic properties was obtained. In the basis of the charge, powders of scale of alloyed steel, aluminum, natural mineral ilmenite, as well as oxides of aluminum and chromium are used. The basis of the material is the backbone of cermet, reduced iron, chromium oxides and titanium. The physicomechanical and operational properties of the materials obtained were investigated. Increasing the concentration in the mixture of ilmenite by weight increases the pore diameter, porosity, specific surface area; leads to a reduction in harmful exhaust emissions. Increasing the concentration in the mixture of ilmenite by weight increases the pore diameter, porosity, specific surface area; leads to a reduction in harmful exhaust emissions. It is shown that the material obtained is suitable for the catalytic purification of diesel gases from nitrous oxide, carbon monoxide, hydrocarbons and soot. Neutralizing filters made of materials with additives of the natural mineral ilmenite possess catalytic properties and can be successfully used in cleaning the exhaust gases of internal combustion engines.

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VASINA, M. V., and N. YU CHEREMISINA. "REDUCTION OF EMISSIONS OF POLLUTANTS FROM FLUE GASES OF COMBINED HEAT AND POWER PLANTS." Actual Issues Of Energy 4, no. 1 (2022): 081–88. http://dx.doi.org/10.25206/2686-6935-2022-4-1-81-88.

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This paper considers the characteristics of a thermal power plant as a major source of air pollution in the city of Omsk, considers the sources and composition of exhaust gases, qualitative and quantitative characteristics of pollutant emissions, and presents a technological scheme for the formation of these components. Based on the results of the work, measures were proposed to reduce the negative impact of exhaust gases on atmospheric air, and 2 technological installations for cleaning exhaust gas emissions were considered in comparison, and the environmental and economic effect was calculated.

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Delgado, Nelson Gustavo Díaz, and Francesc Xavier Martínez De Osés. "Open-Loop Exhaust-Gas Cleaning System: Analysis of Effects Produced on Barcelona Port Water pH." Water 14, no. 7 (April 2, 2022): 1146. http://dx.doi.org/10.3390/w14071146.

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The implementation of a 0.5% mass/mass sulphur cap in fuels used by ships has become a reality. Furthermore, regulation 14 of the MARPOL Convention–Annex VI (amended) establishes that the limit on fuel used by ships operating in a Sulphur Emission Control Area (SECA) cannot exceed 0.1% of mass/mass. To deal with these requirements while considering nature of the shipping business, which is the continuous carriage of cargo around the world, shipowners or shipping companies have few options for following this regulation. Apart from the use of a low-sulphur-content fuel is the use of an exhaust-gas cleaning system, also known as “scrubbers”, as an alternative. The use of these systems, specifically the open-loop system, entails the discharge to the sea of residual water used during the cleaning process of exhaust gases from ship engines. The objective of this paper is to study the effect produced by discharging this residual water on the acidity level (pH) of Barcelona port water. This objective was achieved through the periodical sampling and analysis of Barcelona port water in collaboration with the IDAEA (CSIC) laboratory. We analysed the evolution of the pH results obtained so far and obtained an initial picture of the pH Barcelona port water situation in real time regarding the effect of wash-water discharges from open-loop scrubbers. Furthermore, this paper describes the implementation of a system which is going to improve the operation of open-loop exhaust-gas cleaning systems.

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Wu, Yuan, Hui Wang, Zehua Zheng, and Xingzhen Li. "Design of the 3D Printer Nozzle Cleaning System." Journal of Physics: Conference Series 2450, no. 1 (March 1, 2023): 012043. http://dx.doi.org/10.1088/1742-6596/2450/1/012043.

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Abstract Aiming at the problems of low cleaning efficiency, damaged nozzle, and high safety hazard in the traditional cleaning method of the fused deposition modeling (FDM) equipment nozzle, an environmentally friendly nozzle cleaning system was designed by using the chemical solvent and ultrasonic cleaning technology. The modular design of the nozzle clamping module can improve the nozzle loading efficiency and cleaning efficiency. The cleaning liquid circulation device makes the cleaning process automated under the coordination of the control module, which effectively reduces the safety hazards of the cleaning process. A thermal drying device is mainly used to speed up the drying rate of the nozzle. An exhaust gas purification device is used to absorb the volatile chemicals in the cleaning process and reduce pollution in the working environment.

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Yu, Han, and Ang Zhan. "A Review on Self-Cleaning Coatings for Tunnels." Journal of Architectural Research and Development 6, no. 1 (January 12, 2022): 13–19. http://dx.doi.org/10.26689/jard.v6i1.2917.

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Self-cleaning coatings for tunnels can effectively remove dust and stains accumulated over the surface of tunnel linings and their appurtenances due to the closed environment and poor ventilation. This paper systematically introduces the current research status of self-cleaning coatings for tunnels, focusing on the development of super-hydrophobic self-cleaning coatings, superamphiphobic self-cleaning coatings, exhaust gas degradation coatings, fire retardant coatings, and tunnel de-icing coatings. The advantages and disadvantages of the five functional coatings are then briefly described, and the problems of self-cleaning coatings for tunnels at the present stage are pointed out. Finally, the development direction of self-cleaning coatings for tunnels is proposed to provide a reference for the research and application of self-cleaning coatings for tunnels.

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Dorokhov, A. S., А. G. Aksenov, A. V. Sibirev, M. A. Mosyakov, and N. V. Sazonov. "Study of an Exhaust Gas Heat Separation System for the Beet Harvester." Agricultural Machinery and Technologies 16, no. 1 (March 18, 2022): 19–26. http://dx.doi.org/10.22314/2073-7599-2022-16-1-19-26.

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It was noted that increased soil moisture worsens the quality of harvesting root crops due to a decrease in the completeness of separation. To increase the separating capacity of a slotted cleaner for root crops, it was proposed to improve the heating of the separating surface with hot exhaust gas. (Research purpose) To optimize the design and technological parameters of an exhaust gas heat separation system of the sugar beet harvester power plant. (Materials and methods) Federal Scientific Agroengineering Center VIM developed an exhaust gas heat separation system for harvesting root crops and potatoes in high moisture conditions using the heat of the harvester power plant exhaust gases. The cleaning quality of the separating system of a self-propelled sugar beet harvester was determined under the gradual engine load from 0 to 100 percent of the nominal rated power. The temperature of the exhaust gases was measured with the assumption of changes in the engine load and its effective power. (Results and discussion) The experiment revealed an increase in the completeness of the separation of a root crops heap from 96.0 to 98.8 percent at 26-32 percent soil moisture due to the separation system in the form of a cleaning star, which uses the heat of the engine exhaust gases. The established optimal values of the factors under consideration are as follows: the separating star rotation rate is 21.8 revolutions per minute, the distance between the separating star and the deflector is 128.4 millimeters. (Conclusions) It was determined that the high quality of the technological process of root crops harvesting in high soil moisture conditions ensuring a 97-percent separation efficiency is possible if optimize the separating device design and technological parameters and maintain the separating star rotation rate at 20-22 revolutions per minute and the distance between the separating star and the deflector within 120-140 millimeters. The authors noted the prospects of developing this system and the need for theoretical and experimental studies to improve the design and technological process of the harvester separating system.

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Gorlova, Nina N., and Gennady V. Medvedev. "ASSESSMENT OF THE DEPENDENCE OF SHIP POWER PLANTS EXHAUST GASES PURIFICATION DEGREE ON CORROSION RESISTANCE AND THE AMOUNT OF THE CATALYTIC MATERIAL COMPOSITION." Russian Journal of Water Transport, no. 63 (June 1, 2020): 183–92. http://dx.doi.org/10.37890/jwt.vi63.88.

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A significant negative impact on the environmental components (atmosphere and hydrosphere) is provided by water transport as a result of the use of “heavy” fuels and the lack of effective exhaust gas purification systems. One of the technologically and cost-effective is the cleaning of spent marine power plants using catalytic converters. An optimal degree of purification of exhaust gases from sulfur and nitrogen compounds is ensured by using catalytic materials in porous permeable SHS purification systems.

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Druzhinin, K. E., N. V. Vasyunina, N. V. Nemchinova, and T. R. Gilmanshina. "Exhaust Gases Purification of Sintering Furnaces Using Under-Sludge Water as a Gas Cleaning Solution." Ecology and Industry of Russia 24, no. 3 (March 4, 2020): 4–9. http://dx.doi.org/10.18412/1816-0395-2020-3-.

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It is proposed to introduce an additional stage of "wet" cleaning of waste gases of caking at RUSAL Achinsk. For experimental industrial research, the work used a multi-vortex scrubber, in which the gas is cleaned in a dispersed water-air layer, formed by the flow of gases from the bottom up through the dispersing lattice. As an absorbent irrigation solution, it is proposed to use pre-heated up to 50 degrees Celsius water (PSH), containing an average of 8.98 g/dm3 and 16.74 g/dm3 of caustic and total alkaline, respectively. The efficiency of gas dust-cleaning was assessed depending on the consumption of PSH (0.2–1.2 l/m3 of gas at feed speeds of 0.2 hp and 0.4 hp), as well as the use of two schemes of its supply (flow and recycling).

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Druzhinin, K. E., N. V. Vasyunina, N. V. Nemchinova, and T. R. Gilmanshina. "Exhaust Gases Purification of Sintering Furnaces Using Under-Sludge Water as a Gas Cleaning Solution." Ecology and Industry of Russia 24, no. 3 (March 4, 2020): 4–9. http://dx.doi.org/10.18412/1816-0395-2020-3-4-9.

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It is proposed to introduce an additional stage of "wet" cleaning of waste gases of caking at RUSAL Achinsk. For experimental industrial research, the work used a multi-vortex scrubber, in which the gas is cleaned in a dispersed water-air layer, formed by the flow of gases from the bottom up through the dispersing lattice. As an absorbent irrigation solution, it is proposed to use pre-heated up to 50 degrees Celsius water (PSH), containing an average of 8.98 g/dm3 and 16.74 g/dm3 of caustic and total alkaline, respectively. The efficiency of gas dust-cleaning was assessed depending on the consumption of PSH (0.2–1.2 l/m3 of gas at feed speeds of 0.2 hp and 0.4 hp), as well as the use of two schemes of its supply (flow and recycling).

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JAWORSKI, Artur, Kazimierz LEJDA, Janusz LUBAS, and Maksymilian MĄDZIEL. "Comparison of exhaust emission from Euro 3 and Euro 6 motor vehicles fueled with petrol and LPG based on real driving conditions." Combustion Engines 178, no. 3 (July 1, 2019): 106–11. http://dx.doi.org/10.19206/ce-2019-318.

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Constantly increasing requirements regarding emission limits for harmful exhaust components force vehicle manufacturers to im-prove the construction of vehicle engines as well as exhaust gas cleaning systems. In addition to modifications in the field of technology of motor vehicles themselves, it is also important to study the impact of alternatives to petrol or diesel fuels. One of the most popular fossil fuel is liquid petroleum gas. In the paper, the results of comparative studies on the emission of harmful exhaust components of vehicles meeting the Euro 3 and Euro 6 standards in the field of petrol and LPG fuel use are presented. Emission measurement was performed using a portable emission measurement system from Horiba OBS-2200 under real traffic conditions. The presented results show the differences between the tested vehicles and the fuels used.

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Higo, Takuma, Kohei Ueno, Yuki Omori, Hiroto Tsuchiya, Shuhei Ogo, Satoshi Hirose, Hitoshi Mikami, and Yasushi Sekine. "Perovskite lattice oxygen contributes to low-temperature catalysis for exhaust gas cleaning." RSC Advances 9, no. 39 (2019): 22721–28. http://dx.doi.org/10.1039/c9ra03050f.

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A Pd catalyst supported on Ba-substituted LaAlO₃ perovskite (Pd/La_0.9Ba_0.1AlO_3−δ) has remarkably higher activity than other Pd catalysts at low temperatures (≤573 K) for NO reduction by propylene.

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Jaworek, Anatol, Andrzej Krupa, and Tadeusz Czech. "Modern electrostatic devices and methods for exhaust gas cleaning: A brief review." Journal of Electrostatics 65, no. 3 (March 2007): 133–55. http://dx.doi.org/10.1016/j.elstat.2006.07.012.

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Turkin, Aleksandr V. "RESEARCH OF OXYGEN GENERATION OF OZONE FOR MARINE ENGINES EXHAUST GAS CLEANING." Vestnik Gosudarstvennogo universiteta morskogo i rechnogo flota imeni admirala S. O. Makarova 9, no. 1 (February 28, 2017): 193–200. http://dx.doi.org/10.21821/2309-5180-2017-9-1-193-200.

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Olenius, Tinja, Arto Heitto, Pontus Roldin, Taina Yli-Juuti, and Christophe Duwig. "Modeling of exhaust gas cleaning by acid pollutant conversion to aerosol particles." Fuel 290 (April 2021): 120044. http://dx.doi.org/10.1016/j.fuel.2020.120044.

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Peng, Chen. "Design and Analysis of Ship Exhaust Boiler Flue Cleaning System Based on Computer." Journal of Physics: Conference Series 2074, no. 1 (November 1, 2021): 012032. http://dx.doi.org/10.1088/1742-6596/2074/1/012032.

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Abstract In recent years, the country for ship emissions of exhaust gas control is relatively loose, but also relatively lack of specific and effective supervision and scientific exhaust emissions and treatment technology, so China’s air pollution is increasingly serious. With the implementation of regulations on the emission of air pollutants from land-based sources such as motor vehicles and power stations, researchers have found that exhaust pollution from ships accounts for an increasing proportion of the overall air pollution, especially in port cities and coastal areas, causing great damage. In order to effectively reduce ship exhaust pollution in China, the Ministry of Transport through the establishment of ship emission control area program, stage by stage and regional limits on the sulfur content of fuel used by ships sailing in China’s ports and coastal inland river waters. Through the implementation of the regulations of the ship discharge control area, all kinds of pollutants discharged by ships have been significantly reduced, and the environment of the port area has been improved to a certain extent. At the same time, it is also necessary to use the computer and other high-tech constantly develop new ship exhaust cleaning mode to deal with the increasingly serious environmental pollution problem.

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Jakobsen, Jensen, Bitarafan, and Andreasen. "Killing Weed Seeds with Exhaust Gas from a Combine Harvester." Agronomy 9, no. 9 (September 12, 2019): 544. http://dx.doi.org/10.3390/agronomy9090544.

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We investigated if hot exhaust gas from a combine harvester could be used to reduce germination or kill weed seeds during the harvesting process. During the threshing and cleaning process in the combine, weed seeds and chaff are separated from the crop grains. After this separation, weed and crop seeds not collected can be exposed to exhaust gas before seeds are returned to the field. Seeds of some common weed species (Alopecurus myosuroides, Centaurea cyanus, Geranium pusillum, Lapsana communis, Lolium perenne, Rumex crispus, Spergula arvensis, and Tripleurospermum inodorum) were treated with exhaust gas at temperatures of 75 °C or 85 °C, 110 °C, and 140 °C for 2, 4, and 6 s, respectively. Afterwards, the seeds were germinated for 16 days. We found that 75 °C and 85 °C were insufficient to significantly reduce germination of the seeds after three durations. Some seeds were still able to germinate after 4 s exposure of 110 °C. An exposure of 140 °C for 4 and 6 s repressed germination of all species. We conclude that there is potential to develop combine harvesters that exploit the exhaust gas to either kill or reduce the ability of weed seeds to germinate before seeds are returned to the field.

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Wang, Yu Zhao, Xue Min Liu, Ai Cheng Liu, Qing Liu, Jian Chun Zhang, and Wen Bin Jiang. "Study on the Contamination Coefficient of Convective Heating Surface in a Circulating Fluidized Bed Boiler." Advanced Materials Research 732-733 (August 2013): 286–90. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.286.

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The ash deposition and the gas velocity affect the exhaust gas temperature of a CFB boiler. The surface contamination in a CFB boiler is quite different from that one in the pulverized coal boiler. It is suggested that the surface contamination in a CFB boiler should be determined according to the ash content in the fuel as well as the cyclone collection efficiency. The effect of the gas velocity on the surface contamination is very important. The lower gas velocity causes more serious contamination, leading to the higher exhaust gas temperature. The staged tube arrangement should be employed. And the gas velocity should be designed higher to enhance the self-cleaning ability. Anyway, the soot blower should be designed in the CFB boiler convective heating surface. The ratio of the practical contamination coefficient to the design one, k,is the strong function of gas velocity, wy, which was expressed as: k=1+exp(6.8-wy)

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Bakyt, Gabit, Yerkin Jailaubekov, Seidulla Abdullayev, Galymzhan Ashirbayev, and Irina Ashirbayeva. "Assessment of carbon dioxide emissions in road transport, using exhaust gas cleaning technology, in the Republic of Kazakhstan." Vibroengineering PROCEDIA 48 (February 11, 2023): 87–92. http://dx.doi.org/10.21595/vp.2023.23163.

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Approaches are presented for calculating carbon dioxide (CO2) emissions generated by the use of exhaust gas purification technology based on urea catalysts. To reduce harmful substances in the exhaust gases for diesel-fueled automobile engines, the need for SCR technology is justified. It is shown that the main source of emissions is diesel freight transport, while it is advisable to carry out calculations from 2010, and not from 2005, as a number of foreign experts insist. The working scheme of the integrated cleaning system of diesel engines of passenger cars has been developed. An integrated cleaning system for automotive engines has been developed. Additional emissions are very small and account for less than one percent of the CO2 emissions generated from the operation of all road transport. According to the results of the calculations, it was obtained that the share of emissions from the use of urea additives is very small to the emissions of СО2 formed during direct combustion of fuel.

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Zhao, Zhongyang, Yongxin Zhang, Yuhao Shao, Chang Liu, Wenjun Li, Haidong Fan, Haobo Dai, Yang Yang, Chenghang Zheng, and Xiang Gao. "Simulation of SO2 removal process from marine exhaust gas by hybrid exhaust gas cleaning systems (EGCS) using seawater and magnesium-based absorbent." Separation and Purification Technology 287 (April 2022): 120557. http://dx.doi.org/10.1016/j.seppur.2022.120557.

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Ignatenko, G., Vladimir Antonovich Turkin, V. Belyaev, O. Sviderskaya, and S. Zubko. "SHIP SYSTEM FOR CLEANING ENGINE EXHAUST GASES FROM CARBON, SULFUR AND NITROGEN OXIDES." Operation of Maritime Transport, no. 4 (March 9, 2023): 141–48. http://dx.doi.org/10.34046/aumsuomt105/28.

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To clean the exhaust gases of engines from carbon, nitrogen and sulfur oxides, a method and device are proposed, the principle of which is based on the fact that the exhaust gases pass through an absorber, where they are cleaned of nitrogen and sulfur oxides, and then through adsorption sections filled with granules of slag pumice and are purified from carbon oxides as a result of their adsorption. Carbon dioxide, interacting with water particles in the pores of the granules, forms carbonic acid. Then the diluted carbonic acid condensate after cleaning in the separator from solid impurities is discharged overboard. The composition of a shipboard system for continuous laser monitoring and control of emissions of carbon, nitrogen and sulfur oxides contained in the exhaust gases of engines by adjusting their adjustment parameters, as well as using a device for complex exhaust gas purification, is proposed. An algorithm for solving the problem of fulfilling the requirements of regulation 20 "Achievable EEDI" of Appendix VI of the MARPOL 73/78 Convention on carbon oxide emissions has been developed. The implementation of the proposed algorithm is possible using a system for cleaning combustion products from harmful oxides

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Kornienko, V. S. "System for complex exhaust gas cleaning of internal combustion engine with water-fuel emulsion burning." Refrigeration Engineering and Technology 55, no. 1 (February 10, 2019): 28–33. http://dx.doi.org/10.15673/ret.v55i1.1350.

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The necessity to fulfill all requirements of international organizations in the field of environmental protection, need to reduce heat loss in combustion of organic fuels, increasing economy and reliability of all elements of ship's power plant make it necessary to develop complex technology. The aim of study is to develop system for complex exhaust gas cleaning of internal combustion engine (ICE). For performing tasks in technology of proposed method, providing solutions to problems of improving economic efficiency, improvement of environmental indicators and reliability, it is envisaged 5 stages of technological process. At all stages conditions for appropriate running of physico-chemical processes in the next stage are created. Possibility of solving complex problems in proposed technology is ensured by combustion of water-fuel emulsion (WFE) with specifically recommended value of water content W r = 30%. When WFE is burnt with a water content of 30%, the low-temperature corrosion intensity decreases, which allows to install a condensing heating surfaces in exhaust gas boilers. At these conditions an equimolar ratio of nitrogen oxides NO2:NO in gases is required, which is necessary to activate their absorption properties. When WFE is burnt with water content W r = 30% the metal surface with a temperature below of dew point H2SO4 passivates. Experimental studies performed show that: 1 m2 of condensing surface absorbs 3.4 mg/m3 of NOx and 0.89 mg/m3 of SO2, which makes it possible to decrease the NOx concentration by 1.55 times and SO2 - in 1.5 times. There is a process of precipitation of toxic solid ash and soot particles: from 150...170 mg/m3 (at outlet of ICE when WFE is burnt with W r = 30%) to 70...90 mg/m3 after the condensing surface. Consumption of water with alkaline properties decreases when NOx, SO2, CO2 concentration is reduced in front of scrubbers. Reducing pollution of heating surfaces increases the cleaning period of EGB in 2.5 times. The using of complex system provides efficient exhaust gas cleaning at the level recommended by IMO.

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Fukaya, Ichiro. "MITSUBISHI Hybrid SOx Scrubber - Exhaust Gas Cleaning System for MARPOL AnnexVI SOx Regulation." Journal of The Japan Institute of Marine Engineering 50, no. 3 (2015): 332–35. http://dx.doi.org/10.5988/jime.50.332.

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Kassymbekov, Zhuzbay Kozhabaevich. "VACUUM CLEANING OF SEWERAGE WELLS USING THE EXHAUST GAS ENERGY OF THE TRACTOR." Water and Ecology 23, no. 2 (2018): 25–31. http://dx.doi.org/10.23968/2305-3488.2018.20.2.25-31.

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Journal articles on the topic 'Exhaust gas cleaning'

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