Relevant bibliographies by topics / Exhaust gas cleaning

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Exhaust gas cleaning'

Author: Grafiati
Published: 28 June 2021
Last updated: 1 April 2023

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Journal articles on the topic "Exhaust gas cleaning"

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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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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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Dissertations / Theses on the topic "Exhaust gas cleaning"

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Selås, Magnus. "Exhaust Gas Cleaning with Selective Catalytic Reduction (SCR)." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11615.

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This thesis presents the work around three laboratory experiments conducted in the machinery laboratory at MARINTEK with focus on performance and degrading mechanisms of a Selective Catalytic Reduction system. Höegh LNG has contributed to the thesis from an industrial perspective together with various Norwegian shipping companies. An introduction to emissions from combustion engines is given, with focus of the real pollutants as NOx, SOx, CO, HC and PM. CO2 has not been defined as a real pollutant as it’s  not itself toxic, but still is a major concern due to it’s contribution to the greenhouse effect. The real pollutants only represents about 0,6% of the total emissions from a combustion engine. An introduction to today’s and future emission limits has been presented. The system consists of a catalyst that contains ceramic stones with a honeycomb shape. The honeycombs contain the active material that reacts with the NH3 introduced in the exhaust gas and reduce the NOx to N2 and H2O. The honeycombs may be coated with the active material or homogeneously extruded. The control unit controls the urea feed rate, and the urea react with water and together with the exhaust heat becomes NH3. The system efficiency is dependent on the ammonia feed rate and a 90 to 95% reduction of NOx is possible. Higher efficiency is possible, however with increased risk of NH3 slip. Degrading mechanisms have been investigated with respect to fatigue and deposits. The SO2 to SO3 conversion rate sets the basis for formation of deposits, and hence should be reduced as much as possible. With respect to fatigue, we investigated with a laboratory experiment whether the temperature variations were sufficient to cause any thermal strain on the honeycombs. This hypothesis was undermined as the temperature variations logged were in the lower edge of 10oC. Whether logging of temperatures can function as indicators of degrading of the catalyst were investigated in a second experiment. The approach was to search for a correlation between the temperature in the catalyst material (TCenter) and the catalyst activity as degrading of the lab catalyst require many hours of operation. We did not find a clear connection between the two, however a connection between the activity and temperature difference ΔT = T2 − T1 was discovered. This will be a topic for further investigation by MARINTEK. The performance of the SCR in the machinery lab has been documented, with a reduction efficiency of 95% in compliance with international ammonia slip level requirement. A bleed of the turbocharger compressor was performed in order see if increased the exhaust gas temperature would increase the reduction efficiency. This was not the case as we achieved same reduction efficiency with somewhat higher slip. The increased NOx emission level  has been corrected for. A FTIR gas analyzer was rented by MARINTEK in order to verify the accuracy of their Horiba PG-250. When comparing the two instruments, deviations were neglectable. The number one challenge for SCR according to shipping companies is to ensure satisfying reduction efficiency when the engine is experiencing frequent load changes. Together with this the challenge is to get SCR working properly with low speed two stroke engines operating on HFO.
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Moles, Nathaniel. "Investigation of techniques and effects of diesel particulate filter cleaning." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4709.

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Thesis (M.S.)--West Virginia University, 2006.
Title from document title page. Document formatted into pages; contains xi, 110 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 87-92).
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Kozii, Ivan, and Іван Козій. "Using a highly efficient gas cleaning equipment for reduction technogenic impact on the environment." Thesis, National Aviation University, 2021. https://er.nau.edu.ua/handle/NAU/50966.

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1. Matus K.J., Nam K.-M., Selin N.E., Lamsal L.N., Reilly J.M. Health Damages from Air Pollution in China. Global Environmental Chang, 2012, vol. 22, no. 2, pp. 55-66. 2. Tronvil P. Developing standards: Global standards for air cleaning equipment. Filtration & Separation, 2008, vol. 45, no. 9, pp. 28-31. 3. Hession M. Incinerator and gas cleaning equipment overview. Health Estate J., 1997, vol.51, no. 8, pp. 6-7.
Growth in the scale of economic activity leads to increased human impacts and disturbance of equilibrium in the environment. Along with the depletion of natural resources increases environmental pollution, in particular water and air. This significantly undermines the natural resource potential of the state’s development, negatively affects the welfare and health of the population, and poses a threat to environmental safety. Consuming natural resources, industrial enterprises are sources of complex environmental contamination. Activities of industrial enterprises has a negative impact on the state of ecosystems surrounding areas. Deposition of contaminants from the waste gases results in contamination of the soil and migration of heavy metals in the groundwater and surface water. The problem is compounded by the fact that the exhaust gases contain different by dispersion of the solid particles. This poses the problem of the development of environmental protection measures for air protection from emissions of industrial enterprises. One way to reduce the amount of pollutants released into the air with the flue gases is the selection of highly efficient gas-cleaning equipment, which must take into account several factors: physical and chemical characteristics of the carrier gas, the characteristics of chemical and particulate contaminants.
Зростання масштабів економічної діяльності призводить до посилення людського впливу та порушення рівноваги в навколишньому середовищі. Разом з виснаженням природних ресурсів збільшується забруднення навколишнього середовища, зокрема води та повітря. Це суттєво підриває природно-ресурсний потенціал розвитку держави, негативно впливає на добробут та здоров’я населення та створює загрозу екологічній безпеці. Споживаючи природні ресурси, промислові підприємства є джерелами складного забруднення навколишнього середовища. Діяльність промислових підприємств негативно впливає на стан екосистем навколишніх територій. Відкладення забруднень із відпрацьованих газів призводить до забруднення ґрунту та міграції важких металів у підземні та поверхневі води. Проблема ускладнюється тим, що вихлопні гази містять різні за рахунок дисперсії твердих частинок. Це ставить проблему розробки природоохоронних заходів щодо захисту повітря від викидів промислових підприємств. Одним із способів зменшити кількість забруднюючих речовин, що викидаються в повітря з димовими газами, є підбір високоефективного газоочисного обладнання, яке повинно враховувати декілька факторів: фізичні та хімічні характеристики газу-носія, характеристики хімічних та твердих частинок забруднювачі.
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Brázda, Kryštof. "Konstrukční návrh elektrostatického odlučovače pro domovní kotel spalující dřevní paliva." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443220.

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The presented diploma thesis deals with the design of an electrostatic precipitator for a domestic automatic wood fuel boiler. The individual chapters describe the products of the combustion process, the principles of charging dust particles, describe existing patents related to electrostatic precipitators, commercial electrostatic precipitators and the last part of the work calculates a mathematical model, according to which previously designed and evaluated separator variants were designed and evaluated. Based on the results, the optimal variant of the electrostatic precipitator designed for a domestic boiler is then selected.
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Liu, Hung-Hsuan, and 劉宏軒. "Numerical Simulation of Flow in the Diesel Engine Exhaust Gas Cleaning System (EGCS) for Desulfurization." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/2ujyf5.

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碩士
國立臺灣海洋大學
輪機工程學系
108
The venting of vessel during the combustion of diesel engines and boilers is one of the sources of atmospheric pollution. According to the IMO regulations on reducing the emission of sulfur oxides from vessel in 2005, under the International Convention for the Prevention of Pollution from Vessel (known as the MARPOL Convention) The Annex VI is in force and the restrictions on sulfur oxides are becoming stricter. According to IMO's MECC.259 (68) resolution on the regulation of sulfur in global seas, from January 1, 2020, the sulfur content of fuel used on ships sailing outside the designated emission control area will be reduced to less than 0.5% m/m. . In order to reduce the sulfur content in the exhaust gas, in addition to the use of low-sulfur fuels that meet the standards, another solution is to install an exhaust gas cleaning system (EGCS). The sulfur content of diesel engine and boiler combustion exhaust gas and the use of desulfurization technology in onshore power plants are mature, and the world ship owners have begun to install and use it extensively. Therefore, this paper uses the Fluent® numerical calculation software to simulate the flue gas cleaning system (EGCS) process of the combustion equipment. The desulfurization towers designed for different internal flue structures are analyzed by the flue gas cleaning system (EGCS) flue gas and the flue gas flow in the reactor, and the process of removing sulfur oxides. The results show that the flue gas of the draft tube is relatively uniform, and the sulfur removal effect is increased. Key words: Flue Gas Cleaning System, Flue Gas Desulfurization, Sulfur Oxide, Numerical Simulation
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Books on the topic "Exhaust gas cleaning"

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Monahan, Patricia. Cleaning up diesel pollution: Emissions from off-highway engines by state. Cambridge, MA: Union of Concerned Scientists, 2003.

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Cragg, Chris. Cleaning up motor car pollution: New fuels and technology. London: Financial Times Business Information, 1992.

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Lukanin, Aleksandr. Environmental Engineering: Processes and gas emissions purification devices. ru: INFRA-M Academic Publishing LLC., 2017. http://dx.doi.org/10.12737/24376.

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The tutorial adequately considered the currently existing methods of protection of the air basin from industrial waste gases of chemical, petrochemical, microbiological, pharmaceutical and related industries. The material is based on a thorough analysis of the treatment methods commonly used, the most dangerous substances that enter the Earth´s atmosphere with the exhaust gases of large enterprises, also provides guidance on the use of gas-cleaning equipment emissions in the industry. Compliant with the Federal state educational standard of the latest generation of higher education. The book is intended for students of technical colleges enrolled in areas of training "Technosphere Safety" and "Environmental Engineering" (training profiles: "Environmental Engineering localities", "Engineering protection of the environment of industrial enterprises" and "Protection of the environment and resources"), as well as for engineering technical staff, graduate students and professors.
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Book chapters on the topic "Exhaust gas cleaning"

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Kamil, Md Salim, Muhammad Adli Mustapa, Nik Azri Bin Anuar, and Muhammad Nashrulrizal Ahmad Khairi. "Viability of a Multi-stage Exhaust Gas Cleansing Module for Ship Installation." In Advanced Maritime Technologies and Applications, 377–88. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-89992-9_33.

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Sawada, Jun, Yoshihiko Matsui, Karol Hensel, Ippei Koyamoto, Kazunori Takashima, Shinji Katsura, and Akira Mizuno. "Micro-discharge in porous ceramics for exhaust gas cleaning." In Recent Developments in Applied Electrostatics, 128–31. Elsevier, 2004. http://dx.doi.org/10.1016/b978-008044584-7.50032-3.

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Ghasemzadeh, Kamran, S. M. Sadati Tilebon, and Angelo Basile. "Conventional systems for exhaust gas cleaning and carbon capture and sequestration." In Current Trends and Future Developments on (Bio-) Membranes, 65–96. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-817807-2.00004-6.

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Ghasemzadeh, Kamran, S. M. Sadati Tilebon, and Angelo Basile. "Membrane technologies for exhaust gas cleaning and carbon capture and sequestration." In Current Trends and Future Developments on (Bio-) Membranes, 97–123. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-817807-2.00005-8.

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Åberg, Andreas, Thomas K. Hansen, Kasper Linde, Anders K. Nielsen, Rune Damborg, Anders Widd, Jens Abildskov, Anker D. Jensen, and Jakob K. Huusom. "A Framework for Modular Modeling of the Diesel Engine Exhaust Gas Cleaning System." In 12th International Symposium on Process Systems Engineering and 25th European Symposium on Computer Aided Process Engineering, 455–60. Elsevier, 2015. http://dx.doi.org/10.1016/b978-0-444-63578-5.50071-2.

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"DUST IN LIVESTOCK BUILDINGS AS A CARRIER OF ODOURS J. HARTUNG Institute for Animal Hygiene of the Hannover School of Veterinary Medicine, Blinteweg 17p, 3000 Hannover 71, FRG Summary The dust of animal houses originates mainly from the feed (80-90%), the bedding material, the manure (2-8%),and the animals (2-12%) themselves. It consists substanticaily of organic matter. The factors determining the amount of dust in confinements include animal activity, temperature,rel-ative humidity, ventilation rate, stocking density and volumetric air-space per animal, feeding method, and na­ ture of the feed. This dust originating from various sources can carry gases, vapours and odours. The analysis of dust-borne trace gases is usually done by solvent ex­ traction followed by gas chromatography. At least 60 com­ pounds belonging to different chemical groupings were i-dentified in the dust from animal houses. Volatile fatty acids and phenolic/indolic compounds were found to con­ tribute mostly to the strong, typical odour of animal houses. Main components in these groups are acetic acid and p-cresol, respectively. In the dust from pig houses qualitatively and quantitatively nearly the same volatile fatty acids and phenols are found than in the air or in the slurry. One m3 of the exhaust air from a 500 head pig fattening unit can contain dust-borne 6.27 pg volatile fatty acids and 2.76 yg phenolic/indolic compounds. The concentration of odours on the dust particles seems to be much greater than in an equal volume of air. Filtering the dust from the exhaust air can reduce the odour emission from animal houses up to 65%. Another way to reduce the dust-borne odour emission is to avoid the release of dust in the animal house by wet feeding, vacuum cleaning or showeri ng. 1. INTRODUCTION Dust in animal houses is an atmospheric contaminant of the environment of the animals (1). It is an important carrier of microorganisms (2), (3), (4), and can influence the perform­ ance and health of animal (5), (6), (7), and man (8),(9),(10). In addition the dust of animal houses was supposed to play an essential role in the transport of trace gas and odour inside and in spreading of odorous gases outside of the animal house (11), (12), (13), (14). This paper reports on the aspects of dust formation in livestock buildings, the material composition of the dust, the." In Odour Prevention and Control of Organic Sludge and Livestock Farming, 335. CRC Press, 1986. http://dx.doi.org/10.1201/9781482286311-129.

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Conference papers on the topic "Exhaust gas cleaning"

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Guber, Andreas E., and Uwe Koehler. "On-line exhaust gas analytics during plasma cleaning of PECVD facilities." In Microelectronic Manufacturing '95, edited by Anant G. Sabnis and Ivo J. Raaijmakers. SPIE, 1995. http://dx.doi.org/10.1117/12.221310.

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Ghaderi, Amir, Luke M. Middelburg, David Bilby, Jaco H. Visser, Per Lundgren, Peter Enoksson, and Reinoud F. Wolffenbuttel. "Self-Cleaning Micro-Windows for In-Tailpipe Optical Exhaust Gas Measurements." In 2020 IEEE 29th International Symposium on Industrial Electronics (ISIE). IEEE, 2020. http://dx.doi.org/10.1109/isie45063.2020.9152437.

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Giroth, Ezra Johan, and Edward B. Ang. "The Design and Evaluation of Exhaust Gas Cleaning System Equipped with SOx Scrubber." In 2022 IEEE 13th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT). IEEE, 2022. http://dx.doi.org/10.1109/icmimt55556.2022.9845278.

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Díaz Delgado, Nelson, and Francesc Xavier Martínez de Osés. "Open loop exhaust gas cleaning system and its effect over the Barcelona port water PH." In Maritime Transport Conference. Universitat Politècnica de Catalunya. Iniciativa Digital Politècnica, 2022. http://dx.doi.org/10.5821/mt.11497.

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Nowadays the air pollution prevention has become a priority objective in our society, but it is being expressly noteworthy into the maritime industry and shipping business. The last is because there is a strong regulatory framework which establishes requirements fuel oils used on board the ships must meet. Among these requirements we should note those regarding to the fuel oils with a sulphur content not exceeding that specified in regulation 14 of Annex VI Marpol Convention [1]. To deal with these requirements, some shipowners have chosen to use open-loop exhaust gas cleaning systems on board their ships. Main feature of these systems is regarding to the continuous discharges of wash water to the sea. One of the properties of this wash water is its low pH level, notably acid This paper is talking about the Barcelona port water pH evolution, specifically from the South Basin port water, after receiving weekly 2-3 ships which are using the open-loop exhaust gas cleaning system and discharging residual wash water from the exhaust gas cleaning process on the port water. The pH values of samples analyzed in the laboratory of the Institute of Environmental Assessment and Water Research (IDAEA-CSIC) are presented in this paper. We will check the evolution of Barcelona South Basin port water pH level, the trend of pH port water and finally we are going to value the observed impact that has the use of open-loop exhaust gas cleaning systems on this port water. Finally, we will analyse current situation and talk about the studies or research on this topic and the real need for improving the operation of open-loop exhaust gas cleaning systems, avoiding their contribution to the port water acidification.
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Cao, Yunpeng, Lie Chen, Jianwei Du, Fang Yu, Qingcai Yang, and Minghao Wu. "The Degradation Simulation of Compressor Salt Fog Fouling for Marine Gas Turbine." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64464.

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When a gas turbine operates in a marine environment, gradual performance degradation occurs due to salt fog in the compressor and turbine. Regular water washing of a gas turbine can effectively restore the performance loss caused by compressor salt fog fouling on the flow passage. However, inappropriate washing will increase maintenance costs, cause unnecessary down time and premature erosion of leaf surfaces. In this paper, a coefficient matching method for a three shaft marine gas turbine salt fog fouling degradation factor model is proposed, which can establish a model of salt fog fouling degradation factor according to a change in operating time and exhaust temperature in the washing cycle. The influences of load, environment temperature, inlet pressure loss and salt fog fouling rate on the performance degradation of the gas turbine are simulated and analyzed; then, the degradation regularity of the performance parameters of the gas turbine under different operating conditions and fouling degrees is obtained. Finally, a method of operating cost estimation for marine gas turbines is proposed that can estimate the cost of transient change and cumulative change in the cleaning cycle caused by the salt fog fouling, which can help the operator to determine the cleaning strategy and reduce the operation cost of the gas turbine.
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6

Al-Hajeri, M., A. Aroussi, and S. J. Pickering. "Study of the Filtration Process Through a Ceramic Candle Filter." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-229.

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Abstract:
Ceramic candle filters have been developed for cleaning high-temperature high-pressure (HTHP) gas streams. They meet environmental and economical considerations in Combined cycle power plant, where gas turbine blades can be protected from the erosion that occurs due to using HTHP exhaust from the fluidized bed. Ceramic candle filters are the most promising hot gas filtration technology, which has demonstrated high collection efficiencies at high-temperature high-pressure conditions. This paper reports a computational fluid dynamics (CFD) investigation of a candle filter. Constant filtration velocity boundary models have been used to investigate the filter in cross flow conditions using the CFD code FLUENT. Different approach (inlet) velocity to filter face velocity ratios and different face velocities (ranging from 2 to 5 cm/s) are used in the CFD calculation. Particles in the diameter range 1 to 100 microns are tracked through the domain. The radius of convergence (or the critical trajectory) is compared and plotted as a function of many parameters. The deposition process and the factors that affect the build up of the filter cake have also been studied.
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7

Al-Hajeri, M., A. Aroussi, and S. J. Pickering. "Study of the Filtration Process Through a Ceramic Candle Filter." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-354.

Full text
Abstract:
Ceramic candle filters have been developed for cleaning high-temperature high-pressure (HTHP) gas streams. They meet environmental and economical considerations in Combined cycle power plant, where gas turbine blades can be protected from the erosion that occurs due to using HTHP exhaust from the fluidized bed. Ceramic candle filters are the most promising hot gas filtration technology, which has demonstrated high collection efficiencies at high-temperature high-pressure conditions. This paper reports a computational fluid dynamics (CFD) investigation of a candle filter. Constant filtration velocity boundary models have been used to investigate the filter in cross flow conditions using the CFD code FLUENT. Different approach (inlet) velocity to filter face velocity ratios and different face velocities (ranging from 2 to 5 cm/s) are used in the CFD calculation. Particles in the diameter range 1 to 100 microns are tracked through the domain. The radius of convergence (or the critical trajectory) is compared and plotted as a function of many parameters. The deposition process and the factors that affect the build up of the filter cake have also been studied.
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8

Zakkay, V., E. A. M. Gbordzoe, K. M. Sellakumar, and C. Q. Lu. "Performance of Hot Gas Clean-Up Devices Tested at the NYU DOE-PFBC Facility." In 1989 Joint Power Generation Conference: GT Papers. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-jpgc/gt-8.

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Abstract:
Three hot gas clean up units namely, the Screenless Granular Bed Filter (GBF), Ceramic Cross-flow Filter (CXF) and High Temperature, High Pressure Electrostatic Precipitator (ESP) designed for PFBC combined cycle power applications were tested at the New York University (NYU) DOE-PFBC facility located at Westbury, New York using a 780 mm ID pressurized fluidized bed combustor. The combustor was operated up to 10 atma and 870 °C. With the exception of the ESP whose performance was hampered by persistent electrode bushing failure, the particulate capturing efficiencies of the GBF and the CXF were predominantly in the upper 90 % range. The dust loading leaving the filters was consistently lower than the NSPS particulate emission limit. The results also indicate that the filter exit gas stream may meet the gas turbine particulate tolerance limit. None of the three high temperature, high pressure (HTHP) gas clean up units tested emerges as a favorite for use in cleaning PFBC exhaust stream because, each has mechanical design as well as operational flaws which could be corrected. The Cross-flow filter suffered from filter element cracking or delamination or gasket failure during its short test program. The backpulse cleaning system also needs to be optimized. The GBF is susceptible to media bubbling and granule flow problems through its lower seal leg. The Electrostatic Precipitator tested at NYU failed because its electrode bushings cracked due to overheating and could not hold their designed voltage. Further HTHP filter testing at the sub-pilot plant scale is necessary to optimize filter design and develop effective operational procedures for the hot gas clean up systems that will make them viable for commercial PFBC application.
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9

Lorra, Michael A., Carol A. Schnepper, and Stephen Somers. "Investigation of a Duct Burner Design Using CFD in Comparison With Full-Scale Experiments." In International Joint Power Generation Conference collocated with TurboExpo 2003. ASMEDC, 2003. http://dx.doi.org/10.1115/ijpgc2003-40080.

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Most new duct burners are supplied to heat recovery steam generator (HRSG) manufacturers for use in cogeneration systems. Key components of a simple cycle cogeneration plant include a turbine, generator, turbine exhaust gas duct, duct burner (optional), HRSG and downstream flue gas cleaning equipment. New developments in gas turbine technology are changing the boundary conditions for supplemental firing. In response, John Zink has an ongoing research project for the development of new duct burners achieving ultra low NOx emissions maintaining a good flame quality. The scope of this research work includes computational fluid dynamic modeling (CFD) and experimental testing of current design duct burner to obtain baseline data comparable with CFD results, and various experimental configurations through a full range of expected operating conditions. Experimental testing is performed in a test furnace at John Zink Company, Tulsa. Turbine exhaust gas (TEG) is simulated using John Zink Duct burners, which are supplied with air from a combustion air fan. Different O2 levels can be achieved by a combined water/steam injection. The temperature level of the TEG to the test burner can be adjusted with an air-cooled heat exchanger. Temperature and concentration measurements can be made at the test burner location and in the stack. Flame length, as well as NOx and CO emissions were measured for each data point. CFD modeling focused on the performance effects of turbine exhaust gas flow mal-distribution and the investigation on how reliable CFD models are, regarding flame stability calculations and NOx production. The results of this comprehensive testing and results from the CFD calculations will be compared and presented.
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10

Yan, Jinyue, Lars Eidensten, and Gunnar Svedberg. "An Investigation of the Heat Recovery System in Externally Fired Evaporative Gas Turbines." In ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/95-gt-072.

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Abstract:
Externally fired gas turbines have the features of using solid fuel and requiring no particulate cleaning up to protect the gas turbine path. The solid fuel can be, for example, coal or biomass. Evaporative gas turbines (e.g., HAT cycle) have the potential to enhance the power output and increase the efficiency without including a bottoming steam turbine. The integration of the two systems, so called externally fired evaporative gas turbine, can offer the features from both of the systems. In the present paper, the modified externally fired evaporative cycle with intercooling and recuperation is proposed and analyzed. The externally fired gas turbine system is divided into three main subsystems: gas turbine subsystem, solid fuel combustion subsystem and heat recovery subsystem. This paper presents an in-depth investigation of the heat recovery subsystem and its impacts on the total system. The effects of intercooler and aftercooler on the whole system have been addressed and discussed. The optimization strategies for multiple interaction variables, such as air temperature after the recuperation, water-to-air ratio and combustion air temperature for the externally fired combustor, have been provided. The optimization results show that the behavior of the heat recovery subsystem greatly affects the cycle efficiency and power output. Using exhaust heat to heat humid air in a recuperator and to preheat combustion air to the biomass combustor are important for improving the externally fired evaporative gas turbine system. With the electrical efficiency as the objective function of the optimization, there exists an optimum water-to-air ratio located at 0.17 to 0.20 for the system studied in this paper.
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