Готові списки джерел за темами / Coal gasification China

Добірка наукової літератури з теми "Coal gasification China"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Coal gasification China"

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Yang, Yong, Jian Xu, Zhenyu Liu, Qinghua Guo, Mao Ye, Gang Wang, Junhu Gao, et al. "Progress in coal chemical technologies of China." Reviews in Chemical Engineering 36, no. 1 (December 18, 2019): 21–66. http://dx.doi.org/10.1515/revce-2017-0026.

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Анотація:
Abstract China’s unique energy reserve structure abundant in coal and scarce in crude oil and natural gas has promoted heavy investment on the research and development of clean coal chemical technologies during last two decades, which has turned China into a heartland for demonstrating, developing, and commercializing virtually every aspect of new coal chemical process technologies. Consequently, breakthroughs in coal gasification, indirect and direct coal-to-liquid (CTL) processes, and methanol-to-olefins (MTO) technologies are catching attention worldwide. Gasification technology for syngas production is the key to high plant availability and economic success for most coal chemical projects. During the past 20 years, both international and Chinese gasifier vendors have reaped great successes in licensing their technologies in the domestic market. Notably, the local vendors have been investing heavily on inventing and improving their technologies to suit the specific requirement of gasifying a variety of coals. The opposed multinozzle gasification technology from East China University of Science and Technology was taken as an example to demonstrate the recent development in this field. The coal chemical industry in China has witnessed several notable achievements in chemical engineering progress, namely CTL (indirect and direct) and MTO. Comprehensive reviews on topics such as catalysis, kinetics, and reactor design and process integration will be provided by leading scientists in related fields with firsthand information to showcase the contributions of Chinese researchers to chemical engineering science and technology.
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2

Li, Yan, Guoshun Wang, Zhaohao Li, Jiahai Yuan, Dan Gao, and Heng Zhang. "A Life Cycle Analysis of Deploying Coking Technology to Utilize Low-Rank Coal in China." Sustainability 12, no. 12 (June 15, 2020): 4884. http://dx.doi.org/10.3390/su12124884.

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At present, the excess capacity in China’s coke industry can be deployed to utilize some low-rank coal, replacing coking coal with potential economic gains, energy efficiency, and environmental benefits. This study presents a life cycle analysis to model these potential benefits by comparing a metallurgical coke technical pathway with technical pathways of gasification coke integrated with different chemical productions. The results show that producing gasification coke is a feasible technical pathway for the transformation and development of the coke industry. However, its economic feasibility depends on the price of cokes and coals. The gasification coke production has higher energy consumption and CO2 emissions because of its lower coke yield. Generally speaking, using gasification coke to produce F-T oils has higher economic benefits than producing methanol, but has lower energy efficiency and higher carbon emissions.
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3

Liu, Xiao Di, Tian Yi Hao, Yong Zhang, and Xue Ying Gu. "Update Progress of Pressurized Entrained-Flow Gasifier with Coal Slurry in China." Applied Mechanics and Materials 672-674 (October 2014): 716–22. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.716.

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Анотація:
Coal Water Slurry (CWS) gasification technology has a stable market due to its technical advantages. China did a lot of research and development work in coal slurry gasification technology, which has made considerable progress. Especially CWS gasification technology with Membrane Water Wall which was put into operation in recent years got a significant improvement in terms of safety, fuel flexibility, reliability and continuous operation cycles.
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4

Dai, Li, and Hualin Wang. "Removal of Solid Impurities from Coal Gasification Wastewater by Sand Filtration." E3S Web of Conferences 241 (2021): 01001. http://dx.doi.org/10.1051/e3sconf/202124101001.

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Анотація:
Coal gasification wastewater has complex pollutant components and high COD value, and contains a variety of toxic and harmful substances. The treatment of coal gasification wastewater has always been one of the important problems in the development of coal gasification industry in China. In this paper, aiming at the removal of fine particle pollution in coal gasification wastewater, the sand filtration method was used to explore the changes of parameters such as solid content removal, separation accuracy, grade efficiency under the conditions of separating different bed thicknesses. With this separation method, the fine particle pollutants in coal gasification wastewater can be effectively removed by more than 95%, the separation accuracy can reach 0.46 μm. The operation conditions are optimized for further industrial application.
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5

Zheng, Shu, Yixiang Shi, Zhiqi Wang, Pengjie Wang, Gang Liu, and Huaichun Zhou. "Development of new technology for coal gasification purification and research on the formation mechanism of pollutants." International Journal of Coal Science & Technology 8, no. 3 (May 7, 2021): 335–48. http://dx.doi.org/10.1007/s40789-021-00420-w.

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AbstractCoal-fired power generation is the main source of CO2 emission in China. To solve the problems of declined efficiency and increased costs caused by CO2 capture in coal-fired power systems, an integrated gasification fuel cell (IGFC) power generation technology was developed. The interaction mechanisms among coal gasification and purification, fuel cell and other components were further studied for IGFCs. Towards the direction of coal gasification and purification, we studied gasification reaction characteristics of ultrafine coal particles, ash melting characteristics and their effects on coal gasification reactions, the formation mechanism of pollutants. We further develop an elevated temperature/pressure swing adsorption rig for simultaneous H2S and CO2 removals. The results show the validity of the Miura-Maki model to describe the gasification of Shenhua bituminous coal with a good fit between the predicted DTG curves and experimental data. The designed 8–6–1 cycle procedure can effectively remove CO2 and H2S simultaneously with removal rate over 99.9%. In addition, transition metal oxides used as mercury removal adsorbents in coal gasified syngas were shown with great potential. The techniques presented in this paper can improve the gasification efficiency and reduce the formation of pollutants in IGFCs.
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Attwood, T., V. Fung, and W. W. Clark. "Market opportunities for coal gasification in China." Journal of Cleaner Production 11, no. 4 (June 2003): 473–79. http://dx.doi.org/10.1016/s0959-6526(02)00068-9.

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Li, He, and Li. "Experimental Study and Thermodynamic Analysis of Hydrogen Production through a Two-Step Chemical Regenerative Coal Gasification." Applied Sciences 9, no. 15 (July 27, 2019): 3035. http://dx.doi.org/10.3390/app9153035.

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Анотація:
Hydrogen, as a strategy clean fuel, is receiving more and more attention recently in China, in addition to the policy emphasis on H2. In this work, we conceive of a hydrogen production process based on a chemical regenerative coal gasification. Instead of using a lumped coal gasification as is traditional in the H2 production process, herein we used a two-step gasification process that included coking and char-steam gasification. The sensible heat of syngas accounted for 15–20% of the total energy of coal and was recovered and converted into chemical energy of syngas through thermochemical reactions. Moreover, the air separation unit was eliminated due to the adoption of steam as oxidant. As a result, the efficiency of coal to H2 was enhanced from 58.9% in traditional plant to 71.6% in the novel process. Further, the energy consumption decreased from 183.8 MJ/kg in the traditional plant to 151.2 MJ/kg in the novel process. The components of syngas, H2, and efficiency of gasification are herein investigated through experiments in fixed bed reactors. Thermodynamic performance is presented for both traditional and novel coal to hydrogen plants.
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8

Wu, Zhi Qiang, Shu Zhong Wang, Jun Zhao, Lin Chen, and Hai Yu Meng. "Co-Gasification Characteristic and Kinetic Analysis of Spent Mushroom Compost and Bituminous Coal." Applied Mechanics and Materials 577 (July 2014): 71–76. http://dx.doi.org/10.4028/www.scientific.net/amm.577.71.

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Co-gasification of biomass and coal is increasingly considered as a promising technology for sustainable utilization of coal and large-scale use of biomass. Co-gasification characteristic and kinetic analysis are the basic and essential information for the application of this technology. In this paper, co-gasification behavior of a typical bituminous coal from western China and spent mushroom compost (SMC) was investigated through thermogravimetric analyzer. The temperature interval was from ambient temperature to 1000 ○C with various heating rates (10, 20, 40 ○C•min-1) under carbon dioxide atmosphere. Kinetic parameter was solved through Distribution Activation Energy Model (DAEM). The results indicated that he maximum decomposition rates of the mixture and SMC were higher than that of coal except 25% SMC. Slightly synergistic effect during the co-gasification was found. The average values of the activation energy were 25.07 kJ•mol-1 for bituminous coal, 204.47 kJ•mol-1 for 25% SMC, 123.14 kJ•mol-1 for 50% SMC, 144.05 kJ•mol-1 for 75% SMC and 227.50 kJ•mol-1 for SMC, respectively.
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9

Chen, Zhi, Feng Zhu, Youjun Zhang, Weiping Lv, and Zheng Zhang. "Development of gasification agent injection tool for underground coal gasification." E3S Web of Conferences 267 (2021): 02056. http://dx.doi.org/10.1051/e3sconf/202126702056.

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Анотація:
The underground coal gasification (UCG) technology is basically mature, but the influence of its own process and tools slows down its industrialization progress. This paper introduced the development and field test of two new UCG coiled-tubing gasification agent injection tools. The test results show that the two kinds of gasification agent injection tools ensure the injection point under control by conducting downhole temperature measurement and ground monitoring jointly. The problem that the tool is burnt by the backfire is solved by designing a backfire prevention device. To realize low pressure drop, the gasification agent flow channel inside the tool is designed optimally to keep the tool pressure drop not more than 0.5 MPa and the system pressure drop not more than 3 MPa. The tool overall has the characteristics of low pressure drop, high temperature resistance, backfire prevention and anti burning to satisfy the demand of the field test. This technology is a new achievement in the development of UCG technology and equipment in China. The research conclusions can provide technical reference for developing a new generation of UCG technology.
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Zhao, Ruifang, Yulong Wang, Yonghui Bai, Yongfei Zuo, Lunjing Yan, and Fan Li. "Effects of fluxing agents on gasification reactivity and gas composition of high ash fusion temperature coal." Chemical Industry and Chemical Engineering Quarterly 21, no. 2 (2015): 343–50. http://dx.doi.org/10.2298/ciceq140614035z.

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Анотація:
A Na-based fluxing agent Na2O (NBFA) and a composite fluxing agent (mixture of CaO and Fe2O3 with mass ratio of 3:1, CFA for short) were used to decrease the ash fusion temperature of the Dongshan and Xishan coal from Shanxi of China and make these coal meet the requirements of the specific gasification process. The main constituents of the fluxing agents used in this study can play a catalyst role in coal gasification. So it is necessary to understand the effect of fluxing agents on coal gasification reactivity and gas composition. The results showed that the ash fusion temperature of the two coal used decreased to the lowest point due to the eutectic phenomenon when 5 wt% of CFA or NBFA was added. Simultaneously, the gas molar ratio of H2/CO changed when CFA was added. A key application was thus found where the gas molar ratio of H2/CO can be adjusted by controlling the fluxing agent amount to meet the synthetic requirements for different chemical products.
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Більше джерел

Дисертації з теми "Coal gasification China"

1

Yeung, Hon-chung, and 楊漢忠. "Clean technology advancement in the power industry." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31253908.

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2

Dai, Yue. "Coal gasification in China : policies, innovation, and technology transfer." 2013. http://hdl.handle.net/2152/21780.

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Анотація:
With its burgeoning energy consumption and emissions of greenhouse gases (GHGs), China is central to addressing the problem of climate change. As the world leader in GHG emissions for years, China is under tremendous international pressure in the fight against climate change. Focusing on China's coal-to-chemicals industriesa major user of coal and significant contributor to GHG and other emissions in Chinathis thesis seeks to explain how national policies have affected the deployment of coal gasification in China. The data and information for this thesis were mainly collected from interviews with experts from Chinese and U.S. companies, relevant government reports, and other Internet sources. First, I present the current state of energy consumption and the development status of related industries that are applying gasification technologies in China. I then present related policies and pilot projects for the development of gasification technology and analyze how these affect the Chinese gasification market. I analyze factors that have promoted a change in the mode of partnership between foreign firms and Chinese firms (from licensing contracts to joint ventures), and how joint ventures are enabling gasification technology transfer currently. Finally, I argue how the underlying conditions create drivers that promote gasification technology transfer despite China’s weak IP regime.
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Книги з теми "Coal gasification China"

1

The United States of America and the People's Republic of China experts report on integrated gasification combined-cycle technology (IGCC). Oak Ridge, TN: Office of Scientific and Technical Information, 1996.

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Частини книг з теми "Coal gasification China"

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Liu, Shuqin, Chuan Qi, Zhe Jiang, Yanjun Zhang, Maofei Niu, Yuanyuan Li, Shifeng Dai, and Robert B. Finkelman. "Mineralogy and geochemistry of ash and slag from coal gasification in China: a review." In Coal Geology of China, 187–205. Routledge, 2020. http://dx.doi.org/10.4324/9780429449369-9.

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Тези доповідей конференцій з теми "Coal gasification China"

1

Azikhanov, S. S., E. K. Nepomnyashchikh, and A. R. Bogomolov. "Steam Gasification of Bituminous Coals with CaO Additives." In 9th China-Russia Symposium “Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection". Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/coal-18.2018.23.

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2

Chen, Yanpeng, Hao Chen, Dong Zhen, Shanshan Chen, Junjie Xue, and Mengyuan Zhang. "Development Foundation and Technical Countermeasure of Middle-Deep Underground Coal Gasification in China." In The 10th International Symposium on Project Management, China. Riverwood, NSW, Australia: Aussino Academic Publishing House, 2022. http://dx.doi.org/10.52202/065147-0102.

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3

Verfondern, Karl, and Werner von Lensa. "Nuclear Coal Gasification for Hydrogen and Synthetic Fuels Production." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29176.

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Анотація:
The most abundantly available fossil fuel on Earth is coal. For countries like China, the USA, South Africa, or Germany, coal plays a dominant role as energy resource. The introduction of nuclear energy into coal refinement processes would be a significant contribution to the saving of resources, lowering specific carbon emissions and reducing dependencies on oil and natural gas imports. In Germany, comprehensive R&D activities were conducted within the project “Prototype Plant Nuclear Process Heat” (PNP) to investigate the utilization of nuclear energy from a pebble-bed HTGR in both steam-coal gasification and hydro-gasification. A major component to be newly developed was the gas generator. Its operation on semitechnical scale confirmed the feasibility of allothermal, continuous coal gasification under nuclear conditions. A key problem remained the selection of appropriate high temperature materials for gas generator and other high temperature heat exchanging components. The project was accompanied by comprehensive safety studies targeting tritium contamination and consequences of potential explosions of flammable gas mixtures. Future activities could take benefit from a reevaluation of the studies conducted in the past by comparing HTGR process heat applications against current technologies. Fossil fuel market conditions and environmental effects shall be considered. Superior safety features and high reliability are prerequisites for the introduction of nuclear process heat and nuclear combined heat and power.
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4

Zhou, Yigong. "The Development and Prospects of Coal-Fired Power Conservation Technologies in China." In ASME 2011 Power Conference collocated with JSME ICOPE 2011. ASMEDC, 2011. http://dx.doi.org/10.1115/power2011-55407.

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Анотація:
This paper analyzes the applications and prospects of supercritical/ultra-supercritical power generation technology, integrated coal gasification cycle combination (IGCC) power generation technology, double reheat supercritical power generation technology, large-scale air-cooled power generation technology and modern thermal power system integration and optimization technology in China’s coal-fired power conservation.
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5

Shen, Jun. "Global Analysis of Shell Key Gasification Equipment Based on Finite Element Method." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28182.

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Coal gasification is a key technology for clean coal conversion with high efficiency. During the past decade, more than twenty Shell Key Gasification Equipments (SKGE) used in the Shell Coal Gasification Process (SCGP) have been built in coal-to-chemicals industry in China. SKGE comprise the Gasifier and Syngas cooler connected by Transfer duct. The support skirt of the Gasifier base was fixed, while the Syngas cooler side was supported by a constant hanger (floating support). Therefore the design by rule is not applicable to the strength calculation of pressure vessels of the system. In this paper, a FE model of global analysis of the largest SKGE system in China to date was established which considered thirteen loads and twenty-four load combinations. In this model, FEA software ANSYS was used to calculate the global dynamic effect of this 2000-ton system. The whole structural deformation and stress distribution, force and moment on several specified cross sections of SKGE under different load combinations are also determined within this model, which is the prerequisite and foundation for accurate calculation of each key part (e.g. connection between Transfer duct and Gas reversal chamber), and essential safety of SKGE system.
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6

Chen, Wei, Yunlei Wang, Kalyan Annamalai, Jiafeng Sun, and Zhimin Xie. "Dewatering Studies on the Low Rank China Lignite Using N2, CO2 and Air." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-44035.

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Анотація:
The integrated gasification and combined cycle (IGCC), uses low rank coal (higher moisture and volatile contents and lower heating value) as fuel for gasification (e.g Texaco gasifier of Tampa electric with low ash coal) and convert the solid fuel into synthetic gas mainly consisting of CO and H2. During the storage of fresh low rank but highly reactive coals near the IGCC plants, the coals undergo drying and low temperature atmospheric oxidation which raises the temperature, reduces the moisture and eventually causes spontaneous ignition if the temperature rises above about 800 °C in the coal piles for bituminous and 500 °C for lignite coals. Thus it is of interest to understand the dewatering mechanism of the low rank lignite by drying samples using N2, CO2 and air (which represents partial oxidation) as drying mediums. Fundamental experiments were performed on dewatering of coal samples using thermo-gravimetric analysis (TGA) with different particle sizes and drying mediums. A wide range of drying temperatures from 100 to 225 °C with a step of 25 °C was investigated at a residence time of about 30 minutes. There are no significant differences among moisture weight loss curves for the three drying mediums. It was found that the lignite lost only 5% mass at about 100 °C. With further increase in temperatures most of the mass loss occurred within the temperature range of 120 to 170 °C. The maximum moisture release rate occurred for the temperatures between 125 °C and 140 °C and hence serves as the optimal temperature range for removing the moisture. When drying temperature was below 140 °C, highest moisture release rate occurred in N2 environment while for CO2 environment, optimal temperature rose beyond 140 °C. The structure of the dewatered lignite samples were further investigated through Scanning Electron Microscopy (SEM) studies. When experiments were repeated in air, ignition occurred and corresponding ignition temperatures were obtained. The larger particles reveal lower ignition temperatures.
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7

Wang, Yafeng, Yuegang Tang, Yuegang Tang, John P. Hurley, John P. Hurley, Xin Guo, Xin Guo, et al. "MINERALOGY AND TRACE ELEMENT GEOCHEMISTRY OF ENTRAINED-FLOW COAL GASIFICATION RESIDUES FROM NORTHWEST CHINA." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-359883.

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8

Shen, Jun, Yunlong Wu, Heng Peng, and Yinghua Liu. "Case Study of Seismic Response for Shell Key Gasification Equipment Based on Transient Dynamic Analysis." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63897.

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Анотація:
Coal gasification is a key technology for clean coal conversion with high efficiency. During the past decade, more than twenty Shell Key Gasification Equipments (SKGE) used in the Shell Coal Gasification Process (SCGP) have been built in coal-to-chemicals industry in China. SKGE is composed of Gasifier and Syngas cooler which are connected by Transfer duct. The support skirt of the Gasifier base is fixed, while the Syngas cooler side is supported by a constant hanger (floating support). In this paper, a FE model of the largest 2000-ton SKGE system in China is established by using ANSYS. The global dynamic response under the seismic load is simulated. In order to verify the correction of the calculation, the results are also compared with that by using ABAQUS. Compared to the traditional static analysis, it can be found that the deformation and stress distribution, the force and moment on several specified cross sections of SKGE change over time under seismic load based on the transient dynamic analysis. As the result of the seismic analysis is the prerequisite and foundation for accurate calculation of each key part (e.g. connection between Transfer duct and Gas reversal chamber), the seismic analysis is one of the most important analyses in the Gasification design, which will ensure the essential safety of SKGE system.
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9

Finckh, H. H., and R. Mueller. "The Development of Integrated Coal-Gasification Power Plants With Clean Combustion in Germany." In ASME 1985 Beijing International Gas Turbine Symposium and Exposition. American Society of Mechanical Engineers, 1985. http://dx.doi.org/10.1115/85-igt-47.

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Анотація:
As advances are made in flue-gas clean-up systems, such as electrostatic precipitators, wet and dry desulfurization techniques and deNOX catalysers, the environmental impact of conventional steam turbine power plants fired with pulverized coal can be reduced at great expense in the form of additional capital investment and lowered station efficiency. The clean fuel gas obtainable from various coal-gasification processes, however, can be used to generate electricity with excellent efficiency and low-pollution emissions in low-cost unfired combined-cycle power plants of modular design. These are termed GUD power plants from the German designation “Gas und Dampf” meaning gas and steam. The overall efficiency is appreciably enhanced by closely integrating the gas-production process with the power generating cycle. Such an integrated coal-gasification combined-cycle installation should thus allow China to exploit its vast coal reserves for electrical energy production in both the most economical and environmentally acceptable way.
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10

Wang, Yuzhang, and Yiwu Weng. "Analysis on Integrated Gasification Humid Air Turbine System With Air Blown Gasifier." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26770.

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Анотація:
With the gradual scarcity of fossil fuels and the emergency demand of greenhouse gas emission reduction, coal, as the major energy source of China in a long time of future, should be used efficiently and cleanly. The integrated gasification humid air turbine (IGHAT) system is a promising clean coal utilization technology. In order to investigating the performance of IGHAT, the models of IGHAT system were developed based on Aspen Plus software. The effects of key parameters (such as air/coal ratio, humidifying capacity, air entering the compressor) on the optimal performance and efficiency of IGHAT system were studied in detail. The results show the efficiency of power generation of IGHAT system with air blown gasifier can arrive at 48.62%. The efficiency of IGHAT system and the inlet gas temperature of turbine arrive at the maximum value when the air/coal ratio is 2.7. The humidifying capacity has a great effect on the efficiency of IGHAT system, and there is a reasonable range for each system. These results will be useful for us to select the parameters of the IGHAT system and understand the essence of IGHAT system.
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