Gasification is the core unit of coal-based production systems and is also the site where one of the largest exergy destruction occurs. This paper reveals the exergy destruction mechanism of carbon gasification through a combined analysis of the kinetic method and the energy utilization diagram (EUD). Instead of a lumped exergy destruction using the traditional “black-box” and other models, the role of each reaction in carbon gasification is revealed. The results show that the exergy destruction caused by chemical reactions accounts for 86.3% of the entire carbon gasification process. Furthermore, approximately 90.3% of exergy destruction of chemical reactions is caused by the exothermal carbon partial oxidation reaction (reaction 1), 6.0% is caused by the carbon dioxide gasification reaction (reaction 2), 2.4% is caused by the steam gasification reaction (reaction 3), and 1.3% is caused by other reactions under the base condition. With increasing O2 content α and decreasing steam content β, the proportion of exergy destruction from reaction 1 decreases due to the higher gasification temperature (a higher energy level of energy acceptor in EUD), while the proportions of other reactions increase. This shows that the chemical efficiency is optimal when the extent of reactions 1 and 3 is equal and the shift reaction extent approaches zero at the same time.
Skip Nav Destination
Article navigation
November 2017
Research-Article
Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram
Handong Wu,
Handong Wu
Institute of Engineering Thermophysics,
Chinese Academy of Sciences,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: wuhandong@iet.cn
Chinese Academy of Sciences,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: wuhandong@iet.cn
Search for other works by this author on:
Sheng Li,
Sheng Li
Institute of Engineering Thermophysics,
Chinese Academy of Sciences,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: lisheng@iet.cn
Chinese Academy of Sciences,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: lisheng@iet.cn
Search for other works by this author on:
Lin Gao
Lin Gao
Institute of Engineering Thermophysics,
Chinese Academy of Science,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: gaolin@iet.cn
Chinese Academy of Science,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: gaolin@iet.cn
Search for other works by this author on:
Handong Wu
Institute of Engineering Thermophysics,
Chinese Academy of Sciences,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: wuhandong@iet.cn
Chinese Academy of Sciences,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: wuhandong@iet.cn
Sheng Li
Institute of Engineering Thermophysics,
Chinese Academy of Sciences,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: lisheng@iet.cn
Chinese Academy of Sciences,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: lisheng@iet.cn
Lin Gao
Institute of Engineering Thermophysics,
Chinese Academy of Science,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: gaolin@iet.cn
Chinese Academy of Science,
University of Chinese Academy of Sciences,
No. 11 North Fourth Ring Road West,
Haidian District,
Beijing 100190, China
e-mail: gaolin@iet.cn
1Corresponding author.
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received September 26, 2016; final manuscript received May 1, 2017; published online June 15, 2017. Assoc. Editor: Antonio J. Bula.
J. Energy Resour. Technol. Nov 2017, 139(6): 062201 (9 pages)
Published Online: June 15, 2017
Article history
Received:
September 26, 2016
Revised:
May 1, 2017
Citation
Wu, H., Li, S., and Gao, L. (June 15, 2017). "Exergy Destruction Mechanism of Coal Gasification by Combining the Kinetic Method and the Energy Utilization Diagram." ASME. J. Energy Resour. Technol. November 2017; 139(6): 062201. https://doi.org/10.1115/1.4036957
Download citation file:
Get Email Alerts
Cited By
Fatigue-Life Prediction of the Optimized Savonius Vertical-Axis Wind Turbine Composite Blades
J. Energy Resour. Technol
RETROFITING NATURAL-GAS FIRED BOILER FOR HYDROGEN COMBUSTION: OPERATIONAL PERFORMANCE AND NOX EMISSIONS
J. Energy Resour. Technol
Assessing Hydrogen-Ammonia Ratios to Achieve Rapid Kernel Inception in Spark Ignition Engines
J. Energy Resour. Technol
Artificial Intelligence for thermal energy storage enhancement: A Comprehensive Review
J. Energy Resour. Technol
Related Articles
A Comparative Study of Syngas Production From Two Types of Biomass Feedstocks With Waste Heat Recovery
J. Energy Resour. Technol (September,2018)
Advanced Concepts in Modular Coal and Biomass Gasifiers
J. Energy Resour. Technol (January,2019)
Investigation of the Predicting Ability of Single-Phase Chemical Equilibrium Modeling Applied to Circulating Fluidized Bed Coal Gasification
J. Energy Resour. Technol (May,2016)
Novel Coal-Steam Gasification With a Thermochemical Regenerative Process for Power Generation
J. Energy Resour. Technol (September,2018)
Related Proceedings Papers
Related Chapters
Numerical Simulation Research on a Fixed Bed Gasifier
International Conference on Information Technology and Management Engineering (ITME 2011)
Combined Cycle Power Plant
Energy and Power Generation Handbook: Established and Emerging Technologies
Coal Gasification
Energy and Power Generation Handbook: Established and Emerging Technologies