In this paper, we have proposed a novel coal-based hydrogen production system with low emission. In this novel system, a pressure swing adsorption production process and a cryogenic capture process are well integrated to gain comprehensive performance. In particular, through sequential connection between the pressure swing absorption (PSA) production process and the capture unit, the concentration of PSA purge gas that enters the capture unit can reach as high as 70%, which results in as much as 90% of to be separated from mixed gas as liquid at a temperature of . This will reduce the quantity and quality of cold energy required for cryogenic separation method, and the solidification of is avoided. The adoption of cryogenic energy to capture enables direct production of liquid at low pressure and thereby saves a lot of compression energy. Besides, partial recycle of the tail gas from recovery unit to PSA inlet can help enhance the amount of hydrogen product and lower the energy consumption for production. As a result, the energy consumption for the new system’s hydrogen production is only with 94% of captured, which is 9.2% lower than that of the coal-based hydrogen production system with Selexol removal process and is only 2.6% more than that of the coal-based hydrogen production system without recovery. More so, the energy consumption of recovery is expected to be reduced by 20–60% compared with that of traditional separation processes. Further analysis on the novel system indicates that synergetic integration of the production process and cryogenic recovery unit, along with the synthetic utilization of energy, plays a significant role in lowering energy penalty for separation and liquefaction. The promising results obtained here provide a new approach for removal with low energy penalty.
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March 2010
Research Papers
A Novel Coal-Based Hydrogen Production System With Low Emissions
Gang Xu,
Gang Xu
Beijing Key Laboratory of Energy Safety and Clean Utilization, Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, School of Energy and Power Engineering,
North China Electric Power University
, Beijing 102206, China
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HongGuang Jin,
HongGuang Jin
Institute of Engineering Thermophysics,
e-mail: hgjin@mail.etp.ac.cn
Chinese Academy of Sciences
, Beijing 100080, China
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YongPing Yang,
YongPing Yang
Beijing Key Laboratory of Energy Safety and Clean Utilization, Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, School of Energy and Power Engineering,
North China Electric Power University
, Beijing 102206, China
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Liqiang Duan,
Liqiang Duan
Beijing Key Laboratory of Energy Safety and Clean Utilization, Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, School of Energy and Power Engineering,
North China Electric Power University
, Beijing 102206, China
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Wei Han,
Wei Han
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100080, China
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Lin Gao
Lin Gao
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100080, China
Search for other works by this author on:
Gang Xu
Beijing Key Laboratory of Energy Safety and Clean Utilization, Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, School of Energy and Power Engineering,
North China Electric Power University
, Beijing 102206, China
HongGuang Jin
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100080, Chinae-mail: hgjin@mail.etp.ac.cn
YongPing Yang
Beijing Key Laboratory of Energy Safety and Clean Utilization, Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, School of Energy and Power Engineering,
North China Electric Power University
, Beijing 102206, China
Liqiang Duan
Beijing Key Laboratory of Energy Safety and Clean Utilization, Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, School of Energy and Power Engineering,
North China Electric Power University
, Beijing 102206, China
Wei Han
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100080, China
Lin Gao
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100080, ChinaJ. Eng. Gas Turbines Power. Mar 2010, 132(3): 031701 (9 pages)
Published Online: December 2, 2009
Article history
Received:
March 22, 2009
Revised:
April 5, 2009
Online:
December 2, 2009
Published:
December 2, 2009
Citation
Xu, G., Jin, H., Yang, Y., Duan, L., Han, W., and Gao, L. (December 2, 2009). "A Novel Coal-Based Hydrogen Production System With Low Emissions." ASME. J. Eng. Gas Turbines Power. March 2010; 132(3): 031701. https://doi.org/10.1115/1.3159369
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