This paper proposes a novel multifunctional energy system (MES), which cogenerates coke, hydrogen, and power, through the use of coal and coke oven gas (COG). In this system, a new type of coke oven, firing coal instead of COG as heating resource for coking, is adopted. The COG rich in is sent to a pressure swing adsorption (PSA) unit to separate about 80% of hydrogen first, and then the PSA purge gas is fed to a combined cycle as fuel. The new system combines the chemical processes and power generation system, along with the integration of chemical conversion and thermal energy utilization. In this manner, both the chemical energy of fuel and thermal energy can be used more effectively. With the same inputs of fuel and the same output of coking heat, the new system can product about 65% more hydrogen than that of individual systems. As a result, the thermal efficiency of the new system is about 70%, and the exergy efficiency is about 66%. Compared with individual systems, the primary energy saving ratio can reach as high as 12.5%. Based on the graphical exergy analyses, we disclose that the integration of synthetic utilization of COG and coal plays a significant role in decreasing the exergy destruction of the MES system. The promising results obtained may lead to a clean coal technology that will utilize COG and coal more efficiently and economically.
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e-mail: hgjin@mail.etp.ac.cn
e-mail: sunshien@gmail.com
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September 2009
Research Papers
Proposal of a Novel Multifunctional Energy System for Cogeneration of Coke, Hydrogen, and Power
Hongguang Jin,
Hongguang Jin
Institute of Engineering Thermophysics,
e-mail: hgjin@mail.etp.ac.cn
Chinese Academy of Sciences
, Beijing 100190, P.R.C.
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Shien Sun,
Shien Sun
Institute of Engineering Thermophysics,
e-mail: sunshien@gmail.com
Chinese Academy of Sciences
, Beijing 100190, P.R.C.; Graduate University of Chinese Academy of Sciences
, Beijing 100190, P.R.C.
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Wei Han,
Wei Han
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100190, P.R.C.
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Lin Gao
Lin Gao
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100190, P.R.C.
Search for other works by this author on:
Hongguang Jin
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100190, P.R.C.e-mail: hgjin@mail.etp.ac.cn
Shien Sun
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100190, P.R.C.; Graduate University of Chinese Academy of Sciences
, Beijing 100190, P.R.C.e-mail: sunshien@gmail.com
Wei Han
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100190, P.R.C.
Lin Gao
Institute of Engineering Thermophysics,
Chinese Academy of Sciences
, Beijing 100190, P.R.C.J. Eng. Gas Turbines Power. Sep 2009, 131(5): 052001 (8 pages)
Published Online: May 26, 2009
Article history
Received:
September 8, 2008
Revised:
September 23, 2008
Published:
May 26, 2009
Citation
Jin, H., Sun, S., Han, W., and Gao, L. (May 26, 2009). "Proposal of a Novel Multifunctional Energy System for Cogeneration of Coke, Hydrogen, and Power." ASME. J. Eng. Gas Turbines Power. September 2009; 131(5): 052001. https://doi.org/10.1115/1.3078791
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