A Polygeneration System Based on Multi-Input Chemical Looping Combustion †

Energies

Xiaosong Zhang¹  Sheng Li²  Hongguang Jin² 

[1] Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;

关键词: chemical looping;    hydrogen production;    multi-input fossil fuel;    polygeneration;   

DOI  :  10.3390/en7117166

来源: mdpi

【 摘 要 】

This paper proposes a polygeneration system based on a multi-input chemical looping combustion system, which generates methanol and electricity, through the use of natural gas and coal. In this system, the chemical looping hydrogen (CLH) production system and the coal-based methanol production system are integrated. A high quality fuel, natural gas, is used to improve the conversion ratio of coal. The Gibbs energy of the two kinds of fuels is fully used. Benefitting from the chemical looping process, 27% CO₂ can be captured without energy penalty. With the same outputs of methanol and electricity, the energy savings ratio of the new system is about 12%. Based on the exergy analyses, it is disclosed that the integration of synthetic utilization of natural gas and coal plays a significant role in reducing the exergy destruction of the new system. The promising results obtained in this paper may lead to a clean coal technology that will utilize natural gas and coal more efficiently and economically.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.