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Wang X.,China Huaneng Group Clean Energy Research Institute | Gao S.,China Huaneng Group Clean Energy Research Institute | Liu L.,State Key Laboratory of Coal Based Clean Energy | Wang J.,China Huaneng Group Clean Energy Research Institute
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | Year: 2012

CO2 mineral sequestration, that minerals react with CO2 to form solid carbonates for permanent storage, can reduce the atmospheric CO2 concentration as a novel climate change mitigation strategy. In this paper, the recent development of mineral sequestration was stated and the future trend of research work was suggested after analysis. Besides, a novel process of integration of CO2capture and mineralization was demonstrated. This process can overcome the barriers of high energy penalty, low efficiency and produce high value by-products to offset the cost of CCS. © 2012 Chinese Society for Electrical Engineering.

Chen X.,China Huaneng Group Clean Energy Research Institute | Chen X.,State Key Laboratory of Coal Based Clean Energy | Chen X.,North China Electrical Power University | Shi S.,China Huaneng Group Clean Energy Research Institute | And 8 more authors.
Huagong Xuebao/CIESC Journal | Year: 2014

Integrated gasification combined cycle (IGCC) power generation is an advanced and next generation coal-fired power generation technology, can provide clean and low-cost electricity for the users, and will play an important role in the future development of high-efficiency and zero-emissions power plants. CO2 capture technology before burning should be very suitable for IGCC system. Based on IGCC technical features, a CO2 capture process before burning, consisting of MDEA acid gas removal and wet oxidation sulfur recovery steps, is proposed in this paper. The feasibility study of application in IGCC system is verified by process simulation calculation. The results show that this process works well for acid gas removal, and the efficiency for separating CO2 and H2S from syngas can reach 99% and 98.5% respectively. However, the overall efficiency of power supply by IGCC, obtained by calculation, declines about 10 percent from 45.35% to 35.16%, when the CO2 capture process before burning is introduced into IGCC system. The three main factors of decrease of total efficiency are steam consumption, fuel chemical energy loss and new auxiliary power increase, and they could be used for determining optimization direction. © All Rights Reserved.

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