A novel CaO-based CO2 capture system Integrated with SOFC
Capturing C02 from fossil fuel combustion is of importance in the C02-constrained world for mitigation of climate warming.In this paper,based on a 600MW coal-fired power plant,a novel calcium oxide(Ca0)-based carbon dioxide(C02)capture system integrated with SOFC(solid oxide fuel cell)has been proposed.The OTM(oxygen ion transport membrane)subsystem and C02 compression and heat recovery unit are also integrated in the whole system.The separated high temperature C02 gas by Ca-based C02 removal subsystem is completely used to heat the air entering into the OTM subsystem which is used to produce the required pure oxygen for the oxyfuel combustion reaction.With the Aspen Plus software,this paper builds the models of the overall integration system including every process such as SOFC,OTM and heat recovery steam generator unit.The effects of the key parameters such as the calcination temperature and C02 capture rate on the performance of the overall system are deeply investigated.In addition,this paper discusses the performance change laws of fuel cell stack and total system when the calcination temperature changes from 850 t0 910℃ and C02 capture rate changes from 85%t0 92%.The research results show that the total system efficiency reaches 40.96%when the C02 capture rate is 85%and the calcinaion temperature is set at 910℃.The efficiency of the new integration system is even 0.36 percent point higher than that of the original 600MW coal-fired power plant with the efficiency of 40.6%.The research achievements will provide the feasible way for further study on C02 recovery with lower energy penalty from the fossil fuel power plant.
Ca0-C02 capture SOFC OTM Aspen-plus Integration system
Liqiang DUAN Xiaohui SONG Jing BIAN Xinming CHEN Jingnan ZHU Ran LI Yongping YANG
School of Energy Power and Mechanical Engineering,National Thermal Power Engineering & Technology Research Center;Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education,North China Electric Power University,Beijing,102206,China
国际会议
桂林
英文
1-15
2013-07-16（万方平台首次上网日期，不代表论文的发表时间）