摘要
化学链燃烧能在化石燃料燃烧能量释放的同时有效分离CO2.以CaSO4作为载氧体,在CO和H2作为还原剂的条件下,对CaSO4的氧化-还原反应进行了基于吉布斯最小自由能化学反应的理论计算,绘出化学反应的平衡相图,分析出在氧化态和还原态下平衡相图中都有CaSO4,CaS和CaO稳定存在的区域.通过控制温度和气体反应物的浓度,就可以得到在化学链燃烧中所需要的CaS和CaSO4的稳定区.
Chemical-looping combustion offers a solution to separate CO2 where no energy is lost. With CO, H2 as reducer, the thermomechanical property of reduction and oxidation reaction of CaSO4 was studied by Gibbs free energy, and phase equilibrium of reaction was got. The result shows that there is a region stabilization of CaSO4,CaS,CaO in reducing and oxidizing atmosphere from the phase. We can get the region stabilization of CaSO4 and CaO that chemical looping combustion needs by changing temperature and concentration of reactant
出处
《煤炭转化》
CAS
CSCD
北大核心
2008年第3期1-4,共4页
Coal Conversion
基金
国家重点基础研究发展规划(973)项目(2006CB20030201
2006CB705806)
国家自然科学基金资助项目(90610016)
国家高技术研究发展计划(863)项目(2006AA05Z318)
关键词
化学链燃烧
载氧体
CO2分离
chemical looping combustion,oxygen carrier,CO2 separation
