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中文摘要：
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．
英文摘要：
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
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