置换燃烧新型载氧体CaSO_4的化学热力学性能分析  

The Analysis of Chemical Thermomechanical Property on New Oxygen Carrier CaSO_4 Used in Chemical Looping Combustion

作　　者：卢海勇[1] 沈来宏[1] 肖军[1] 

机构地区：[1]东南大学洁净煤发电及燃烧技术教育部重点实验室,江苏南京210096

出　　处：《锅炉技术》2007年第5期47-50,共4页Boiler Technology

摘　　要：以H2、CO作为还原剂对CaSO4的还原-氧化反应的热力学性能进行了研究,得到了CaSO4的还原-氧化反应的吉布斯自由能与温度的关系和反应的平衡相图。研究结果表明,当温度低于1 045℃时,适当控制H2、CO浓度,CaSO4的还原产物仅有CaS,而无CaO、SO2;当温度低于1 140℃时,CaS的氧化产物仅有CaSO4,而无CaO和SO2。研究结果为CaSO4置换燃烧分离CO2的实验研究提供了理论依据。With H2 ,CO as reducer, the thermomechanical property of reduction and oxidation reaction of CaSO4 was studied, the relation between Gibbs free energy and temperature and phase equilibia of reaction were got, the results show that the reductive product of CaSO4 is only CaS instead of CaO and SO2 below 1 045 ℃ with controlling H2%and CO% ; the oxidative product of CaS is only CaSO4 instead of CaO and SO2 below 1 140 ℃, Some useful results provide reference for the experiment on the chemical looping combustion with inherent separation of CO2.

关 键 词：置换燃烧 CaSO4载氧体 CO2分离 

分 类 号：TK223.23[动力工程及工程热物理—动力机械及工程]