中文摘要：

以CH4为燃料对基于CaSO4载氧体的化学链燃烧的热力学性能进行了分析研究,计算了CaSO4在CH4氛围中的还原-氧化的热力学参数与温度的关系,分析结果显示,在一定的温度范围内,以CaSO4为载氧体实现化学链燃烧具有可行性,是一种理想的载氧体。基于Gibbs能最小化方法建立了化学链燃烧技术模型,模拟了温度,CH4与CaSO4摩尔比对燃料反应器和空气反应器的影响。结果表明,燃料反应器最佳反应温度850℃～900℃,空气反应器最佳反应温度为1000℃～1050℃,CH4与CaSO4的摩尔比最佳摩尔比为1。研究结果对燃煤化学链燃烧具有参考价值。

英文摘要：

Chemical-looping combustion of nature gas using CaSO4as an oxygen carrier was presented.The thermodynamics property of reduction and oxidation reaction of CaSO4was studied with nature gas as fuel ,the relation between thermodynamics parameter and temperature was obtained to investigate the possibility of reaction in the oxidation and reduction reactor,from the analysis,we got the information that using CaSO4as an oxygen carrier during the chemical-looping combustion is feasible in appropriate temperature range. The chemical-looping combustion model was established by the methods of Gibbs energy minimization.In the reduction and oxidation reactor,the reaction of CH4and CaSO4was investigated with the increase of the temperature and the mole ratios of CH4and CaSO4.The results show that the optimal temperature range of reduction reactor and the oxidation reactor is 1 000℃～1 050℃ and 850℃～900℃respectively,the optimal mole ratio is CH4/CaSO4=1.The research results have referenced value to the coal gasified chemicallooping combustion.