摘要
为提高化学链燃烧中Ca SO4载氧体的机械强度和反应活性,采用机械混合法制备了负载甘油、硅溶胶以及拟薄水铝石惰性载体的Ca SO4载氧体,并对其机械强度、反应特性等进行了实验研究。结果表明,甘油和硅溶胶的加入可显著提高Ca SO4载氧体的机械强度,而拟薄水铝石作用较小。热重还原实验表明,甘油和硅溶胶的加入可加快载氧体与甲烷的反应速率,缩短反应时间。XRD分析表明,惰性载体的加入不会影响Ca SO4向Ca S转化,Ca SO4接近完全转化。
In order to improve the mechanical strength and reactivity of CaSO4 oxygen carrier,the addition of glycerinum,silica sol and pseudo-boehmitewere to CaSO4 oxygen carriers was applied by mechanical mixing,and the effect on the mechanical strength and the characteristics of reaction was experimentally investigated.The results show that the addition of glycerinum and silica sol significantly improves the mechanical strength of CaSO4 oxygen carrier,while the pseudo-boehmite has little effect.TGA results indicate that the addition of glycerinum and silica sol can accelerate the reaction rate and decrease the reaction time.The XRD analysis demonstrates that the addition of binders doesn＇t affect the conversion from CaSO4 to CaS and the conversion is nearly complete.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2015年第3期367-371,共5页
Journal of Fuel Chemistry and Technology
基金
国家重点基础研究发展规划(973计划
2011CB201502)
中国博士后科学基金(2014M551978)
关键词
化学链燃烧
载氧体
硫酸钙
机械强度
chemical looping combustion
oxygen carrier
calcium sulfate
mechanical strength
作者简介
联系作者：赵瑞东，Tel：0532-80662764，E—mail：zrd_gscas@126．com；
吴晋沪，Tel：0532-80662761，E-mail：wujh@qibebt．ac．ca。
