燃料化学学报2011，Vol.39Issue(3)：161-168,8.
化学链燃烧中CaSO4复合载氧体的实验研究
Investigation into compound CaSO4 oxygen carrier for chemical-looping combustion
摘要
Abstract
In this study chemical-looping combustion of methane with compound CaSO4 oxygen carrier prepared by impregnation method was investigated in a fixed bed reactor. The effects of reaction temperature, CH4 percent, particle size and sample mass on reduction were discussed and an appropriate condition was determined by contrastive experiments. The results show that Ni-Fe mixed additive greatly improves the reactivity of CaSO4,and the suitable reaction temperature is around 925 ℃. Carbon deposition is inhibited and higher gas conversion is obtained by lower CH4 percent and more sample mass. However, the sample particle size has a little effect on the reduction. The long-time reduction-oxidation test demonstrates that compound CaSO4 oxygen carrier has a higher conversion. X-ray diffraction analysis reveals that CaSO4 could be fully reduced into CaS which is also almost oxidized into CaSO4.关键词
化学链燃烧/CaSO4复合载氧体/Ni-Fe混合添加剂/CH4Key words
chemical-looping combustion/ compound CaSO4 oxygen carrier/ Ni-Fe mixed additive/ CH4引用本文复制引用
丁宁,郑瑛,罗聪,吴琪珑,傅培舫,郑楚光..化学链燃烧中CaSO4复合载氧体的实验研究[J].燃料化学学报,2011,39(3):161-168,8.基金项目
国家重点基础研究发展规划(973计划,2011CB707301) （973计划,2011CB707301）
国家自然科学基金(50906031,50721005). （50906031,50721005）
