煤焦中的硫化钙在循环流化床燃烧室中的反应模型  

A MODEL FOR THE REACTIONS OF CaS IN COAL GASIFIER CHAR IN CIRCULATING FLUIDIZED BED COMBUSTOR

作　　者：李定凯[1] 吕子安[1] 

机构地区：[1]清华大学煤的清洁燃烧技术国家重点实验室,北京100084

出　　处：《中国电机工程学报》2003年第7期196-200,共5页Proceedings of the CSEE

摘　　要：煤经过部分气化后的半焦中含有CaS。当半焦在循环流化床燃烧室(CFBC)中燃烧时,其中的CaS发生氧化-还原反应而释放出SO2。 该文在单颗粒CaS的氧化-还原反应的原理计算模型的基础上,建立了半焦燃料中的CaS在CFBC中发生反应的总体模型,以预测SO2的排放浓度。用一维CFBC计算机软件计算的结果,能根据CFBC的实际工作条件加以合理地解释,模型计算结果与实验结果吻合很好。There exists calcium sulphide in char derived from partial coal gasification. Sulphur dioxide would emit due to the oxidation-reduction reactions while the char is combusted in circulating fluidized bed combustor (CFBC). Based on the individual first-principle models of oxidation and reduction reactions of single calcium sulphide particle, a comprehensive model for the reactions of calcium sulphide in the coal char occurred in CFBC has been developed to predict emission concentration of sulphur dioxide. The calculational results obtained by a one-dimension CFBC computer program can be reasonably explained according to the practical conditions of CFBC. The result of the model prediction is good in agreement with experimental data.

关 键 词：煤焦 硫化钙 循环流化床燃烧室 反应模型 循环流化床锅炉 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]