大雁褐煤在N_2气氛中热解时各元素的迁移规律  

Elements Migration Law of Dayan Lignite During Pyrolysis in N_2 Atmosphere

作　　者：王张卿[1] 梁杰[1] 史龙玺 朱汉青[1] 田海洋[1] 李爽[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《煤炭工程》2015年第10期128-131,共4页Coal Engineering

基　　金：国家高技术研究发展计划(863计划)资助项目(2011AA050106);高等学校学科创新引智计划资助(B14006)

摘　　要：原煤经热解过程后C、H、O、N、S将按照一定比例迁移到热解产物中,将通过大雁褐煤在N2气氛中的固定床低温慢速热解实验来确定各元素的迁移比例,定量地研究热解过程各元素的迁移规律,并将其应用于煤炭地下气化平衡模型的热解阶段中,对预测地下气化工艺的出口煤气和污染物产量及组分有重要的意义。研究结果表明:随着热解终温的升高,热解产物中灰渣和气化纯碳的各元素迁入量均逐渐减小,而热解气体中各元素的迁移量逐渐增加。During coal pyrolysis,a certain percentage of each element（ C,H,O,N,S） will transferred from raw coal into pyrolysis products,in this paper Dayan coal is heated at the atmosphere of N2 in the fixed bed at low temperatures and heating rate in order to get the transferred ratio and study the transferred law quantitatively,which can be applied in the stage of pyrolysis of UCG equilibrium model and predict the yields and components of the syngas and contaminants in the outlet hole. The results show that： when the end temperature of pyrolysis increases,the transferred ratios of each element in the ash and gasification carton decrease,but the ratios of the pyrolysis gas raise.

关 键 词：固定床 低温慢速热解 煤炭地下气化 元素迁移规律 热解产物 

分 类 号：TQ546[化学工程—煤化学工程]