宁东气化厂煤气化过程中几种微量元素的富集特性  

Some Trace Elements Enrichment Features during Coal Gasification Process in Ningdong Coal Gasification Plant

作　　者：王晓帅[1] 唐跃刚[1] 桓斌斌 徐靖杰 

机构地区：[1]中国矿业大学,北京100083

出　　处：《中国煤炭地质》2016年第4期14-18,共5页Coal Geology of China

基　　金：国家重点基础研究发展计划(973)资助项目(2014CB238900);中国矿业大学(北京)2014年大学生创新项目(C201402032)

摘　　要：运用等离子体质谱分析法、原子荧光法等方法对宁东气化厂气化过程煤及其残渣进行了V、Cr、Cu、Zn、Ba、Se、As、Pb微量元素含量的测定与分析。结果表明：气化过程中这8种微量元素与原煤相比多数表现富集的趋势,相同元素不同气化残渣富集程度可达2~10倍;气化用煤中亲石元素表现出较好的相关性;根据GB15618-1995《土壤环境质量标准》,气化残渣中As、Cu、Pb、Cr、Zn元素可直接排放,其它元素需继续关注和进一步研究其环境效应。Through plasma mass spectrometric, atomic fluorescence spectrometric methods carried out trace elements V, Cr, Cu, Zn,Ba, Se, As and Pb content determination and analysis for coal and its residue during coal gasification process in the Ningdong coal gasification plant. The result has shown that compared with in the raw coal, the majority of these elements have showed better enrichment trend during gasification, enrichment extent of different gasified residues of same element can be 2~10 times as high. The lithophile elements in the gasification coal showed better correlativity. Based on the GB15618-2008＂Environmental Quality Standards for Soils＂, elements As, Cu, Pb, Cr and Zn can be directly discharged, as for other elements should be continued to pay attention to and study their environmental effects further.

关 键 词：微量元素 气化过程 相关性 富集特性 宁东气化厂 

分 类 号：TQ534.9[化学工程—煤化学工程]