准东煤燃烧中矿物质转化行为的CCSEM研究  

Mineral transformation during Zhundong coal combustion by CCSEM

作　　者：樊斌[1,2] 于敦喜[1] 曾宪鹏[1] 吕为智[1] 吴建群[1] 徐明厚[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074 [2]景德镇陶瓷学院材料科学与工程学院,江西景德镇333403

出　　处：《化工学报》2016年第5期2117-2123,共7页CIESC Journal

基　　金：国家重点基础研究发展计划项目(2013CB228501);国家自然科学基金项目(51376071);新世纪优秀人才支持计划项目(NCET-11-0192)~~

摘　　要：在沉降炉中进行了准东煤的燃烧实验,利用计算机控制扫描电镜技术(computer controlled scanning electron microscopy,CCSEM)研究了煤中矿物质的转化行为。研究表明煤中主要矿物为方解石、高岭石、含铁类物质以及未分类矿物,燃烧后灰中石英、铁的氧化物、白云石的含量急剧增加,未分类矿物和方解石的含量下降。同时对3种重要致渣元素Na、Fe、Ca在燃烧前后的矿物转化行为及颗粒粒径分布进行了详细研究。The mineralogy of Zhundong coal and its combustion-generated particles were characterized in detail by computer controlled scanning electron microscopy（CCSEM）. The experiment was done on a lab-scale drop tube furnace. The results showed that there were calcite, kaolinite, pyrite, pyrrhotite, oxidized pyrrhotite and unclassified minerals in Zhundong coal. The mass fraction of quartz, iron oxide and dolimite increased sharply, while the mass fraction of calcite and unclassified minerals decreased. Also, the behaviors of Na, Fe and Ca as the important elements to the ash deposition, and their particle size distributions were investigated.

关 键 词：燃料 煤燃烧 反应 CCSEM 矿物转化 

分 类 号：TK24[动力工程及工程热物理—动力机械及工程]