调控煤灰流动特性的气化配煤研究进展  

Review on gasification blending coal regulation of coal ash flow characteristics

作　　者：马修卫 李风海[1,2] 樊红莉[2] 赵姬[1] 沈玉霞[3] 马名杰[1] 

机构地区：[1]河南理工大学化学化工学院,河南焦作454000 [2]菏泽学院化学化工系,山东菏泽274000 [3]河南理工大学图书馆,河南焦作454000

出　　处：《应用化工》2017年第1期167-171,共5页Applied Chemical Industry

基　　金：山东省自然科学基金资助项目(ZR2014BM014)

摘　　要：在对气化配煤调控煤灰熔融特性、结渣特性综述的基础上,从矿物质演变和量子化学角度对配煤改变煤灰化学特性机制进行了重点分析。配煤本质上改变了煤灰中易熔矿物与难熔矿物组成和含量,含钙与含铁硅酸盐矿物所形成的低温共熔物是煤灰熔融温度降低主要原因;莫来石、钙矾石、钙铝榴石等高熔点矿物的生成是提高煤灰熔融温度、改善高碱煤结渣特性的重要原因。进一步从煤灰化学组成与矿物组成两个方面对配煤灰熔融特性预测模型进行了阐述。最后对配煤改善煤灰流动特性研究方法和方向提出了建议。The mechanisms of improving coal blending ash chemical characteristics were analyzed from the perspectives of evolution of minerals and quantum chemical calculations. Coal blending changed essentially the composition and content of refractory minerals and fluxing minerals. The formation of calcium minerals and iron minerals were the main reason for decreasing ash fusion temperature; the generation of mullite,ettringite and grossuarite mostly resulted in the increase of ash fusion temperature and improving coal ash slagging characteristics. The prediction models of ash fusion characteristics were reviewed from the aspects of ash chemical and mineral composition. Finally suggestions on future directions and investigation methods of coal blending to improve the flow characteristics of ash were put forward.

关 键 词：气化配煤 熔融特性 结渣特性 调控机制 灰熔融性预测 

分 类 号：TQ53[化学工程—煤化学工程]