一种低变质煤微波热解过程分析  

ANALYSIS OF LOW METAMORPHIC COAL DURING MICROWAVE PYROLYSIS

作　　者：兰新哲[1] 裴建军[1] 宋永辉[1] 苏婷[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西省冶金工程技术研究中心,西安教授710055

出　　处：《煤炭转化》2010年第3期15-18,共4页Coal Conversion

基　　金：国家科技支撑计划项目(2009BAA20B01);国家"973"预研项目(2009CB226114)

摘　　要：微波闪速热解是低变质煤转化的一种新工艺.研究了微波加热条件下原煤粒度变化对热解产品质量和收率的影响.结果表明,微波加热条件下,10min左右煤料温度可达到750℃,22min焦油收率就可达到12%左右,比常规加热提高4%;热解煤气中氢气、一氧化碳和甲烷含量大幅度提高;原料煤粒度对各种产品的收率影响不大.因此该工艺可用于粉煤的快速热解,为煤气的进一步综合利用奠定了基础.The relationship between particle size of coal and quality of pyrolysis production during microwave heating are studied, and the change of gas composition in different time is analyzed by gas analyzer. The results show that the coal＇s temperature can reach to 750 ℃ within 10 min and tar yield is 12% within 22 min, which has increased by 4% compared with conventional heating. The content of hydrogen, carbon monoxide and methane in pyrolysis gas increase significantly. The size of raw coal particle has little effect on the yield of a variety of products. It shows that this technology can be used for rapid coal pyrolysis, and lay the foundation for the comprehensive utilization of coal gas.

关 键 词：煤 粒度 微波 热解 

分 类 号：TQ530.2[化学工程—煤化学工程]