微波场中长焰煤与焦煤共热解实验研究  

MICROWAVE CO-PYROLYSIS STUDY ON LONG FLAME COAL AND COKING COAL

作　　者：宋永辉[1] 苏婷[1] 兰新哲[1] 裴建军[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,西安副教授硕士生导师710055

出　　处：《煤炭转化》2011年第3期7-10,26,共5页Coal Conversion

基　　金：国家973预研项目(2009CB226114);国家支撑计划项目(2009BAA20B01);榆林市科技计划项目

摘　　要：对王家沟(WJG)长焰煤和焦煤(JM)两种原料煤进行了微波共热解实验研究,考察了两种煤配比不同时热解产物的收率及成分变化.结果表明,微波热解条件下,随着混煤中JM比例的增大,焦油收率在逐渐减少,而固体焦的灰分含量与硫含量逐渐增加.SEM照片也表明,固体焦表面的微孔结构越来越多,微孔的边界越来越清晰.煤气中CO2,CO,CH4和CnHm含量在3 min以前随热解时间的延长均逐渐增加,随后逐步减少.随着混煤中JM配比的增大,热解煤气中CO2和CO含量逐渐减少,但CH4和CnHm含量在3 min以前变化不是很明显,在3 min^15 min区间逐渐增加.The microwave co-pyrolysis of Wangjiagou（WJG） long flame coal and coking coal（JM） were carried out in this study to know about the changes of yield and composition of coal pyrolysis product with the different ratio of two raw coals.The results showed that under microwave pyrolysis conditions,the tar yield was gradually reduced with the proportion of JM coal increases,while the ash content and sulfur content of solid coke increased,and the SEM pictures showed the area of porous surface in the solid structure of coke was bigger,the porous borders became increasingly clear.The content of CO2,CO,CH4,and CnHm were gradually increased with the pyrolysis time before 3 min then started to decreased.With the JM mixing ratio increase,the CO2,CO levels have diminished,but the change of CH4 and CnHm content was not obvious before 3 min,while increased in the 3 min-15 min interval.

关 键 词：低变质煤 焦煤 微波 热解 煤气 

分 类 号：TQ530.2[化学工程—煤化学工程]