H_2气氛中低变质煤微波热解研究  

STUDY ON MICROWAVE PYROLYSIS OF LOW RANK COAL UNDER H_2 ATMOSPHERE

作　　者：周军[1] 杨哲[2] 吴雷 张秋利[1] 兰新哲[4,5] 尚文智 

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 [2]西安建筑科技大学冶金工程学院,西安硕士生710055 [3]新疆化工设计研究院有限责任公司,乌鲁木齐助理工程师830006 [4]陕西广播电视大学,西安教授博士生导师710119 [5]陕西省冶金工程技术研究中心,西安710055 [6]神木县三江煤化工有限责任公司,陕西榆林719300

出　　处：《煤炭转化》2015年第3期22-26,共5页Coal Conversion

基　　金：陕西省科技统筹创新工程重大科技项目(2011KTDZ01-05-04);陕西省教育厅科研计划项目(12JK0583);榆林市科技计划项目(2012173)

摘　　要：在定制微波炉中进行了H2气氛中低变质煤的微波热解实验研究,系统考察了微波功率、热解时间、煤样粒度和氢气流量等对低变质煤微波热解产品收率及成分的影响.研究表明,低变质煤在微波功率为800W,热解时间为40min,煤样粒度为5mm^10mm,氢气流量为0.4L/min的优化工艺条件下热解,兰炭收率达59.8%,液体产品(煤焦油和热解水)收率达28.2%.热解获得的煤焦油中烷烃类化合物含量高达45.2%,兰炭中酚羟基和羰基官能团含量较高,固定碳含量高,硫和挥发分含量低.To explore systematicly the effect of microwave power, pyrolysis time, particle size of coal samples and hydrogen flow rate on the yield and composition of microwave pyrolysis products of low rank coal, it was suggested to carry out the co-pyrolysis experiment of the low rank coal under hydrogen atmosphere through the single factor experiment in the customized microwave oven. The results indicated that the yield of the blue-coke and liquid products were up to 59.8% and 28.2% respectively when the optimal process conditions With the microwave power of 800 W, pyrolysis time of 40 min, coal samples particle size of 5 mm-10 mm and hydrogen flow rate of 0.4 L/min was selected. The content of alkane hydrocarbons in the coal tar obtained by microwave pyrolysis of coal was up to 45. 2%. The content of functional groups with phenolic hydroxyl and carbonyl in the blue-coke was higher relatively, and the content of fixed carbon was higher, the content of sulfur and volatile matter were lower.

关 键 词：微波热解 氢气 兰炭 煤焦油 

分 类 号：TQ530.2[化学工程—煤化学工程]