微负压系统中煤快速催化热解半焦特性的研究  

CHARACTERISTICS STUDY ON SEMICOKE FROM COAL FAST CATALYTIC PYROLYSIS UNDER MICRO-NEGATIVE PRESSURE CONDITIONS

作　　者：常娜[1,2] 徐德龙[2] 陈延信[2] 甘艳萍[2] 

机构地区：[1]西安建筑科技大学材料科学与工程博士后科研流动站,西安博士后讲师710055 [2]西安建筑科技大学材料学院,西安教授博士生导师710055

出　　处：《煤炭转化》2013年第2期52-55,共4页Coal Conversion

基　　金：西安建筑科技大学西部建筑科技国家重点实验室(筹)开放基金资助项目(10KF05)

摘　　要：对煤催化热解产生半焦的收率、灰分含量、挥发分含量和结构等特性进行了分析,结果表明,催化剂的加入提高了煤炭的转化率,降低了半焦的产率,同时半焦的挥发分含量减小,固定碳和灰分含量提高.催化剂的加入降低了半焦收率,MnO2促进了半焦的纵向和横向热缩聚,使半焦的结晶程度增大;CaO加入促进了半焦的纵向热缩聚而阻碍了横向热缩聚;Fe2O3和TiO2的加入阻碍了煤焦基本晶格单元纵向热缩聚.In order to investigate the effects of catalyst on characteristics of semi-coke from the coal fast pyrolysis process, the characteristics of semi-coke including yield, ash content, volatile component content, and structure were studied. The results show that catalyst could de- crease the semi-coke yields while improve the volatile release, which caused the decrease of vola- tile component content and the increase of fixed carbon and ash contents in semi-coke. MnO2 pro- moted the transverse and longitudinal thermal polycondensation of basic lattice in semi-coke, CaO could promote the longitudinal thermal polycondensation and hindered the transverse thermal polycondensation of basic lattice in semi-coke, and Fe2O3 and TiO2 hindered the longitudinal ther- mal polycondensation of basic lattice in semi-coke.

关 键 词：微负压 快速热解 半焦 

分 类 号：TQ426.6[化学工程] TQ530.2