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.
出处
《煤炭转化》
CAS
CSCD
北大核心
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)
关键词
微负压
快速热解
半焦
micro-negative pressure, fast pyrolysis, semi-coke
