煤热解焦油产率影响因素研究  

Study on Influence Factors of Pyrolysis Tar in Coal

作　　者：张茸茸[1] 杜美利[1] 易鑫[1] 王水利[1] 

机构地区：[1]西安科技大学化学与化工学院,西安710054

出　　处：《煤炭技术》2017年第4期306-308,共3页Coal Technology

基　　金：国家自然科学基金资助项目(41172142;41672154)

摘　　要：煤热解是煤炭清洁利用的一种有效途径,对新疆小红沟煤进行低温热解,探讨热解工艺因素对焦油产率的影响。结果表明:热解工艺中热解终温和催化剂影响较大,分别使焦油产率较原煤提高0.57%和0.77%。通过最佳热解条件分析,发现影响焦油产率顺序为溶胀>热解终温>升温速率>催化剂>超声波>保温时间,经过对各种因素分析得出的最佳工艺参数为热解终温570℃,升温速率12℃/min,催化剂1∶20,超声波处理15 min,保温时间18 min。此时,煤样焦油产率16.76%,较原煤提高7.63%。Coal pyrolysis is an effective way to clean use of coal, using Xinjiang Xiaohonggou coal low- temperature pyrolysis, investigate the effect of factors on the tar yield. The results show that： the pyrolysis process of pyrolysis final moderate catalyst, the pyrolysis process final pyrolysis mild catalyst greater impact, respectively compared with coal tar yield of 0.57% and 0.77%. Through the best pyrolysis condition analysis, found to affect the order of tar yield： swelling〉 final pyrolysis temperature〉 heating rate 〉catalysts〉ultrasonic 〉holding time, After analyzing the various factors of optimum process parameters for： final pyrolysis temperature 570℃, the heating rate 12℃/min, catalyst 1：20, ultrasonic treatment for 15 rain, heat preservation time 18 min. In this case, coal tar yield of 16.76%, 7.63% increase compared with coal.

关 键 词：低温热解 焦油 产率 

分 类 号：TQ530.2[化学工程—煤化学工程] TQ523