煤的多段加氢热解热重研究  

STUDY ON MULTI-STAGE HYDROPYROLYSIS OF COAL BY THERMOGAVIMETRY

作　　者：李文[1] 李保庆[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室

出　　处：《燃料化学学报》1996年第6期480-484,共5页Journal of Fuel Chemistry and Technology

基　　金：日本NEDO资助

摘　　要：本文在加压热天平上考察了５℃／ｍｉｎ和２５℃／ｍｉｎ的升温速率下先锋褐煤、大同烟煤和兖州高硫煤的多段加氢热解过程。实验表明：采用快速升温、多段停留的手段可以达到或超过慢速升温过程的转化率。快速升温过程中的多段停留效果比慢速升温的要显著。对先锋、大同煤，６００℃停留效果比５００℃时明显，而对兖州煤则正好相反。多段加氢热解是一种较理想的煤的前脱硫方法，可使兖州煤的脱硫率达９０％以上。The multi-stage hydropyrolysis of Xianfeng lignite,Datong bituminous coal and Yanzhou high sulfur coal was investigated at heating rate of 5℃/min and 25℃/min in a pressurized thermobalance.The results show that the conversion of coal at high heating rate in multi-stage hydropyrolysis is higher than that at constantly slow heating rate.The effect of keeping temperature at 500℃ or 600℃ for 10min at high heating rate is more pronounced than that at slow heating rate. The increase extent of conversion with keeping temperature at 600℃ is more markedly than that at 500℃ for Xianfeng and Datong coal,but the result is opposite for Yanzhou coal.The multi-stage hydropyrolysis process is an ideal desulfurization method for pro-combustion utilization,which makes the sulfur removal of Yanzhou coal up to 90%.

关 键 词：煤 加氢热解 热重曲线 煤转化 热解 

分 类 号：TQ530.2[化学工程—煤化学工程]