塑料与煤低温共焦化的热重研究  

Thermogravimetric Study on Co Carbonization of Coal and Plastics at Low Temperatures

作　　者：李文[1] 田福军[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,山西太原030001

出　　处：《中国矿业大学学报》2000年第5期510-514,共5页Journal of China University of Mining & Technology

基　　金：山西省自然科学基金资助项目!(9810 27);中国科学院留学回国择优支持基金

摘　　要：利用 TG技术研究了 HDPE,PP,PS,PVC,PPVC,煤及其混合物进行了热解失重行为研究 ,结果表明 ,高分子结构中的支链结构降低了聚合物的热稳定性 ,同时高分子结构的相似性也表现为热解失重行为的相似性 ;根据 PVC的热解失重特征 ,选取 30 0℃为脱氯反应的终温 .在模拟煤的低温干馏实验条件下 ,即常压 N2 下采用程序升温由室温以 1 5℃ /min升温至 30 0℃再以 5℃ /min升温至 60 0℃恒温 1 5min,进行八一焦煤同塑料的共热解失重研究表明 ,二者间存在一定的协同效应 ,但相互作用的强弱受煤种、塑料的高分子结构、热解温区的重叠程度。The pyrolysis behaviors of single plastic(HDPE,PP,PS,PVC and PPVC), coal and their mixtures with different ratios were studied by means of TG analysis. The results indicate that the structural similarity in various polymers shows similar behaviors during pyrolysis. The existence of branched chains in polymer structure decreases its thermal stability. In addition, 300 ℃ was selected as the temperature for the dechlorization of PVC according to its TG profile. TG study on co carbonization of Bayi coking coal with and without plastics under the simulating conditions of the low temperature carbonization indicates that there is a synergetic reaction between coal and plastics, which depends on several factors, such as coal rank, types of plastics and the thermogravimetric properties of coal and plastics.

关 键 词：塑料 煤 共焦化 热重分析 聚氯乙烯 PVC 聚烯烃 

分 类 号：TQ530.2[化学工程—煤化学工程] X783.2[环境科学与工程—环境工程]