文献类型：期刊文献

中文题名：煤化程度和升温速率对热分解影响的研究

英文题名：STUDY ON THE EFFECT OF COAL RANK ANDHEATING RATE ON THE PYROLYSIS

作者：朱学栋[1];朱子彬[1];朱学余[2];张成芳[1]

机构：[1]华东理工大学化工工艺研究所,上海200237;[2]山东济南化纤公司二厂,济南250000

年份：1999

卷号：22

期号：2

起止页码：43

中文期刊名：煤炭转化

外文期刊名：Coal Conversion

收录：CSTPCD;;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：煤;煤化程度;热解;热重分析;升温速率

外文关键词：coal; coal rank; pyrolysis; thermogrametry; heating rate

摘要：采用非等温热重法考察了我国八种煤的热解过程．研究表明：煤热解过程分为三个阶段，其中第二阶段为热解的主要区间，温度范围为２５０℃～３２０℃，占总失重的７０％～８０％，随煤化程度的提高，初始热解温度从３００℃增加到４６０℃；随升温速率的提高，热重积分曲线向高温区偏移，煤样热解的最大失重速率温度随之提高；最终失重量由煤化程度和热解的终温决定，升温速率对其没有影响．
Pyrolysises of & rank of Chinese coals were studied by means of thermogrametric analysis under non--isothermal conditions. The results showed the pyrolytic process ofcoal can be divided into three stages, in which the second stage, the temperature range is about250 ℃. --320 ℃, is the main process of the weight loss, 70%--80% of total volatile matter. By theimproving of coal rank, the initiate temperature of coal pyrolysis is increased from 300℃ --460 ℃.While the heating rate is enhanced, the temperature of maximum rate of coal weight loss is increased. The ultimate yields of total volatile are determined by the coal rank and the final pyrolysis temperature, and the effect of heating rate on the yield is not important at 900℃.