化工学报Issue(7)：2656-2663,8.DOI:10.11949/j.issn.0438-1157.20141772
内构件固定床反应器中不同水分煤的热解特性
Pyrolysis of coal with different moisture contents in fixed-bed reactor with internals
摘要
Abstract
The effects of coal moisture on heating rate and product distribution for pyrolysis of coal in a fixed-bed reactor with or without internals were investigated. The results showed that the reaction time in the reactor without internals is approximately twice of the time in the reactor with internals. With utilization of internals to enhance heat transfer and regulate the pyrolysis gas flow direction inside the reactor, increasing the coal moisture content prolonged the time that required to heat up the coal at the bed center to the preset temperature and increased the light tar content, whereas the tar yield tended to first increase and then decrease and the yields of pyrolysis gas and water tended to increase. In contrast, there was not dramatic difference in the reactor without internals when varying the coal moisture. At a heating furnace temperature of 900℃, the increase of coal moisture from 0.41%to 11.68%(mass) increased the tar yield from 9.21%to 10.74%(mass) for the reactor with internals, but when the coal moisture content increased further to 15.93%(mass) the tar yield decreased to 10.26%(mass). The variation trend with coal moisture content in the average pyrolysis gas composition was similar for both reactors, and the higher heating value (HHV) became lower when the coal moisture increased.关键词
煤热解/内构件/煤水分/二次反应/反应调控Key words
coal pyrolysis/internals/coal moisture content/secondary reaction/reaction control分类
化学化工引用本文复制引用
胡二峰,张纯,武荣成,付晓恒,许光文..内构件固定床反应器中不同水分煤的热解特性[J].化工学报,2015,(7):2656-2663,8.基金项目
国家重点基础研究发展计划项目（2011CB201304）；国家自然科学基金云南联合基金项目（U1302273）；国家国际科技合作专项资助项目（2013DFG60060）；中国科学院战略性先导科技专项“低阶煤清洁高效利用关键技术与示范”（XDA07050400）；国家自然科学基金项目（21306209,21106156）。 （）
