长焰煤热解特性及产物性质研究  

STUDY ON PYROLYSIS CHARACTERISTICS AND PRODUCT PROPERTIES OF CANDLE COAL

作　　者：徐春霞[1] 王鹏[1] 董卫果[1] 郭良元[1] 

机构地区：[1]煤炭科学研究总院北京煤化工研究分院,煤炭资源高效开采与洁净利用国家重点实验室,北京助理研究员硕士100013

出　　处：《煤炭转化》2014年第1期1-4,10,共5页Coal Conversion

基　　金：煤炭科学研究总院基础研究基金资助项目(2012JC02)

摘　　要：以一种典型长焰煤为研究对象,采用立式管式热解炉、卧式管式热解炉和气相色谱仪等装置,系统研究了不同热解温度下该长焰煤的热解特性.结果表明,受二次反应的影响,随干馏终温的升高焦油产率略有减少,半焦产率略有增加;分段干馏煤气中H_2与CO的含量均随温度的升高而增加,CH_4的含量随温度的升高先增加后减少,在600℃左右达到最大值;800℃以上混合干馏煤气中,H_2的含量最高且随干馏终温的升高而增加;半焦挥发分含量随干馏终温的升高逐渐降低;900℃以上基本保持不变,并分析了900℃干馏所得煤焦油的基本性质.In this paper,a typical candle coal was selected as the research sample.The pyrolysis characteristics of this candle coal at different pyrolysis temperature were systematically studied by using vertical tubular pyrolysis oven,horizontal tubular pyrolysis oven,gas chromatography etc.The result showed that with the increase of pyrolysis temperature,the productivity of coal tar slightly decreased and the productivity of semi-coke slightly increased,affected by the secondary reactions.With the increase of temperature,the content of hydrogen and carbon monoxide in subsection coal gas increased; the content of methane first increased then decreased,maximized at about 600 ℃.The content of hydrogen in mixed coal gas is the highest over 800 ℃,and the content of hydrogen increased with the increase of temperature.The volatile content of semi-coke decreased with the increase of temperature,but almost remain unchanged over 900 ℃.Fundamental properties of coal tar produced by pyrolysis at 900 ℃ were analyzed at the end.

关 键 词：热解 热解产物 煤气组成 煤焦油 

分 类 号：TQ530.2[化学工程—煤化学工程]