富氢气氛下煤热解特性的研究  

COAL PYROLYSIS UNDER HYDROGENRICH GASES

作　　者：廖洪强[1] 孙成功[1] 李保庆[1] 刘泽常 

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 [2]山东矿院济南分院化工系

出　　处：《燃料化学学报》1998年第2期114-118,共5页Journal of Fuel Chemistry and Technology

基　　金：自然科学基金;北京中关村地区测试中心资助

摘　　要：选用云南先锋褐煤在１０ｇ固定床反应器中分别与总压（３ＭＰａ）和氢分压（３ＭＰａ）下的氢气，氮气，合成气以及焦炉煤气共热解，通过比较它们的热解特性来考察合成气和焦炉煤气替代纯氢作加氢热解反应气氛的可能性。实验结果表明，与相同总压的加氢热解相比，焦炉气与合成气气氛下煤热解总转化率及焦油收率均略有降低且水分有所增加，煤焦炉气共热解焦油中ＢＴＸ和萘的收率与之相当；与相同氢分压下的加氢热解相比，煤焦炉气（合成气）共热解半焦和焦油收率以及焦油中ＢＴＸ，ＰＣＸ和萘的收率及含量均明显增加，但同时水分也增加。To improve the economy of the pyrolysis process by reducing the hydrogen cost, it is suggested to use cheaper hydrogenrich gases (such as cokeoven gas (COG), synthesis gas (SG)) instead of pure hydrogen Pyrolysis of Chinese Xianfeng lignite is carried out with real COG and SG at 3-5MPa and the final temperature of 650℃ with heating rate of 5℃/min in 10g fixedbed reactor and compared with coal pyrolysis under pure hydrogen and nitrogen at the same conditions The results indicate that compared with hydropyrolysis at the same total pressure, the total conversion and the tar yields from coal pyrolysis under COG and SG decreased and the unwanted water increased However, at the same H_2 partial pressure, the tar yields and yields of BTX, PCX and naphthalene from pyrolysis of coal with COG and SG are all significantly higher than those of hydropyrolysis Therefore, it is possible to use COG and SG instead of pure hydrogen

关 键 词：煤 加氢热解 焦炉气 合成气 热解 

分 类 号：TQ530.2[化学工程—煤化学工程]