双流化床中煤的热解特性试验研究  

Experimental Research on Pyrolysis Characteristics of Coal in Dual Fluidized Beds

作　　者：吕清刚[1] 刘琦[1] 那永洁[1] 赵科[1] 贺军[1] 

机构地区：[1]中国科学院工程热物理研究所,北京市海淀区100080

出　　处：《中国电机工程学报》2010年第8期15-19,共5页Proceedings of the CSEE

摘　　要：在双流化床试验台上，对神木煤的热解特性进行了试验研究。结果表明，在试验温度范围内，煤中的碳元素主要汇集于燃烧炉尾气，氢元素主要汇集于热解炉产物中。在热解炉温度450—850℃的范围内，热解产品质量收率随着热解炉温度的升高而上升，热解炉冷效率在550℃达到峰值。试验条件下，热解焦油质量收率在热解温度550℃时达到峰值；热解停留时间对热解焦油的产率影响不大。热解炉煤气各组分体积分数关系为：H2〉CH4〉CO〉CO2；随着热解炉温度升高，热解气体热值降低，热解气体产率升高。Experimental researches of shenmu bituminous coal pyrolysis characteristics were completed in a dual fluidized beds test rig. Results show that carbon releases in gasifer, mostly, while hydrogen releases in pyrolyzer mostly. In the range of 450-850 ℃ of pyrolysis temperature, the pyrolysis products yield increases with temperature, the pyrolysis efficiency reaches the highest in 550 ℃ of pyrolysis temperature. The tar yield reaches the highest in 550℃ of pyrolysis temperature, the pyrolysis time has few impact on the pyrolysis process. The volume proportion of in the pyrolysis gas has a relation of H2〉CH4〉CO〉CO2, the heat value decreases while the gas yields increases with the temperature.

关 键 词：流化床 热解 煤气 焦油 

分 类 号：TQ530[化学工程—煤化学工程] TQ546