基于TG-GC-MS系统的硫在煤热解过程中迁移研究  

Migration Study of Sulfur in Coal Pyrolysis Process Based on TG-GCMS System

作　　者：万克记 邢耀文[1] 刘雪景[1] 冯莉[1] 苗真勇[1] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116

出　　处：《煤炭技术》2015年第5期304-306,共3页Coal Technology

基　　金：国家自然科学基金委员会创新研究群体科学基金项目(50921002);中央高校基本科研业务费专项资金资助项目(2014XT05)

摘　　要：热重-气相色谱仪-质谱(TG-GC-MS)联用在线分析系统对煤热解过程中硫的迁移实现追踪,总离子流(TIC)图显示热解气体中SO2峰丰度出现先轻微下降后升高而后再下降现象,分析揭示了SO2产生主要来自低温段磺酸基的分解和高温段大量硫自由基、氧自由基的结合2个方面。Thermogravimetry-gas chromatograph-mass spectrometry(TG-GC-MS) coupling,an on-line analysis system,is used to accurately track sulfur migration,and the total ion current(TIC) figure shows that the abundance of SO2 peak decreases after slightly climbing up and then declining.It reveals that SO2 production mainly derives from two aspects that one is the combination of a large number of sulfur radicals and oxygen radicals at high temperature,and the other one is the decomposition of sulfonic acid groups at low temperature.

关 键 词：TG-GC-MS 热解 二氧化硫 迁移 

分 类 号：O657.63[理学—分析化学] TQ530.2[理学—化学]