煤热解气中汞连续测量方法及应用  

New Method of Mercury Continuous Measurement and its Applications in Coal Pyrolysis Gas

作　　者：张璧[1] 罗光前[1] 徐萍[1] 邓章 姚洪[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《工程热物理学报》2015年第1期215-219,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51161140330;No.51006041;No.U1261204)

摘　　要：针对煤热解气中烃类物质对连续测汞仪的影响,本文采用高温载氧体处理煤热解气消除此影响,研究了煤热解气处理后汞连续测量的效果并进行实际应用。结果表明:烃类物质造成冷原子吸收测汞仪测量结果完全错误。经载氧体处理后氧化了热解气中烃类物质,使热解气中汞能被准确连续测量。使用前后载氧体XRD分析也验证这一结果。在煤程序升温热解汞的连续测量应用中,发现实验所用煤中汞主要有两个温度释放峰,且在600℃已基本释放完全。Hydrocarbons in coal pyrolysis gas can interferes the continuous mercury analyzer.A pretreatment method with high temperature oxygen carrier was proposed to eliminate the interference.The results showed that hydrocarbons have a big impact on continuous mercury analyzer.After being treated by the high temperature oxygen carrier,the mercury concentration in coal pyrolysis gas can be accurately continuous measured.The XRD analysis of oxygen carrier also verified this result.

关 键 词：煤热解气 汞 连续测量 载氧体 烃类物质 

分 类 号：TQ530.2[化学工程—煤化学工程]