蓄热燃烧装置中在线分析仪的选型探讨
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摘要
蓄热燃烧(RTO)装置常用于处理煤化工装置排放的挥发性有机化合物(VOCs)尾气,简述了RTO工艺和混合可燃气体爆炸下限体积分数(LEL)的计算方法。以某煤化工项目低温甲醇洗的排放尾气为测量对象,着重介绍了火焰温度型分析仪、催化燃烧型气体探测器、氢焰式工业气相色谱仪和红外线气体分析仪的测量原理及主要优缺点,并对试样传输滞后时间进行了估算,给出了在线分析仪测量低温甲醇洗尾气时的选型建议。
Regenerative thermal oxidizer(RTO)plant is commonly used to dispose volatile organic compounds(VOCs)exhausted from coal-to-chemicals plants.The RTO process and calculation methods for volume fraction of lower explosion limit(LEL)of mixing combustion gas are briefly introduced.According to use off-gases from rectisol plant in one coal-tochemicals project as measuring object,the measuring principle and main advantage and disadvantage of flame temperature(FTA)analyzer,catalytic combustion(CAT)gas detector,flame ionization detector(FID)process gas chromatography and infrared(IR)analyzer are introduced with emphasis.The lag time of sample gas transportation is estimated.As to the off-gases from rectisol plant,the recommendations of type selection for on-line analyzer are provided.
Regenerative thermal oxidizer(RTO)plant is commonly used to dispose volatile organic compounds(VOCs)exhausted from coal-to-chemicals plants.The RTO process and calculation methods for volume fraction of lower explosion limit(LEL)of mixing combustion gas are briefly introduced.According to use off-gases from rectisol plant in one coal-tochemicals project as measuring object,the measuring principle and main advantage and disadvantage of flame temperature(FTA)analyzer,catalytic combustion(CAT)gas detector,flame ionization detector(FID)process gas chromatography and infrared(IR)analyzer are introduced with emphasis.The lag time of sample gas transportation is estimated.As to the off-gases from rectisol plant,the recommendations of type selection for on-line analyzer are provided.
引文
[1]抚顺石油化工研究院,中国环境科学研究院.GB 31571-2015石油化学工业污染物排放标准[S].北京:环境科学出版社,2015.
[2]王西明,张宏伟,吴丽娟.VOCs处理技术在煤制气项目的选用[J].煤炭加工与综合利用,2016(08):36-38,43.
[3]武丽娜,陈睿谦,徐莹,等.确定混合燃气爆炸极限的重要意义及计算方法[J].化肥设计,2014,52(02):18-21.
[4]望蛟赟.惰洗塔放空尾气爆炸极限计算[J].化肥设计,2017,55(01):37-40.
[5]姚克磊.可燃气体探测器在工程应用中的新思路[J].仪器仪表用户,2018,25(02):42-44.
[6]王森.在线分析仪器手册[M].北京:化学工业出版社,2008.
[7]孙磊,黄步余,任军,等.SH/T 3174-2013石油化工在线分析仪系统设计规范[S].北京:中国石化出版社,2013.
[8]潘路,李选民,欧阳晓东.可燃气体检测仪的校正系数及其应用[J].工业安全与环保,2005,31(03):36-38.
[9]林融,黄步余,任军,等.SH/T 3005-2016石油化工自动化仪表选型设计规范[S].北京:中国石化出版社,2016.
[2]王西明,张宏伟,吴丽娟.VOCs处理技术在煤制气项目的选用[J].煤炭加工与综合利用,2016(08):36-38,43.
[3]武丽娜,陈睿谦,徐莹,等.确定混合燃气爆炸极限的重要意义及计算方法[J].化肥设计,2014,52(02):18-21.
[4]望蛟赟.惰洗塔放空尾气爆炸极限计算[J].化肥设计,2017,55(01):37-40.
[5]姚克磊.可燃气体探测器在工程应用中的新思路[J].仪器仪表用户,2018,25(02):42-44.
[6]王森.在线分析仪器手册[M].北京:化学工业出版社,2008.
[7]孙磊,黄步余,任军,等.SH/T 3174-2013石油化工在线分析仪系统设计规范[S].北京:中国石化出版社,2013.
[8]潘路,李选民,欧阳晓东.可燃气体检测仪的校正系数及其应用[J].工业安全与环保,2005,31(03):36-38.
[9]林融,黄步余,任军,等.SH/T 3005-2016石油化工自动化仪表选型设计规范[S].北京:中国石化出版社,2016.