高温燃烧红外吸收法测定煤中全硫.pdf

高温燃烧红外吸收法测定煤中全硫 徐运周军 葛振平 (宁波环境监测中心 宁波315012) 摘要介绍了红外吸收测定煤中全硫的方法、原理以及与其它方法的比较。煤样在高温的氧气流中充分燃 烧，试样中各种形态的硫分解出来生成二氧化硫和少量三氧化硫，由红外检测器将气体浓度转换成电压信号进行检 测。本文采用国产的红外测硫仪测定煤中全硫，试验结果表明准确度和精密度符合监测要求；与化学方法相比较，该 方法快捷简单、快速、分析精度高。 关键词红外吸收法；煤中全硫 中图分类号0659 DeterminationofTotal inCoal Combustion Sulfur byHighTemperature andInfrared Method Absorption Xu Yun，ZhouJun，GeZhenping Environmental (Ningbo MonitoringCenter，Ningbo，315012，China) infrared andthe withother Abstractr11lis introducedthe method．the paper absorption principle comparison methodsforthedeterminationofthetotalsulfurincoal．Coalcombustsin flowof high—temperatureoxygen，and intosulfur andasmallamountofsulfur variousformsofsulfurinthe are dioxide trioxide；when samplesgenerated theiIlfrared convertsconcentrationto candetect．Inthis determination dete。ctor gas voltagesignal，we paper，the in hadbeen withthedomesticsulfur instrumentandthetestresults oftotalsulfurcoal investigated IR—·measuring to with showedthatthe and ofthismethodconformedthe accuracyprecision monitoringrequirements．Compared thechemical methodis and methods，thissimple，rapidhighlyperceptive． wordsInfrared sulfurincoal method；total Key absorption 1 引 言