第39卷第4期电站系统工程Vol.39No.42023年7月PowerSystemEngineering25文章编号:1005-006X(2023)04-0025-04挥发分含量对典型烟煤燃烧的气体产物析出特性影响研究*陈文1王志杰1何洪浩1宾谊沅1龚勋21.国网湖南省电力有限公司电力科学研究院(高效清洁火力发电技术湖南省重点实验室)2.华中科技大学煤燃烧国家重点实验室摘要:采用烟煤启动是W锅炉在“以煤代油,少油点火”方针下降低启动燃料消耗量的典型途径,然而相较于无烟煤燃料,烟煤中较高的挥发分含量对制粉系统的安全性将产生较大的影响,其显著依赖于燃料着火特性和可燃气体析出特性。鉴于此,选取了3种挥发分含量差异较大的烟煤(霍林河煤、平顶山煤、合山煤),在TG-FTIR上进行燃烧实验,探究挥发分含量对烟煤燃烧的气体产物生成特性的影响。结果显示霍林河煤的挥发分含量最高,析出挥发分的温度比较低,并伴随着显著的CO2、CO和CH4的生成。由此可见,挥发分含量能显著影响烟煤燃烧失重特性和产物生成特性,是制粉系统安全性评估的重要考量因素。关键词:制粉系统;烟煤启动;燃烧;挥发分;气体产物中图分类号:TK16文献标识码:AStudyofGasProductPrecipitationCharacteristicsofTypicalBituminousCoalCombustionCHENWen1,WANGZhi-jie1,HEHong-hao1,etal.1.StateGridHunanElectricPowerTestandResearchInstitute(HunanKeyLaboratoryofEfficient&CleanThermalPowerGenerationTechnology),2.StateKeyLaboratoryofCoalCombustion,HuazhongUniversityofScienceandTechnologyAbstract:Theuseofbituminouscoalstart-upisatypicalwaytoreducethestart-upfuelconsumptionofWboilersunderthepolicyof"coalinsteadofoilandlessoilignition".However,thehighervolatilecontentofbituminouscoalcomparedtoanthracitefuelwillhaveagreaterimpactonthesafetyofthepulverizingsystem,whichissignificantlydependentonthefuelignitioncharacteristicsandcombustiblegasprecipitationcharacteristics.Inviewofthis,threetypesofbituminouscoals,i.e.Huolinhecoal,PingdingshancoalandHeshancoal,withdifferentvolatilecontentswereselectedforcombustionexperimentsonTG-FTIRtoinvestigatetheeffectofvolatilecontentonthegasproductgenerationcharacteristicsofbituminouscoalcombustion.TheresultsshowedthatthehighestvolatilecontentofHuolinhecoalandthelowertemperatureofprecipitatedvolatilecon...