收稿日期:2022-07-16作者简介:王克(1989—),硕士/工程师;wangkenigneer@163.com600MW机组外置式蒸汽冷却器改造方案研究王克(上海市特种设备监督检验技术研究院)摘要为了降低第三段抽汽的蒸汽过热度,提高回热系统的热效率和机组运行的经济性,对某600MW燃煤发电机组提出两种设置外置式蒸汽冷却器的技术方案,并进行了经济和安全分析。结果表明:设置外置蒸汽冷却器,能够有效利用三抽蒸汽的过热度,改善回热系统效率,有效提高机组运行的可靠性和经济性,达到节能减排的综合效益。关键词外置式蒸汽冷却器回热系统安全经济文献标识码:A文章编号:1001-1617(2023)01-0056-05Researchonretrofitschemeofexternalsteamcoolerfor600MWunitWangKe(SpecialEquipmentSupervisionandInspectionofShanghaiInstituteofTechnology)AbstractInordertoreducethesteamsuperheatdegreeofthethird-stageextractionsteam,improvethethermalefficiencyoftheregenerativesystemandtheeconomyoftheunitoperation,twotechnicalsolutionsforsettingupanexternalsteamcoolerareproposedfora600MWcoal-firedgeneratingu⁃nit,andtheeconomicalandsecurityanalysis.Theresultsshowthataddinganexternalsteamcoolercaneffectivelyutilizethesuperheatdegreeofthethree-extractionsteam,improvetheefficiencyoftheheatrecoverysystem,effectivelyimprovethereliabilityandeconomyoftheunitoperation,andachievethecomprehensivebenefitsofenergysa...