双塔双循环脱硫技术在执行污染物超低排放火电机组中的应用

202015－08－181985—。121．1001602．250013。－、、。SO26500mg/Nm399．5%～99．7%SO235mg/Nm3。X701A1008－021X201520－0147－04ApplicationofTwinTowersDoubleCirculationDesulfurizationTechnologyinThermalPowerUnitswiththeImplementationofUltra－lowPollutantEmissionXueFangming1ShaoYuan21．ChinaHuadianScienceAndTechnologyInstituteBeijing100160China2．HuadianguojiTechnologyServiceCenterJinan250013ChinaAbstractTosatisfytherequirementsofnationalenvironmentalpolicydesulfurizationsystemcapacitytransformationisemployedinmoreandmorethermalpowerunitstoachieveultra－lowemissionstandardsduetothehighsulfurcontentofcoalcombustion．Thedesulfurizationtechnologyapplicabletoultra－lowemissiontransformation－thetwin－toweranddual－cycletechnologywasinvestigatedinthisstudyanditsprinciplestransformationcontentandtechnicalcharacteristicswerebrieflyintroduced．Thistechnologyhasbeenimplementedinathermalpowerunitinshandongprovince．Iftheinletsulfurdioxideconcentrationis6500mg/Nm3thesulfurdioxideconcentrationattheoutletwillnotexceed35mg/Nm3andthedesulfurizationefficiencywillbestableat99．5%～99．7%．Keywordsthermalpowerunitthetwin－toweranddual－cycleultra－lowpollutantemissiondesulfurizationsystemcapacitytransformation、2014－2020《》202030SO2、、35、50、10mg/m3“”2013－2017《》、2017602015、。SO2GB13223－2011《》SO2200mg/m3。11．1。1．1．11122。97%Sar≤0．5%。1．1．212。SO2·741·SO2。、Sar1%～2%95%－96%3。、Sar2%～3%90%Sar3%。。1。11．2。。1、、。2、4。3GGHGGH1%～2%GGH。1．312203SO297%99%、4pHpHpH5。2330MWDB37/664－2013201391SO2≤200mg/Nm3201711SO2≤100mg/Nm3。20132017100mg/Nm320143SO235mg/Nm3。2．1－GGH6。SO24860mg/Nm3FGD≥95%SO2≤200mg/Nm3。、·841·SHANDONGCHEMICALINDUSTＲY20154420Sar2．5%。SO26500mg/Nm3SO235mg/Nm3。2．297%SO26500mg/Nm3SO2100mg/Nm3SO235mg/Nm3。、、、、。SO2600mg/Nm3SO235mg/Nm3。99．46%。、、、、、。32。32。、、。。。GGHGGH1%35mg/m3GGH。。。2．31。11#SO2/mg/m31#SO2/mg/m3/%2#SO2/mg/m3/%/%2648658291．033094．8599．543653760290．792795．5199．594647657391．152196．3499．685638559690．672695．6499．596643862590．292596．0099．617657958491．123194．6999．53190%99．5%～99．7%SO235mg/Nm3。33．1pHSO2。pH=4．57pHSO2pH5．2～5．4。SO2SO2pHSO2pH。pH5．8～6．2。3．250℃。3。SO2。8。。。3．3pH。SO2O2。SO29。、SO2SO2。42×330MW82651．05/kW．h。SO26500mg/Nm3SO2600mg/Nm3SO235mg/Nm399．462%。5500hSO2243．4kgSO21338．7t·941·1338700kg/0．95×1．2/kg=152．6。。、。5SO2。1．J．201133218－19．2．－－K．2014263196－198．3．J．2014351－54．4．J．2013228－31．5．pHJ．201235443－46．6．J．20144710134－136．7MillerMJ．ＲetrofitSO2andNOxcontroltechnologiesforcoalfiredpowerplantsJ．Environmentalprogress198653171－177．8．330MWJ．201235544－46．9．J．201336511－15．．J．20154420147－150．檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱檱139。。。2．1．4。。40%60%4。。2．22．2．1。100。2．2．2。。13。3．16、、、、4。。3．2。、。3．3、。40%50%。4。。1．M．2．2011．2．《》J．2014437173－174．3．J．20132869－11．4．J．2014427202－203．．J．20154420139150．·051·SHANDONGCHEMICALINDUSTＲY201544