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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:20080903:(1974),,,,:CN311508(2009)050014041,1,2,3(1.,071003;2.,100054;3.,036000):;;;:,,,,,:TK229.6:A0,,,[1-2],,,,,,,,,,,1[3-8]:1.11973,tld=tsl+(Sar,zs)(1/3)1.05(fhAar,zs)(1),=1.21.25,=121;=1.41.5,=129Sar,zsAar,zs,4190kJ/kg(1000kcal/kg),,fh0.95,121,,1.2ti,p=20lgVSO3+a(2):td.p;VSO3(%);a5%,a=184;10%,a=194;15%,a=2011.3tu=186+21lgH2O+26lgSO3(3):H2OSO3,%1.21.3,1.4SO3©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,1.5,0.25,tu=120+17(Szs-0.25)(4)2SO2;SO22%SO3;0.098MPa11Car/%Har/%Oarar/%Nar/%Sar/%Aar/%Mar/%Var/%Qar.net/kJkg-161.823.87.750.970.8818.786.028.982338033.12,142,89.3,59.55%2/142Tld=20lgVSO3+a129.31973tld=tsl+(Sar,zs)(1/3)1.05(fhAar,zs)95.61.3tld=186+20lgH2O+26lgSO389.33.2133,1312121/6867696768666967686768676868686768646967312122/707068656966686770676768706668687067686870,657.69%44.1SO3/SO2,(Fe2O3)SO3SO3,SO3,SO3:,,SO2SO3,SO3SO3SO20.5%5%4SO3/SO2123456SO3/SO20.5%1%2%3%4%5%/117.3123.3129.3132.8135.3137.31/61215.51820,SO3/SO251©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),19735%73161.494.224.631.28395.4834.531.27595.5744.51.27395.654.31.25795.784.366123456/%2.34.75.878.19.37375.887.491.595.697.7100.3111.615.719.821.924.56,,197324.54.47,,,0.70.95,9895.6,,,FeS,,71234fh0.70.80.850.95/989796.595.642.41.40.94.5,:(1),SO3,,,,,SO3,(2),(3),,81A3A,11066938/A123/11093665,SO2SO31973SO2SO2,1973,tld=tsl+(KSar,zs)(1/3)1.05(fhAar,zs)(5):KSO2,SO2SO299K0.70.750.80.850.90.9573/95.673/89.390.591.692.793.794.726.35.142.91.90.961©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:9,SO2K0.85,7392.7,8930.395.68932.6,6,,(1),SO2SO3(2),(3),(4),(5)1973:[1].[J].,1997(6).[2].[J].,1998(1).[3](1973)[S].[4],.[M].:,2004.[5],.()[M].:,2003.[6](1998)[S].[7].[M].:,2000.[8].[M].:,2002.TheCalculationoftheGasAcidDew2pointinUtilityBoilerLIJun1,YANWei2ping1,GAOBao2tong2,LIChun3(1.KeyLaboratoryofConditionMonitoringandControlforPowerPlantEquipmentofMinistryofEducation,NorthChinaElectricPowerUniversity,Baoding071003,China;2.NorthChinaElectricPowerInstitute,Beijing100054,China;3.XinZhouPowerSupplyBureau,Xinzhou036000,China)Keywords:utilityboiler;fluegas;aciddew2point;calculationAbstract:Aprecisecalculationofaciddew2pointisveryimportantfordesignofutilityboilers,fluegassulfurremovalandtailheatingsurfacetransformation.Existingdocumentswhichdiscussedthecalculationofthedewpointarenottoomuch,thedeviationbetweentheresultofcalculationandsurveyingvaluearerelativelygreat.Inthispaper,basedonapowerplantburningcoalandtheactualoperatingconditions,itwasfoundthatthemainaffectfactorsofaciddew2pointcalculationbycontrastthemeasureddataandcalculationresults,andgivetherevisionformula,Ithasthecertainprojectapplicationvalue.(13)Keywords:boiler;aciddew2pointtemperatureofgas;thermalcalculation;calculationmethodAbstract:InChineseboilerindustry,thecalculationaboutboilerproperandboileraccessoryincludesthefollowingparts:onepartisconstitutedbyourcountryafterreformandopening2up,anotherisfromtheformerUSSRs(suchasthethermalcalculationofboilerunit),thelastoneisintroducedfromothercountriestechnologyandthispartislittlementionedindetail.Duringthework,itisfoundthattheformulaofaciddew2pointtemperatureofgasisnotexactinanumberofbooksandarticlesinmorethantwentyyears.Thispaperwillanalyzethispartandofferserviceforusers.71