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(430079),,,;,-,,,,,pH,WetFlueGasDesulfurizationMechanismandEngineeringCountermeasuresXIELiLIUChengWULi-juan(SinosteelTianchengEnvironmentalProtectionScienceandTechnologyCo.,Ltd.Wuhan430079)AbstractFluegasdesulfurizationpaysattentiontoconvectionanddiffusion.Themainreferenceformasstransferequipmentdesignindesulfurizationprocessistheinter-phasemasstransferspeedrelationascertainedbydoublefilmtheorybasicconcept.Chemicalabsorptionmethodislargelyadoptedinfluegasdesulfurization.Howtoreasonablyimprovethefluegasflowrateintheabsorptioncolumnhelpstoen2hancemasstransferspeedandreduceresistance;thelocaloptimizeddesigncanstrengthentheperformanceofmasstransfer.Tolimestone/gypsumdesulfurization,theratioofliquidtogasdeterminestheconsumptionquality.Flyashinfluegasnotonlycrustsonthesurface,stop2pingthedissolvingoflimestone,butalsoaffectsthedustdischargeindex,reducingthequalityofgypsum.Ingraindiameterdetermination,firstthedesulfurizationrateshouldbeensured,toobtaintheoptimizedeconomicindex.PHvalueoftheliquidisthemainfactoraffectingdesulfurizationefficiency.Thecorrespondingengineeringcountermeasuresareputforwardthroughanalysisonseveralimportantparametersinoperation,runninganddesign.Keywordsfluegasdesulfurizationabsorptionmasstransferparametercountermeasure1,,,,SO2,,:CaCO3();MgO;Na2SO3;,90%,,,,(),95%;,1.05-1.10;,90%;,;;,,,;85%SO2,,,98%(2),,:,,,,,,,99%,(3),,,,(:2007-08-20)112008342February2008IndustrialSafetyandEnvironmentalProtectionSO2,22.12.1.1(FicK),:,,JA=-DABdcA/dxJB=-DBAdcB/dx,JAJBAB,kmol/(m2s);DABAB,m2/s;DBABA,m2/s;dcA/dxdcB/dxAB,(kmolm-3)/m2.1.2(500kPa),,,,,,,,,,2.1.3:(1),,,,(2),(3);,;,,,,2,,,,,,2.2(1),,,(2),,,,,,,,,,,22.3,,,,,-,,,,,2.4,,,,,,,,,,,,()(),,,,,33.1(),,,,212,,,,,,,,,,,,,,,,,,,,,,,,3.2,,-,,,,;,,;,,,,8-25L/m3,,,3.3;,,,,,,;,,100mg/m33.4,,,,SO2,;,,SO2,,,,,200-30090%3.5,;,pH30%,15%3.6pHpHpH,,SO2,pH6,SO2,,,,pH,,,,,SO2,pH4,SO2,,pH5.4-5.63.7Cl-HCl,HClCl-Cl-pH,SO2,,Cl-,,,,Cl-,Cl-24(1)(2),,,,(3)100mg/m3(4):,8-25L/m3,200-30090%(5)30%,15%(6)pH5.4-5.6(7),(:2006-10-11)31