干法半干法钙基烟气脱硫技术研究进展及趋势赵旭东

、()赵旭东1,高继慧2,吴少华2,秦裕琨2(1.,　100084;2.,　150001)　:、,,,;CaO,SO2,。,。:;;;:X701.3　　　:A　　　:1005-9954(2003)04-0064-04　　、、。(WFGD),,、、、。、,。,,、,。1　(DFGD)SO2,SO2。,,、。SO2、,。20%—30%。,LIFAC、LIMB、NIDCoolSide()。、、,[1]。LIFACLIMB[2]。LIFAC,,,CaOCa(OH)2,,,,[3—4]。、、,、、、。(2×125MW)(123MW)[5],85%,,。LIFAC,50%SO2,,。CoolSide,,,,75%。,[Ca(OH)2CaO],,。ALSTOMNID、,,,SO2,,　:(1970—),,,、、,,:[phone](O),13520501182,E-mail:[e-mail]。31420038　　　CHEMICALENGINEERING(CHINA)Vol.31No.4Aug.200385%。NID,70MW[6]。2　(SDFGD)SO2,,。,/-,、,25%,、。1.2,80%。(SDA)NIRO2070。,,SO2,,,。,SDA[7]。SDA,,,,70%—90%。、、、、,15,5000MW。4SDA,。SDA:①1r/min,,,、,,;②,20%—50%;③,8%—12%,1%;④,。2080,LurgiCFBFGD。,、、,、,;,,,30min,。:,,1.2—1.5,90%[8]。CFBFGD,,,。,,。CFBFGD、、、。,WulffLur-gi,(RCFBFGD);FLSCFBFGD(GSA)。RCFBFGD,,,,,,,、。:30%—50%,15%—30%[9]。220t/hRCFBFGD,1.25,97%。ABBWulffRCFBFGD。、、、CFBFGD,CFBFGD[10—11]。,,20000m3/h,80%,20025,150t/h,200310;,65t/h,,126200m3/h,1.5,90%,,75t/h,,。1.3,90%[12]。、、、,、·65·　赵旭东等　、(),。GSA,SO2,SO2,(),。:①GSA,,,;②GSA;③SO2、;④。,GSA,。10MW,1.2—1.4,90%,。FLS,100MW,GSA。3　、FGD()FGD。3.1　、、。CFBFGD,,30min;GSA,,,。。,,,,[13]。3.2　,,,SO2Ca(OH)2,。,,2.0,40—80℃,Ca(OH)215%,Ca(OH)240%;CaO,,,SO2。,,,[14]。LIFAC,,50%;CFBFGD,,。:SO2,,,。,,,。3.3　,、FGD,。,,、,、,,SO2,;、,,,。3.4　,,、。,、、,、、。65t/h;75t/h。,。,,。4　、FGDFGD,,,,,·66·　　2003314,。,,。FGD,。,、、、。、,。FGD,,,:①FGD,,;,(AST),,。,、。②,(、),,、、,。,、,。,,[15]。③。,,。,,,;,,。,,,。,,,,、,,。④,()FGD,、。:[1]　,,,.[A].[C].:,2001.490—495.[2]　DrehmelDC.DevelopmentinLIMBtechnology[A].15thEnergyTechnologyConference&Exposition[C].WashingdonDC,1988.[3]　PavidGS,etal.Optionsareincreasingforreducinge-missionofSO2andNOX[J].PowerEngineering,1988,92(12):30—34.[4]　BallME,SmithDW,etal.LIFAC———SO2[A]..[C].:,1998.1—8.[5]　.LIFAC[A].2000[C].:,2000.232—239.[6]　,.NID[A].2001[C].:,2001.5—8.[7]　.[M].:,2000.189—200.[8]　FanBaoguo,etal.Dominantinfluenceparametersonthefluegasdesulfurizationefficiencyincirculatingflu-idizedbed[A].Proceedingof4thInternationalSympo-siumonCoalCombustion[C].Beijing,1999.18—21.[9]　,.[J].,1998,(2):57—59.[10]　,,,.[P].:99246582.6.[11]　,,,.[J].,2000,6(4):351—355.[12]　,,,.[J].,2002,23(2):36—39.[13]　HiroakiTsuchiai,TomhiroIshizuka,etal.Studyoffluegasdesulfurizationabsorbentpreparedfromcoalflyash[J].IndEngChemRes,1996,35:2322—2326.[14]　RuhlandF,KingdR,etal.Thekineticsoftheab-sorptionofsulfurdioxideincalciumhydroxidesuspen-sion[J].ChemEngSci,1991,46(4):939—947.[15]　,,.[J].,1997,(4):15—17.·67·　赵旭东等　、()alyzed,andtheoptimizedoperatingparameterwasgivenaswell.Keywords:spraydryabsorption;fluegasdesulfurization;limestoneDevelopmentofDryandSemi-Dry(CalciumBase)FlueGasDesulfurizationTechnologyZHAOXu-dong1,GAOJi-hui2,WUShao-hua2,QINYu-kun2(1.DepartmentofThermalEnergyEngineering,TsinghuaUniversity,Beijing100084,China;2.DepartmentofEnergyScienceandEngineering,HarbinInstituteofTechnology,Harbin150001,HeilongjiangProvince,China)Abstract:Theup-to-datedevelopmentofthedryandsemi-dry(calciumbase)fluegasdesulfurizationtechnolo-gyanditspresentcommercialapplicationstatuswerediscussed.Itinvolvedtherecyclinguseofthedesulfurizedproductandtheflyashineitherdryorsemi-drytechnologythroughtheanalysisofthetechnology.Firstly,thedryCaOshouldbereactedwithwatertoproducethesolution,lateritcouldbefullyreactedwithSO2inthefluegas.Theimportanceofwaterintheprocessofthedesulfurizationwasanalyzed.Theproblemthatneededfar-therattentionintheindustrializationandthekeyproblemintheresearchwerediscussedcombinedwithpracticeexperienceintheproject.Keywords:drymethod;semi-drymethod;calciumbase;fluegasdesulfurizationEquilibriumSolubilitiesandPropertiesoftheQuarternarySystemK2B4O7-Na2B4O7-Li2B4O7-H2Oat288KSANGShi-hua1,TANGMing-lin1,YINHui-an1,ZHANGYun-xiang2(1.DepartmentofAppliedChemistry,ChengduUniversityofTechnology,Chengdu610059,SichuanProvince,China;2.InstituteofChemicalEngineering,SichuanUniversity,Chengdu610064,SichuanProvince,China)Abstract:Thesolubilitiesandproperties(density,electricalconductivityandpH)werestudiedinthequar-ternarysystemK2B4O7-Na2B4O7-Li2B4O7-H2Oat288Kbyisothermalequilibriummethod.Basedonthesolubil-itydata,thephasediagramofthesystemwasplotted,whichconsistsofoneinvariantpointE.Threeunivari-antcurvesE1-E,E2-EandE3-E,andthreecrystallizationfieldsNa2B4O7·10H2O,K2B4O7·4H2OandLi2B4O7·3H2O.K2B4O7havesalt-ineffectonNa2B4O7.Theresultsofpropertiesinthesolutionwerediscussedbriefly.Keywords:salt-watersystem;phaseequilibrium;borate·6·　　　　　　　　　　　　CHEMICAL　ENGINEERING(CHINA)　　　　　　　Vol.31,No.4,2003