石灰石石膏湿法烟气脱硫工艺液相系统分析与计算

2007(12):!(2006BAA01B04);(NCET060513):(1977),,,,Email:[e-mail]钟毅,高翔,林永明,骆仲泱,岑可法浙江大学,浙江杭州310027[]石灰石石膏湿法烟气脱硫(WFGD)工艺是我国电站锅炉烟气脱硫的最主要技术,其液相系统的设计对于整个工艺的设计具有非常重要的意义结合系统能量平衡与液相平衡对石灰石石膏喷淋塔WFGD液相系统进行了分析,并给出了计算方法采用该方法对4个实际WFGD项目进行了计算,计算结果与国外WFGD技术提供商给出的计算结果比较吻合所提出的计算方法可以用于石灰石石膏喷淋塔WFGD项目的设计与运行优化[]电站锅炉;湿法烟气脱硫(WFGD);石灰石石膏法;液相系统;喷啉塔[]X701[]A[]10023364(2007)12001103(WFGD),,WFGD1,,,1,,,,,,,1WFGD(1)(2):hw=101.07+7.483∀(tw-297.25)(1):hw,kJ/kg;tw,K(1)(290.15~303.15)Khs=2583.72+6.577∀(ts-318.95)(2)2007(12):hs,kJ/kg;ts,K(2)(306.15~328.15)K(3):h=hs-hw(3)h,kJ/kgWFGD,SO2CaCO3CaSO3,,:,[1,2],,25#1,,,,,[1,3,4]:SO2+CaCO3+12O2+2H2O=CaSO4.2H2O+CO2[5],(N2CO2O2H2O(g))(4)[5]:cp=a+bT+cT2+dT3(4):cp,J/(kgk);T,K;abcd,[5]WFGD,,(5)(6)[6]:V0k=0.0089(C+0.375S)+0.265H-0.0333O(5):V0k,m3/kg;C,%;S,%;,H,%;O,%V=Vy+∀L∀V0k∀Bj(6):V,m3/h;Vy,m3/h;,L,m;Bj,kg/h(7):Mzf∀h=V∀cp1(T1-T2)+Vyk∀cp2(T3-T2)(7):Mzf,kg/h;cp1,J/(kgK);T1,K;T2,K;T3,K;Vyk,m3/h;cp2,J/(kgK)(GGH),,GGH,,,Magnus[7]:Inp=In6.112+17.62t/(243.12+t)(8):p,Pa;t,#,,,2:(1);(2);(3);(4);(5)WFGD,,,,20000mg/L[8,9],,,,(3)2007(12)!2324WFGD,(1)1AB300MW,CD600MW1t/hABCD31.1531.2533.3533.7866.5266.1650.2948.867.177.114.153.6929.0628.349.199.071.101.083.333.346.926.652.832.9139.4239.1740.7440.64102.50101.1562.3160.611,;B,;D,,WFGD,3,,4,,WFGD[][1],.[M].:,1987.[2].[M].:,2002.[3].[M].:,1992.[4],,.[M].:,1998.[5]RichardM.Felder,RonaldW.Rousseau.Elementaryprinciplesofchemicalprocesses[M].NewYork:JohnWiley&Sons,Inc,1978.[6].[M].:,1985.[7].[M].:,1997.[8]D.S.Henzel,B.A.Laseke,E.O.Smith,etal.Handbookforfluegasdesulfurizationscrubbingwithlimestome[M].NewJersy:NoyesDataCorporation,1982.[9],,,.[M].:,2004.(22)∀2007(12),FSSS,[][1],,.[J].,2002,17(98):166168.[2].[M].:,2005.[3],,.[J].,2001,16(1):16.[4],,.[J].,1996,16(6):6872.[5],,.CCD[J].,2000,20(1):7072.[6].[D].,2004.[7]JorgeS.Marques,PedroM.Jorge.Visualinspectionofathermalelectricplant[J].Signalprocessing2000,80:15771589.[8]Y.Yan,G..Lu,M.colechin.Monitoringandcharacterizationofpulverizedcoalflamesusingdigitalimagingtechniques[J].Fuel,2002,81:647656.[9],,.[J].,2004,20(2).[10].[D].,2002.[11],,,.[J].,2003,23(3).[12].[D].,2001.DIAGNOSISOFCOMBUSTIONSTABILITYINFURNACEBYUSINGFLAMEIMAGEMETHODHUANGBenyuan,LUOZhixue,ZHOUHuaichunMiddleChinaUniversityofScience&Technology,Wuhan430074,HubeiProvince,PRCAbstract:Throughanalysisofradiantenergysignalpickedupfromflameimageinthefurnaceofpulverizedcoalboiler,thecharacteristicvaluereflectingimagesinthewholefurnacecanbecomprehensivelyobtainedfromagreatnumberofflameimages.Basedonthese,adjustingdegreeofcombustioninthefurnacecanbeaccuratelygivenout,thereby,makesthecombustiontobeeasilysupervisedandcontrolled.Theimagediagnosismethodhasobviouseffectivenessforanalysingthecombustionsituationinboiler,theoutfirealarm,andthefurnacesecuritysupervisingsystem.Keywords:thermalpowerunit;combustionstability,radiantenergysignal;flameimage(13)ANALYSISANDCALCULATIONOFTHELIQUIDPHASESYSTEMINLIMESTONE/GYPSUMWETFLUEGASDESULFURATIONPROCESSZHONGYi,GAOXiang,LINYongming,LUOZhongyang,CENKefaZhejiangUniversity,Hangzhou310027,ZhejiangProvince,PRCAbstract:Thelimestone/gypsumwetfluegasdesulfuration(WFGD)processisthemostessentialprocessforfluegasdesulfurationofboilersinthermalpowerplantsofourcountry.Thedesignofliquidphasesystemhasveryimportantsigificancetothedesignofentirelimestone/gypsumWFGDsystem.Combinedenergybalancewithliquidphasebalanceinthesystem,theliquidphasesysteminlimestone/gypsumsprayingtowerWFGDsystemhasbeenanalysed,andcalculationmethodbeinggiven.FourpracticalWFGDprojectshavebeencalculatedbyusingthesaidmethod,thecalculatedresultsbeingingoodagreementwiththatprovidedbyforeignWFGDtechnologysuppliers.Thesaidcalculationmethodcanbeusedinthedesignandperformanceoptimizationofthelimestone/gypsumsprayingtowerWFGDprojects.Keywords:utilityboiler;WFGD;limestone/gypsummethod;liquidphasesystem;sprayingtower