HG-T 3981-2007 复极式离子膜电解

HGChinaChemicalIndustryStandardHG/T3981-2007BipolarMembraneCellsIssuedon:2007-09-22Enforcedon:2008-04-01Bipolarmembranecells1ScopeThisstandardcoversclassification,codes,specification,technicalrequirement,testmethodsandcheckingrulesofbipolarmembranecells.ThisstandardisapplicativeforbipolarmembranecellsofChlor-AlkaliIndustry.2ReferenceddocumentsThefollowingstandardscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthisStandard.Fordatedreferences,allupdateoramendment,exceptcorrigenda,isnotsuitableforthisstandard.Encourageallparties,whosigncontractbaseonthisstandard,todiscusswhethertheyusetheupdatedreferencedstandards.Forundatedreferences,thelatesteditionofthepublicationissuitableforthisstandard.GB191Packaging--PictorialmarkingsforhandlingofgoodsGB/T1220StainlesssteelbarsGB/T2965TitaniumandtitaniumalloybarsGB/T3280ColdrolledstainlesssteelsheetsandplantsGB/T3620.1DesignationandcompositionoftitaniumandtitaniumalloysGB/T3621TitaniumandtitaniumalloyplateandsheetGB/T3623TitaniumandtitaniumalloywireGB/T5231WroughtcopperandcopperalloyschemicalcompositionlimitsandformsofwroughtproductsGB/T5235Wroughtnickelandnickelalloys—ChemicalcompositionandformsofwroughtproductsGB/T9460WeldingwireandrodsofcopperandcopperalloysGB/T11199MembraneprocesscausticsodaGB/T15620NickelandnickelalloyweldingwiresJB/T4730.5NondestructivetestingofpressureequipmentsPart5:PenetranttestingHG20592Flange,WasherandFastenermadefromsteeltubeYB/T5092Stainlesssteelwiresforwelding3Classification,codesandparameters3.1ClassificationBipolarIEMelectrolyzercanbeclassifiedasthreetypesbymediumcirculation,electrodegap,andcurrentdensity:LowCurrentDensity&ForcedCirculationElectrolyzerHighCurrentDensityNaturalCirculationElectrolyzerHighCurrentDensity&ZeroGapwithNaturalCirculationElectrolyzer.3.2CodesB—EffectiveareaofUnitcell(M2)Currentdensity(H--highCD;noletteriflowCD)ElectrodeGap(Z--zerogap;noletterifgapexist)Theconnectingmethodofelectrode,“B”meansbipolarMediacirculation(N--NaturalCirculation;F--ForcedCirculation)Codeexample:NBZH—2.7Indicatesnaturalcirculation,bipolar,zerogap,highcurrentdensity,andtheeffectiveareaofunitcellis2.7M23.3SpecificationparametersTheparametersofbipolarmembranecellsareshowninTable1.Table1–TheparametersofbipolarmembranecellsTypeAnnualproductioncapabilityofNaOH(100%basis,kT)Amountofunitcell(pair)Currentdensity(kA/M2)EffectiveareaofUnitcell(M2)FB-2.710.0983.3302.712.51163.51813.313015.0148NBH-2.712.5904.50013.39615.010816.712420.014622.516425.0180NBZH-2.712.5904.50013.39615.010816.712420.014622.516425.01804Technicalspecifications4.1IndexofperformanceTheindexofperformanceforbipolarmembranecellsisshowninTable2.Table2-TheindexofperformanceforbipolarmembranecellsTypeAnnualproductioncapabilityofNaOH(100%basis,kT)DCconsump-tion(KW.H/T)ConcentrationofNaOH(%,wt)Currentdensity(kA/M2)H2purity(%,v/v)Chlorinepurity(%,v/v)Oxygeninchlorine(%,v/v)FB-2.710.0≤216032±0.53.330≥99.0≥99.0≤0.812.53.51813.315.0NBH-2.712.5≤21354.50013.315.016.720.022.525.0NBZH-2.712.5≤21004.50013.315.016.720.022.525.0Remark:TheDCconsumptionisdifferenceifusedifferentcompany’smembrane.Theidiographicconsumptionvaluecanbeagreedinthecontract.4.2Materials4.2.1Thematerialsoftitanium,nickel,SUSandcopperusedinbipolarmembranecellsshouldmeetthespecificationthereinafter:——ThechemicalcomponentsofTA1orTA2shouldmeetthespecificationofGB/T3620.1;ThemechanicalperformanceshouldmeetthespecificationofGB/T2965andGB/T3621.——ThechemicalcomponentsofN6nickelshouldmeetthespecificationofGB/T5235.——Thechemicalcomponentsandmechanicalperformanceof0Cr25Ni20,0Cr18Ni9and00Cr17Ni14Mo2shouldmeetthespecificationofGB/T3280andGB/T1220.——ThechemicalcomponentsofT2coppershouldmeetthespecificationofGB/T5231.4.2.2Theweldingmaterialsusedforbipolarmembranecellsshouldmeetthespecificationthereinafter:——ThetitaniumweldingwireofTA1orTA2shouldmeetthespecificationofGB/T3623.——ThenickelweldingwireshouldmeetthespecificationofGB/T15620.——TheSUSweldingwireofH0Cr21Ni10shouldmeetthespecificationofYB/T5092.——ThecopperweldingwireofHSCushouldmeetthespecificationofGB/T9460.4.3UnitCell4.3.1Thelengthshouldbe(2354±0.5)mmandthewidthshouldbe(1154±0.5)mmaftertheanodeandcathodemeshisbended.4.3.2Weldingscarshouldnotappearafteranodemesh/cathodemeshisweldonthesupportbeambyspotwelding;anode/cathodemeshdefectwhichcanstabmembraneisnotallowed,suchasburrandthreadbroken.Theflatnesstoleranceshouldnotexcess1.0mm.4.3.3Coatingpeelingoffandscratchshouldnotappearonthesurfaceofanodeandcathodemeshaftercoating.4.3.4Theweldcolorofnickelandtitaniumshouldbesilverywhiteorgolden;bluecoloratsmallareaisallowed.Cannothavedefectlikecrack,airhole,arcpit,dregscontaining,etc;cannothavemeltingdregsandsplashafterwelding.4.3.5Thepaintforaccessorieswhichneedpaintshouldmeettherequirementofdrawing.Andthepaintshouldbeuniform,nopeeling,wrinkle,orpeeling.Paintsurfaceshouldbeplaneandbrightness.4.3.6Forallthreetypesofunitcell,theanode/cathodeelectrodeheighttolerancesare+0.3/-0.7mm.Notmorethan5%oftotalamountelementsareallowedtohaveheighttolerance+0.5/-1.0mm.4.3.7Thelengtht