氚废气的回收技术研究

:2002209218;:2003201218:(1968),,,,,:025329950(2003)0320141205,,,,,,621900::(H2),,400,,HopcaliteH2100%;500,HopcaliteHT99%,,3(1.95.5)10-6d-1g-1,4A,5A;3(HTO),(HT)1.2%;,2%:;;;:O6141712:A(ICF),3He,,[1],,;,ICF,,[2,3],1111H21.1.1:Hopcalite,0.130.15mm,:,3mm,0.130.15mmHopcalite0.488g,400:5@,:100,:100,:N2,:10.0mL/min,:15.0mL/min1.1.21,,,,,,112HopcaliteHT1.2.1:,18mm,Hopcalite10.0g,65mm,500253Vol.25No.320038JournalofNuclearandRadiochemistryAug.20031H2Fig.1MeasurementloopofH2oxidationefficiency1,3(Throttlingpipe),2(Bumper),4(Oxidationbed),5(Molecularformula),6HP5890(Chromatogramapparatus),7(Filterapparatus),8(Samplingvalve),9(Flowmeter),10(Chromatogramcarrier),11(Thermalconductivitydetector),12(Recorder)1.2.22[4](1mg)R(22),10K/min,2%H2Ar50mL/minR(HTOHT),34,(HTO),IC1(25)(S1),,HTHTO,:CuO+HT(g)=Cu+HTO(g)(1)2HTFig.2MeasurementloopofHToxidationefficiency(Carrier),2(Heatpipeoftritiumample),37(Glycolsparger),48(Molecularformula),59,(Ioniza2tionchamber,),6(Oxidationbed)HTO,IC2(29)IC2S2HT,:=(1-S2KS1)100%(2),S1S2IC1IC2;K,49.6113,,,1.3.13300(50mL/min)90min,,31241253Fig.3Deviceofpreparatingmolecularseivescontainingtritium1(Carrier),2(Flowmeter),3(Evaporator),4(Molecularformula),5(Glycolsparger)1Table1Parametersofmolecularseivescontainingtritium(Type)msam/gA(HTO)add/GBq4A,Na2A8.123.75A,Ca2A8.324.010X,Ca2X7.924.0,24.0GBq/mL1.0mL,,120140,2%H2Ar(50mL/min),,0.2mL,,,,,,1.3.24(2),,,(5)HTO,(8),HTHTO,(9)(11)(5)(9)HTOHT,,,[3],(2)(3),[5,6]:4Fig.4Measurementsystemoftritiumreleasefrommolecularseives1(Carrier),2(Bellcanopy),3(Metalvalve),4(Molecularformulasample),59(Glycolsparger),610(Molecularformulabed),7(Volumebottle),8(Oxidationbed),11(Ionizationchamber)3412:2211HopcaliteH2HopcaliteH255,,,Hopcalite100%,,0.103g,:CuO+H2(g)=Cu+H2O(g)(3),CuO5H2Fig.5ChangeofH2oxidationefficiencywiththechangeofgasvolume212HopcaliteHTHopcaliteHT22,,HopcaliteHT(99.40.4)%2HopcaliteHTTable2TritiumoxidationefficiencyofHopcaliteNo.S1S2/%1232.3125.098.922841.4100.499.763732.4155.699.57213,33:(1)3(1.95.5)10-6d-1g-14A,5A(2)3(HTO),(HT)1.2%(3)2%3Table3Resultoftritiumreleasecoefficientofmolecularseives4A,Na2A5A,Ca2A10X,Ca2XAr+2%H2ArAr+2%H2ArAr+2%H2Ar14d32d48d64.8d14.8d32.8d48.9d62.0d14.9d33.1d49.9d62.9dA(HTO)/MBq7.519.495.735.0514.519.611.613.410.112.16.696.98A(HT)/kBq51.287.869.557.196.812310794.850.860.948.753.2A(HTO+HT)/MBq7.569.585.805.1114.619.811.713.510.212.16.747.03106E/(d-1g-1)2.812.771.891.944.985.523.635.163.623.512.122.853Hopcalite400100%,500HT99%3(1.95.5)10-6d-1g-14A,5A;3(HTO),(HT)1.2%:[1]RHINHAMMERTB,LAMBERGERPH.SelectedTechniquesfortheControlandHandlingofTritium44125[J].TransAmerNuclSoc,1975,(22):740.[2],,,.[M].:,1998.5660.[3]MASAKATSUSaeki,TAKAKUNIHirabayashi.SorptionMechanismsofTritiumontheSurfaceofBososilicateGlass[J].RadiochiucicaActa,1984,(35):233238.[4]CAOXH,SHENWD,WANJP.In2situTritiumReleaseExperimentFromSolidBreeder2LiAlO2inSWINPC[J].FusionTechnol,1995,(28):550.[5],,,.3He[J].,1996,30(1):5561.[6],,,.3He[J].,1996,19(9):542547.INVESTIGATIONONCLEANUPOFGASCONTAININGTRITIUMLONGXing2gui,YANGBen2fu,CAOXiao2hua,LUOShun2zhong,PENGShu2ming,CHENGGui2junInstituteofNuclearPhysicsandChemistry,ChinaAcademyofEngineeringPhysics,P.O.Box919(220),Mianyang621900,ChinaAbstract:Tritiuminoff2gasisoxidatedtotritiumwaterbycatalyzerathightemperatureinadrycarrierArgongaswithalittlehydrogen,andisadsorbedbydistilledwaterorsuitabledryer.Oxidationrateofcat2alyzerforH2andHTisnear100%at400andmorethat99%at500,respeclively.Tritiumreleaseratefromthreetypesmolecularseiveswhichadsorbedtritiumwaterisfoundtobeabout(1.95.5)10-6d-1g-1,thesmallestoneisfor4A2Na2typemolecularseiveandthelargestoneisfor5A2Ca2typemolecularseive.ThechemicalstateofreleasedtritiumfromthreetypesmolecularseivesismainlyintheformofHTO,andcontentofHTislessthan1.2%.Storageatmosphereoftritidemolecularseviesgreatlyaffectsthetritiumrelease.Releaserateoftritiuminpureargongasislessthanthatinargongaswith2%hydrogen.Keywords:HT;oxidate;molecularseive;HTO5412: