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2TNT,,,(,730900):TNT,TNT,pH8,TNT,2TNT,,,HNBBMPDM,A2TNT:TNT,,TNT0.04,2.5%,,,;:;TNT;;:TQ564.3;TJ55:A:100727812(2006)0120020203TheProcessonTNTRefinerybySodiumSulfite-PotassiumHydrogenSulfiteMethodWEITian2yu,GUOHai2ying,RANJun2peng,ZHAORui2xian(GanSuYinGuangChemicalGroupCo.,LTD,BaiyinGansu730900,China)Abstract:InordertodecreasethesideproductfromtherefineryprocessofTNT,increasetheyieldofrefinedTNTandimprovethecrystallizingqualityofTNT,therefineryprocessofTNTisstudiedontheprincipleofin2habitingthesidereactiontodecreasetheTNTlosswithcontrollingthepHvalue(below8)oftherefinerysolu2tion,TNTisrefinedbyNa2SO32NaHSO3solution.TheacidityofthesystemiscontrolledbythebuffersolutionformedbyweakacidandsaltofweakacidtoinhabittheformationofsideproductsHNBBandMPDM,decreasethelossofA2TNT,andincreasetheyieldandqualityoftheproduct.ThetestresultsindicatethatincomparisonwithNa2SO3process,thepurityofTNTbyNaHSO3processishigher,themeltingpointenhances0.04,themeanyieldincreasesby2.5%,showingthattheTNTqualityimprovedremarkably.Itisofbenefittoeliminatetheshrinkagevoidandcrackandimprovethechargepropertieseffectively.Thecoloroftheproductislighter.Thedecreaseofwashtimemakestheamountofthewastewaterdecrease.Keywords:physicalchemistry;TNT;refinery;potassiumhydrogensulfitemethodTNT6%,TNT,()[1],TNT,,,,,,TNT[2],,A2TNT,2,2,4,4,6,62(HNBB)3222,4,4,6,62(MPDM),A2TNT,,HNBBMPDM,TNT,,,[326]:2005202220;:2005209202:(1956-),,,02ChineseJournalofExplosives&Propellants291200622()TNT,A2TNT11.1TNT()()1.2m(TNT)m(Na2SO3)=1006;m()m(TNT)=0.51;:25min;:7983m(TNT)m(Na2SO3)m(NaHSO3)=10061.5;m()m(TNT)=0.51;:30min(Na2SO3NaH2SO3,Na2SO3,);:8085(,)1.3280mL(12g,3g)TNT200g800mL(),100mL,,8085;2,30min(),,;(11),510min,110.1%5min,;1051152530min,22.1TNT1212,80.20;0.04,2.5%TNT,A2TNT1Table1ThetestresultsobtainedbyNaHSO3processW(TNT)ögö%ö1178.489.280.312178.489.980.403182.291.180.204180.290.180.225178.589.380.316179.089.580.367180.890.480.368180.290.180.389180.590.380.3710181.690.880.40180.190.180.332Table2ThetestresultsobtainedbyNa2SO3processW(TNT)ögö%ö1170.485.280.292176.288.180.243174.487.280.314176.188.180.265174.287.180.206177.288.680.287176.388.280.238176.088.080.309175.687.880.3410174.687.380.40175.187.680.292.2,A2TNT2,:SO2-3+H2OHSO3-+OH-(1)HSO-3+H2OH2SO3+OH-(2):kh1=kwöka1;kh2=kwöka2,kw,110-14;ka1;ka2298K,ka1=1.0210-7,ka2=1.5410-2kh1(kwöka1=9.810-8)mkh2(kwöka2=6.510-13),(1)(),(2)()12291,,,:2TNT,(1),,pH=pka1-lg(CHSO3-öCSO32-)[5],pH910,A2TNT8%10%,HNBBMPDM;pH8,A2TNT1%2%,,0.75%,1.00%,1.50%,1.75%(100gTNT6g),pH,pH,8.9,8.4,8.1,8.0,,,A2TNT,HNBBMPDM,,,[3],,,,pH,TNT,pH8,A2TNT,TNT3(1)TNT,,,(2)TNTpH,,,,(3),,:[1],.[]T..[M].:,1976.[2].()[M].:,1981.[3],.[M].:,1997.[4],,.TNT2RDX[J].,1998,21(2):49.[5],,.TNT[J].,1999,22(4):54256.[6],,,.TNT[J].,2002,25(1):69270.(19)3(1)2,62,42,6223,52212(LLM2105),,,(2):120%0.83200%110,LLM210536%,98%:[1]PagoriaPF,MitchellAR,SchmidtRD,etal.Syn2thesis,scale2upandexperimentaltestingofLLM2105[C]Proceedings21998InsensitiveMunitionsandEnergeticMaterialsTechnologySymposium.SanDiego:[s.n],1998.[2]PagoriaPF.SynthesisofLLM2105[J].Propellants,Explosives,Pyrotechnics,1995,20(1):38242.[3]PagoriaPF.Synthesis,scale2upandcharacterizationof2,62diamino23,52dinitropyrazine212oxide[J].Pro2pellants,Explosives,Pyrotechnics,1998,23(3):1562160.[4]PhilbinSP,MillarRW,CoomdesRG.Studiesofnovelnitro2substitutednitrogenheterocycles[C]ConferenceonInsensitiveMunitionsandEnergeticMaterialsTechnology.Enschede:MTNI,1999:3452351.[5].[M].:,1993:1132118.[6].[M].:,2002:4092429.22291