超临界水氧化处理DDNP废水的动力学研究

DDNP,,(,030051):,O2,703823K24MPa1050s,DDNP,COD99%;COD,DDNP,,DDNPCOD;2,DDNP1.33,0.21;Ea30.7kJömol,A61.97:;;;;COD:TJ55;X703.1:A:100727812(2007)0520077204StudyonOxidationKineticsofDDNPinSupercriticalWaterMENGZhao2long,LIUYu2cun,CHAITao(DepartmentofChemistryandEnvironment,NorthUniversityofChina,Taiyuan030051,China)Abstract:SupercriticalwateroxidationofDDNPwastewaterwasperformedinabatchreactorwithoxygenastheoxidantatthetemperaturerangedfrom703to823K,thepressureof24MPaandresidencetimerangedfrom10sto50s.ThesimulatedwastewaterofDDNPinsupercriticalwateroxidationwasstudiedandtheCODremovalratereaches99%.Themacro2kineticswiththeCODremovalrateofwastewaterbysupercriticalwateroxidationwasestablished.TheresultsshowthatsupercriticalwateroxidationisefficientforthetreatmentofDDNPwastewater.Insupercriticalconditions,theCODremovalrateincreaseswiththeincreaseoftemperatureandresidencetimeofthereaction.Inthecaseofoxidantexcesstwice,thereactionofsupercriticalwateroxidationofDDNPis1.33orderinorganicsand0.21orderinoxygen.TheactivationenergyEais30.7kJömolandthefrequencyfactorA61.97s-1.Keywords:physicalchemistry;diazodinitrophenol;supercriticalwateroxidation;kinetics;CODremovalrate(DDNP),DDNP,,,,,,[1](SCWO)2080Modell,,[223],SCWO,,SCWODDNP,DDNPCOD11.1:,COD508mgöL:,,,m:2007206222;:2007207206:(1982-),,,77305200710ChineseJournalofExplosives&Propellants©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(374),(22MPa),()22.1[425]SCWO,,,,SCWO,SCWO,COD,,CODCOD(x):x=1-CC0(1)C=C0(1-x)(2):C0CCOD,mgöL;,COD:dCdt=kCaCb(3):t,s;kCOD;abO2x,(2)(3):dxdt=k(1-k)aCa-10C0(O2)b(4),O2,C(O2),C(O2)=C0(O2),:dxdt=k(1-k)aCa-10C0(O2)b(5)t=0,x=0,(5):(1-x)1-a-1=(a-1)kCa-10[C0(O2)]bt(a1)x=1-[1+(a-1)kCa-1C(O2)bt]11-a(Arrhenius):d(lnk)dT=EaRT2:Ea,Jmol-1;R,8.314Jmol-1K-1;T,K,:lnk=-EaRT+lnAlnk1öRT,EaA2.2SCWO,O2DDNP,DDNP,,,DDNP,,,,124MPaDDNP187305©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.öKC0ö(mgL-1)tösCö(mmolL-1)C(O2)ö(mmolL-1)xö%703508100.954712.53195.407703508200.954712.53197.712703508300.954712.53199.735703508400.954712.53199.835703508500.954712.53199.886743508100.835310.96497.547743508200.835310.96499.367743508300.835310.96499.845743508400.835310.96499.922743508500.835310.96499.936783508100.805510.57398.273783508200.805510.57399.645783508300.805510.57399.887783508400.805510.57399.953783508500.805510.57399.962823508100.73399.632998.758823508200.73399.632999.709823508300.73399.632999.899823508400.73399.632999.962823508500.73399.632999.9732,R20.9,,lnK1öRT[6],,32x-tDDNPSCWOFig.2SCWOkineticcurvesofDDNPexpressedbythexvs.trelation3lnk1000öRTFig.3Thelnkvs.1000öRTrelation3Ea30.7kJömolA61.973,lnkT,,,,,,,Lnk1öT2.31COD,[7]4,DDNP,2%97305,,:DDNP©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1),DDNP,823K24MPa50s,COD99.97%(2)DDNP703823K24MPaO22,1.33,0.21,Ea30.7kJömol,A61.97:[1].[M].:,1997:2672292.[2]ModellM.Processingmethodsfortheoxidationoforganicsinsupercriticalwater:US,4543190[P].1985.[3],,.[J].,2007,30(2):71274.ZHAOBao2guo,LIUYu2cun,CHANGShuang2jun.Studyon2,42dinitrotoluenewasterwaterdisposalbysupercriticalwateroxidation(SCWO)[J].ChineseJournalofExplosivesandPropellants,2007,30(2):71274.[4]JINFang2ming,KishitaA,MoriyaT,etal.KineticsofoxidationoffoodwasteswithH2O2insupercriticalwater[J].SupercriticalFluids,2001,19(3):2512262.[5],,,.[J].,2005,5(4):17218.GEHong2guang,ZHENBao2qin,CHENKai2xun,etal.Kineticsofoxidationofunsymmetricaldimethyh2ydrazineinsupercriticalwater[J].JournalofSafetyandEnvironment,2005,5(4):17218.[6],,,.[J].,2006,40(1):1152119.WANGLiang,WANGShu2zhong,ZHANGQin2ming,etal.Reactionmechanismandkineticsofoil2bearingsewagediposalbysupercriticalwateroxidation[J].JournalofXianJiaotongUniversity,2006,40(1):1152119.[7]VeriansyahB,KimJD,LeeJC,etal.OPAoxidationratesinsupercriticalwater[J].JournalofHazardousMaterials,2005,B124:1192124.(73);PEDMA,(4)PEDMA,,:[1]MannDC.Developmentofadeterredpropellantforalargecaliberweaponsystem[J].JournalofHazardousMaterials,1983(7):2592280.[2].[D].:,2000.WANGQiong2lin.Principleandtechnicalbaseofhigh2energydeterringpropellant[D].Nanjing:NanjingUniversityofScienceandTechnology,2000.[3],.[J].(),1996(1):28230.[4],.[J].,2007,30(1):9212.HEWei2dong,DONGCHAOChao2yang.Studyoflowtemperaturecoefficientmechanismofpolymerdeterredpropellants[J].ChineseJournalofExplosivesandPropellants,2007,30(1):9212.[5].[M].:.1988:31258.[6].[M].:,1995.08305©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(5):74-76.Therelationofenvironmenttemperatureandhumidityvs.theself2ignitiontimeofsinglebasepropellantwasstu