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331Vol.33No.120081JOURNALOFCHINACOALSOCIETYJan.2008:0253-9993(2008)01-0047-04,,,,(,123000):,:3,.3.,.,.:;;:TD75317:A:2007-04-28::(50474010);(2006BAK03B05):(1956),,,,,.Tel:0418-3351708,E-mail:wangjr@lntu1edu1cnAnewclassifyingmethodofthespontaneouscombustiontendencyWANGJi2ren,DENGCun2bao,SHANYa2fei,HONGLin,LUWei2dong(CollegeofSafetyandEngineering,LiaoningTechnicalUniversity,Fuxin123000,China)Abstract:StudiedcoalspontaneouscombustioncharacteristicofShendongminingareaatdifferentlayersandwork2ingfacesbyusingthermalgravimetricanalyzerexperiment.Thestudyingresultsshowthat,theprocessofcoaloxida2tioncombustioncanbedividedintothreephases,whicharecalefactive2evaporated2alleviativephase,calefactive2weightincremental2oxidationphase,calefactive2combustion2alleviativephase.Thecorrespondingthreephasesactiva2tionenergyarerespectivelyevaporationactivationenergy,ignitionactivationenergyandcombustionactivationener2gy.Ignitionactivationenergyisfromweightincrementtoweightincrementbeoverandturnintoweightlossphaseactivationenergy,whichisanewmethodthatbasesonthecoalignitionactivationenergytodeterminatecoalsponta2neouscombustiondifficultlyoreasy.Thelessignitionactivationenergy,thecoalsampleiseasiertospontaneouscombustion,andthemoreignitionactivationenergy,thecoalsampleismoredifficulttospontaneouscombustion.Keywords:spontaneouscombustiontendency;thermalgravimetricanalysis;ignitionactivationenergy,[1]..,,.,,.1,,,.,.,©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:50,5/min,N2,O240,10mL/min,,1013mg,25600,TG-DSC.211,[2].,f(x).dx/dt=Ae-ERT(1-x)n,x=(m0-m)/m0=m/m100%,,x,%;A,s-1;E,kJ/mol;R,kJ/(molK);n;m0,g;m,g;m,g.TtT=T0+t,,,K/s.lndxdTf(x)=lnA-ERT.(1)(1)xT.,f(x),,1/T,EA.,(1)dxf(x)=Ae-ERTdt,,a=E/RT,dxf(x)=F(x)=AERP(a),lnF(x)-lnP(a)=lnAER,P(a)=e-aa+e-aada,e-aada=lna-a+a222!-a333!.1Fig11TheoxidationcombustionprocessofcoalsampleinBuliantamineunderTG-DSCproceduralcalefactivecondition,lnP(a)1/T.lnF(x)1/T.212(1)TG,3:.DSC,,2560,,400,1.,2560,84©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2),25108,108276,276.,,,,TG.,,,.,1Table1ThetemperatureatendpointofevaporatedphaseandignitionphaseofthecoalsamplesofShendongmining//2-2,3220112616254181-2,3130113314266102-2,1260712313262192-2,1230412612258162-2,0210414018256111-2,2120212515264121-2,1230111812267101-2,51104L12019275131-2,5110212114261135-2,4520211017275124-2,4420111416272125-2,451081191427717.(3),.1.(4),400,DSC1,,,.213,.2-23220125600,,.2-2322012(a),Y=-0100113-3894146745X,0197363,E=32138.2(b),Y=7160889-968313671X,0197388,E=80151.2(c),Y=8136271-14675110262X,0197465,E=122101.2ln(F(x))1/TFig12TheRelationshipofln(F(x))and1/TforcoalsampleevaporatedphaseinBuliantamine,,.,,,;,.,2.33,.394©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(kJmol-1)2510126183213801973632-2,322011261825418801510197388E=80151254186001012210101974652510133143118501979441-2,313011331426610761350198987E=76135266106001012413401974352510123132818501982092-2,126071231326219751560198453E=75156262196001012118101972132510126122811901986362-2,123041261225816761560198612E=76156258166001011819501970662510140182510901987292-2,021041401825611971890197227E=97189256116001012011501969172510125152619601986581-2,212021251526412771250197609E=77125264126001012112101968262510118122713701981881-2,123011181226710771570190886E=77157267106001011917001977712510120193013101980591-2,51104L1201927513671610197776E=67161275136001013414601977392510121142912901977341-2,511021211426113851760190044E=85176261136001012213301959042510110173214201987905-2,452021101727512621480197539E=62148275126001010511601976292510114163211401988604-2,442011141627212641050197133E=64105272126001011112001968472510119142814901991855-2,451081191427717641670197129E=6416727717600101071400197028:..,,.,.:[1],.[J].,2003,13(3):7678.[2].[M].:,2002.[3],,,.[R].:,2001.05©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.