煤等离子体热解制乙炔工艺的工程探讨

1112(1.,030024;2.,030024):222,,;7;,,:;;;;;:TQ03913;TQ221124;TQ53619;TQ530.2:ADiscussiononacetyleneproductionbycoalplasmapyrolysisTIANYuan2yu1,HUANGWei1,BAOWei2ren1,XIEKe2chang2(1.StateKeyLabofC1ChemistryandTechnology,TaiyuanUniversityofTechnology,Taiyuan030024,China;2.ShanxiKeyLabofCoalScienceandTechnology,TaiyuanUniversityofTechnology,Taiyuan030024,China)Abstract:Theprocessforacetyleneproductionbycoalplasmapyrolysisisanewtechnologywithpromisingprospectcomparedwiththetraditionalcoal2char2calciumcarbide2acetyleneprocess.Itscommercializationwillpromotetheoptimalutilizationofcoal.Effectsofthemixingofcoalandplasmajet,thereactiontimeandthequenchingfashiononacetyleneyieldwereanalyzed.Effectsof7factorsonacetyleneenergyconsumptionwerediscussed.Theyincludedthethermalefficiencyofplasmagenerator,theinitialtemperatureofworkgas,thethermallossofreactor,thewasteheatrecoveryofreactionproducts,theseparationofresidue,theseparationandrefiningofreactinggasesandtherecyclingenergylossofworkgas.Somefactorsaffectinglong2cycleproductionwerealsodiscussed.Theconceptofproducingacetylenebycoalplasmaindirectpyrolysiswasraised.Thenewprocesscanovercomesomedefectsincoalplasmadirectpyrolysisandremovelimitationsonfeedstockimposedbythecoaltype.Keywords:plasma;coalpyrolysis;acetylene;yield;energyconsumption;long2cycleproduction:2001209225:(19935010)(G1999022106):,,1969,,,;,,1946,,,,,,[1],,,,,,,7’’’Feb.’’’’’ModernChemicalIndustry©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[25]111,,,,,,,19803,120,45,10mm,6mm,,,[6];NicholsonLittlewood[4],,,74%,,,,,;,,,,,,,,,,80%50m[3]Beiers[7],,,,,112(),,,,,Bittner[8],180mm,4ms,,[9],113,,,,300[10],,,8’’’©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[3],,,[11],10%,2,,,60%80%,,,,,,10%30%,,,,,,,,,,,,,50%80%,,,,,150300,;,,,,3,,1000h,,,2090,AkadWissPhyschem[12],12min,,,VebChemLeipzig,[12],,,,,,9’’’:©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1],.[J].,2000(1):2632[2]BondRL,GalbraithIF,LanderWR,etal.Productionofacetylenefromcoal,usingaplasmajet[J].Nature,1969,200:13131314[3]BondRL,LanderWR,McConnellGIT.Reactionofcoalinaplasmajet[J].Fuel,1966,45:381395[4]NichosonR,LittlewoodK.Plasmapyrolysisofcoal[J].Nature,1972,236:397400[5]ChakravaptySC,DuttaDP,LahitiA.Reactionofcoalsunderplasmacondition:Directproductionofacetylenefromcoal[J].Fuel,1976,55:4346[6],,,.[J].,1998,21(1):16[7]BeiersHG,BaumannH,BittnerD.Pyrolysisofsomegaseousandliquidhydrocarbonsinhydrogenplasma[J].Fuel,1988,67(7):10121016[8]BittnerD,BaumannH,KleinJ.Relationbetweencoalpropertiesandacetyleneyieldinplasmapyrolysis[J].Fuel,1985,64:13701374[9]TamirA.[M]..:,1996[10].[M].:,1976.101103,460492[11],,.[J].,2000(2):5658[12],,,.[J].,2000,23(1):14,,EICA1980,20,,,2001,,,,200261,,,:010264444090,64444095,:01’’’©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.