欢迎来到天天文库
浏览记录
ID:11066688
大小:49.50 KB
页数:14页
时间:2018-07-09
《studies of the methane steam reforming reaction at high pressure in a ceramic membrane reactor》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、StudiesoftheMethaneSteamReformingReactionatHighPressureinaCeramicMembraneReactorJournalofNaturalGasChemistr~www.elsevier.com/locate/jngcAvailableonlineatwww.sciencedirect.com8c…@.…cT.JournalofNaturalGasChemistry15(2006)73—81ArticleSCIENCEPRESSStudiesoftheMethaneSteam
2、ReformingReactionatHighPressureinaCeramicMembraneReactorP.Hacarlioglu,Y.Gu,S.T.OyamaEnvironmentalCatalysisandNanomaterialsLaboratory,DepartmentolChemicalEngineering(o211),VirginiaPolytechnicInstitute&StateUniversity,Blacksburg,Virginia24061fManuscriptreceivedApri
3、l11,2006]Abstract:TheeffectsoftemperatureandpressureonthesteamreformingofmethanefCH4+H2O{=3H2+CO)wereinvestigatedinamembranereactor(MR)withahydrogenpermeablemembrane.Thestudiesusedanovelsilica-basedmembranepreparedbyusingthechemicalvapordepositionfCVD1tech-niquewitha
4、permeanceforH2of6.0x10—mol?m一.s一.Pa~at923K.Theresultsinapacked—bedreactor(PBR)werecomparedtothoseofthemembranereactoratvarioustemperaturesf773—923K)andpressures(1-20atm,i01.3—2026.5kPa)usingacommercialNi/MgA1204catalyst.Theconversionofmethanewasimprovedsignificantlyi
5、ntheMRbythecountercurrentremova1ofhydrogenatalltern—peraturesandallowedproductyieldshigherthantheequilibriumtobeobtained.Pressurehadapositiveeffectonthehydrogenyieldbecauseoftheincreaseindrivingforceforthepermeanceofhydrogen.Theyieldofhydrogenincreasedwithpressureand
6、reachedavalueof73x10—0mo1.g一.s一at2026.5kPaand923Kwhichwashigherby108%thanthevalueof35x10—0mo1.g一.s一obtainedfortheequilibriumyield.Theresultsobtainedwiththesilica-basedmembraneweresimilartothoseobtainedwithvariousothermembranesasreportedintheliterature.Keywords:steamr
7、eformingofmethane;silica-basedmembrane;membranereactor;hydrogen1.IntroductionHydrogenisenvisionedtobeoneofthedomi—nantenergycarriersofasustainableenergysupplysystemofthefuture.Atpresent,naturalgasisoneofthemostviablesourcesforhydrogenproductionbecauseofitsabundantsup
8、plyanditsrelativelylowcost.Thesteamreformingprocessiscurrentlyusedcommerciallytoproducehydrogenandsynthesisgas(amixtureofH2andCO)fr
此文档下载收益归作者所有