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ID:39102640
大小:4.21 MB
页数:81页
时间:2019-06-24
《Fe--ZSM--5分子筛上N2O氧化苯制苯酚反应与再生条件的分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、北京化工大学硕士学位论文始反应期操作域,持续时间约40min;另一段是相对活性稳定操作区域,尽管该段催化剂平均活性略低于前段,但有效操作域较宽,约为80min,若加上前段的性能,该操作域有效时间为120min。最终研究获取的相对适宜反应.再生匹配操作域为:反应温区425℃.445℃、再生温区400℃.470。C、空速4500h~、苯:N20=8:1、再生气中N20含量10%;并在此基础上探讨对比了固定床技术、移动床技术和循环流化床技术在Fe.ZSM.5分子筛上N20氧化苯制苯酚反应.再生匹配中的特点和各自的技术优势,提出了相应的可参考方案。关键词:N20,苯,苯酚,Fe.ZSM
2、.5,失活,再生IlINVESTIGATIoNONREACTIoNANDREGENERATIoNOPERATINGCoNDITIoNSoFBENZENEoⅪDATIoNToPHENOLⅥ,ITHN20oVERFe-ZSM一5ZEOLITEABSTRACTThenewprocessofbenzeneone-stepoxidationtophenolwithN20overFe--ZSM·-5zeoliteisgoodforefficientproductionofphenolwhilefacilitatingtheremovalofN20inindustrialemissions,
3、thisnewprocessisawin-winprojectabouteconomicdevelopmentandenvironmentalfriendly.ResearchofthisprocessfocusedonthecatalystR&Dcurrently,theFe—ZSM-5zeolite,asacatalyst,hasexcellentinitialcatalyticactivityinthisreactionandgoodperformanceinregeneration,buttheproblemofrapiddeactivationisthemainobs
4、tacleintheslowprocessofindustrialization.Basedonthepastresearch,thisarticlestudiedontheeffectiveoperatingrangeofreactionandregenerationconditions,andmatchingschemeofreaction-regeneration.Hopetolaythefoundationformatchingandcouplingtechnologyofreaction-regenerationinultimateindustrialproducti
5、onofphen01.Experimentsofstudyonreactionconditionswereinvestigatedbysinglefactortestmethodandwereoperatinginaintegraltubularreactor((}16x2mm,L=400mm)onfixed-bed,experimentedandcomparedtheeffectsofreactiontemperatures,spacevelocity,molarratiosofbenzene:N20onperformanceofFe—ZSM一5zeolite.Rangeof
6、optimumoperatingconditionsofreactionweredeterminedasfollows:reactiontemperatureof400"C-450。C,spacevelocityof4000h-1_5000h一,benzene:N20of6:1.10:1.Undersuchconditions,theyieldofphenolisrelativelyhigher,upto77.8%,effectiveoperatingrangeofFe—ZSM.5zeoliteiS120min.Ill北京化工大学硕士学位论文Experimentsofstudy
7、onregenerationconditionsofFe-·ZSM-·5zeolitewereinvestigatedbysinglefactortestmethodandwereoperatinginaintegraltubularreactor(由16x2mm,L=400mm)onfixed-bed,experimentedandcomparedtheeffectsofregenerationtemperatures,regenerationtime,spacevelocityofreg
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