变压吸附空分制氮用炭分子筛的制备研究

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1、大连理工大学硕士学位论文变压吸附空分制氮用炭分子筛的制备研究姓名：刘书林申请学位级别：硕士专业：化学工艺指导教师：徐绍平20060601盔鲎毽三盔塑生鲎丝摘要本文分别以石油焦和酚醛树脂为原料进行了炭分子筛(Carbonmolecularsieve，CMS)的制备研究。石演焦共寿畿残结构致密、荔否疆纯、磷鬣逛太等特点，掰其壹接裁番CMS难瑷选到空分的要求。本文针对石油焦的结构特点，采取预氧化、摘层、机械球磨方汝对其遴杼预处耀寒剿备CMS，磐对其工梵条{牛进行了考察。实验绩摹表明，颈氧诧碍隰增加CMS样品的微孑c．i

2、L容。提高其空分性能，其中经过HN03氧化处理的石油焦制备的CMS空分N2浓度达到93．0％，微孔孔容较大，平均孔径缩小；石油焦经过插层处理后，徽晶震片闯距d。。壤交大，磊溜焦静豢石墨诧络构转向觉定形炭结构，畜翻于CMS鲢裁备。插层处理时阃在60rain，插层剂浓H2S04与氧化剂H202的体积比为20，所制箭的eMS具备鞠黠较好空分性髓：魁浓度达到93．O％；经过长E手闼球赛石潼焦也《潋握褰铷S空分性能，球磨时间l00小时与球磨20小时相比，CMS空分制№的浓度由90．2％掇商到93，O％。酶醛树貉捌备CMS豹

3、实验结栗裘镌，酚醛树脂是裁蕾往髓饶超CMS斡缀好静琢瓣。工业试生产表明，工业CMS(CMS-A)空分性能达到了德国CMS产品(CMS-B)水平，农同撑鳇变匿暇辫溅试条{譬下，N2藏速为200L／(kg．h)，CMS-A麓氮滚疫98．弼，CMS—B黼氨浓度98．6％。麓键词：炭分子筛；石油焦；酚醛树脂；空气分离变里堡咝趔堑旦鲞佥置堕竺鱼!煎堕PreparationofCarbonMolecularSievesforAirSeparationbyPressureSwingAdsorptionAbstract1nthi

4、spaper，Carbonmolecularsieves(CMS)wereproducedfrompetroleumcokeandphenolicresin．Usually．itisdifficulttoprepareCMSsuitableforairseparationfrompetroleumcokedirectlybecauseofitscompactstructureofthecrystadlatticeandhighratioofC／H．Preoxidation。irltercalationandmec

5、hanicalgrindingareinvolvedtochangethemiorostrttcRu'eofpetroleumcoke．ThemicroperevolumeofCMSmadefrompreoxidizedcokeisincreaseda晕wellasabilityofairseparation．Especially也eCMSobtainedfromcokeoxidizedbyHN03canenrichN2to93％inPSA，Theimerlayerspacingd002ofthepetroleu

6、mcokeisincreasedafterintercalatedbyH202andH2S04、whichcontributestoporositydevelopmentofCMS．Asaresult,N2earlbeconcentratedto93％inPSAbytheCMSpreparedfromthepetroleumcokeinterealatedbyH2S04andH202inaratioof20：1(V／V)for60minutes．Itindicatesthattheabilityofairsepa

7、rationoftheCMScanbeenhancedbymechanicallygrindingofpetroleumcokeforalongtime．N2callbeenrichedfrom90．2％to92。5％inPSAbytheCMSbygrindingthepetroleumcokefrom20hto100h．AsuperperformanceofairseparationoftheCMSsynthesizedfromphenolleresinCallbeobtained．Abilityofairse

8、parationoftheCMS(CMS—A、fromthephenolicresiniscomparable、ⅣimthatofCMS(CMS-B)fromGermany，N2couldbeconcentratedto98．6％ofCMS-Aand98．7％ofCMS-Bwithaflowofproductgas200L／&g．h1inPSAK碍Words：Carbon