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    Hydrocarbon conversion to propylene with high silica medium pore zeolite catalysts
    8.
    发明授权
    Hydrocarbon conversion to propylene with high silica medium pore zeolite catalysts 失效
    烃转化为丙烯与高二氧化硅中孔沸石催化剂

    公开(公告)号：US06656345B1

    公开(公告)日：2003-12-02

    申请号：US09304657

    申请日：1999-05-04

    申请人： Tan-Jen Chen ,  Mechilium (Marcel) Johannes Gerardus Janssen ,  Luc Roger Marc Martens ,  Machteld Maria Mertens ,  Philip Andrew Ruziska ,  Lynn L. Zhao ,  Jannetje Maatje van den Berge

    发明人： Tan-Jen Chen ,  Mechilium (Marcel) Johannes Gerardus Janssen ,  Luc Roger Marc Martens ,  Machteld Maria Mertens ,  Philip Andrew Ruziska ,  Lynn L. Zhao ,  Jannetje Maatje van den Berge

    IPC分类号： C10G1102

    CPC分类号： C10G11/05 ,  C10G2400/20

    摘要： The invention provides a method for converting a hydrocarbon feedstock to propylene comprising: contacting an olefinic hydrocarbon feedstock boiling in the naphtha range with a catalyst comprising a zeolitic catalyst selected from the group consisting of medium pore zeolites having a ratio of silica to alumina above 200 and pore diameter less than 0.7 nm under cracking conditions to selectively produce propylene. The preferred catalyst comprises of a zeolite having an 8, 10, or 12 membered ring pore structure. The preferred catalysts are selected from the group consisting of zeolites from the families MFI, MEL, MTW, TON, MTT, FER, MFS, and the zeolites ZSM-21, ZSM-38 and ZSM-48. Preferably the method is carried out to produce propylene with greater than 50% specificity, more preferably, the propylene to butylene ratio is at least 2:1 or a propylene to ethylene ratio of at least 4:1. The olefinic hydrocarbon feedstock consists essentially of hydrocarbons boiling within the range of 18° to 220° C. (65° F. to 430° F.). The olefinic hydrocarbon feedstock comprises from about 10 wt % to about 70 wt % olefins. Preferably the olefinic hydrocarbon feedstock comprises from about 5 wt % to about 35 wt % paraffins. The catalyst is contacted in the range of 400° C. to 700° C., a weight hourly space velocity (“WHSV”) of 1 to 1,000 hr−1 and a pressure of 0.1 to 30 atm. absolute.

    摘要翻译： 本发明提供了一种用于将烃原料转化成丙烯的方法，包括：使在石脑油范围沸腾的烯烃原料与包含沸石催化剂的催化剂接触，所述催化剂选自二氧化硅与氧化铝的比例大于200的中孔沸石， 孔径小于0.7nm，在选择性地生产丙烯。 优选的催化剂包括具有8,10或12元环孔结构的沸石。 优选的催化剂选自族MFI，MEL，MTW，TON，MTT，FER，MFS和沸石ZSM-21，ZSM-38和ZSM-48的沸石。 优选地，该方法进行以产生具有大于50％特异性的丙烯，更优选丙烯与丁烯的比率为至少2:1或丙烯与乙烯的比率为至少4:1。 烯烃原料基本上由沸点在18°至220℃（65°F至430°F）范围内的烃组成。 烯烃原料包含约10重量％至约70重量％的烯烃。 优选地，烯烃原料包含约5重量％至约35重量％的链烷烃。 催化剂在400℃至700℃的范围内接触，1至1,000小时-1的重时空速（“WHSV”）和0.1至30大气压的压力。 绝对。

    Sequential catalytic and thermal cracking for enhanced ethylene yield
    9.
    发明授权
    Sequential catalytic and thermal cracking for enhanced ethylene yield 失效
    连续催化和热裂解提高乙烯产率

    公开(公告)号：US6033555A

    公开(公告)日：2000-03-07

    申请号：US872660

    申请日：1997-06-10

    申请人： Tan-Jen Chen ,  Luc Roger Marc Martens

    发明人： Tan-Jen Chen ,  Luc Roger Marc Martens

    IPC分类号： C07C4/02 ,  C10G51/02

    CPC分类号： C07C4/02 ,  C10G2400/20

    摘要： The invention provides a process for improving the conversion of a hydrocarbon feedstock to light olefins comprising the steps of first contacting the hydrocarbon feedstock with a light olefin producing cracking catalyst and subsequently thermally cracking the unseparated stream to produce additional ethylene. Preferably the zeolite catalyst is selected from the group consisting of ferrierite, heulandite, phillipsite, faujasite, chabazite, erionite, mordenite, offretite, gmelinite, analcite, ZSM-5, ZSM-11, ZSM-25, gallium silicate zeolite, zeolite Beta, zeolite rho, ZK5, titanosilicate, zeolites having a silica to alumina molar ratio within the range of about 2.0:1 to 2000:1 ferrosilicate; zeolites such as those described in U.S. Pat. No. 4,238,318; borosilicate zeolites such as those described in Belgian Pat. No. 859656; zeolites designated by the Linde Division of Union Carbide by the letters of X, Y, A, L; zeolites such as those described in U.S. Pat. No. 5,552,035; and zeolites such as those described in U.S. Pat. No. 5,348,924. Preferably the catalyst is contacted at a temperature within the range of about 500.degree. C. to about 750.degree. C. and the feedstock flows at a weight hourly space velocity in the range of about 0.1 Hr.sup.-1 WHSV to about 100 Hr.sup.-1 WHSV. The trim thermal cracking is carried out between 650.degree. C. to 900.degree. C. for 0.1 to 20 seconds.

    摘要翻译： 本发明提供了一种改进烃原料转化成轻质烯烃的方法，包括首先使烃原料与轻质烯烃生成裂化催化剂接触，随后热裂裂未分离的流以产生额外的乙烯。 优选地，沸石催化剂选自镁碱沸石，胡萝卜石，氯化石，八面沸石，菱沸石，毛沸石，丝光沸石，白云母，绿泥石，anal石，ZSM-5，ZSM-11，ZSM-25，硅酸镓沸石，β沸石， 沸石rho，ZK5，钛硅酸盐，二氧化硅与氧化铝摩尔比在约2.0:1至2000:1的硅酸铝的范围内的沸石; 沸石如美国专利No. 第4,238,318号; 硼硅酸盐沸石，如比利时专利中描述的那些。 No. 859656; 由联合碳化物林德分公司以X，Y，A，L的字母指定的沸石; 沸石如美国专利No. 第5,552,035号; 和沸石，例如美国专利No. 第5,348,924号。 优选地，催化剂在约500℃至约750℃范围内的温度下接触，并且原料以约0.1Hr-1WHSV至约100Hr-1WHSV的重时空速流动。 修整热裂化在650℃至900℃之间进行0.1至20秒。