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    Two stage fluid catalytic cracking process for selectively producing b. C.su2 to C.sub.4 olefins
    3.
    发明授权
    Two stage fluid catalytic cracking process for selectively producing b. C.su2 to C.sub.4 olefins 失效
    用于选择性生产C2至C4烯烃的两阶段流化催化裂解方法

    公开(公告)号：US6106697A

    公开(公告)日：2000-08-22

    申请号：US073084

    申请日：1998-05-05

    申请人： George A. Swan ,  Michael W. Bedell ,  Paul K. Ladwig ,  John E. Asplin ,  Gordon F. Stuntz ,  William A. Wachter ,  Brian Erik Henry

    发明人： George A. Swan ,  Michael W. Bedell ,  Paul K. Ladwig ,  John E. Asplin ,  Gordon F. Stuntz ,  William A. Wachter ,  Brian Erik Henry

    IPC分类号： C10G11/05 ,  C10G51/02 ,  C10G57/00 ,  C10G57/02

    CPC分类号： C10G57/02 ,  C10G2400/20

    摘要： C.sub.2 to C.sub.4 olefins are selectively produced from a gas oil or resid in a two stage process. The gas oil or resid is reacted in a first stage comprised of a fluid catalytic cracking unit wherein it is converted in the presence of conventional large pore zeolitic catalyst to reaction products, including a naphtha boiling range stream. The naphtha boiling range stream is introduced into a second stage comprised of a process unit containing a reaction zone, a stripping zone, a catalyst regeneration zone, and a fractionation zone. The naphtha feedstream is contacted in the reaction zone with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures ranging from about 500 to 650.degree. C. and a hydrocarbon partial pressure from about 10 to 40 psia. Vapor products are collected overhead and the catalyst particles are passed through the stripping zone on the way to the catalyst regeneration zone. Volatiles are stripped with steam in the stripping zone and the catalyst particles are sent to the catalyst regeneration zone where coke is burned from the catalyst, which is then recycled to the reaction zone.

    摘要翻译： C 2 -C 4烯烃可以从瓦斯油中选择性地制备，或者在两段工艺中残留。 瓦斯油或渣油在由流化催化裂化装置组成的第一阶段中反应，其中在常规大孔沸石催化剂存在下将其转化为包括石脑油沸程的反应产物。 将石脑油沸程流引入包含含有反应区，汽提区，催化剂再生区和分馏区的处理单元的第二阶段。 石脑油原料流在反应区中与含有约10至50wt。 ％的平均孔径小于约0.7纳米的结晶沸石在包括约500至650℃的温度和约10至40psia的烃分压的反应条件下进行。 蒸气产物被顶部收集，催化剂颗粒在通向催化剂再生区的途中通过汽提区。 挥发物在汽提区中用蒸汽汽提，并将催化剂颗粒送入催化剂再生区，其中焦炭从催化剂燃烧，然后再循环到反应区。

    Multi component catalyst and its use in catalytic cracking
    9.
    发明授权
    Multi component catalyst and its use in catalytic cracking 有权
    多组分催化剂及其在催化裂化中的应用

    公开(公告)号：US07326332B2

    公开(公告)日：2008-02-05

    申请号：US10671080

    申请日：2003-09-25

    申请人： Tan-Jen Chen ,  John Scott Buchanan ,  Brian Erik Henry ,  Paul F. Keusenkothen ,  Philip A. Ruziska ,  David L. Stern

    发明人： Tan-Jen Chen ,  John Scott Buchanan ,  Brian Erik Henry ,  Paul F. Keusenkothen ,  Philip A. Ruziska ,  David L. Stern

    IPC分类号： C10G11/00 ,  C10G11/05

    CPC分类号： C10G11/05 ,  B01J29/005 ,  B01J29/40 ,  B01J29/85

    摘要： A multi component catalyst and catalytic cracking process for selectively producing C3 olefins. The catalyst comprises a first molecular sieve having an intermediate pore size, a second molecular sieve and, optionally a third molecular sieve having a large pore size. At least one of the channels of the second molecular sieve has a pore size index that is less than the pore size index of at least one channel of the first molecular sieve. The process is carried out by contacting a feedstock containing hydrocarbons having at least 5 carbon atoms is contacted, under catalytic cracking conditions, with the multi component catalyst. The catalyst finds application in the cracking of naphtha and heavy hydrocarbon feedstocks.

    摘要翻译： 用于选择性制备C 3 O 3烯烃的多组分催化剂和催化裂解方法。 催化剂包括具有中等孔径的第一分子筛，第二分子筛和任选的具有大孔径的第三分子筛。 第二分子筛的至少一个通道的孔径指数小于第一分子筛的至少一个通道的孔径指数。 该方法通过使含有至少5个碳原子的烃的原料在催化裂化条件下与多组分催化剂接触来进行。 该催化剂可用于石脑油和重质烃原料的裂解。