Olefin conversion catalyst regeneration
    1.
    发明授权
    Olefin conversion catalyst regeneration 失效
    烯烃转化催化剂再生

    公开(公告)号:US5405814A

    公开(公告)日:1995-04-11

    申请号:US72379

    申请日:1993-06-07

    摘要: An olefin hydration catalyst is regenerated with a non-oxidizing light gas, such as hydrogen. Light olefins, especially propylene, are converted to a mixture of alcohol(s), such as isopropanol (IPA) and ether(s), such as diisopropylether (DIPE) by contacting a feed containing the olefin with water and/or alcohol with the olefin hydration catalyst. Regeneration conditions include temperatures of from about 150.degree. C. to about 550.degree. C., pressures below about 1000 psig (6900 kPa). Lower pressures of regeneration unexpectedly demonstrated more effective catalyst regeneration through greater coke removal.

    摘要翻译: 烯烃水合催化剂用非氧化性轻质气体如氢气再生。 通过使含有烯烃的进料与水和/或醇接触,将轻质烯烃,特别是丙烯转化成醇,如异丙醇(IPA)和醚,如二异丙基醚(DIPE))的混合物, 烯烃水合催化剂。 再生条件包括约150℃至约550℃的温度,低于约1000psig(6900kPa)的压力。 更低的再生压力意外地通过更大的焦炭去除表明更有效的催化剂再生。

    Skeletal isomerization of n-pentenes using ZSM-35 in the presence of
hydrogen
    2.
    发明授权
    Skeletal isomerization of n-pentenes using ZSM-35 in the presence of hydrogen 失效
    在氢存在下使用ZSM-35对正戊烯的骨架异构化

    公开(公告)号:US5382743A

    公开(公告)日:1995-01-17

    申请号:US51930

    申请日:1993-04-26

    CPC分类号: C07C5/2775

    摘要: A method for conversion of linear C5 olefins in the presence of contaminant diolefins to corresponding iso-olefins of the same carbon number which comprises contacting a linear C5 olefin-containing organic feedstock with a catalyst comprising material having the structure of ZSM-35 under skeletal isomerization conditions, wherein said conversion is carried out at temperatures between about 100.degree. and 750.degree. C., weight hourly space velocities (WHSV) based on linear C5 olefins in said feedstock between 0.1 and 500 WHSV, C5 linear olefin partial pressures between 2 and 2000 kPa, and in the presence of hydrogen added in an amount sufficient to enhance linear C5 olefin conversion activity and extend the catalyst life of the catalyst relative to operation without any hydrogen added.

    摘要翻译: 在存在污染二烯烃的情况下将线性C 5烯烃转化为相同碳数的相应异烯烃的方法,其包括使含有直链C 5烯烃的有机原料与包含具有ZSM-35结构的材料的催化剂在骨架异构化 条件,其中所述转化在约100℃和750℃之间的温度下进行,基于在所述原料中的线性C 5烯烃在0.1至500WHSV之间的重小时空速(WHSV),2至2000之间的C5线性烯烃分压 kPa,并且在氢气存在下加入的量足以提高线性C5烯烃转化活性,并延长催化剂相对于操作的催化剂寿命而没有加入任何氢气。

    Process for starting up an olefin hydration reactor
    3.
    发明授权
    Process for starting up an olefin hydration reactor 失效
    启动烯烃水合反应器的方法

    公开(公告)号:US5288924A

    公开(公告)日:1994-02-22

    申请号:US946705

    申请日:1992-09-18

    IPC分类号: B01J29/70 C07C29/04 C07C41/05

    摘要: A method for starting up a fixed bed propylene hydration reactor containing shape selective metallosilicate catalyst particles for the production of isopropanol and/or diisopropyl ether is disclosed comprising the following sequential steps: contacting a feedstream comprising propane with catalyst particles in a hydration reactor; then introducing a feedstream comprising isopropanol into the reactor to displace propane. Next, a feedstream comprising propylene is introduced into the reactor under etherification conditions. Finally, a feedstream is introduced in the reactor comprising water under etherification and hydration reaction conditions whereby diisopropyl ether and isopropanol are produced.

    摘要翻译: 公开了一种用于启动含有用于生产异丙醇和/或二异丙醚的形状选择性金属硅酸盐催化剂颗粒的固定床丙烯水合反应器的方法,其包括以下顺序步骤:使包含丙烷的进料流与水合反应器中的催化剂颗粒接触; 然后将包含异丙醇的进料流引入反应器以置换丙烷。 接下来,在醚化条件下将包含丙烯的进料流引入反应器中。 最后,在醚化和水合反应条件下将反应器中的水引入反应器中,由此产生二异丙醚和异丙醇。

    Isoparaffin/olefin alkylation
    4.
    发明授权
    Isoparaffin/olefin alkylation 失效
    异链烷烃/烯烃烷基化

    公开(公告)号:US5625113A

    公开(公告)日:1997-04-29

    申请号:US365334

    申请日:1994-12-28

    IPC分类号: C07C2/58 C07C2/62 C07C9/16

    摘要: A process is disclosed for alkylating an isoparaffin with an olefin comprising the steps of:(a) reacting an isoparaffin having from 4 to 8 carbon atoms with an olefin having from 2 to 12 carbon atoms in a first alkylation reaction stage at temperature from about -40.degree. C. to about 500.degree. C. and overall isoparaffin:olefin feed weight ratio of from about 1:1 to about 250:1 with a solid alkylation catalyst comprising a synthetic porous crystalline material characterized by an X-ray diffraction pattern including values substantially as set forth in Table I of the specification and having a composition comprising the molar relationshipX.sub.2 O.sub.3 :(n)YO.sub.2,wherein n is less than about 35, X is a trivalent element and Y is a tetravalent element;(b) mixing the effluent from said first alkylation stage with additional olefin to evolve an intermediate stream having an isoparaffin:olefin weight ratio of from about 2:1 to about 100:1; and(c) reacting said intermediate stream in a second alkylation stage in the absence of intermediate fractionation with a liquid acid catalyst comprising H.sub.2 SO.sub.4 to produce C.sub.5 + alkylate.

    摘要翻译: 公开了一种用烯烃烷基化异链烷烃的方法,该方法包括以下步骤:(a)使第一烷基化反应阶段中具有4至8个碳原子的异链烷烃与具有2至12个碳原子的烯烃反应, 40℃至约500℃,总异构链烷烃:烯烃进料重量比为约1:1至约250:1,其中固体烷基化催化剂包含合成多孔结晶材料,其特征在于X射线衍射图包括值 基本上如说明书的表I所述,并且具有包含摩尔关系X 2 O 3:(n)YO 2的组成,其中n小于约35,X是三价元素,Y是四价元素; (b)将来自所述第一烷基化阶段的流出物与另外的烯烃混合以产生具有约2:1至约100:1的异链烷烃:烯烃重量比的中间料流; 和(c)在不与中间分级分离的第二烷基化阶段中使所述中间物流与包含H 2 SO 4的液体酸催化剂反应,以产生C5 +烷基化物。

    Treating oxygenate containing feedstreams in the conversion of oxygenates to olefins
    7.
    发明授权
    Treating oxygenate containing feedstreams in the conversion of oxygenates to olefins 有权
    在含氧化合物转化为烯烃的过程中,处理含氧化合物的进料流

    公开(公告)号:US07385100B2

    公开(公告)日:2008-06-10

    申请号:US11787337

    申请日:2007-04-16

    IPC分类号: C07C1/00 B63B25/08

    摘要: This invention is directed to removing contaminants from an oxygenate-containing feedstream for an oxygenate to olefin reaction system. Oxygenate feeds used in the conversion of oxygenates to olefins, and which contain contaminants, are heated to form a vapor stream and a liquid stream. The heating is conducted so that a majority of the metalloaluminophosphate molecular sieve catalyst contaminants is contained in the liquid stream. The vapor stream is separated from the liquid stream, and the separated vapor stream is contacted with the metalloaluminophosphate molecular sieve catalyst to form olefin product. The heating of the feedstream and the separation of the vapor stream can be carried out in one or more stages.

    摘要翻译: 本发明涉及从用于含氧化合物到烯烃反应体系的含氧化合物的进料流中除去污染物。 用于将含氧化合物转化为烯烃并且含有污染物的氧化物进料被加热以形成蒸汽流和液体流。 进行加热,使得大部分金属铝磷酸盐分子筛催化剂污染物被包含在液体流中。 将蒸汽流与液体流分离,并将分离的蒸汽流与金属铝磷酸盐分子筛催化剂接触以形成烯烃产物。 进料流的加热和蒸汽流的分离可以在一个或多个阶段中进行。

    Catalytic olefin hydration for ether production
    10.
    发明授权
    Catalytic olefin hydration for ether production 失效
    用于生产乙烯的催化烯烃水合物

    公开(公告)号:US5162591A

    公开(公告)日:1992-11-10

    申请号:US557241

    申请日:1990-07-25

    CPC分类号: C07C41/05 C07C41/06

    摘要: A process for production of dialkyl ether by hydration and etherification of olefinic feedstock containing at least one lower alkene by contacting the olefinic feedstock and water in a catalytic reaction zone with porous solid metallosilicate acidic catalyst under olefin hydration and etherification conditions. Improvement is achieved by recovering a first fluid effluent stream from the reaction zone; splitting the first fluid effluent stream into a liquid product recovery stream and a fluid recycle stream; and passing the fluid recycle stream consisting essentially of olefin, alcohol and ether in effluent stream proportions for feeding to the reaction zone along with fresh olefinic feedstock and fresh water, wherein the amount of fluid recycle stream is sufficient to maintain a homogeneous single fluid reaction phase in the reaction zone.

    摘要翻译: 在烯烃水合和醚化条件下,通过使催化反应区中的烯属原料和水与多孔固体金属硅酸盐酸性催化剂接触,通过使包含至少一种低级烯烃的烯烃原料进行水合和醚化来生产二烷基醚的方法。 通过从反应区回收第一流体流出物流来实现改善; 将第一流体流出物流分解成液体产物回收流和流体循环流; 并将基本上由烯烃,醇和醚组成的流体循环料流以流出物流的比例通过,以与新鲜的烯烃原料和淡水一起进料到反应区,其中流体循环流的量足以保持均匀的单一流体反应相 在反应区。