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59 条记录 (耗时 0.028 秒)

    Selective cracking and etherification of olefins
    7.
    发明授权
    Selective cracking and etherification of olefins 失效
    烯烃的选择性裂化和醚化

    公开(公告)号：US5264635A

    公开(公告)日：1993-11-23

    申请号：US770215

    申请日：1991-10-03

    申请人： Quang N. Le ,  Robert T. Thomson

    发明人： Quang N. Le ,  Robert T. Thomson

    IPC分类号： C07C6/04 ,  C07C41/06 ,  C07C41/00 ,  C07C4/06

    CPC分类号： C07C6/04 ,  C07C41/06

    摘要： A selective alkene upgrading process wherein a mixture of intermediate molecular weight monoalkenes comprising at least one linear alkene component and at least one tertiary alkene component is contacted under selective olefin interconversion conditions with medium pore, shape selective acid catalyst, such as MCM-22 aluminosilicate zeolite, thereby converting at a major amount of linear intermediate alkene to lower alkene while leaving tertiary alkene substantially unconverted. In the preferred embodiments, the process interconversion conditions comprise reaction temperature in the range of about 300.degree. C. to 550.degree. C., pressure in the range of 100 kpa to 1000 kPa, thereby selectively converting at least 60% (net) of linear intermediate alkene while converting less than 20% (net) of branched alkene. By etherifying at least a portion of the unconverted tertiary alkene, an oxygenated fuel having enhanced octane rating is obtained. Cracked lower olefins may be recovered for upgrading.

    摘要翻译： 选择性烯烃改质方法，其中包含至少一种直链烯烃组分和至少一种叔烯烃组分的中等分子量单烯烃的混合物在选择性烯烃相互转化条件下与中孔，形状选择性酸催化剂如MCM-22铝硅酸盐沸石 ，从而将主要量的线性中间体烯转化为低级烯烃，同时使叔烯烃基本上未转化。 在优选的实施方案中，工艺互转条件包括在约300℃至550℃范围内的反应温度，在100kpa至1000kPa范围内的压力，由此选择性地将至少60％（净）的线性 中间烯烃，同时转化少于20％（净）的支链烯烃。 通过醚化至少一部分未转化的叔烯烃，获得具有增强的辛烷值的含氧燃料。 可以回收裂解的低级烯烃进行升级。

    Multistage olefin upgrading process using synthetic mesoporous crystalline material
    8.
    发明授权
    Multistage olefin upgrading process using synthetic mesoporous crystalline material 失效
    使用合成介孔结晶材料进行多级烯烃升级工艺

    公开(公告)号：US5134241A

    公开(公告)日：1992-07-28

    申请号：US718879

    申请日：1991-06-21

    申请人： Quang N. Le ,  Robert T. Thomson ,  Grant H. Yokomizo

    发明人： Quang N. Le ,  Robert T. Thomson ,  Grant H. Yokomizo

    IPC分类号： B01J29/04 ,  C07C2/12 ,  C07C4/06 ,  C07C6/04 ,  C07C7/177 ,  C07C11/02

    CPC分类号： C07C7/177 ,  B01J29/04 ,  C07C11/02 ,  C07C2/12 ,  C07C4/06 ,  C07C6/04 ,  C07C2529/70

    摘要： A process for upgrading olefinic feedstocks containing lower olefins employing new synthetic catalyst of ultra-large pore crystalline material. The new crystalline material exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25.degree. C., a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 Angstrom Units and a hexagonal arrangement of uniformly sized pores with a maximum perpendicular cross section of at least about 13 Angstrom units. A multistage process is provided for catalytic oligomerization of lower olefin which comprises contacting olefinic feedstock under catalytic conversion conditions with acid metallosilicate solid catalyst having the structure of MCM-41 with hexagonal honeycomb lattice structure consisting essentially of uniform pores in the range of about 20 to 100 Angstroms. The oligomerization reaction is very selective, especially when conducted at temperature of about 40.degree. to 250.degree. C., yielding branched intermediate olefins. Low severity reaction permits excellent conversio of lower olefins at pressure of about 100-13,000 pKa range and moderate space velocity. Intermediate oligomers produced over MCM-41, when reacted under cracking/disproportionation conditions yield etherifiable C.sub.4 + isoalkenese in good yield.

    摘要翻译： 一种使用新型超大孔结晶材料合成催化剂来提纯含有低级烯烃的烯烃原料的方法。 新的结晶材料表现出非常大的吸附能力，其吸附能力在50托和25℃时苯吸附能力大于约15克苯/ 100克，可以用大于约100的d100值进行指数的六方电子衍射图 18埃单位和具有至少约13埃单位的最大垂直截面的均匀尺寸孔的六边形排列。 提供了用于低级烯烃催化低聚的多级方法，其包括在催化转化条件下使烯属原料与具有MCM-41结构的酸性金属硅酸盐固体催化剂接触，其中六方蜂窝晶格结构基本上由约20至100范围内的均匀孔组成 埃 低聚反应非常有选择性，特别是当在约40℃至250℃的温度下进行时，产生支链中间体烯烃。 低强度反应允许在约100-13000pKa范围的压力和适度的空间速度下的低级烯烃的优异转录。 在裂化/歧化条件下反应时，MCM-41产生的中间体低聚物以良好的产率得到可醚化的C4 +异烯烃。

    Hydrogen transfer process
    9.
    发明授权
    Hydrogen transfer process 失效
    氢转移过程

    公开(公告)号：US5326922A

    公开(公告)日：1994-07-05

    申请号：US929547

    申请日：1992-08-13

    申请人： Albin Huss, Jr. ,  Quang N. Le ,  Robert T. Thomson

    发明人： Albin Huss, Jr. ,  Quang N. Le ,  Robert T. Thomson

    IPC分类号： C07C2/58 ,  C07C5/52

    CPC分类号： C07C5/52 ,  C07C2/58 ,  C07C2529/70

    摘要： The transfer of hydrogen from a paraffin to an olefin is carried out in the presence of, as catalyst, MCM-36. Especially when the paraffin reactant is an isoparaffin, the olefin produced from the reacted isoparaffin may react with unreacted isoparaffin to also produce an alkylate product.

    摘要翻译： 氢气从烷烃转化为烯烃在作为催化剂的MCM-36存在下进行。 特别是当链烷烃反应物是异链烷烃时，由反应的异链烷烃产生的烯烃可与未反应的异链烷烃反应，产生烷基化产物。

    Process for the production of tertiary alkyl ether rich FCC gasoline
    10.
    发明授权
    Process for the production of tertiary alkyl ether rich FCC gasoline 失效
    生产叔烷基醚浓缩FCC汽油的方法

    公开(公告)号：US5489719A

    公开(公告)日：1996-02-06

    申请号：US255546

    申请日：1994-06-06

    申请人： Quang N. Le ,  Robert T. Thomson

    发明人： Quang N. Le ,  Robert T. Thomson

    IPC分类号： C07C41/06 ,  C07C43/04 ,  C10L1/182 ,  C10L1/185 ,  C10L10/10 ,  C07C41/08 ,  C07C5/08 ,  C07C7/167 ,  C07C43/00

    CPC分类号： C07C41/06

    摘要： A process is disclosed for the production of alkyl tertiary alkyl ethers in C.sub.4 + hydrocarbon streams rich in isoolefins, typically containing catalyst deactivating amounts of dienes and/or compounds containing heteroatoms. The process is especially advantageous in extending the cycle length for the zeolite catalyzed etherification of isoolefins in C.sub.4 + FCC gasoline by reducing catalyst aging. It has been discovered that if hydrogen is cofed with the alkanol and C.sub.4 + isoolefin rich feedstreams to an etherification reaction catalyzed by acidic zeolite wherein the zeolite has been impregnated with a noble metal the rate of catalyst aging or deactivation is substantially lowered. The process is especially effective, i.e., catalyst aging is particularly reduced, when hydrogen is cofed to an etherification reaction using acidic zeolite Beta catalyst containing palladium.

    摘要翻译： 公开了用于在富含异烯烃的C4 +烃流中生产烷基叔烷基醚的方法，通常含有催化剂失活量的二烯和/或含杂原子的化合物。 该方法特别有利于通过降低催化剂老化来延长C4 + FCC汽油中异烯烃沸石催化醚化的循环长度。 已经发现，如果氢气与链烷醇和C 4 +异烯烃富集的原料流共沸到由酸性沸石催化的醚化反应，其中沸石已经用贵金属浸渍，则催化剂老化或失活的速率显着降低。 当使用含钯的酸性沸石β催化剂将氢气共沸至醚化反应时，该方法特别有效，即催化剂老化特别降低。