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    Process for improving olefin etherification catalyst life
    2.
    发明授权
    Process for improving olefin etherification catalyst life 失效
    改进烯烃醚化催化剂寿命的方法

    公开(公告)号：US5300126A

    公开(公告)日：1994-04-05

    申请号：US963955

    申请日：1992-10-19

    申请人： Stephen H. Brown ,  Quang N. Le ,  Lawrence B. Alemany

    发明人： Stephen H. Brown ,  Quang N. Le ,  Lawrence B. Alemany

    IPC分类号： C07C51/347 ,  C07C51/567 ,  C10L1/14 ,  C10L1/16 ,  C10L1/18 ,  C10L1/188 ,  C10L1/20 ,  C10L1/22 ,  C10L1/24

    CPC分类号： C10L1/1883 ,  C07C51/347 ,  C07C51/567 ,  C10L1/14 ,  C10L1/18 ,  C10L1/1608 ,  C10L1/1824 ,  C10L1/1852 ,  C10L1/1857 ,  C10L1/1881 ,  C10L1/19 ,  C10L1/1905 ,  C10L1/201 ,  C10L1/204 ,  C10L1/205 ,  C10L1/224 ,  C10L1/2286 ,  C10L1/231 ,  C10L1/2437 ,  C10L1/245

    摘要： A method is disclosed for the pretreatment of olefinic hydrocarbon feedstock to remove conjugated dienes and/or basic nitrogen compounds that deactivate acidic catalyst particles used in olefin conversion processes by reacting the dienes with one or more dienophiles to form the corresponding Diels-Alder adduct, followed by catalytic conversion of the olefinic hydrocarbon feedstock containing the adduct. The formation of the Diels-Alder adduct essentially eliminates the role of dienes in the feedstock as catalyst deactivating agents. When maleic anhydride (MA) is employed as the dienophile, basic nitrogen reacts with maleic anhydride, or with the tetrahydrophthalic anhydride adduct, to lower the amount of catalyst deactivating basic nitrogen compounds in the feedstock. Where the olefin conversion process comprises etherification of isoolefins with alkanol in a C.sub.4 + or C.sub.5 + olefinic hydrocarbon feedstream to produce a gasoline boiling range product enriched in oxygen and rich in high octane value alkyl tertiary alkyl ethers, it has been discovered that the adduct, particularly those adducts formed with MA, is in the gasoline boiling range and contributes usefully to the oxygen enrichment of the gasoline and to octane value.

    摘要翻译： 公开了一种用于预处理烯烃原料以除去共轭二烯和/或碱性氮化合物的方法，其通过使二烯与一种或多种亲双烯体反应形成相应的狄尔斯 - 阿尔德加合物，使烯烃转化过程中使用的酸性催化剂颗粒失活，随后 通过催化转化含有加合物的烯烃原料。 Diels-Alder加合物的形成基本上消除了二烯在原料中作为催化剂失活剂的作用。 当使用马来酸酐（MA）作为亲二烯体时，碱性氮与马来酸酐或四氢邻苯二甲酸酐加合物反应，以降低原料中催化剂失活碱性氮化合物的量。 当烯烃转化方法包括在C4 +或C5 +烯烃原料流中异构烯烃与烷醇的醚化以产生富含氧并富含高辛烷值烷基叔烷基醚的汽油沸程产物时，已经发现加合物，特别是那些 与MA形成的加合物处于汽油沸点范围内，有助于汽油的富氧和辛烷值。

    Selective cracking and etherification of olefins
    3.
    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。

    Hydroisomerization process for pour point reduction of long chain alkyl aromatic compounds
    7.
    发明授权
    Hydroisomerization process for pour point reduction of long chain alkyl aromatic compounds 失效
    长链烷基芳族化合物倾点降低的加氢异构化方法

    公开(公告)号：US5157187A

    公开(公告)日：1992-10-20

    申请号：US636828

    申请日：1991-01-02

    申请人： Quang N. Le ,  Stephen S. Wong

    发明人： Quang N. Le ,  Stephen S. Wong

    IPC分类号： C10M127/04

    CPC分类号： C10M127/04 ,  C10M2203/06

    摘要： There is provided a method for reducing the pour point of an alkyl aromatic lube base stock by hydroisomerizing alkyl side groups on alkyl aromatic compounds. The alkyl aromatic, compounds may be alkylated naphthalenes. The hydroisomerization reaction may take place over a catalyst comprising zeolite beta and platinum.

    摘要翻译： 提供了一种通过烷基芳族化合物上的烷基侧基加氢异构化来降低烷基芳族润滑剂基础油料的倾点的方法。 烷基芳族化合物可以是烷基化萘。 加氢异构化反应可以在包含β沸石和铂沸石的催化剂上进行。

    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。

    Synthetic lubricants
    10.
    发明授权
    Synthetic lubricants 失效
    合成润滑剂

    公开(公告)号：US5008460A

    公开(公告)日：1991-04-16

    申请号：US358108

    申请日：1989-05-30

    申请人： William E. Garwood ,  Quang N. Le ,  Joosup Shim ,  Stephen S. Wong

    发明人： William E. Garwood ,  Quang N. Le ,  Joosup Shim ,  Stephen S. Wong

    IPC分类号： C10G50/02 ,  C10G69/12

    CPC分类号： C10G50/02 ,  C10G69/126

    摘要： Synthetic lubricating oils having a predetermined alkylaromatic structure are prepared from a mixture of mono- or dialkenyl benzene with an aliphatic olefin by free-radical reaction in the presence of ditertiary-butyl peroxide, for example. Equivalent napthalene derivatives may be substituted for the dialkenyl benzene. The oils that are formed exhibit a high Viscosity Index, and a low pour point. The viscosity of the synthetic lube stock produced may be controlled by changing the amount of peroxide used.

    摘要翻译： 具有预定烷基芳族结构的合成润滑油例如由二叔丁基过氧化物存在下，由单 - 或二烯基苯与脂族烯烃的混合物通过自由基反应制备。 等价萘衍生物可代替二苯基苯。 所形成的油表现出高粘度指数和低倾点。 可以通过改变所用过氧化物的量来控制所生产的合成润滑油的粘度。