Process for improving olefin etherification catalyst life
    1.
    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

    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。

    Purification of aromatic feedstock
    2.
    发明授权
    Purification of aromatic feedstock 有权
    芳香原料的纯化

    公开(公告)号:US09057025B2

    公开(公告)日:2015-06-16

    申请号:US13186039

    申请日:2011-07-19

    申请人: Stephen H. Brown

    发明人: Stephen H. Brown

    IPC分类号: C10G25/03 B01J29/06 B01J29/70

    摘要: The invention is a process for removing impurities from an aromatics stream and apparatus for the practice thereof, whereby trace olefins and dienes are removed from aromatic plant feedstocks using a reactor design that enables the product to be backmixed with the feedstock and that enables a feed/effluent heat exchanger.

    摘要翻译: 本发明是用于从芳族化合物流中除去杂质的方法及其实践的装置,其中使用能使产物与原料反混的反应器设计从芳族植物原料中除去痕量烯烃和二烯, 流出热交换器。

    Enhancement of saturates content in heavy hydrocarbons utilizing ultrafiltration
    6.
    发明授权
    Enhancement of saturates content in heavy hydrocarbons utilizing ultrafiltration 有权
    利用超滤增强重质烃中的饱和物含量

    公开(公告)号:US08177965B2

    公开(公告)日:2012-05-15

    申请号:US11980157

    申请日:2007-10-30

    IPC分类号: C07C7/144

    摘要: This invention relates to an ultrafiltration process for separating a heavy hydrocarbon stream to produce an enriched saturates content stream(s) utilizing an ultrafiltration separations process. The enriched saturates content streams can then be further processed in refinery and petrochemical processes that will benefit from the higher content of saturated hydrocarbons produced from this separations process. The invention may be utilized to separate heavy hydrocarbon feedstreams, such as whole crudes, topped crudes, synthetic crude blends, shale oils, oils derived from bitumen, oils derived from tar sands, atmospheric resids, vacuum resids, or other heavy hydrocarbon streams into enriched saturates content product streams. The invention provides an economical method for separating heavy hydrocarbon stream components by molecular species instead of molecular boiling points.

    摘要翻译: 本发明涉及一种用于分离重质烃流以利用超滤分离方法产生富集的饱和物含量物流的超滤方法。 然后可以在炼油和石油化学方法中进一步处理富集的饱和物质流,这将从该分离过程产生的较高含量的饱和烃受益。 本发明可以用于分离重烃进料流,例如整个原油,顶部原油,合成粗混合物,页岩油,来自沥青的油,源自焦油砂的油,常压渣油,减压渣油或其它重质烃流进入富集 饱和内容产品流。 本发明提供了一种经分子物质代替分子沸点分离重质烃流成分的经济方法。

    Controlling Prime Olefin Ratio In An Oxygenates-To-Olefins Reaction
    8.
    发明申请
    Controlling Prime Olefin Ratio In An Oxygenates-To-Olefins Reaction 审中-公开
    控制氧化烯到烯烃反应中的主要烯烃比例

    公开(公告)号:US20110054128A1

    公开(公告)日:2011-03-03

    申请号:US12837546

    申请日:2010-07-16

    IPC分类号: C08F2/00 C07C1/00

    摘要: Disclosed herein is a method of controlling production of olefins in an oxygenates-to-olefins reaction by combining in a reactor methanol and a molecular sieve, a AlPO or SAPO in certain embodiments, under conditions to produce at least ethylene and propylene having a first ethylene/propylene ratio; adding to the reactor a first amount of a C1 to C5 aldehyde; and withdrawing from the reactor a first amount of ethylene and propylene having a second ethylene/propylene ratio, wherein the second ethylene/propylene ratio is greater than the first ethylene/propylene ratio. The aldehyde is added at the same time, or co-feed, with the methanol under the same reaction conditions.

    摘要翻译: 本文公开了一种通过在反应器甲醇和分子筛,AlPO或SAPO中在某些实施方案中,在至少产生具有第一个乙烯的乙烯和丙烯的条件下混合来控制含氧化合物至烯烃反应中的烯烃的生产的方法 /丙烯比; 向反应器中加入第一量的C1至C5醛; 并从所述反应器中排出具有第二乙烯/丙烯比率的第一量乙烯和丙烯,其中所述第二乙烯/丙烯比率大于所述第一乙烯/丙烯比。 在相同的反应条件下,与甲醇同时加入醛或共同进料。

    Production of high purity ethylbenzene from non-extracted feed and non-extracted reformate useful therein
    9.
    发明授权
    Production of high purity ethylbenzene from non-extracted feed and non-extracted reformate useful therein 有权
    从非提取的原料和非提取的重整油中生产高纯度乙苯

    公开(公告)号:US07868219B2

    公开(公告)日:2011-01-11

    申请号:US12770490

    申请日:2010-04-29

    IPC分类号: C07C2/58

    CPC分类号: C07C2/66 C07C15/073

    摘要: A process for producing an ethylbenzene product having a purity of at least 99.50 percent based on the weight of ethylbenzene present in the product by the ethylation of the benzene present in non-extracted feed, e.g., non-extracted hydrocarbon composition. The non-extracted feed is substantially free of both C4− hydrocarbons and the C7+ aromatic hydrocarbons and contains benzene and benzene coboilers. The process is carried out in the liquid phase, in the presence of an acid-active catalyst containing MCM-22 family molecular sieve, and under specified conditions.

    摘要翻译: 通过非萃取进料例如非提取烃组合物中存在的苯的乙基化,生产纯度为至少99.50%的乙苯产物的方法,该纯乙苯存在于产物中的乙苯重量。 未提取的进料基本上不含C 4烃和C 7+芳烃,并且含有苯和苯共沸混合物。 该方法在液相中,在含有MCM-22族分子筛的酸活性催化剂存在下,并在规定的条件下进行。