PROCESS FOR IMPROVING THE SELECTIVITY OF AN EO CATALYST
    1.
    发明申请
    PROCESS FOR IMPROVING THE SELECTIVITY OF AN EO CATALYST 有权
    改进EO催化剂选择性的方法

    公开(公告)号:US20120309992A1

    公开(公告)日:2012-12-06

    申请号:US13310246

    申请日:2011-12-02

    CPC classification number: C07D301/10 B01J23/96 B01J38/02 Y02P20/142 Y02P20/584

    Abstract: The present invention relates to a process for improving the overall selectivity of an EO process for converting ethylene to ethylene oxide utilizing a highly selective EO silver catalyst containing a rhenium promoter wherein following normal operation a hard strip of the chloride on the surface of the catalyst is conducted in order to remove a portion of the chlorides on the surface of the catalyst. Following the hard strip, the catalyst is optionally re-optimized. Surprisingly, it has been found that the selectivity of the catalyst following the hard strip may be substantially higher than the selectivity prior to the hard strip.

    Abstract translation: 本发明涉及使用含有铼助催化剂的高度选择性的EO银催化剂来改善EO转化成环氧乙烷的EO方法的整体选择性的方法,其中在正常操作之后,催化剂表面上的氯化物的硬条是 进行以除去催化剂表面上的一部分氯化物。 在硬条之后,任选地重新优化催化剂。 令人惊奇的是,已经发现,跟随硬带的催化剂的选择性可能显着高于硬条之前的选择性。

    Process and systems for the epoxidation of an olefin
    2.
    发明授权
    Process and systems for the epoxidation of an olefin 失效
    用于烯烃环氧化的方法和系统

    公开(公告)号:US07657332B2

    公开(公告)日:2010-02-02

    申请号:US11670338

    申请日:2007-02-01

    CPC classification number: C07D301/10

    Abstract: A process for the epoxidation of an olefin, which process comprises reacting a feed comprising the olefin, oxygen and a reaction modifier in the presence of a highly selective silver-based catalyst at a reaction temperature T, and with the reaction modifier being present in a relative quantity Q which is the ratio of an effective molar quantity of active species of the reaction modifier present in the feed to an effective molar quantity of hydrocarbons present in the feed, and which process comprises the steps of: operating at a first operating phase wherein the value of T is T1 and the value of Q is Q1, and subsequently operating at a second operating phase at a reaction temperature which is different from the reaction temperature employed in the first operating phase, such that the value of T is T2 and the value of Q is substantially Q2, whereby Q2 is determined by calculation and Q2 is defined by the formula Q2=Q1+B(T2−T1), wherein B denotes a constant factor which is greater than 0; a reaction system suitable for performing the process for the epoxidation of an olefin; a computer program product which comprises a computer readable program recorded on a computer readable medium, suitable for instructing a data processing system of a computer system to execute calculations for the process for the epoxidation of an olefin; and a computer system which comprises the computer program product and a data processing system.

    Abstract translation: 一种烯烃环氧化方法,该方法包括在高反应温度T下,在高度选择性的银基催化剂存在下使包含烯烃,氧和反应调节剂的进料反应,并且反应改性剂存在于 相对量Q是进料中存在的反应改性剂的活性物质的有效摩尔量与进料中存在的有效摩尔量的烃的比例,该方法包括以下步骤:在第一操作阶段 T的值为T1,Q值为Q1,随后在与第一运行阶段中使用的反应温度不同的反应温度下在第二运行阶段运行,使得T的值为T2, Q值基本上为Q2,由此通过计算确定Q2,Q2由公式Q2 = Q1 + B(T2-T1)定义,其中B表示大于0的常数因子 ; 适于进行烯烃环氧化方法的反应体系; 计算机程序产品,其包括记录在计算机可读介质上的计算机可读程序,适于指示计算机系统的数据处理系统执行烯烃的环氧化方法的计算; 以及包括计算机程序产品和数据处理系统的计算机系统。

    Process and systems for the epoxidation of an olefin
    3.
    发明授权
    Process and systems for the epoxidation of an olefin 有权
    用于烯烃环氧化的方法和系统

    公开(公告)号:US07193094B2

    公开(公告)日:2007-03-20

    申请号:US10404829

    申请日:2003-04-01

    CPC classification number: C07D301/10

    Abstract: A process for the epoxidation of an olefin, which process comprises reacting a feed comprising the olefin, oxygen and a reaction modifier in the presence of a highly selective silver-based catalyst at a reaction temperature T, and with the reaction modifier being present in a relative quantity Q which is the ratio of an effective molar quantity of active species of the reaction modifier present in the feed to an effective molar quantity of hydrocarbons present in the feed, and which process comprises the steps of: operating at a first operating phase wherein the value of T is T1 and the value of Q is Q1, and subsequently operating at a second operating phase at a reaction temperature which is different from the reaction temperature employed in the first operating phase, such that the value of T is T2 and the value of Q is substantially Q2, whereby Q2 is determined by calculation and Q2 is defined by the formula Q2=Q1+B(T2−T1), wherein B denotes a constant factor which is greater than 0; a reaction system suitable for performing the process for the epoxidation of an olefin; a computer program product which comprises a computer readable program recorded on a computer readable medium, suitable for instructing a data processing system of a computer system to execute calculations for the process for the epoxidation of an olefin; and a computer system which comprises the computer program product and a data processing system.

    Abstract translation: 一种烯烃环氧化方法,该方法包括在高反应温度T下在高度选择性的银基催化剂存在下使包含烯烃,氧和反应调节剂的进料反应,并且反应改性剂存在于 相对量Q是进料中存在的反应改性剂的活性物质的有效摩尔量与进料中存在的有效摩尔量的烃的比例,该方法包括以下步骤:在第一操作阶段 T的值为T 1 N且Q的值为Q 1 N 1,随后在与所用反应温度不同的反应温度下在第二操作阶段 在第一操作阶段中,使得T的值为T 2,并且Q的值基本上为Q 2,其中Q 2是 通过计算确定,并且Q <2>由公式<β在线定义 -formulae description =“In-line Formulas”end =“lead”?> Q&lt; 2&gt; = Q 1&lt; 1&gt; + B(T 2&lt; 2&gt; <?in-line-formula description =“In-line formula”end =“tail”?>其中B表示大于0的常数因子; 适于进行烯烃环氧化方法的反应体系; 计算机程序产品,其包括记录在计算机可读介质上的计算机可读程序,适于指示计算机系统的数据处理系统执行烯烃的环氧化方法的计算; 以及包括计算机程序产品和数据处理系统的计算机系统。

    Process for improving the selectivity of an EO catalyst
    4.
    发明授权
    Process for improving the selectivity of an EO catalyst 有权
    提高EO催化剂选择性的方法

    公开(公告)号:US09174928B2

    公开(公告)日:2015-11-03

    申请号:US13456774

    申请日:2012-04-26

    CPC classification number: C07C213/04 C07D301/12 Y02P20/52 C07C215/08

    Abstract: Processes for the epoxidation of ethylene are provided in which, following start-up, an epoxidation catalyst is contacted with a feed comprising ethylene, oxygen, carbon dioxide in an amount below 2.0 vol. %, and a chloride moderator to achieve a desired work rate at a first operating temperature T1. The composition of the feed is subsequently adjusted (e.g., by decreasing the ethylene concentration, decreasing the oxygen concentration, increasing the carbon dioxide concentration and/or adjusting the concentration of the chloride moderator) so as to increase the first operating temperature T1 to a second operating temperature T2 while maintaining the desired work rate. As the catalyst activity declines, the composition of the feed is further adjusted so as to maintain the desired work rate at the second operating temperature T2.

    Abstract translation: 提供了用于环氧化乙烯的方法,其中在启动之后,将环氧化催化剂与包含乙烯,氧,二氧化碳的进料接触,其量低于2.0体积%。 %和氯化物调节剂,以在第一工作温度T1达到所需的加工速率。 随后调整进料的组成(例如,通过降低乙烯浓度,降低氧浓度,增加二氧化碳浓度和/或调节氯化物调节剂的浓度),以便将第一操作温度T1增加至第二 工作温度T2,同时保持所需的工作速率。 随着催化剂活性的降低,进料的组成进一步调节,以便在第二工作温度T2保持所需的加工速率。

    PROCESS FOR IMPROVING THE SELECTIVITY OF AN EO CATALYST
    7.
    发明申请
    PROCESS FOR IMPROVING THE SELECTIVITY OF AN EO CATALYST 有权
    改进EO催化剂选择性的方法

    公开(公告)号:US20120277447A1

    公开(公告)日:2012-11-01

    申请号:US13456774

    申请日:2012-04-26

    CPC classification number: C07C213/04 C07D301/12 Y02P20/52 C07C215/08

    Abstract: The present invention relates to a process for improving the selectivity of an EO process utilizing a highly selective EO catalyst. In particular, the present invention is an improvement in the initial operation of a process for manufacturing ethylene oxide by contacting ethylene, oxygen, a chloride moderator and a hydrocarbon co-moderator with a high selectivity silver-containing catalyst at a concentration of carbon dioxide of less than about 2 mole percent, wherein the initial operating temperature is determined by optimization of such initial operating temperature at a level higher than the normal low initial operating temperature that is typically selected to obtain a longer operating cycle.

    Abstract translation: 本发明涉及一种利用高选择性EO催化剂改进EO工艺的选择性的方法。 特别地,本发明是通过使乙烯,氧气,氯化物缓和剂和烃共调节剂与含有高选择性含银催化剂的二氧化碳浓度接触来制备环氧乙烷的方法的初始操作的改进, 小于约2摩尔%,其中初始操作温度通过将这种初始操作温度优化为高于通常选择以获得较长操作循环的正常低初始操作温度的水平来确定。

    Reactor System and Process for the Manufacture of Ethylene Oxide
    9.
    发明申请
    Reactor System and Process for the Manufacture of Ethylene Oxide 审中-公开
    用于制造环氧乙烷的反应器系统和工艺

    公开(公告)号:US20090234144A1

    公开(公告)日:2009-09-17

    申请号:US11886800

    申请日:2006-03-20

    Abstract: A reactor system for the epoxidation of ethylene, which reactor system comprises an elongated tube having an internal tube diameter of more than 40 mm, wherein contained is a catalyst bed of catalyst particles comprising silver and a promoter component deposited on a carrier, which promoter component comprises an element selected from rhenium, tungsten, molybdenum and chromium; a process for the epoxidation of ethylene comprising reacting ethylene with oxygen in the presence of the catalyst bed contained in the reactor system; and a method of preparing ethylene glycol, an ethylene glycol ether or an ethanol amine comprising obtaining ethylene oxide by the process for the epoxidation of ethylene, and converting the ethylene oxide into ethylene glycol, the ethylene glycol ether, or the ethanol amine. Preferably, the internal tube diameter is at least 45 mm.

    Abstract translation: 一种用于乙烯环氧化的反应器系统,该反应器系统包括内管直径大于40mm的细长管,其中包含催化剂床的催化剂床,所述催化剂颗粒包含银和沉积在载体上的助催化剂组分,该促进剂组分 包括选自铼,钨,钼和铬的元素; 一种乙烯环氧化方法,包括在反应器系统中包含的催化剂床存在下使乙烯与氧反应; 以及制备乙二醇,乙二醇醚或乙醇胺的方法,包括通过乙烯环氧化方法获得环氧乙烷,并将环氧乙烷转化为乙二醇,乙二醇醚或乙醇胺。 优选地,内管直径至少为45mm。

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