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: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。

    SYSTEM AND METHODS FOR CONTINUOUS, ONLINE MONITORING OF A CHEMICAL PLANT OR REFINERY
    4.
    发明申请
    SYSTEM AND METHODS FOR CONTINUOUS, ONLINE MONITORING OF A CHEMICAL PLANT OR REFINERY 审中-公开
    连续监测化工厂或炼油厂的系统及方法

    公开(公告)号:US20090149981A1

    公开(公告)日:2009-06-11

    申请号:US12190467

    申请日:2008-08-12

    Abstract: A near real-time system and method for continuous online monitoring of a plurality of operations in a continuous chemical process facility is described. The method of monitoring the operations is based on a multivariate statistical model developed using off-line, selected process-specific historical process data. Such a model is used by an online monitoring system to monitor the continual operation of a chemical manufacturing facility or refinery in real-time from a remote location. Such real-time monitoring allows for determination of whether one or more of the plurality of operations are operating within their normal operational parameters. This real-time, continuous monitoring system can further be used to predict impending failures or trouble-spots within the continuous production process, or to minimize catastrophic process failures which may occur in a continuous chemical manufacturing process. Process variables, or “tags”, that are most likely related to predicted process failures can be identified by the model system, such that appropriate control actions can be taken to prevent an actual process failure occurrence, which can lead to costly production down times.

    Abstract translation: 描述了用于在连续化学处理设备中连续在线监测多个操作的近实时系统和方法。 监测操作的方法是基于使用离线,选定的过程特定历史过程数据开发的多变量统计模型。 这种模型由在线监测系统用于从远程位置实时监测化学制造设施或炼油厂的持续运行。 这种实时监视允许确定多个操作中的一个或多个是否在其正常操作参数内操作。 这种实时,连续的监控系统可以进一步用于预测连续生产过程中的即将发生的故障或故障点,或最小化连续化学制造过程中可能发生的灾难性过程故障。 最可能与预测过程故障相关的过程变量或“变量”可以由模型系统识别,从而可以采取适当的控制动作来防止实际的过程失败发生,这可能导致昂贵的生产停机时间。

    PROCESS FOR IMPROVING THE SELECTIVITY OF AN EO CATALYST
    8.
    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 FOR IMPROVING THE SELECTIVITY OF AN EO CATALYST
    9.
    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:US20120149926A1

    公开(公告)日:2012-06-14

    申请号:US13310273

    申请日:2011-12-02

    CPC classification number: C07D303/04 Y02P20/142

    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 chloride 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. The chloride strip involves the addition of certain saturated hydrocarbons to the feed. Following the chloride strip, the catalyst is optionally re-optimized.

    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转化为环氧乙烷的EO方法的总体选择性的方法,其中在正常操作之后,催化剂表面上氯化物的氯化物条是 进行以除去催化剂表面上的一部分氯化物。 氯化物条包括向进料中加入某些饱和烃。 在氯化带之后,任选地重新优化催化剂。

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