Integrated Acid and Alcohol Production Process Having Flashing To Recover Acid Production Catalyst
    27.
    发明申请
    Integrated Acid and Alcohol Production Process Having Flashing To Recover Acid Production Catalyst 失效
    集成酸和酒精生产工艺闪烁以回收酸生产催化剂

    公开(公告)号:US20130116477A1

    公开(公告)日:2013-05-09

    申请号:US13292818

    申请日:2011-11-09

    IPC分类号: C07C27/04

    摘要: In one embodiment, the invention is to a process for producing ethanol, comprising the step of reacting carbon monoxide with at least one reactant in a reactor containing a reaction medium to produce a liquid reaction product comprising acetic acid. The process further comprises the step of separating the reaction product in a flasher into a liquid recycle stream and a vapor stream. The vapor stream is then distilled in a rectification tower and an overhead stream and an acetic acid stream are withdrawn therefrom, wherein the acetic acid is substantially free of halogen promoters. The process further comprises the step of hydrogenating acetic acid of the acetic acid stream in the presence of a second catalyst and under conditions effective to form a crude ethanol product comprising ethanol and water. Ethanol is recovered from the crude ethanol product.

    摘要翻译: 在一个实施方案中,本发明涉及一种生产乙醇的方法,其包括在含有反应介质的反应器中使一氧化碳与至少一种反应物反应以产生包含乙酸的液体反应产物的步骤。 该方法还包括将闪蒸器中的反应产物分离成液体循环物流和蒸汽流的步骤。 然后将蒸汽流在精馏塔中蒸馏,并从塔顶馏出物流中取出乙酸流,其中乙酸基本上不含卤素促进剂。 该方法还包括在第二催化剂存在下,在有效形成包含乙醇和水的粗乙醇产物的条件下,氢化乙酸流的乙酸的步骤。 从粗乙醇产物中回收乙醇。

    Integrated process for the production of vinyl acetate from acetic acid via ethylene
    29.
    发明授权
    Integrated process for the production of vinyl acetate from acetic acid via ethylene 有权
    通过乙烯从乙酸生产乙酸乙烯酯的综合方法

    公开(公告)号:US08071806B2

    公开(公告)日:2011-12-06

    申请号:US12959024

    申请日:2010-12-02

    IPC分类号: C07C67/02

    摘要: This invention provides an integrated two stage economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethylene either in a single reactor zone or in a dual rector zone wherein the intermediate hydrogenated products are either dehydrated and/or cracked to form ethylene. In a subsequent second stage so formed ethylene is reacted with molecular oxygen and acetic acid over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over a hydrogenation catalyst and subsequent reaction over a dehydration catalyst selectively produces ethylene, which is further mixed with acetic acid and molecular oxygen and reacted over a supported palladium/gold/potassium catalyst.

    摘要翻译: 本发明提供了一种用于在蒸气相中从乙酸生产乙酸乙烯酯单体(VAM)的综合两阶段经济方法。 首先,在氢化催化剂组合物中选择氢化乙酸,以在单个反应器区域或双重反应器区域中形成乙烯,其中中间氢化产物被脱水和/或裂化形成乙烯。 在随后的第二阶段中,如此形成的乙烯通过合适的催化剂与分子氧和乙酸反应以形成VAM。 在本发明的一个实施方案中,乙酸和氢气在氢化催化剂上的反应和随后的脱水催化剂反应选择性地产生乙烯,其进一步与乙酸和分子氧混合并在负载的钯/金/钾催化剂上反应。