INTEGRATED PROCESS FOR THE MANUFACTURE OF ALKENYL CARBOXYLATES
    1.
    发明公开
    INTEGRATED PROCESS FOR THE MANUFACTURE OF ALKENYL CARBOXYLATES 有权
    集成方法生产烯的

    公开(公告)号:EP1463709A1

    公开(公告)日:2004-10-06

    申请号:EP02805817.0

    申请日:2002-12-04

    摘要: An integrated process for the production of an alkenyl carboxylate, such as vinyl acetate which process comprises the steps of (a) contacting in an oxidation reaction zone a C2 to C4 alkane, such as ethane, a molecular oxygen-containing gas, optionally the corresponding alkene and optionally water, in the presence of a catalyst to produce a stream comprising alkene, carboxylic acid and water; (b) separating at least a portion of the stream from step (a) into a fraction comprising the alkene and a fraction comprising the carboxylic acid and water; (c) contacting in a second reaction zone at least a portion of said alkene fraction produced in step (b), a carboxylic acid and a molecular oxygen-containing gas, in the presence of a catalyst to produce a product stream comprising an alkenyl carboxylate, water and carboxylic acid; (d) separating at least a portion of the product stream from step (c) and at least a portion of the carboxylic acid and water fraction produced in step (b) by azeotropic distillation into an overhead fraction comprising the alkenyl carboxylate and a base fraction comprising the carboxylic acid; (e) recovering the alkenyl carboxylate from the overhead fraction separated in step (d).

    INTEGRATED PROCESS FOR THE MANUFACTURE OF ALKENYL CARBOXYLATES
    4.
    发明授权
    INTEGRATED PROCESS FOR THE MANUFACTURE OF ALKENYL CARBOXYLATES 有权
    集成方法生产烯的

    公开(公告)号:EP1463709B1

    公开(公告)日:2009-08-26

    申请号:EP02805817.0

    申请日:2002-12-04

    摘要: An integrated process for the production of an alkenyl carboxylate, such as vinyl acetate which process comprises the steps of (a) contacting in an oxidation reaction zone a C2 to C4 alkane, such as ethane, a molecular oxygen-containing gas, optionally the corresponding alkene and optionally water, in the presence of a catalyst to produce a stream comprising alkene, carboxylic acid and water; (b) separating at least a portion of the stream from step (a) into a fraction comprising the alkene and a fraction comprising the carboxylic acid and water; (c) contacting in a second reaction zone at least a portion of said alkene fraction produced in step (b), a carboxylic acid and a molecular oxygen-containing gas, in the presence of a catalyst to produce a product stream comprising an alkenyl carboxylate, water and carboxylic acid; (d) separating at least a portion of the product stream from step (c) and at least a portion of the carboxylic acid and water fraction produced in step (b) by azeotropic distillation into an overhead fraction comprising the alkenyl carboxylate and a base fraction comprising the carboxylic acid; (e) recovering the alkenyl carboxylate from the overhead fraction separated in step (d).

    Oxidation process for the production of alkenes and carboxylic acids
    5.
    发明公开
    Oxidation process for the production of alkenes and carboxylic acids 无效
    用于生产烯烃和羧酸的氧化方法

    公开(公告)号:EP1201630A2

    公开(公告)日:2002-05-02

    申请号:EP01308283.9

    申请日:2001-09-28

    摘要: A process for the oxidation of a C 2 to C 4 alkane to produce the corresponding alkene and carboxylic acid which process comprises contacting in an oxidation reaction zone, said alkane, molecular oxygen-containing gas, and the corresponding alkene and optionally, water, in the presence of at least one catalyst active for the oxidation of the alkane to the corresponding alkene and carboxylic acid, to produce a product stream comprising alkene, carboxylic acid and water, wherein in said process the molar ratio of alkene to carboxylic acid produced in said oxidation reaction zone is adjusted or maintained at a pre-determined value by controlling the concentrations of the alkene and optional water in said oxidation reaction zone and optionally by also controlling one or more of the pressure, temperature and residence time of the oxidation reaction zone. Such an oxidation process may be used in an integrated process, such as for the manufacture of vinyl acetate or ethyl acetate.

    摘要翻译: 一种将C2-C4烷烃氧化成相应的烯烃和羧酸的方法,该方法包括在氧化反应区中使所述烷烃,含分子氧气体和相应的烯烃和任选的水在存在 的至少一种对烷烃氧化为相应的烯烃和羧酸有活性的催化剂,以产生包含烯烃,羧酸和水的产物流,其中在所述方法中,在所述氧化反应中产生的烯烃与羧酸的摩尔比 通过控制所述氧化反应区中烯烃和任选水的浓度并且任选通过还控制氧化反应区的压力,温度和停留时间中的一个或多个,将所述区域调节或维持在预定值。 这样的氧化过程可以用于综合过程,例如用于制造乙酸乙烯酯或乙酸乙酯。