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    Process for improving the stability and/or preventing the deactivation of the catalyst during the manufacture of acetic acid and/or of methyl acetate
    2.
    发明授权
    Process for improving the stability and/or preventing the deactivation of the catalyst during the manufacture of acetic acid and/or of methyl acetate 有权
    在乙酸和/或乙酸甲酯的制造期间提高稳定性和/或防止催化剂失活的方法

    公开(公告)号：US06774083B2

    公开(公告)日：2004-08-10

    申请号：US10426803

    申请日：2003-05-01

    申请人： Daniel Thiebaut ,  Carl Patois ,  Lise Layeillon ,  Daniel Marchand

    发明人： Daniel Thiebaut ,  Carl Patois ,  Lise Layeillon ,  Daniel Marchand

    IPC分类号： B01J2104

    CPC分类号： C07C51/353 ,  C07C51/12 ,  C07C67/36 ,  Y02P20/127 ,  Y02P20/584 ,  Y10S502/50 ,  C07C53/08 ,  C07C69/14

    摘要： A process for improving the stability and/or preventing the deactivation of catalyst in processes of continuous manufacture of acetic acid and/or methyl acetate includes a first, reaction step wherein at least one methyl formate isomerization reaction is carried out in a liquid phase reaction medium, in the presence of carbon monoxide and of a catalytic system including at least one halogenated promoter and at least one iridium-based catalytic compound, and, a second, flash step in which partial vaporization of a reaction medium originating from the first step is carried out in a flash separator. In a non-vaporized liquid fraction resulting from the partial vaporization in the flash separator, an overall content of formic acid and methyl formate is maintained at least equal to 1% by weight of said non-vaporized liquid fraction.

    摘要翻译： 在连续制造乙酸和/或乙酸甲酯的方法中改进稳定性和/或防止催化剂失活的方法包括第一反应步骤，其中至少一种甲酸甲酯异构化反应在液相反应介质中进行 在一氧化碳和包括至少一种卤化促进剂和至少一种铱基催化剂的催化体系的存在下，以及第二个闪蒸步骤，其中进行源自第一步骤的反应介质的部分蒸发 在闪光分离器中。 在由闪蒸分离器中的部分汽化产生的非汽化液体馏分中，甲酸和甲酸甲酯的总含量保持至少等于所述非汽化液体馏分的1重量％。

    Process for improving the stability and/or preventing the deactivation of the catalyst during the manufacture of acetic acid and/or of methyl acetate
    3.
    发明授权
    Process for improving the stability and/or preventing the deactivation of the catalyst during the manufacture of acetic acid and/or of methyl acetate 有权
    在乙酸和/或乙酸甲酯的制造期间提高稳定性和/或防止催化剂失活的方法

    公开(公告)号：US06617472B1

    公开(公告)日：2003-09-09

    申请号：US09926755

    申请日：2001-12-13

    申请人： Daniel Thiebaut ,  Carl Patois ,  Lise Layeillon ,  Daniel Marchand

    发明人： Daniel Thiebaut ,  Carl Patois ,  Lise Layeillon ,  Daniel Marchand

    IPC分类号： C07C6736

    CPC分类号： C07C51/353 ,  C07C51/12 ,  C07C67/36 ,  Y02P20/127 ,  Y02P20/584 ,  Y10S502/50 ,  C07C53/08 ,  C07C69/14

    摘要： The present invention relates to process for improving the stability and/or preventing the deactivation of the catalyst in processes of manufacture of acetic acid and/or of methyl acetate according to which processes, in a first step, referred to as the reaction step, at least one methyl formate isomerization reaction is carried out in liquid phase, in the presence of carbon monoxide and of a catalytic system comprising at least one halogenated promoter and at least one iridium-based catalytic compound, and, in a second step, referred to as the flash step, the partial vaporization of the reaction medium originating from the first step is carried out in a separator referred to as the flash separator, characterized in that it consists in maintaining an overall content of formic acid and of methyl formate at least equal to 1% by weight of said liquid fraction, preferably between 1 and 50%, preferably between 1 and 30%, by weight with respect to said liquid fraction, in the non-vaporized liquid fraction originating from said flash separator. The invention also relates to a complete process of manufacture acetic acid and/or of methyl acetate which incorporates this improvement. The invention enables preparing acetic acid and/or methyl acetate with an increased stability of the catalytic system, even in the presence of contents of water which are particularly low, and of particularly low carbon monoxide pressures in the reaction zone, and is applied more particularly to processes of manufacture of acetic acid and/or of methyl acetate in which process the first step further comprises a methanol carbonylation reaction.

    摘要翻译： 本发明涉及在制备乙酸和/或乙酸甲酯的方法中提高稳定性和/或防止催化剂失活的方法，根据该方法，在第一步骤中称为反应步骤，在 在一氧化碳和包含至少一种卤化促进剂和至少一种铱基催化化合物的催化体系的存在下，在液相中至少一种甲酸甲酯异构化反应进行，在第二步中，称为 闪蒸步骤，来自第一步骤的反应介质的部分蒸发在称为快速分离器的分离器中进行，其特征在于其保持甲酸和甲酸甲酯的总含量至少等于 所述液体馏分的1重量％，优选1至50重量％，优选1至30重量％，相对于所述液体馏分，在未汽化的l 来自所述闪蒸分离器的鱿鱼级分。 本发明还涉及制备乙酸和/或乙酸甲酯的完整方法，其包括该改进。 本发明能够制备具有提高的催化体系稳定性的乙酸和/或乙酸甲酯，即使在特别低的水含量和反应区中一氧化碳压力特别低的情况下，更具体地使用 涉及乙酸和/或乙酸甲酯的制备方法，其中第一步还包括甲醇羰基化反应。