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    Methods and devices for controlling hydrocarbon oxidations to respective acids by adjusting the solvent to hydrocarbon ratio
    3.
    发明授权
    Methods and devices for controlling hydrocarbon oxidations to respective acids by adjusting the solvent to hydrocarbon ratio 失效
    通过调节溶剂与烃的比例来控制各种酸的烃氧化的方法和装置

    公开(公告)号：US6037491A

    公开(公告)日：2000-03-14

    申请号：US900323

    申请日：1997-07-25

    申请人： Eustathios Vassiliou ,  Mark W. Dassel ,  Sharon M. Aldrich ,  Ader M. Rostami ,  David C. DeCoster

    发明人： Eustathios Vassiliou ,  Mark W. Dassel ,  Sharon M. Aldrich ,  Ader M. Rostami ,  David C. DeCoster

    IPC分类号： B01J10/00 ,  B01J19/00 ,  B01J19/18 ,  C07B61/00 ,  C07C51/215 ,  C07C51/31 ,  C07C55/14 ,  D01F6/60 ,  D01F6/62 ,  D01F6/74 ,  C07C51/16

    CPC分类号： D01F6/74 ,  B01J19/0006 ,  C07C51/215 ,  C07C51/313 ,  D01F6/60 ,  D01F6/62

    摘要： This invention relates to methods and devices of preparing acids, such as adipic acid for example, by oxidizing a hydrocarbon, such as cyclohexane for example, with a gas containing an oxidant, preferably oxygen. A respective hydrocarbon is reacted, preferably at a steady state, with a gaseous oxidant to form an acid in a liquid mixture which preferably contains a solvent, a catalyst, water, and an initiator. The ratio of solvent to hydrocarbon may be controlled in a manner to maintain in the reaction zone maximum reaction rate and/or reactivity, or reaction rate and/or reactivity within a desired range, or reaction rate and/or reactivity directed toward a desired range. In addition, the ratio of solvent to hydrocarbon is controlled in a manner to maintain in the reaction zone substantially maximum selectivity and/or yield, or selectivity and/or yield within a desired range, or selectivity and/or yield directed toward a desired range.

    摘要翻译： 本发明涉及例如通过用含有氧化剂，优选氧气的气体氧化烃例如环己烷来制备酸例如己二酸的方法和装置。 相应的烃优选在稳定状态下与气态氧化剂反应，以在优选含有溶剂，催化剂，水和引发剂的液体混合物中形成酸。 可以以保持反应区域中最大反应速率和/或反应性或在所需范围内的反应速率和/或反应性，或反应速率和/或反应性达到所需范围的方式来控制溶剂与烃的比例 。 此外，以保持反应区域中基本上最大选择性和/或产率，或期望范围内的选择性和/或产率，或者指向所需范围的选择性和/或屈服的方式来控制溶剂与烃的比例 。

    Process of separating catalyst from oxidation mixtures
    6.
    发明授权
    Process of separating catalyst from oxidation mixtures 失效
    从氧化混合物中分离催化剂的方法

    公开(公告)号：US6129875A

    公开(公告)日：2000-10-10

    申请号：US245156

    申请日：1999-02-04

    申请人： Mark W. Dassel ,  Ader M. Rostami ,  Douglas J. Dudgeon ,  David C. DeCoster ,  Eustathios Vassiliou

    发明人： Mark W. Dassel ,  Ader M. Rostami ,  Douglas J. Dudgeon ,  David C. DeCoster ,  Eustathios Vassiliou

    IPC分类号： C07C51/43 ,  C07C51/16 ,  C07C51/31 ,  C07C55/02 ,  C07C55/14 ,  D01D1/02 ,  D01D5/08 ,  D01F13/00

    CPC分类号： C07C51/313

    摘要： This invention relates to methods for controlling the oxidation of hydrocarbons to dibasic acids, in the presence of a catalyst and a monobasic acid, by removing the catalyst from the reaction mixture, outside the oxidation zone, after the oxidation has taken place at least partially. Initially, the catalyst is partially precipitated and removed by reducing the water level in the reaction mixture and/or subjecting the reaction mixture to a temperature, at which or over which catalyst precipitates. After the initial partial precipitation of the catalyst, the remaining catalyst is subjected to a thermal treatment, during which at least part of the monobasic acid is removed leaving behind molten dibasic acids, in which, at least a major part of the remaining catalyst is precipitated, and it is removed. A minor part of remaining catalyst is removed by methods, which include but are not limited to ion exchange, precipitation with a base or appropriate salt, and electrodialysis. The precipitated catalyst in the three removal stages may be recycled in miscellaneous ways. The dibasic acid(s) may be removed at least partially before or after any catalyst precipitation stage.

    摘要翻译： 本发明涉及在催化剂和一元酸的存在下，通过在至少部分氧化发生氧化区之后从反应混合物外部除去催化剂来控制烃类二元酸的氧化的方法。 最初，通过降低反应混合物中的水位和/或使反应混合物达到催化剂沉淀的温度，部分沉淀和除去催化剂。 在催化剂的初始部分沉淀之后，对剩余的催化剂进行热处理，其中除去至少部分一元酸，留下熔融二元酸，其中至少大部分剩余的催化剂沉淀 ，并被删除。 通过方法除去剩余催化剂的一小部分，其包括但不限于离子交换，用碱或适当的盐沉淀和电渗析。 三个去除阶段中的沉淀催化剂可以以各种方式回收。 在任何催化剂沉淀阶段之前或之后，可以至少部分去除二元酸。