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    PROCESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE
    3.
    发明公开
    PROCESS FOR THE PRODUCTION OF HYDROGEN PEROXIDE 有权
    生产过氧化氢的方法

    公开(公告)号：EP1307399A1

    公开(公告)日：2003-05-07

    申请号：EP01969572.5

    申请日：2001-08-03

    申请人： Polimeri Europa S.p.A. ,  ENI S.p.A.

    发明人： PAPARATTO, Giuseppe ,  RIVETTI, Franco ,  ANDRIGO, Pietro ,  DE ALBERTI, Giordano ,  ROMANO, Ugo

    IPC分类号： C01B15/029 ,  C01B15/013

    CPC分类号： C01B15/013 ,  C01B15/029

    摘要： Process for the production of concentrated aqueous solutions of hydrogen peroxide, comprising the following steps: (a) feeding to a reactor containing a catalyst based on palladium and platinum, heterogeneous and maintained in dispersion in a liquid reaction medium: (i) a liquid stream consisting of an alcohol or a mixture of C1-C3 alcohols or a mixture of said alcohols with water containing at least 50% by weight of alcohol, also containing an acid promoter and a halogenated promoter, the alcohol and optionally all or part of the water contained in the stream being recycled from the subsequent phase d); (ii) a gaseous stream containing hydrogen, oxygen and an inert gas, characterized in that the concentration of the hydrogen is less than 4.5 % by volume and the concentration of the oxygen is less than 21 % by volume, the complement to 100 being an inert gas; (b) removing from the reactor: (iii) a liquid stream consisting of stream (i) and also containing the hydrogen peroxide and water produced by the reaction, characterized in that the concentration of hydrogen peroxide ranges from 2 % to 10 % by weight; and (iv) a gaseous stream essentially consisting of non-reacted hydrogen and oxygen and the inert gas, (c) optionally adding to (iii) water in such a quantity so that its content is at least equal to that of the final aqueous solution of hydrogen peroxide; (d) sending the stream deriving from (c) to a system consisting of one or more evaporators or distillation columns from which the following are removed: (v) one or more streams containing all the alcohol and possibly water, which are recycled to (a); (vi) a concentrated aqueous solution of H2O2 at a concentration ranging from 15 to 60 % by weight; (vii) optionally a stream containing the water fed in excess in (c).

    摘要翻译： 包括以下步骤：（a）加入到含有基于钯和铂的催化剂的反应器中，所述催化剂是非均相的并保持分散在液体反应介质中：（i）液体流 由醇或C1-C3醇的混合物或所述醇与含有至少50重量％醇的水的混合物组成，还含有酸促进剂和卤化促进剂，所述醇和任选的全部或部分水 包含在从后续阶段d）再循环的物流中; （ii）含有氢气，氧气和惰性气体的气态物流，其特征在于氢气的浓度小于4.5体积％，氧气的浓度小于21体积％，100的补充物为 惰性气体; （b）从反应器中除去：（iii）由物流（i）组成并且还含有过氧化氢和反应产生的水的液体物流，其特征在于过氧化氢的浓度为2重量％至10重量％ ; 和（iv）主要由未反应的氢气和氧气和惰性气体组成的气流，（c）任选地向（iii）水中加入一定量的水以使其含量至少等于最终水溶液的含量 的过氧化氢; （d）将由（c）得到的料流输送到由一个或多个蒸发器或蒸馏塔组成的系统，从中除去以下物质：（v）含有所有醇和可能的水的一个或多个料流， 一个）; （vi）浓度范围为15至60重量％的H 2 O 2浓缩水溶液; （vii）任选地包含在（c）中过量供给的水的流。