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    • 3. 依法登记的发明
    • Regeneration method of working solution
    • 工作液再生方法
    • USH1787H
    • 1999-02-02
    • US829696
    • 1997-03-26
    • Kazuharu OgasawaraTomio KatoKazuyuki MinatoKenji KatoMakoto Sumitani
    • Kazuharu OgasawaraTomio KatoKazuyuki MinatoKenji KatoMakoto Sumitani
    • C01B15/023C07C50/18
    • C01B15/023
    • A regeneration method of a working solution is herein disclosed in which various by-products which do not participate in the production of hydrogen peroxide and which are present in the working solution in a hydrogen peroxide production process utilizing an anthraquinone method can efficiently be converted into anthraquinones effective as reaction media for the production of hydrogen peroxide.The present invention is concerned with (1) a regeneration method of a working solution wherein at least a part of the unreduced working solution is brought into contact with a catalyst mainly comprising a .gamma.-alumina at a temperature of 40 to 150.degree. C., and (2) another regeneration method of a working solution wherein the working solution is brought into contact with a catalyst mainly comprising a .gamma.-alumina at a temperature of 20 to 150.degree. C. under conditions that a concentration h (mol/liter) of the alkyltetrahydroanthrahydroquinones in the working solution before the catalytic treatment meets the equation(0.0018.times.t-0.0285).times.h
    • 本文公开了一种工作溶液的再生方法,其中不参与过氧化氢生产的各种副产物在使用蒽醌方法的过氧化氢生产过程中存在于工作溶液中的各种副产物可有效地转化为蒽醌 作为生产过氧化氢的反应介质有效。 本发明涉及(1)一种工作溶液的再生方法,其中至少一部分未还原的工作溶液与主要包含γ-氧化铝的催化剂在40〜150℃的温度下接触, 和(2)工作溶液的另一种再生方法,其中使工作溶液与主要包含γ-氧化铝的催化剂在20至150℃的温度下接触,在浓度h(mol / l) 在催化处理之前的工作溶液中的烷基四氢蒽醌符合方程(0.0018xt-0.0285)xh <0.05,其中t为处理温度(℃),将工作溶液中的烷基四氢加成蒽转化为烷基四氢蒽醌。
    • 4. 发明授权
    • Process for producing hydrogen peroxide
    • 生产过氧化氢的方法
    • US5399333A
    • 1995-03-21
    • US162305
    • 1993-12-06
    • Tomio KatoYukio IshiuchiHiroshi TakamiyaKazuharu OgasawaraKazuyuki Minato
    • Tomio KatoYukio IshiuchiHiroshi TakamiyaKazuharu OgasawaraKazuyuki Minato
    • C01B15/023
    • C01B15/023
    • A process for producing hydrogen peroxide by subjecting a working solution containing anthraquinones as the reaction medium, to reduction and oxidation alternately, which process is characterized in that (1) the anthraquinones as the reaction medium contained in the working solution are a mixture of an alkyl-substituted anthraquinone and an alkyl-substituted tetrahydroanthraquinone, (2) in the reduction step, the total amount of the alkyl-substituted tetrahydroanthraquinone in the working solution and part or the total amount of the alkyl-substituted anthraquinone in the working solution are reduced, and (3) in the working solution after the reduction step, the content of the alkyl-substituted anthrahydroquinone formed is kept higher than the content of the alkyl-substituted tetrahydroanthrahydroquinone formed.
    • 通过对含有蒽醌作为反应介质的工作溶液进行交替的还原和氧化而生产过氧化氢的方法,其特征在于:(1)工作溶液中含有的作为反应介质的蒽醌是烷基 取代的蒽醌和烷基取代的四氢蒽醌,(2)在还原步骤中,工作溶液中烷基取代的四氢蒽醌的总量和工作溶液中烷基取代的蒽醌的总量以及总量减少, 和(3)在还原步骤后的工作溶液中,形成的烷基取代的蒽醌的含量保持高于形成的烷基取代的四氢蒽氢醌的含量。