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    Process for the production of hydrogen peroxide
    2.
    发明授权
    Process for the production of hydrogen peroxide 失效
    生产过氧化氢的方法

    公开(公告)号：US3699217A

    公开(公告)日：1972-10-17

    申请号：US3699217D

    申请日：1970-03-23

    Applicant: DEGUSSA

    Inventor： SCHREYER GERD ,  WEIBERG OTTO ,  WEIGERT WOLFGANG

    IPC: C01B15/023 ,  C01B15/02 ,  C07C49/68

    CPC classification number: C01B15/023

    Abstract: Esters of trialkyl acetic acids; preferably pivalic acid, with higher alkanols, glycols, phenols or cycloalkanols are employed as solvents for the reaction carriers in the anthraquinone process for preparing hydrogen peroxide.

    Abstract translation: 三烷基乙酸的酯; 优选新戊酸与较高级的链烷醇，二醇，酚或环烷醇用作用于制备过氧化氢的蒽醌方法中的反应载体的溶剂。

    5.
    发明专利
    未知

    公开(公告)号：FI62076C

    公开(公告)日：1982-11-10

    申请号：FI761184

    申请日：1976-04-28

    Applicant: BAYER AG ,  DEGUSSA

    Inventor： WALDMANN HELMUT ,  SEIFERT HERMANN ,  SCHWERDTEL WULF ,  SWODENK WOLFGANG ,  PRESCHER GUENTER ,  SCHREYER GERD ,  WEIBERG OTTO ,  WIRTHWEIN ROLF

    IPC: C07C409/24 ,  C07D301/14 ,  C07C178/00

    Abstract: Process for continuous production of propylene oxide (FIG. 1) from propylene and aqueous hydrogen peroxide. The aqueous hydrogen peroxide is first reacted with propionic acid in the presence of acid catalyst to form perpropionic acid (1). The perpropionic acid is taken up by extraction in benzene (5 , 12), and following drying of the benzene solution (16), the perpropionic acid in the solution is reacted with propylene (18) for oxidation of the propylene to propylene oxide and conversion of the perpropionic acid back to propionic acid. The reaction mixture is worked up to separate propylene oxide, propionic acid and benzene (25, 27, 31, 33), and the latter two are recycled. In the benzene extraction (5, 12), an aqueous raffinate (7) is formed containing hydrogen peroxide and acid catalyst. Water is removed from the aqueous raffinate (8) and the concentrate is recycled to the propionic acid reactor. Make-up hydrogen peroxide can be added to the aqueous raffinate before the removal of water.

    PROCESS FOR THE PREPARATION OF PROPYLENE OXIDE
    6.
    发明专利
    PROCESS FOR THE PREPARATION OF PROPYLENE OXIDE 未知

    公开(公告)号：CA1097367A

    公开(公告)日：1981-03-10

    申请号：CA264296

    申请日：1976-10-27

    Applicant: BAYER AG ,  DEGUSSA

    Inventor： PRESCHER GUENTER ,  SCHREYER GERD ,  WEIBERG OTTO ,  WIRTHWEIN ROLF ,  WALDMANN HELMUT ,  SEIFERT HERMANN ,  SCHWERDTEL WULF ,  SWODENK WOLFGANG

    IPC: C07C409/24 ,  C07D301/14 ,  C07D303/04

    Abstract: PROCESS FOR THE PREPARATION OF PROPYLENE OXIDE Process for continuous production of propylene oxide (Fig. 1) from propylene and aqueous hydrogen peroxide. The aqueous hydrogen peroxide is first reacted with propionic acid in the presence of acid catalyst to form perpropionic acid (1). The perpropionic acid is taken up by extraction in benzene (5); the perpropionic acid in the benzene solution is reacted with propylene (21) for oxidation of the propylene to propylene oxide and conversion of the perpropionic acid back to propionic acid. The reaction mixture is worked up to separate propylene oxide, propionic acid and benzene (27, 29, 34, 37), and the latter two are recyled. In the benzene extraction (5), an aqueous raffinate (7) is formed containing hydrogen peroxide and acid catalyst. The aqueous raffinate can be divided into a stream which is recycled to the propionic acid reactor (1), and a second stream which can be distilled to remove water with the concentrate being recycled to the propionic acid reactor. (1) Le A 17,343/6142 PV -1-

    METHOD OF PREPARING PERPROPIONIC ACID
    8.
    发明专利
    METHOD OF PREPARING PERPROPIONIC ACID 未知

    公开(公告)号：CS189766B2

    公开(公告)日：1979-04-30

    申请号：CS278976

    申请日：1976-04-28

    Applicant: DEGUSSA ,  BAYER AG

    Inventor： PRESCHER GUENTER ,  WEIBERG OTTO ,  WALDMANN HELMUT ,  SEIFERT HERMANN

    IPC: C07C67/00 ,  C07C407/00 ,  C07C409/24 ,  C07C179/10

    Abstract: Process for preparing perpropionic acid, by reaction of hydrogen peroxide with propionic acid, in the presence of sulfuric acid, under explosion-proof conditions, characterized in that the reaction of hydrogen peroxide with propionic acid in the presence of sulfuric acid is carried out, in a molar proportion of application of hydrogen peroxide; propionic acid of more than 3.5: 1, the reaction temperature is limited to a maximum temperature of 60º c. And the weight ratio of hydrogen peroxide (100% by weight): water is limited, before the start of the reaction with propionic acid, at most 0.8, the concentration of the sulfuric acid in the reaction mixture increasing to 10 to 40% by weight. (Machine-translation by Google Translate, not legally binding)

    PROCESS FOR RECOVERING NON-AQUEOUS HYDROGEN PEROXIDE SOLUTIONS
    10.
    发明专利
    PROCESS FOR RECOVERING NON-AQUEOUS HYDROGEN PEROXIDE SOLUTIONS 未知

    公开(公告)号：CA946589A

    公开(公告)日：1974-05-07

    申请号：CA113670

    申请日：1971-05-21

    Applicant: DEGUSSA

    Inventor： SCHREYER GERD ,  THEISSEN FERDINAND ,  WEIBERG OTTO ,  WEIGERT WOLFGANG

    IPC: C01B15/022 ,  C01B15/017 ,  C01B15/032

    Abstract: 1343052 Non-aqueous hydrogen peroxide solutions DEUTSCHE GOLD-UND SILBERSCHEIDEANSTALT 21 May 1971 [23 May 1970] 16188/71 Heading C1A [Also in Division B1] A non-aqueous solution of hydrogen peroxide is obtained by passing a working solution containing hydrogen peroxide obtained by the anthraquinone process through a film forming evaporator in the presence of the vapour of at least one organic solvent for hydrogen peroxide which is chemically stable under the process conditions and which boils at 30 to 180‹ C. at normal pressure, and thereafter condensing the vapour containing H 2 O 2 , produced in the evaporator by desorption of H 2 O 2 from the working solution, either by direct evaporation cooling with the liquid organic solvent or solvents used, preferably in supercooled form, or by a heat exchanger. The working solution may be preheated-before being passed to the evaporator and during evaporation, the organic solvent/s vapours may be guided in parallel current with or in counter current to the working solution. Alternatively, the vapour of the organic solvent/s may be produced in situ from the working solution in the evaporator. The desorption of H 2 O 2 is preferably carried out under a reduced pressure of 5 to 60 Torr. and the organic solvent/s used in the desorption are preferably carboxylic acids, esters, alcohols, ketones and ethers or mixtures of these or combinations with hydrocarbons.

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