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    24.
    发明专利
    未知

    公开(公告)号：NO142575C

    公开(公告)日：1980-09-17

    申请号：NO751170

    申请日：1975-04-04

    Applicant: HOECHST AG

    Inventor： RIEDL JOSEF ,  FROEHLICH WALTER ,  MITTERMAIER ERICH

    IPC: B01J12/00 ,  B01J19/24 ,  C07C17/00 ,  C07C17/25 ,  C07C17/395 ,  C07C21/06 ,  C07C67/00 ,  C07C17/34

    Abstract: Vinyl chloride is produced by pyrolytic decomposition of 1,2-dichloroethane in a furnace with coiled up reaction tube having an internal diameter of from 12 to 16 cm. The dichloroethane is vaporized completely in the convection zone of the pyrolytic furnace, different amounts of heat are supplied to the different zones of the reaction tube and, after decomposition in the working up of the reaction products, the low-boiling constitutents are treated with chlorine and separated together with the high-boiling constituents.

    25.
    发明专利
    未知

    公开(公告)号：NO142575B

    公开(公告)日：1980-06-02

    申请号：NO751170

    申请日：1975-04-04

    Applicant: HOECHST AG

    Inventor： RIEDL JOSEF ,  FROEHLICH WALTER ,  MITTERMAIER ERICH

    IPC: B01J12/00 ,  B01J19/24 ,  C07C17/00 ,  C07C17/25 ,  C07C17/395 ,  C07C21/06 ,  C07C67/00 ,  C07C17/34

    Abstract: Vinyl chloride is produced by pyrolytic decomposition of 1,2-dichloroethane in a furnace with coiled up reaction tube having an internal diameter of from 12 to 16 cm. The dichloroethane is vaporized completely in the convection zone of the pyrolytic furnace, different amounts of heat are supplied to the different zones of the reaction tube and, after decomposition in the working up of the reaction products, the low-boiling constitutents are treated with chlorine and separated together with the high-boiling constituents.

    27.
    发明专利
    未知

    公开(公告)号：NO151857B

    公开(公告)日：1985-03-11

    申请号：NO801613

    申请日：1980-05-30

    Applicant: HOECHST AG

    Inventor： RIEDL JOSEF ,  KUEHN WENTZEL ,  WIDMANN PETER

    IPC: B01J23/00 ,  B01J23/72 ,  B01J23/74 ,  B01J27/10 ,  B01J27/122 ,  B01J27/128 ,  C07B61/00 ,  C07C17/00 ,  C07C17/02 ,  C07C17/156 ,  C07C19/045 ,  C07C67/00

    Abstract: A process for the manufacture of 1,2-dichloroethane from ethylene by reaction with hydrogen chloride and inert gases containing oxygen, and also by reaction with chlorine, is described. The two chlorination reactions are carried out successively at 180 DEG to 360 DEG C. and under a pressure of 0.09 to 1.1 MPa in a common reaction space containing fluidized catalyst particles. A stoichiometric excess of ethylene is employed for the first chlorination reaction. The heat formed in the reaction space is removed by indirect cooling. The process is simple in terms of apparatus and permits a better re-use of the total heat of reaction of the chlorination of ethylene.

    PROCESS FOR IMPROVING THE ACTIVITY OF SUPPORTED SILVER CATALYSTS
    28.
    发明专利
    PROCESS FOR IMPROVING THE ACTIVITY OF SUPPORTED SILVER CATALYSTS 未知

    公开(公告)号：CA1152973A

    公开(公告)日：1983-08-30

    申请号：CA360614

    申请日：1980-09-19

    Applicant: HOECHST AG

    Inventor： ALFRANSEDER JOSEF ,  MAYER SIGMUND ,  REBSDAT SIEGFRIED ,  RIEDL JOSEF ,  SCHAFFELHOFER IWO

    IPC: B01J23/50 ,  B01J23/66 ,  B01J23/68 ,  B01J23/96 ,  B01J38/48 ,  B01J38/66 ,  C07B61/00 ,  C07D301/10 ,  C07D303/04

    Abstract: : HOE 79/F 919 Process for improving the activity of supported silver catalysts Supported silver catalysts, which should have as high an activity as possible, are employed for the manufacture of ethylene oxide by oxidizing ethylene by means of oxygen or air. A process is described for improving the activity of supported silver catalysts which have already been used, in which the used catalyst is first washed with an inert liquid containing ammonia and/or aliphatic amines and 1 to 1,000 parts, per 1 million parts of catalyst, of cesium, rubidium or a mixture thereof is then deposited on the washed catalyst. The deposition is generally effected with the aid of an impregnating solution containing the cesium and/or rubidium compounds in a suitable quantity. This process makes it possible to improve considerably the activity of supported silver catalysts which have already been in use for the oxidation of ethylene by means of oxygen or air.

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