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公开(公告)号：CA1050050A
公开(公告)日：1979-03-06
申请号：CA223706
申请日：1975-04-02
Applicant: HOECHST AG
Inventor： RIEDL JOSEF , FROHLICH WALTER , MITTERMAIER ERICH
Abstract: PROCESS FOR THE MANUFACTURE OF VINYL CHLORIDE of the disclosure: 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 constituents are treated with chlorine and separated together with the highboiling constituents.
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公开(公告)号：HU178928B
公开(公告)日：1982-07-28
申请号：HUHO001787
申请日：1975-04-02
Applicant: HOECHST AG
Inventor： RIEDL JOSEF , FROELICH WALTER , MITTERMAIER ERICH
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.
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公开(公告)号：CH610289A5
公开(公告)日：1979-04-12
申请号：CH425075
申请日：1975-04-03
Applicant: HOECHST AG
Inventor： RIEDL JOSEF DR , FROEHLICH WALTER DR , MITTERMAIER ERICH
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.
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公开(公告)号：DE3662257D1
公开(公告)日：1989-04-13
申请号：DE3662257
申请日：1986-05-16
Applicant: HOECHST AG
Inventor： SCHWARZMAIER PETER , FROHLICH WALTER DR , KUHN WENZEL DR , RIEDL JOSEF DR , SCHAFFELHOFER IWO DR , MITTERMAIER ERICH , KRUMBOCK REINHARD
IPC: C07C17/04 , C07C17/00 , C07C17/38 , C07C17/383 , C07C19/045 , C07C67/00
Abstract: A process for the purification of 1,2-dichloroethane is described, in which the crude product, containing not more than 3% by weight of high-boilers, is distilled in a first column at 125 DEG to 180 DEG C. in such a way that the bottom product contains not more than 7% by weight of high-boilers. The purified, vaporous 1,2-dichloroethane discharged at the head of this column is used to heat product streams containing 1,2-dichloroethane. The bottom product from the first column is distilled in a second column, advantageously at a pressure of 5 to 40 kPa, together with a feed composed of vaporous 1,2-dichloroethane obtained from the reaction of ethylene with chlorine. The process makes it possible to purify 1,2-dichloroethane with a saving in energy.
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公开(公告)号：CS189703B2
公开(公告)日：1979-04-30
申请号：CS231775
申请日：1975-04-04
Applicant: HOECHST AG
Inventor： RIEDL JOSEF , FROEHLICH WALTER , MITTERMAIER ERICH
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.
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Patent Agency Ranking
公开(公告)号：AU7984175A
公开(公告)日：1976-10-07
申请号：AU7984175
申请日：1975-04-04
Applicant: HOECHST AG
Inventor： RIEDL JOSEF , FROHLICH WALTER , MITTERMAIER ERICH
IPC: B01J12/00 , B01J19/24 , C07C17/00 , C07C17/25 , C07C17/395 , C07C21/06 , C07C67/00 , C07C17/34 , C10G9/14 , C10G9/20
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.
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公开(公告)号：CA1279658C
公开(公告)日：1991-01-29
申请号：CA510214
申请日：1986-05-28
Applicant: HOECHST AG
Inventor： SCHWARZMAIER PETER , FROEHLICH WALTER , KUEHN WENZEL , RIEDL JOSEF , SCHAFFELHOFER IWO , MITTERMAIER ERICH , KRUMBOECK REINHARD
IPC: C07C17/04 , C07C17/00 , C07C17/38 , C07C17/383 , C07C19/045 , C07C67/00
Abstract: of the disclosure A process for the purification of 1,2-dichloroethane is described, in which the crude product, containing not more than 3% by weight of high-boilers, is distilled in a first column at 125 to 180.degree.C in such a way that the bottom product contains not more than 7% by weight of highboilers. The purified, gaseous 1,2-dichloroethane discharged at the head of this column is used to heat product streams containing 1,2-dichloroethane. The bottom product from the first column is distilled in a second column, advantageously at a pressure of 5 to 40 kPa, together with a feed composed of gaseous 1,2-dichloroethane obtained from the reaction of ethylene with chlorine. The process makes it possible to purify 1,2-dichloroethane with a saving in energy.
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公开(公告)号：DE3519161A1
公开(公告)日：1986-12-04
申请号：DE3519161
申请日：1985-05-29
Applicant: HOECHST AG
Inventor： SCHWARZMAIER PETER , FROEHLICH WALTER DR , KUEHN WENZEL DR , RIEDL JOSEF DR , SCHAFFELHOFER IWO DR , MITTERMAIER ERICH , KRUMBOECK REINHARD
IPC: C07C17/04 , C07C17/00 , C07C17/38 , C07C17/383 , C07C19/045 , C07C67/00
Abstract: A process for the purification of 1,2-dichloroethane is described, in which the crude product, containing not more than 3% by weight of high-boilers, is distilled in a first column at 125 DEG to 180 DEG C. in such a way that the bottom product contains not more than 7% by weight of high-boilers. The purified, vaporous 1,2-dichloroethane discharged at the head of this column is used to heat product streams containing 1,2-dichloroethane. The bottom product from the first column is distilled in a second column, advantageously at a pressure of 5 to 40 kPa, together with a feed composed of vaporous 1,2-dichloroethane obtained from the reaction of ethylene with chlorine. The process makes it possible to purify 1,2-dichloroethane with a saving in energy.
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公开(公告)号：RO72435A
公开(公告)日：1981-06-26
申请号：RO8190375
申请日：1975-04-05
Applicant: HOECHST AG
Inventor： RIEDL JOSEF , FROHLICH WALTER , MITTERMAIER ERICH
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.
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公开(公告)号：DE2217694A1
公开(公告)日：1973-10-18
申请号：DE2217694
申请日：1972-04-13
Applicant: HOECHST AG
Inventor： FROEHLICH WALTER DR , RIEDL JOSEF DR , BRANDSTETTER KARL , MITTERMAIER ERICH
IPC: C07C17/38
Abstract: Hydrocarbons boiling lower than 1,2-dichloroethane are sepd. from their mixts. with 1,2-dichloroethane by catalytic H2 treatment at 80-250 degrees C pref. 130-180 degrees C. and 0-20 atmos, pref. 0-5 atms. The resulting reaction prod. as far as it is not sol. in 1,2-dichloroethane is sepd. as gas.
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