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    2.
    发明专利
    未知

    公开(公告)号：BR7902626A

    公开(公告)日：1979-11-27

    申请号：BR7902626

    申请日：1979-04-30

    Applicant: HOECHST AG

    Inventor： SCHOLZ H ,  SCHUCHARDT K ,  LEGUTKE G

    IPC: B01J21/00 ,  B01J27/122 ,  C07C17/00 ,  C07C17/156 ,  C07C19/045 ,  C07C67/00 ,  C07C19/02 ,  C07C17/15

    Abstract: The invention provides a process for making 1,2-dichloroethane by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and a gas containing molecular oxygen, in gas phase, at elevated temperature and in contact with a fluidized bed catalyst of copper-II-chloride on a carrier, wherein the reaction gases are cooled under pressure in two condensation stages, condensed 1,2-dichloroethane and water are removed, the bulk of unreacted starting gas and inert gas are recycled, the reaction gases coming from the second condensation stage are delivered to a third condensation stage, cooled therein under pressure down to a temperature within the range 5 DEG to 18 DEG C. and to the extent necessary to retain in the recycle gas 0.5 to 3 volume % of 1,2-dichloroethane, and the recycle gas is admixed, directly upstream of the reactor, with a quantity of pure oxygen necessary to replace consumed oxygen. The present process provides more specifically for preheated hydrogen chloride to be wholly or partially introduced into the recycle gas heated to 150 DEG to 200 DEG C. and for the latter to be then admixed with pure oxygen, the oxygen being admitted at a point lying between the hydrogen chloride feed point and the feed point of the recycle gas into the reactor.

    4.
    发明专利
    未知

    公开(公告)号：SE442745B

    公开(公告)日：1986-01-27

    申请号：SE7804878

    申请日：1978-04-27

    Applicant: HOECHST AG

    Inventor： LEGUTKE G ,  RECHMEIER G ,  SCHOLZ H ,  SCHUCHARDT K ,  HOLLER E ,  LIESENFELDER G

    IPC: B01J27/00 ,  C07B61/00 ,  C07C17/00 ,  C07C17/156 ,  C07C19/045 ,  C07C67/00

    Abstract: 1,2-dichloroethane is made by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and a gas containing molecular oxygen in gas phase, at elevated temperature and in contact with a fluidized bed copper-II-chloride catalyst on a carrier, wherein the reaction gases are cooled under pressure in two condensation stages, condensed 1,2-dichloroethane and water are removed and the bulk of unreacted starting gas and inert gas are recycled. More specifically the reaction gases are delivered to a third condensation stage and cooled therein under pressure down to a temperature within the range 5 DEG to 18 DEG C. and to the extent necessary for the recycle gas to contain 0.5 to 3 volume % of 1,2-dichloroethane. Next, the recycle gas is directly admixed upstream of the reactor, with a quantity of pure oxygen necessary to replace consumed oxygen and re-establish an oxygen content of 12 to 25 volume % therein.

    5.
    发明专利
    未知

    公开(公告)号：SE7804878L

    公开(公告)日：1978-10-29

    申请号：SE7804878

    申请日：1978-04-27

    Applicant: HOECHST AG

    Inventor： LEGUTKE G ,  RECHMEIER G ,  SCHOLZ H ,  SCHUCHARDT K ,  HOLLER E ,  LIESENFELDER G

    IPC: B01J27/00 ,  C07B61/00 ,  C07C17/00 ,  C07C17/156 ,  C07C19/045 ,  C07C67/00 ,  C07C17/15 ,  C07C19/02

    Abstract: 1,2-dichloroethane is made by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and a gas containing molecular oxygen in gas phase, at elevated temperature and in contact with a fluidized bed copper-II-chloride catalyst on a carrier, wherein the reaction gases are cooled under pressure in two condensation stages, condensed 1,2-dichloroethane and water are removed and the bulk of unreacted starting gas and inert gas are recycled. More specifically the reaction gases are delivered to a third condensation stage and cooled therein under pressure down to a temperature within the range 5 DEG to 18 DEG C. and to the extent necessary for the recycle gas to contain 0.5 to 3 volume % of 1,2-dichloroethane. Next, the recycle gas is directly admixed upstream of the reactor, with a quantity of pure oxygen necessary to replace consumed oxygen and re-establish an oxygen content of 12 to 25 volume % therein.

    6.
    发明专利
    未知

    公开(公告)号：BR7802608A

    公开(公告)日：1978-12-19

    申请号：BR7802608

    申请日：1978-04-26

    Applicant: HOECHST AG

    Inventor： SCHUCHARDT K ,  RECHMEIER G ,  LIESENFELDER G ,  SCHOLZ H ,  LEGUTKE G ,  HOLLER E

    IPC: B01J27/00 ,  C07B61/00 ,  C07C17/00 ,  C07C17/156 ,  C07C19/045 ,  C07C67/00 ,  C07C19/02 ,  C07C17/15

    Abstract: 1,2-dichloroethane is made by subjecting ethylene to an oxychlorination reaction with hydrogen chloride and a gas containing molecular oxygen in gas phase, at elevated temperature and in contact with a fluidized bed copper-II-chloride catalyst on a carrier, wherein the reaction gases are cooled under pressure in two condensation stages, condensed 1,2-dichloroethane and water are removed and the bulk of unreacted starting gas and inert gas are recycled. More specifically the reaction gases are delivered to a third condensation stage and cooled therein under pressure down to a temperature within the range 5 DEG to 18 DEG C. and to the extent necessary for the recycle gas to contain 0.5 to 3 volume % of 1,2-dichloroethane. Next, the recycle gas is directly admixed upstream of the reactor, with a quantity of pure oxygen necessary to replace consumed oxygen and re-establish an oxygen content of 12 to 25 volume % therein.

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