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    71.
    发明专利
    未知

    公开(公告)号：DE102004014677A1

    公开(公告)日：2005-10-13

    申请号：DE102004014677

    申请日：2004-03-25

    Applicant: BASF AG

    Inventor： WALSDORFF CHRISTIAN ,  SEIDEMANN LOTHAR ,  SESING MARTIN ,  FIENE MARTIN ,  GRASLER THOMAS ,  METELKINA OLGA ,  STROEFER ECKHARD ,  SOHN MARTIN

    IPC: B01J8/18 ,  B01J8/24 ,  C01B7/04 ,  B01J23/46

    Abstract: The invention relates to a process for carrying out exothermic chemical equilibrium reactions in a fluidized-bed reactor, wherein there is a temperature distribution in the fluidized bed of the fluidized-bed reactor and the temperature difference between the lowest temperature and the highest temperature is at least 10 K. The invention further relates to a fluidized-bed reactor for carrying out chemical reactions in a fluidized bed ( 5 ), wherein at least one heat exchanger ( 12, 28 ) is located in the fluidized bed ( 5 ) to control the temperature distribution.

    73.
    发明专利
    未知

    公开(公告)号：NO20045324L

    公开(公告)日：2005-02-11

    申请号：NO20045324

    申请日：2004-12-03

    Applicant: BASF AG

    Inventor： HARTH KLAUS ,  HIBST HARTMUT ,  SCHINDLER GOTZ-PETER ,  WALSDORFF CHRISTIAN

    IPC: B01J23/62 ,  C07B61/00 ,  C07C5/333 ,  C07C11/167

    Abstract: The invention relates to a process for preparing butadiene from n-butane comprising the steps (A) providing an n-butane-containing feed gas stream, (B) feeding the n-butane-containing feed gas stream into a first dehydrogenation zone and nonoxidatively catalytically dehydrogenating n-butane to 1-butene, 2-butene and optionally butadiene to obtain a first product gas stream comprising n-butane, 1-butene and 2-butene, with or without butadiene and secondary components, (C) feeding the first product gas stream comprising n-butane, 1-butene and 2-butene, with or without butadiene and secondary components, into a second dehydrogenation zone and oxidatively dehydrogenating 1-butene and 2-butene to butadiene to give a second product gas stream comprising butadiene, n-butane and steam, with or without secondary components, (D) recovering butadiene from the second product gas stream.

    74.
    发明专利
    未知

    公开(公告)号：BR0307305A

    公开(公告)日：2005-01-04

    申请号：BR0307305

    申请日：2003-02-17

    Applicant: BASF AG

    Inventor： WALSDORFF CHRISTIAN ,  SCHINDLER GUETZ-PETER ,  HARTH KLAUS ,  HIBST HARTMUT

    IPC: C07C2/46 ,  C07B61/00 ,  C07C2/52 ,  C07C5/367 ,  C07C13/20 ,  C07C15/073 ,  C07C15/46

    Abstract: The invention relates to a process for preparing 4-vinylcyclohexene, which comprises the steps (A) providing an n-butane-containing feed gas stream, (B) feeding the n-butane-containing feed gas stream into at least one dehydrogenation zone and dehydrogenating n-butane to butadiene to give a product stream comprising butadiene, n-butane, possibly 1-butene and 2-butene and possibly water vapor and other secondary constituents, (C) feeding the product stream from dehydrogenation, if appropriate after separating off water vapor and secondary constituents, into a dimerization zone and catalytically dimerizing butadiene to give a product stream comprising 4-vinylcyclohexene, n-butane and possibly 1-butene, 2-butene and unreacted butadiene, and (D) separating off 4-vinylcyclohexene from the product stream from the dimerization and recirculating n-butane and possibly 1-butene, 2-butene and unreacted butadiene to the dehydrogenation zone.

    77.
    发明专利
    未知

    公开(公告)号：DE10159615A1

    公开(公告)日：2003-06-12

    申请号：DE10159615

    申请日：2001-12-05

    Applicant: BASF AG

    Inventor： HARTH KLAUS ,  SCHINDLER GOETZ-PETER ,  WALSDORFF CHRISTIAN ,  KUHRS CHRISTIAN ,  SIMON FALK

    IPC: C07C17/02 ,  C07C17/15 ,  C07C17/152 ,  C07C17/156 ,  C07C17/158 ,  C07C17/25 ,  C07C17/38 ,  C07C19/045 ,  C07C21/06

    Abstract: The invention relates to a method for the production of 1,2-dichloroethane, comprising the following steps: (A) feeding a feed gas flow containing an ethane into a dehydrogenation zone; dehydrogenating the ethane into ethene while obtaining a product gas flow containing ethane, ethene and minor constituents; (B) feeding the dehydrogenated product gas flow containing the ethane and ethene into a flow or several partial flows, optionally after separating the minor constituents, in one or more chlorination zones; chlorinating ethene into 1,2-dichloroethane while obtaining one or more product gas flows containing 1,2-dichloroethane, ethane and optionally other minor; obtaining 1,2-dichloroethane and one or more circuit gas flows containing ethane and recirculating the circuit gas flow(s) containing ethane to the ethane dehydrogenation.

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