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    31.
    发明专利
    未知

    公开(公告)号：AT426584T

    公开(公告)日：2009-04-15

    申请号：AT02801334

    申请日：2002-10-14

    Applicant: BASF SE

    Inventor： WALSDORFF CHRISTIAN ,  SCHINDLER GITZ-PETER ,  MACHHAMMER OTTO ,  HARTH KLAUS

    IPC: C07C5/48 ,  C07B61/00 ,  C07C5/327 ,  C07C5/333 ,  C07C11/02

    Abstract: C 2 -C 30 -alkanes are dehydrogenated in a process in which (i) ethylbenzene is dehydrogenated to styrene in a first part process to give a hydrogen-containing offgas stream, and (ii) one or more C 2 -C 30 -alkanes are dehydrogenated in the presence of a heterogeneous catalyst in one or more reaction zones in a second part process to give the corresponding olefins, with a hydrogen-containing gas stream being mixed into the reaction gas mixture of the dehydrogenation in at least one reaction zone, wherein at least part of the hydrogen-containing offgas stream obtained in the dehydrogenation of ethylbenzene is mixed into the reaction gas mixture of the alkane dehydrogenation.

    32.
    发明专利
    未知

    公开(公告)号：DE50311049D1

    公开(公告)日：2009-02-26

    申请号：DE50311049

    申请日：2003-02-17

    Applicant: BASF SE

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

    IPC: C07C2/46 ,  C07C2/52 ,  C07B61/00 ,  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.

    PROCESS FOR PREPARING ACRYLIC ACID WITH HIGH SPACE-TIME YIELD
    34.
    发明专利
    PROCESS FOR PREPARING ACRYLIC ACID WITH HIGH SPACE-TIME YIELD 未知

    公开(公告)号：ZA201508898B

    公开(公告)日：2019-04-24

    申请号：ZA201508898

    申请日：2015-12-07

    Applicant: BASF SE

    Inventor： GÖBEL MICHAEL ,  WALSDORFF CHRISTIAN ,  HARTMANN MARCO ,  WÖRZ NICOLAI TONIO ,  BLASCHKE TIM ,  GRÜNE PHILIPP

    Abstract: In a process for preparing acrylic acid, a reaction gas which comprises a gaseous formaldehyde source and gaseous acetic acid and in which the partial pressure of the formaldehyde source, calculated as formaldehyde equivalents, is at least 85 mbar and in which the molar ratio of the acetic acid to the formaldehyde source, calculated as formaldehyde equivalents, is at least 1 is contacted with a solid condensation catalyst. The space-time yield can be enhanced significantly by increasing the partial pressure of the reactants. The space-time yield remains high even after prolonged process duration.

    Oxidationskatalysator mit sattelförmigem Trägerformkörper
    37.
    发明专利
    Oxidationskatalysator mit sattelförmigem Trägerformkörper 未知

    公开(公告)号：DE102014203725A1

    公开(公告)日：2015-09-03

    申请号：DE102014203725

    申请日：2014-02-28

    Applicant: BASF SE

    Inventor： HAMMON ULRICH ,  WELKER-NIEUWOUDT CATHRIN ALEXANDRA ,  MACHT JOSEF ,  WALSDORFF CHRISTIAN ,  DOBNER CORNELIA KATHARINA

    IPC: B01J35/02 ,  B01J23/28

    Abstract: Die Erfindung betrifft einen Oxidationskatalysator, umfassend mindestens einen anorganischen oxidischen oder keramischen Trägerformkörper mit einer BET-Oberfläche von weniger als 0,5 m2/g, bezogen auf den Träger, der mindestens teilweise beschichtet ist mit einem katalytisch aktiven Multielementoxid, wobei der Katalysator edelmetallfrei ist und der Trägerformkörper die Form eines Sattels hat, dessen Sattelfläche in den beiden Hauptrichtungen entgegengesetzt gekrümmt ist, ein Verfahren zu seiner Herstellung, seine Verwendung in unterschiedlichen katalytischen Gasphasenoxidationen und entsprechende Verfahren zur katalytischen Gasphasenoxidation.

    39.
    发明专利
    未知

    公开(公告)号：AT502896T

    公开(公告)日：2011-04-15

    申请号：AT03789225

    申请日：2003-12-11

    Applicant: BASF SE

    Inventor： OLBERT GERHARD ,  WALSDORFF CHRISTIAN ,  HARTH KLAUS ,  STROEFER ECKHARD ,  FIENE MARTIN

    IPC: C01B7/04 ,  B01J8/00 ,  B01J8/06

    Abstract: Preparation of chlorine involves passing hydrogen chloride and molecular oxygen in a reactor (1) having parallel catalyst tubes (2) charged with fixed-bed catalyst aligned in longitudinal direction of reactor; and alternatively arranged annular and disk-shaped deflection plates (6 and 7) which leave annular passage (9) free. A liquid heat transfer medium circulates between tubes.

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