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    VERFAHREN ZUR HERSTELLUNG VON MALEINS UREANHYDRID
    21.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON MALEINS UREANHYDRID 有权
    用于生产马来酸酐

    公开(公告)号：EP1658258B1

    公开(公告)日：2008-05-14

    申请号：EP04740696.2

    申请日：2004-07-06

    Applicant: BASF SE

    Inventor： DUDA, Mark ,  MACHHAMMER, Otto ,  WECK, Alexander

    IPC: C07C51/215

    CPC classification number: C07C51/215 ,  C07C57/145

    Abstract: Disclosed is a method for producing maleic anhydride by means of heterogeneous catalytic gas phase oxidation of n-butane with gases containing oxygen on a catalyst comprising vanadium, phosphorus, and oxygen in a reactor unit at a temperature ranging between 350 and 500 °C, whereupon the obtained maleic anhydride is isolated while a gas flow is formed that contains unreacted n-butane and water, and at least some of the unreacted n-butane is recirculated to the reactor unit. According to the inventive method, an input flow having an n-butane concentration of 0.5 to 1.5 percent by volume and an oxygen concentration of 5 to 21 percent by volume is fed to the reactor unit while a pressure of 0.4 to 2 MPa abs is adjusted at the inlet of the reactor unit and 40 to 100 percent of the n-butane from the input flow are reacted per reactor cycle.

    VERFAHREN ZU HERSTELLUNG VON OLIGOMEREN DES BUTEN
    23.
    发明公开
    VERFAHREN ZU HERSTELLUNG VON OLIGOMEREN DES BUTEN 有权
    用于生产低聚物丁烯

    公开(公告)号：EP2782888A1

    公开(公告)日：2014-10-01

    申请号：EP12778343.9

    申请日：2012-10-25

    Applicant: BASF SE

    Inventor： CRONE, Sven ,  RYLL, Oliver ,  BLUM, Till ,  WECK, Alexander ,  PAPP, Rainer ,  KROKOSZINSKI, Roland ,  BLANKERTZ, Heinrich-Josef

    IPC: C07C2/10 ,  C07C11/02

    CPC classification number: C07C7/04 ,  C07C2/06 ,  C07C7/177 ,  C07C11/08 ,  C07C9/14 ,  C07C9/22 ,  C07C9/12

    Abstract: Procedure for manufacturing oligomers by continuous oligomerization of butenes, characterized in that a) an initial stream is used which contains 1-butene and 2-butene at a total concentration of 10 to 70 wt% and 10 to 60 wt% of iso-butane (called initial stream 1 hereafter), b) said initial stream 1 is converted until more than 60 wt% of the 1-butene contained in initial stream 1, but less than 50 wt% of the 2-butene contained in initial stream 1, are converted into oligomers, c) the oligomers obtained in b) are separated and optionally fed to further processing, and the remaining stream is fed to a distillation processing step, d) iso-butane is separated by distillation from the remaining steam, e) the iso-butane-depleted stream (called initial stream 2 hereafter) obtained after the distillation processing step d) is converted into oligomers.

    VERFAHREN ZUR HERSTELLUNG VON 1,4- BUTANDIOL
    26.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON 1,4- BUTANDIOL 有权
    用于生产1,4丁二醇

    公开(公告)号：EP1515932B1

    公开(公告)日：2010-06-16

    申请号：EP03757050.4

    申请日：2003-06-10

    Applicant: BASF SE

    Inventor： HESSE, Michael ,  SCHLITTER, Stephan ,  BORCHERT, Holger ,  SCHUBERT, Markus ,  RÖSCH, Markus ,  BOTTKE, Nils ,  FISCHER, Rolf-Hartmuth ,  WECK, Alexander ,  WINDECKER, Gunther ,  HEYDRICH, Gunnar

    IPC: C07C29/149 ,  C07C31/20

    CPC classification number: C07C29/149 ,  Y02P20/582 ,  C07C31/207

    Abstract: The invention relates to a method for producing optionally alkyl-substituted 1,4-butanediol by means of two-stage catalytic hydration in the gas phase, comprising the following steps: a) a gas stream of C4-dicarboxylic acid or a derivative thereof is fed into a first reactor and the gas phase is catalytically hydrated so as to obtain a product mainly containing optionally alkyl-substituted y-butyrolactone; b) the obtained product stream is fed into a second reactor and the gas phase is catalytically hydrated so as to obtain optionally alkyl-substituted 1,4-butanediol; c) the desired product is separated from intermediate products, by-products, and an optionally unreacted starting material. A catalyst comprising = 95 percent by weight of CuO and = 5 percent by weight of an oxidic carrier is used in each hydration stage. The product mixture obtained in the first hydration step is introduced into the second hydration stage without further cleaning said product mixture.

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