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    1.
    发明专利
    未知

    公开(公告)号：AT451341T

    公开(公告)日：2009-12-15

    申请号：AT07802378

    申请日：2007-07-16

    Applicant: BASF SE

    Inventor： PINKOS ROLF ,  HEIMANN JENS ,  POLKA HANS-MARTIN ,  URTEL HEIKO ,  WINDECKER GUNTHER

    IPC: C07B63/00 ,  C07C29/149 ,  C07C31/20 ,  C07C209/48

    Abstract: The present invention relates to a process for separating off solvents from solvent-comprising hydrogenation outputs from a catalytic hydrogenation process, which comprise at least one water-soluble hydrogenation product having at least one alcohol, lactone, ether, lactam or amino group in a solvent which is immiscible or not completely miscible with water and has a boiling point below 100° C., wherein water is added to the hydrogenation output, the solvent-comprising phase is separated off and recirculated to the hydrogenation.

    3.
    发明专利
    未知

    公开(公告)号：AT502913T

    公开(公告)日：2011-04-15

    申请号：AT06707886

    申请日：2006-01-30

    Applicant: BASF SE

    Inventor： WECK ALEXANDER ,  ROESCH MARKUS ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR ,  PINKOS ROLF ,  SCHUBERT OLGA ,  HARTH KLAUS

    IPC: C07C51/36 ,  B01J19/00 ,  C07C55/10 ,  C07D307/60

    Abstract: The invention relates to a method of controlling a hydrogenation of a starting material in a hydrogenation reactor, in which the amount of hydrogen reacted in the hydrogenation is firstly determined, the ratio of the amount of hydrogen reacted to the amount of starting material fed in is then derived, this ratio is compared with a prescribed value and, finally, at least one process parameter is altered if the ratio of the amount of hydrogen reacted to the amount of starting material fed in deviates by a prescribed amount from the prescribed value.

    8.
    发明专利
    未知

    公开(公告)号：AT471306T

    公开(公告)日：2010-07-15

    申请号：AT03757050

    申请日：2003-06-10

    Applicant: BASF SE

    Inventor： HESSE MICHAEL ,  SCHLITTER STEPHAN ,  BORCHERT HOLGER ,  SCHUBERT MARKUS ,  ROESCH MARKUS ,  BOTTKE NILS ,  FISCHER ROLF-HARTMUTH ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR

    IPC: C07C29/149 ,  C07B61/00 ,  C07C31/20

    Abstract: The present invention relates to a process for preparing optionally alkyl-substituted 1,4-butanediol by two-stage catalytic hydrogenation in the gas phase of C 4 -dicarboxylic acids and/or of derivatives thereof having the following steps: a) introducing a gas stream of a C 4 -dicarboxylic acid or of a derivative thereof at from 200 to 300° C. and from 10 to 100 bar into a first reactor or into a first reaction zone of a reactor and catalytically hydrogenating it in the gas phase to a product which contains mainly optionally alkyl-substituted gamma-butyrolactone; b) introducing the product stream obtained in this way into a second reactor or into a second reaction zone of a reactor at a temperature of from 140° C. to 260° C. and catalytically hydrogenating it in the gas phase to optionally alkyl-substituted 1,4-butanediol; steps a) and b) being carried out at the same pressure; c) removing the desired product from intermediates, by-products and any unconverted reactants; d) optionally recycling unconverted intermediates into one or both hydrogenation stages, said hydrogenation stages each using a catalyst which comprises =5% by weight, preferably from 5 to 95% by weight, in particular from 20 to 90% by weight, of an oxidic support, and the product mixture removed from the first hydrogenation stage being introduced without further purification into the second hydrogenation stage.

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