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    21.
    发明专利
    未知

    公开(公告)号：AT335721T

    公开(公告)日：2006-09-15

    申请号：AT03785813

    申请日：2003-12-13

    Applicant: BASF AG

    Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JUERGEN ,  VAN DEN ABEEL PETER ,  DEBERDT FILIP ,  JACOBS JAN D ,  MACKENROTH WOLFGANG

    IPC: C07C263/20

    Abstract: The invention relates to a process for preparing isocyanates by reaction of amines with phosgene in the presence of inert organic solvents in a reactor and subsequent work-up of the reaction mixture leaving the reactor, wherein the solvent is separated off in a two-stage or multistage, preferably two-stage, distillation process in which the solvent is separated off at a pressure of 0.1-15 bar in a first apparatus and at 1-900 mbar in a second apparatus or further apparatuses, with the heat of condensation of the solvent vapor from the first apparatus being used for partial or complete vaporization of solvent in the second apparatus.

    25.
    发明专利
    未知

    公开(公告)号：DE50301676D1

    公开(公告)日：2005-12-22

    申请号：DE50301676

    申请日：2003-02-12

    Applicant: BASF AG

    Inventor： OLBERT GERHARD ,  MATTKE TORSTEN ,  VANDERWAEREN LUC ,  NEVEJANS FILIP ,  HAMMENECKER JAN

    IPC: B01J8/00 ,  B01J8/06 ,  B01J12/00 ,  B01J19/00 ,  C01B32/80 ,  C01B31/28

    Abstract: A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid catalyst, which reactor has a bundle of parallel catalyst tubes (2) aligned in the longitudinal direction of the reactor whose ends are fixed in tube plates (3) and have a cap (4) at each end of the reactor (1), and has deflection plates (6) which are aligned perpendicular to the longitudinal direction of the reactor in the intermediate space (5) between the catalyst tubes (2) and leave free passages (7) located alternately opposite one another on the interior wall of the reactor, and in which the catalyst tubes (2) are charged with the solid catalyst, the gaseous reaction mixture is passed from one end of the reactor via one cap (4) through the catalyst tubes (2) and is taken off from the opposite end of the reactor (1) via the second cap (4) and a liquid heat transfer medium is passed through the intermediate space (5) around the catalyst tubes (2), where the reactor (1) has no tubes in the region of the passages (7), is proposed.

    26.
    发明专利
    未知

    公开(公告)号：DE10260093A1

    公开(公告)日：2004-07-01

    申请号：DE10260093

    申请日：2002-12-19

    Applicant: BASF AG

    Inventor： SOHN MARTIN ,  STROEFER ECKHARD ,  NEVEJANS FILIP ,  PENZEL ULRICH ,  PALLASCH HANS-JUERGEN ,  SANDER MICHAEL ,  SCHWARZ HANS VOLKMAR ,  MACKENROTH WOLFGANG

    IPC: C07C263/10 ,  C07C263/20 ,  C07C265/14 ,  B01D3/00

    Abstract: The present invention relates to a process for preparing isocyanates by reaction of amines with phosgene in a reactor and subsequent separation of the isocyanate from the reaction mixture leaving the reactor and purification of the isocyanate, wherein the separation and purification of the isocyanate is carried out in a column having a pressure at the top of 1-950 mbar, preferably 5-50 mbar, particularly preferably 10-20 mbar, and a temperature at the bottom of 90-250° C., preferably 120-170° C., particularly preferably 130-150° C., and the pure isocyanate stream is preferably taken off in liquid or gaseous form at a side offtake of the column.

    REACTOR AND METHOD FOR PRODUCING PHOSGENE
    29.
    发明专利
    REACTOR AND METHOD FOR PRODUCING PHOSGENE 未知

    公开(公告)号：AU2003208834A1

    公开(公告)日：2003-09-09

    申请号：AU2003208834

    申请日：2003-02-12

    Applicant: BASF AG

    Inventor： OLBERT GERHARD ,  MATTKE TORSTEN ,  VANDERWAEREN LUC ,  NEVEJANS FILIP ,  HAMMENECKER JAN

    IPC: B01J8/00 ,  B01J8/06 ,  B01J12/00 ,  B01J19/00 ,  C01B32/80 ,  C01B31/28

    Abstract: A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid catalyst, which reactor has a bundle of parallel catalyst tubes (2) aligned in the longitudinal direction of the reactor whose ends are fixed in tube plates (3) and have a cap (4) at each end of the reactor (1), and has deflection plates (6) which are aligned perpendicular to the longitudinal direction of the reactor in the intermediate space (5) between the catalyst tubes (2) and leave free passages (7) located alternately opposite one another on the interior wall of the reactor, and in which the catalyst tubes (2) are charged with the solid catalyst, the gaseous reaction mixture is passed from one end of the reactor via one cap (4) through the catalyst tubes (2) and is taken off from the opposite end of the reactor (1) via the second cap (4) and a liquid heat transfer medium is passed through the intermediate space (5) around the catalyst tubes (2), where the reactor (1) has no tubes in the region of the passages (7), is proposed.

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