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    PROCESS AND APPARATUS FOR CONTINUOUSLY PREPARING HYDROGEN SULFIDE
    31.
    发明专利
    PROCESS AND APPARATUS FOR CONTINUOUSLY PREPARING HYDROGEN SULFIDE 未知

    公开(公告)号：CA2674554A1

    公开(公告)日：2008-07-24

    申请号：CA2674554

    申请日：2008-01-15

    Applicant: BASF SE

    Inventor： JACHOW HARALD ,  DRIESS HEINZ ,  WOELFERT ANDREAS

    IPC: C01B17/16

    Abstract: The invention relates to a method and a device for the continuous product ion of hydrogen sulphide H2S, wherein the crude gas stream containing the H2 S generated in the production contains polysulphanes (H2Sx). The crude gas s tream is passed through a catalytically active material (41) contained in a vessel (42) at a temperature of 114 to165°C and the sulphur generated is tra pped in the sump (43) of the vessel (42) and recycled for production of H2S. The device according to the invention, comprises a reactor (1) for the reac tion of sulphur and hydrogen, a cooler (40), connected to the reactor (1), f or cooling a crude gas stream containing H2S withdrawn from the reactor (1) to 114 to 165°C, a vessel (42) connected to the cooler (40) and containing c atalytically active material (41) with a sump (43) for trapping sulphur gene rated in the vessel (42) from the crude gas stream containing polysulphanes at 114 to 165°C and a line (44), connected to the sump (34) of the vessel (4 2) which opens out in the cooler (40) or in the reactor (1) for the recyclin g of sulphur.

    32.
    发明专利
    未知

    公开(公告)号：DE50212185D1

    公开(公告)日：2008-06-12

    申请号：DE50212185

    申请日：2002-06-06

    Applicant: BASF SE

    Inventor： WOELFERT ANDREAS ,  MUELLER CHRISTIAN ,  STROEFER ECKHARD

    IPC: C07C263/10 ,  C07C265/14

    Abstract: The invention relates to a process for the production of isocyanates by reaction of primary amines with phosgene, in which isocyanate is used as solvent, wherein some or all of isocyanate used as solvent is added to the reaction mixture only after the amine and phosgene have been physically combined.

    33.
    发明专利
    未知

    公开(公告)号：AT393761T

    公开(公告)日：2008-05-15

    申请号：AT02745367

    申请日：2002-06-06

    Applicant: BASF SE

    Inventor： WOELFERT ANDREAS ,  MUELLER CHRISTIAN ,  STROEFER ECKHARD

    IPC: C07C263/10 ,  C07C265/14

    Abstract: The invention relates to a process for the production of isocyanates by reaction of primary amines with phosgene, in which isocyanate is used as solvent, wherein some or all of isocyanate used as solvent is added to the reaction mixture only after the amine and phosgene have been physically combined.

    PROCESS AND APPARATUS FOR CONTINUOUSLY PREPARING HYDROGEN SULFIDE
    34.
    发明专利
    PROCESS AND APPARATUS FOR CONTINUOUSLY PREPARING HYDROGEN SULFIDE 未知

    公开(公告)号：CA2674554C

    公开(公告)日：2016-09-20

    申请号：CA2674554

    申请日：2008-01-15

    Applicant: BASF SE

    Inventor： WOELFERT ANDREAS ,  JACHOW HARALD ,  DRIESS HEINZ

    IPC: C01B17/16

    Abstract: The invention relates to a process and to an apparatus for continuously preparing hydrogen sulfide H2S, polysulfanes (H2Sx) being present in an H2S-containing crude gas stream obtained in the preparation. The crude gas stream is passed at temperatures of from 114 to 165°C through catalytically active material (41) present in a vessel (42), and sulfur obtained here is collected in the bottom (43) of the vessel (42) and recycled to the preparation of H2S. The inventive apparatus comprises a reactor (1) for reacting sulfur and hydrogen, a cooler (40) connected to the reactor (1) for cooling an H2S-containing crude gas stream passed out of the reactor (1) to from 114 to 165°C, a vessel (42) which is connected to the cooler (40), comprises catalytically active material (41) and has a bottom (43) for collecting sulfur obtained from the crude gas stream comprising polysulfanes in the vessel (42) at from 114 to 165°C, and a line (44) which is connected to the bottom (43) of the vessel (42) and opens into the cooler (40) or into the reactor (1), for recycling sulfur.

    38.
    发明专利
    未知

    公开(公告)号：AT486057T

    公开(公告)日：2010-11-15

    申请号：AT05761527

    申请日：2005-06-22

    Applicant: BASF SE

    Inventor： KNOESCHE CARSTEN ,  WOELFERT ANDREAS ,  DAISS ANDREAS

    IPC: C07C263/10 ,  C07C265/14

    Abstract: The invention relates to a process for preparing isocyanates by reacting amines with phosgene in the gas phase in a reaction zone, with the reaction mixture being passed through a zone into which a liquid is sprayed to stop the reaction, wherein the reaction mixture is passed through a zone having a reduced flow cross section between the reaction zone and the zone into which the liquid is sprayed.

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