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    METHOD FOR PRODUCING PURE XYLYLENEDIAMINE (XDA)
    1.
    发明申请
    METHOD FOR PRODUCING PURE XYLYLENEDIAMINE (XDA) 审中-公开
    用于生产纯二甲胺（XDA）

    公开(公告)号：WO2007088131A3

    公开(公告)日：2007-10-04

    申请号：PCT/EP2007050679

    申请日：2007-01-24

    Applicant: BASF AG ,  HUGO RANDOLF ,  DAHMEN KIRSTEN ,  HUBER SABINE

    Inventor： HUGO RANDOLF ,  DAHMEN KIRSTEN ,  HUBER SABINE

    IPC: C07C209/84 ,  C07C211/27

    CPC classification number: C07C209/84 ,  Y10S203/20 ,  C07C211/27

    Abstract: The invention relates to a method for producing pure xylylenediamine (XDA) by continuous distillation of crude xylylenediamine (XDA) in a column, by using a side stream distillation column, the XDA being drawn off through the lateral discharge and the bottom product of the distillation column being further concentrated in an additional concentration step. The condensate obtained in the concentration step is returned to the side draw distillation column.

    Abstract translation: 一种用于通过与侧使用的蒸馏塔在塔通过将粗间苯二甲胺连续蒸馏制备纯苯二甲胺（XDA）工艺绘制和XDA在侧馏分取出并进一步蒸发，蒸馏塔中的附加蒸发阶段的底部产物和该蒸发阶段中的冷凝液 蒸馏塔返回与侧馏分。

    Production of xylylenediamine by continuous hydrogenation of liquid, comprises mixing device phthalodinitrile as melt/in solid form that is mixed with stream of liquid ammonia and removing additional stream as partial stream
    2.
    发明专利
    Production of xylylenediamine by continuous hydrogenation of liquid, comprises mixing device phthalodinitrile as melt/in solid form that is mixed with stream of liquid ammonia and removing additional stream as partial stream 未知

    公开(公告)号：DE102005036222A1

    公开(公告)日：2007-02-08

    申请号：DE102005036222

    申请日：2005-08-02

    Applicant: BASF AG

    Inventor： HUGO RANDOLF ,  WENZ KIRSTEN ,  HUBER SABINE

    IPC: C07C209/48 ,  C07C209/84 ,  C07C209/86 ,  C07C211/27

    Abstract: The production of xylylene diamine by continuous hydrogenation of liquid, includes mixing device phthalodinitrile as melt/in solid form that is mixed with stream of liquid ammonia and removing additional stream as partial stream from the stream rotating around hydrogenation reactor or mixed with the streams. The mixing device is heated at 1-60[deg]C above the melting point of the phthalodinitrile. The mixture of streams is injected into the device. The liquid mixture of ammonia, phthalodinitrile and xylylene diamine is led into the stream rotating around the hydrogenation reactor. The production of xylylene diamine by continuous hydrogenation of liquid, includes mixing device phthalodinitrile as melt/in solid form that is mixed with stream of liquid ammonia and removing additional stream as partial stream from the stream rotating around hydrogenation reactor or mixed with the streams. The mixing device is heated at 1-60[deg]C above the melting point of the phthalodinitrile. The mixture of streams is injected into the device. The liquid mixture of ammonia, phthalodinitrile and xylylene diamine is led into the stream rotating around the hydrogenation reactor. The rotating stream is composed of larger than 93 wt% of liquid ammonia and xylylene diamine. The phthalodinitrile conversion in the hydrogenation reactor amount is larger than 99.5%. The mixture led into the hydrogenation reactor contains no solvent for phthalodinitrile. The stream rotating around the hydrogenation reactor contains liquid ammonia within the range of 25-90 wt%. A part of a liquid reactor discharge is led back continuously to the reactor entrance as rotating stream, constitutes 20-95 wt.% of the entire liquid reactor discharge. The weight ratio of the fresh phthalodinitrile inlet stream plus ammonia inlet stream to the stream rotating around the hydrogenation reactor lies between 0.05-5. The weight ratio of the feed back partial stream from the reactor discharge to the sum of the fresh phthalodinitrile inlet stream and ammonia inlet stream lies within the range of 2:1-10:1. The hydrogenation is accomplished at 40-150[deg] C, an absolute pressure of 100-300 bar and a manganese-doped complete cobalt catalyst. The catalyst is arranged in a tubular reactor or a bundle tube reactor as fixed bed. The hydrogenation reactor is adiabatically operated in trickle bed. The stream rotating around the hydrogenation reactor in which heat is extracted from a radiator. The hydrogenation reactor is used as a hydrogenation reactor cascade. The purification of the xylylenediamine takes place through distillation of ammonia in which light by-products collected at the top and heavy products collected at the bottom. The xylylenediamine is extracted after the distillation for further purification an organic solvent is added.

    5.
    发明专利
    未知

    公开(公告)号：DE102005045806A1

    公开(公告)日：2007-03-29

    申请号：DE102005045806

    申请日：2005-09-24

    Applicant: BASF AG

    Inventor： WENZ KIRSTEN ,  HUBER SABINE ,  HUGO RANDOLF ,  MELDER JOHANN-PETER ,  PREISS THOMAS

    IPC: C07C209/48 ,  B01J23/70 ,  C07C209/84 ,  C07C209/86 ,  C07C211/27

    Abstract: Process for preparing o-, m- or p-xylylenediamine by hydrogenation of o-, m- or p-phthalonitrile in the presence of a heterogenous catalyst, which comprises feeding a solution of the phthalonitrile in the corresponding isomer of crude xylylenediamine into the hydrogenation reactor, with the crude xylylenediamine having a purity in the range from 85 to 99.7% by weight and a content of higher boilers in the range from 0.3 to 15% by weight.

    Preparation of xylylenediamine comprises continuously hydrogenating phthalodinitrile over a heterogeneous catalyst in the presence of liquid ammonia, where a portion of reactor effluent is recycled continuously to the reactor inlet
    6.
    发明专利
    Preparation of xylylenediamine comprises continuously hydrogenating phthalodinitrile over a heterogeneous catalyst in the presence of liquid ammonia, where a portion of reactor effluent is recycled continuously to the reactor inlet 未知

    公开(公告)号：DE102005058417A1

    公开(公告)日：2007-06-14

    申请号：DE102005058417

    申请日：2005-12-07

    Applicant: BASF AG

    Inventor： RANDOLF HUGO ,  DAHMEN KIRSTEN ,  HUBER SABINE

    IPC: C07C209/48 ,  C07C211/51

    Abstract: Preparation of xylylenediamine by continuously hydrogenating phthalodinitrile over a heterogeneous catalyst in a reactor, in which a portion of the reactor effluent is recycled as a liquid circulation stream continuously to the reactor inlet, comprises mixing phthalodinitrile by a mixing device with a stream of liquid ammonia (stream a) and a further stream that is removed at least as a sub-stream from the circulation stream around the hydrogenation reactor (stream b), or mixing of streams a and b, and conducting the resulting liquid mixture into the hydrogenation reactor. Preparation of xylylenediamine by continuously hydrogenating phthalodinitrile over a heterogeneous catalyst in the presence of liquid ammonia in a reactor, in which a portion of the reactor effluent is recycled as a liquid circulation stream continuously to the reactor inlet (circulation mode), comprises mixing phthalodinitrile, as melt or in solid form, by a mixing device with a stream of liquid ammonia (stream a) and a further stream that is drawn off at least as a sub-stream from the circulation stream around the hydrogenation reactor (stream b), or mixing of streams a and b, and conducting the resulting liquid mixture into the hydrogenation reactor.

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