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    Process for the preparation of isocyanates in the gas phase
    1.
    发明授权
    Process for the preparation of isocyanates in the gas phase 有权
    在气相中制备异氰酸酯的方法

    公开(公告)号：US09024057B2

    公开(公告)日：2015-05-05

    申请号：US12632117

    申请日：2009-12-07

    申请人： Klaus Biskup ,  Rainer Bruns ,  Wolfgang Lorenz ,  Fritz Pohl ,  Friedhelm Steffens ,  Volker Michele

    发明人： Klaus Biskup ,  Rainer Bruns ,  Wolfgang Lorenz ,  Fritz Pohl ,  Friedhelm Steffens ,  Volker Michele

    IPC分类号： C07C263/00 ,  C07C263/10

    CPC分类号： C07C263/10 ,  C07C265/14

    摘要： Aromatic isocyanates are produced by reacting one or more aromatic primary amines with phosgene in the gas phase. The phosgene and primary aromatic amine(s) are reacted at a temperature above the boiling temperature of the amine(s) in a reactor having a reaction space which is essentially rotationally symmetric to the direction of flow. The flow fate, averaged over the cross-section, of the reaction mixture along the axis of the essentially rotationally symmetric reaction space in the section of the reaction space in which the conversion of the amine groups into isocyanate groups is between 4 and 80% is not more than 8 m/sec. The flow rate averaged over the cross-section of the reaction mixture along the axis of the essentially rotationally symmetric reaction space in the section of the reaction space in which the conversion of the amine groups into isocyanate groups is 4 to 80% is always below the flow rate averaged over the cross-section at the start of this section.

    摘要翻译： 通过一种或多种芳族伯胺与气相中的光气反应制备芳族异氰酸酯。 光气和伯芳基胺在具有反应空间的反应器中在高于胺的沸点温度的温度下反应，反应空间基本上与流动方向旋转对称。 反应混合物沿着反应空间部分中基本上旋转对称的反应空间轴线的横截面平均流动，其中胺基转化为异氰酸酯基的反应空间为4-80％ 不超过8米/秒。 反应混合物的横截面上的平均流量在反应空间的基本上旋转对称的反应空间的轴上，其中胺基转化为异氰酸酯基团的部分总是低于 在本节开头的横截面上平均流量。

    PROCESS FOR THE PREPARATION OF ISOCYANATES IN THE GAS PHASE
    2.
    发明申请
    PROCESS FOR THE PREPARATION OF ISOCYANATES IN THE GAS PHASE 有权
    在气相中制备异氰酸酯的方法

    公开(公告)号：US20100152484A1

    公开(公告)日：2010-06-17

    申请号：US12632117

    申请日：2009-12-07

    申请人： Klaus Biskup ,  Rainer Bruns ,  Wolfgang Lorenz ,  Fritz Pohl ,  Friedhelm Steffens ,  Volker Michele

    发明人： Klaus Biskup ,  Rainer Bruns ,  Wolfgang Lorenz ,  Fritz Pohl ,  Friedhelm Steffens ,  Volker Michele

    IPC分类号： C07C263/10

    CPC分类号： C07C263/10 ,  C07C265/14

    摘要： Aromatic isocyanates are produced by reacting one or more aromatic primary amines with phosgene in the gas phase. The phosgene and primary aromatic amine(s) are reacted at a temperature above the boiling temperature of the amine(s) in a reactor having a reaction space which is essentially rotationally symmetric to the direction of flow. The flow fate, averaged over the cross-section, of the reaction mixture along the axis of the essentially rotationally symmetric reaction space in the section of the reaction space in which the conversion of the amine groups into isocyanate groups is between 4 and 80 % is not more than 8 m/sec. The flow rate averaged over the cross-section of the reaction mixture along the axis of the essentially rotationally symmetric reaction space in the section of the reaction space in which the conversion of the amine groups into isocyanate groups is 4 to 80 % is always below the flow rate averaged over the cross-section at the start of this section.

    摘要翻译： 通过一种或多种芳族伯胺与气相中的光气反应制备芳族异氰酸酯。 光气和伯芳基胺在具有反应空间的反应器中在高于胺的沸点温度的温度下反应，反应空间基本上与流动方向旋转对称。 反应混合物沿着反应空间部分中基本上旋转对称的反应空间轴线的横截面平均流动，其中胺基转化为异氰酸酯基的反应空间为4-80％ 不超过8米/秒。 反应混合物的横截面上的平均流量在反应空间的基本上旋转对称的反应空间的轴上，其中胺基转化为异氰酸酯基团的部分总是低于 在本节开头的横截面上平均流量。

    Process for the preparation of isocyanates
    6.
    发明授权
    Process for the preparation of isocyanates 有权
    异氰酸酯的制备方法

    公开(公告)号：US08563768B2

    公开(公告)日：2013-10-22

    申请号：US13382615

    申请日：2010-06-26

    申请人： Rainer Bruns ,  Wolfgang Lorenz ,  Friedhelm Steffens ,  Herbert Stutz

    发明人： Rainer Bruns ,  Wolfgang Lorenz ,  Friedhelm Steffens ,  Herbert Stutz

    IPC分类号： C07C263/10

    CPC分类号： C07C263/10 ,  C01B32/80 ,  C07C265/14

    摘要： An isocyanate is produced by reacting an amine with a stoichiometric excess of phosgene in the gas phase. This reaction is carried out at a temperature above the amine's boiling point to obtain a liquid stream containing the isocyanate and a gas stream containing hydrogen chloride and phosgene. The gas stream containing hydrogen chloride and phosgene thus produced is separated into a gas stream containing hydrogen chloride and a liquid stream containing phosgene. At least part of the liquid stream containing phosgene is then converted to a gas stream containing phosgene which gas stream is then recycled. The gaseous phosgene stream is maintained at a higher pressure than the liquid phosgene stream.

    摘要翻译： 通过在气相中使胺与化学计量过量的光气反应来制备异氰酸酯。 该反应在高于胺沸点的温度下进行，得到含有异氰酸酯和含有氯化氢和光气的气流的液体流。 将由此产生的含有氯化氢和光气的气流分离成含有氯化氢的气流和含有光气的液体流。 然后将含有光气的液体物流的至少一部分转化成含有光气的气流，然后将气流再循环。 气态光气流保持在比液体光气流更高的压力下。

    PROCESS FOR THE PREPARATION OF ISOCYANATES
    7.
    发明申请
    PROCESS FOR THE PREPARATION OF ISOCYANATES 有权
    制备异氰酸酯的方法

    公开(公告)号：US20120123152A1

    公开(公告)日：2012-05-17

    申请号：US13382615

    申请日：2010-06-26

    申请人： Rainer Bruns ,  Wolfgang Lorenz ,  Friedhelm Steffens ,  Herbert Stutz

    发明人： Rainer Bruns ,  Wolfgang Lorenz ,  Friedhelm Steffens ,  Herbert Stutz

    IPC分类号： C07C263/10

    CPC分类号： C07C263/10 ,  C01B32/80 ,  C07C265/14

    摘要： An isocyanate is produced by reacting an amine with a stoichiometric excess of phosgene in the gas phase. This reaction is carried out at a temperature above the amine's boiling point to obtain a liquid stream containing the isocyanate and a gas stream containing hydrogen chloride and phosgene. The gas stream containing hydrogen chloride and phosgene thus produced is separated into a gas stream containing hydrogen chloride and a liquid stream containing phosgene. At least part of the liquid stream containing phosgene is then converted to a gas stream containing phosgene which gas stream is then recycled. The gaseous phosgene stream is maintained at a higher pressure than the liquid phosgene stream.

    摘要翻译： 通过在气相中使胺与化学计量过量的光气反应来制备异氰酸酯。 该反应在高于胺沸点的温度下进行，得到含有异氰酸酯和含有氯化氢和光气的气流的液体流。 将由此产生的含有氯化氢和光气的气流分离成含有氯化氢的气流和含有光气的液体流。 然后将含有光气的液体物流的至少一部分转化成含有光气的气流，然后将气流再循环。 气态光气流保持在比液体光气流更高的压力下。