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    Process for the preparation of isocyanates in the gas phase
    2.
    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

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

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

    IPC: C07C263/00 ,  C07C263/10

    CPC classification number: C07C263/10 ,  C07C265/14

    Abstract: 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.

    Abstract translation: 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。

    Method of liquid-liquid extraction using material exchange columns
    3.
    发明授权
    Method of liquid-liquid extraction using material exchange columns 失效
    使用材料交换柱进行液 - 液萃取的方法

    公开(公告)号：US4732685A

    公开(公告)日：1988-03-22

    申请号：US914223

    申请日：1986-10-02

    Applicant: Hans-Walter Brandt ,  Friedhelm Steffens ,  Johannes-Peter Schafer ,  Jurgen Schroter

    Inventor： Hans-Walter Brandt ,  Friedhelm Steffens ,  Johannes-Peter Schafer ,  Jurgen Schroter

    IPC: B01D11/04 ,  B01J19/32

    CPC classification number: B01J19/325 ,  B01D11/043

    Abstract: With the extraction method, a material exchange column with an ordered packing 2a or 2b on the basis of a plurality of layers 3 stacked parallel to the column axis and making point contact with one another is used. The packing 2a, 2b is perfused by a continuous and a dispersed phase in a counter current. The packing has a very large specific surface area of at least 300 m.sup.2 /m.sup.3 of packing volume. At the periphery of the packing 2a, 2b, the two phase streams are re-circulated into the packing at regular intervals through a rim seal composed of an elastic material not wettable by the dispersed phase. The rim seal is placed round the packing in the form of an elastic tube or pipe and seals the intermediate space between the internal column wall and the packing. A further improvement in the separating capacity can be achieved if pulsating operation is adopted. The method is characterized, in particular, in that an approximately constant high separating capacity is achieved with a high throughput per unit area over a relatively large loading tolerance of the column.

    Abstract translation: 使用提取方法，使用具有有序填料2a或2b的材料交换柱，其基于平行于柱轴线并且彼此点接触的多个层3。 包装2a，2b由逆流中的连续分散相灌注。 填料具有非常大的比表面积至少为300m 2 / m 3的包装体积。 在包装2a，2b的周围，两相流通过由不能被分散相润湿的弹性材料构成的边缘密封圈以规则的间隔再次循环到包装中。 轮辋密封件以弹性管或管的形式放置在填料周围，并密封内部柱壁和填料之间的中间空间。 如果采用脉动操作，则可以进一步提高分离能力。 该方法的特征在于，在柱的相对大的负载公差下，在每单位面积的高通量下实现大致恒定的高分离能力。

    PROCESS FOR THE PREPARATION OF ISOCYANATES IN THE GAS PHASE
    4.
    发明申请
    PROCESS FOR THE PREPARATION OF ISOCYANATES IN THE GAS PHASE 审中-公开
    在气相中制备异氰酸酯的方法

    公开(公告)号：US20100160673A1

    公开(公告)日：2010-06-24

    申请号：US12636850

    申请日：2009-12-14

    Applicant: Rainer Bruns ,  Fritz Pohl ,  Friedhelm Steffens ,  Volker Michele

    Inventor： Rainer Bruns ,  Fritz Pohl ,  Friedhelm Steffens ,  Volker Michele

    IPC: C07C263/10

    CPC classification number: C07C263/10 ,  B01F7/00916 ,  B01F13/08 ,  B01J4/002 ,  B01J19/18 ,  B01J19/1812 ,  B01J2219/00123 ,  B01J2219/00252 ,  B01J2219/00254 ,  B01J2219/192 ,  B01J2219/1947 ,  C07C2601/16 ,  C07C265/14

    Abstract: Primary isocyanates are produced by reacting the corresponding primary amine(s) with phosgene at a temperature above the boiling temperature of the amine(s) in a tube reactor with a reaction space. In this tube reactor, at least one educt stream P containing phosgene and at least one educt stream A containing the amine(s) are fed to the reaction space via a nozzle arrangement. The nozzle arrangement includes a number of n≧1 nozzles aligned parallel to the axis of rotation of the tube reactor and a free space surrounding the nozzles. One of the educt streams A or P is fed to the reaction space via the nozzles and the other educt stream is fed to the reaction space via the free space surrounding the nozzles. The reaction space contains at least one moving mixing device.

    Abstract translation: 通过在具有反应空间的管式反应器中，在高于胺的沸点温度的温度下使相应的伯胺与光气反应来制备初级异氰酸酯。 在该管式反应器中，含有光气的至少一个喷射流P和含有胺的至少一个喷射流A通过喷嘴装置进料至反应空间。 喷嘴装置包括平行于管式反应器的旋转轴线排列的多个n≥1个喷嘴和围绕喷嘴的自由空间。 一个喷射流A或P通过喷嘴被供给到反应空间，另一个喷射流通过喷嘴周围的自由空间被供给到反应空间。 反应空间包含至少一个移动混合装置。

    PROCESS FOR THE PREPARATION OF ISOCYANATES IN THE GAS PHASE
    5.
    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

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

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

    IPC: C07C263/10

    CPC classification number: C07C263/10 ,  C07C265/14

    Abstract: 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.

    Abstract translation: 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。

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