Process for the production of isocyanates in the gas phase
    1.
    发明授权
    Process for the production of isocyanates in the gas phase 有权
    在气相中生产异氰酸酯的方法

    公开(公告)号:US06803482B2

    公开(公告)日:2004-10-12

    申请号:US10437509

    申请日:2003-05-14

    IPC分类号: C07C11800

    CPC分类号: C07C263/10 C07C265/14

    摘要: Isocyanates are produced in the gas phase in a manner such that temperature fluctuations over time and temperature distribution asymmetry are prevented. In this improved process, performance of the reaction in tubular reactors is accomplished by flow-related measures such as homogenization and centering of the educt streams. The formation of polymeric secondary products, which result in baked-on deposits in the reactor and a reduction in reactor service life, is consequently prevented.

    摘要翻译: 在气相中产生异氰酸酯,使得可以防止随时间的温度波动和温度分布不对称性。 在这种改进的方法中,管式反应器中的反应的性能通过流动相关的测量来实现,例如匀浆和离心流的对中。 因此,防止了在反应器中产生烘烤沉积并降低反应器使用寿命的聚合二次产物的形成。