PROCESS FOR LONG-TERM OPERATION OF A HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF PROPENE TO ACROLEIN
    9.
    发明申请
    PROCESS FOR LONG-TERM OPERATION OF A HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF PROPENE TO ACROLEIN 有权
    长时间操作异构催化部分气相氧化丙烯的方法

    公开(公告)号:US20120095267A1

    公开(公告)日:2012-04-19

    申请号:US13271448

    申请日:2011-10-12

    IPC分类号: C07C45/28

    CPC分类号: C07C45/35 C07C47/22

    摘要: A process for long-term operation of a heterogeneously catalyzed partial gas phase oxidation of propene to acrolein, in which the propene present in the reaction gas input mixture is partially oxidized as this gas mixture passes through the fixed catalyst bed which is accommodated in two spatially successive temperature zones A, B, and, in long-term operation, as a measure to counteract the reduction in the quality of the fixed catalyst bed, the temperature of at least one of the two temperature zones is increased such that the difference TB−TA becomes increasingly greater, where TB is the temperature of temperature zone B, and TA the temperature of temperature zone A.

    摘要翻译: 长期运行丙烯到丙烯醛的非均相催化的部分气相氧化丙烯醛的方法,其中存在于反应气体输入混合物中的丙烯被部分氧化,因为该气体混合物通过固定的催化剂床,该催化剂床容纳在空间上 连续的温度区域A,B,并且在长期运行中,作为抵消固定催化剂床的质量降低的措施,两个温度区域中的至少一个的温度增加,使得TB- TA变得越来越大,其中TB是温度区B的温度,TA是温度区A的温度。