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    Method and device for the two-step production of acrylic acid
    10.
    发明申请
    Method and device for the two-step production of acrylic acid 审中-公开
    用于丙烯酸两步生产的方法和装置

    公开(公告)号：US20060183940A1

    公开(公告)日：2006-08-17

    申请号：US11397574

    申请日：2006-04-05

    申请人： Thomas Buschulte ,  Volker Diehl ,  Bernd Hagen ,  Volker Huth ,  Wolfgang Kasten ,  Peter Schlemmer ,  Axel Schroth

    发明人： Thomas Buschulte ,  Volker Diehl ,  Bernd Hagen ,  Volker Huth ,  Wolfgang Kasten ,  Peter Schlemmer ,  Axel Schroth

    IPC分类号： C07C51/16

    CPC分类号： G01N21/3504 ,  B01J8/001 ,  B01J8/0442 ,  B01J8/0492 ,  B01J2208/00548 ,  B01J2219/0004 ,  B01J2219/00186 ,  B01J2219/00195 ,  B01J2219/00213 ,  B01J2219/00229 ,  B01J2219/00231 ,  C07C45/33 ,  C07C45/34 ,  C07C45/35 ,  C07C51/215 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04

    摘要： α,β-ethylenically unsaturated aldehydes and/or carboxylic acids are prepared by means of a two-stage catalytic gas-phase oxidation in which a gas mixture comprising at least an alkane or alkene having from three to six carbon atoms and oxygen is subjected to a catalytic oxidation reaction, in the first stage (1). Oxygen is added to the gases produced in the first stage (1) and the resulting mixture is introduced into the second stage (2) in which it is subjected to a further catalytic oxidation reaction. In the process of the present invention, a signal which correlates with the oxygen content of the reaction gases before and/or after the addition of oxygen between the first and second stages (1, 2) is generated and the oxygen addition is regulated as a function of the signal. Also provided are an apparatus for regulating a process for preparing α,β-ethylenically unsaturated aldehydes and/or carboxylic acids and an apparatus for preparing these substances using the regulating apparatus of the present invention.

    摘要翻译： α，β-烯属不饱和醛和/或羧酸是通过两阶段催化气相氧化制备的，其中将至少含有3至6个碳原子的烷烃或烯烃的气体混合物和氧气经受 催化氧化反应，在第一阶段（1）。 将氧气加入到第一阶段（1）中产生的气体中，并将​​所得混合物引入其进行进一步催化氧化反应的第二阶段（2）中。 在本发明的方法中，产生与在第一和第二阶段（1,2）之间加入氧气之前和之后的反应气体的氧含量相关的信号，并且将氧气添加调节为 信号功能。 还提供了一种用于调节制备α，β-烯属不饱和醛和/或羧酸的方法的装置，以及使用本发明的调节装置制备这些物质的装置。