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    Method for the continuous extraction of (meth)acrylic acid
    6.
    发明授权
    Method for the continuous extraction of (meth)acrylic acid 失效
    连续萃取（甲基）丙烯酸的方法

    公开(公告)号：US07109374B2

    公开(公告)日：2006-09-19

    申请号：US10473102

    申请日：2002-03-28

    申请人： Otto Machhammer ,  Christoph Adami ,  Claus Hechler ,  Juergen Schroeder ,  Volker Schliephake ,  Joachim Thiel ,  Volker Diehl

    发明人： Otto Machhammer ,  Christoph Adami ,  Claus Hechler ,  Juergen Schroeder ,  Volker Schliephake ,  Joachim Thiel ,  Volker Diehl

    IPC分类号： C07C51/42

    CPC分类号： C07C51/44 ,  B01D3/225 ,  C07C51/48 ,  C07C57/04

    摘要： A process for the continuous recovery of (meth)acrylic acid from the reaction gas of a catalytic gas-phase oxidation comprising the following process stages is proposed: I quenching of the reaction gas by evaporative cooling using a high-boiling solvent, II separation of the (meth)acrylic acid from the quenched reaction gas by absorption into the high-boiling solvent, III separation of the solvent laden with (meth)acrylic acid by rectification into a first part-stream IIIA), which contains predominantly (meth)acrylic acid, and into a second part-stream IIIB) which contains predominantly the solvent, IV recycling of the stream IIIB) to process stage II and V distillative production of (meth)acrylic acid from stream IIIA), all liquid residual streams obtained in process stage V being recycled to process stage I.

    摘要翻译： 提出了从包括以下工艺步骤的催化气相氧化反应气体连续回收（甲基）丙烯酸的方法：I通过使用高沸点溶剂的蒸发冷却来淬灭反应气体，II分离 （甲基）丙烯酸通过吸收进入高沸点溶剂从淬灭的反应气体中分离，III分离含有（甲基）丙烯酸的溶剂通过精馏分离成第一部分流IIIA），其主要含有（甲基）丙烯酸 酸，并且进入第二部分流IIIB），其主要包含溶剂，IVB流的再循环），以处理从流IIIA进行的步骤II和V蒸馏生产（甲基）丙烯酸），所有在过程中获得的液体残余流 第五阶段被回收到处理阶段I.

    Separation of (meth)acrylic acid from the reaction gas mixture formed in the catalytic gas phase oxidation of C.sub.3 /C.sub.4 compounds
    7.
    发明授权
    Separation of (meth)acrylic acid from the reaction gas mixture formed in the catalytic gas phase oxidation of C.sub.3 /C.sub.4 compounds 失效
    在C3 / C4化合物的催化气相氧化中形成的反应气体混合物中分离（甲基）丙烯酸

    公开(公告)号：US5780679A

    公开(公告)日：1998-07-14

    申请号：US541425

    申请日：1995-10-10

    申请人： Horst Egly ,  Volker Diehl ,  Klaus Jorg

    发明人： Horst Egly ,  Volker Diehl ,  Klaus Jorg

    IPC分类号： C07C57/05 ,  C07C51/42 ,  C07C51/48 ,  C07C57/07

    CPC分类号： C07C51/48

    摘要： A process for the separation of (meth)acrylic acid from the reaction gas mixture formed in the catalytic gas phase oxidation by countercurrent absorption using a high-boiling inert hydrophobic organic liquid, in which the reaction gas mixture is passed through an absorption column countercurrently to the descending high-boiling inert hydrophobic organic liquid and (meth)acrylic acid is subsequently fractionally separated from the liquid effluent leaving the absorption column and containing (meth)acrylic acid, wherein a rectifying process is superimposed on the absorption process occurring naturally in the absorption column by removing a quantity of energy from the absorption column which exceeds its natural energy loss resulting from contact with the ambient atmosphere.

    摘要翻译： 一种通过使用高沸点惰性疏水性有机液体通过逆流吸收在催化气相氧化中形成的反应气体混合物中分离（甲基）丙烯酸的方法，其中使反应气体混合物逆流地通过吸收塔 然后将下降的高沸点惰性疏水性有机液体和（甲基）丙烯酸从离开吸收塔的液体流出物分离，并含有（甲基）丙烯酸，其中整流过程叠加在吸收过程中天然存在的吸收 通过从吸收塔去除超过其与环境大气接触导致的自然能量损失的能量的一部分柱。