Method for producing acrolein and/or acrylic acid
    1.
    发明授权
    Method for producing acrolein and/or acrylic acid 有权
    制备丙烯醛和/或丙烯酸的方法

    公开(公告)号:US07321058B2

    公开(公告)日:2008-01-22

    申请号:US10297579

    申请日:2001-06-13

    IPC分类号: C07C51/16 C07C51/42

    摘要: Acrolein and/or acrylic acid are prepared from propane and/or propene by a process comprising the following steps: (a) separation of propane and/or propene from a propane- and/or propene-containing gas mixture by absorption in an absorbent, (b) separation of the propane and/or propene from the absorbent to give a gas B and (c) use of the gas B obtained in stage (b) for an oxidation of propane and/or propene to acrolein and/or acrylic acid, no heterogeneously catalyzed dehydrogenation of propane without supply of oxygen being carried out between steps (b) and (c).

    摘要翻译: 通过包括以下步骤的方法由丙烷和/或丙烯制备丙烯醛和/或丙烯酸:(a)通过吸收吸收剂中的丙烷和/或丙烯的气体混合物分离丙烷和/或丙烯, (b)从吸收剂中分离丙烷和/或丙烯以产生气体B,和(c)使用阶段(b)中获得的气体B将丙烷和/或丙烯氧化成丙烯醛和/或丙烯酸 在步骤(b)和(c)之间不进行不供应氧气的丙烷的异质催化脱氢。

    Preparation of acrolein or acrylic acid or a mixture thereof from propane
    5.
    发明申请
    Preparation of acrolein or acrylic acid or a mixture thereof from propane 有权
    从丙烷制备丙烯醛或丙烯酸或其混合物

    公开(公告)号:US20060004226A1

    公开(公告)日:2006-01-05

    申请号:US11131248

    申请日:2005-05-18

    IPC分类号: C07C51/25

    摘要: A process for preparing acrolein or acrylic acid or a mixture thereof from propane, in which the propane is initially dehydrogenated under heterogeneous catalysis to give propene, secondary components are removed and the remaining gas mixture, comprising propane and propene, is subjected to the heterogeneously catalyzed partial oxidation to acrolein or acrylic acid or a mixture thereof as the target product, target product is removed from the product gas mixture and the remaining residual gas, comprising excess oxygen and unconverted propane, is recycled into the propane dehydrogenation in such a way that the other propane fed to the dehydrogenation is at least partly converted under dehydrogenating conditions at the recycle point.

    摘要翻译: 从丙烷制备丙烯醛或丙烯酸或其混合物的方法,其中丙烷最初在非均相催化下脱氢以得到丙烯,次要组分被除去,剩余的包含丙烷和丙烯的气体混合物经历非均相催化 部分氧化成丙烯醛或丙烯酸或其混合物作为目标产物,将目标产物从产物气体混合物中除去,剩余的包含过量氧气和未转化的丙烷的残余气体以这样的方式循环到丙烷脱氢中: 进料到脱氢的其它丙烷在再循环点的脱氢条件下至少部分转化。

    Preparation of acrolein or acrylic acid or a mixture thereof from propane
    6.
    发明授权
    Preparation of acrolein or acrylic acid or a mixture thereof from propane 有权
    从丙烷制备丙烯醛或丙烯酸或其混合物

    公开(公告)号:US07388109B2

    公开(公告)日:2008-06-17

    申请号:US11131248

    申请日:2005-05-18

    IPC分类号: C07C51/16

    摘要: A process for preparing acrolein or acrylic acid or a mixture thereof from propane, in which the propane is initially dehydrogenated under heterogeneous catalysis to give propene, secondary components are removed and the remaining gas mixture, comprising propane and propene, is subjected to the heterogeneously catalyzed partial oxidation to acrolein or acrylic acid or a mixture thereof as the target product, target product is removed from the product gas mixture and the remaining residual gas, comprising excess oxygen and unconverted propane, is recycled into the propane dehydrogenation in such a way that the other propane fed to the dehydrogenation is at least partly converted under dehydrogenating conditions at the recycle point.

    摘要翻译: 从丙烷制备丙烯醛或丙烯酸或其混合物的方法,其中丙烷最初在非均相催化下脱氢以得到丙烯,次要组分被除去,剩余的包含丙烷和丙烯的气体混合物经历非均相催化 部分氧化成丙烯醛或丙烯酸或其混合物作为目标产物,将目标产物从产物气体混合物中除去,剩余的包含过量氧气和未转化的丙烷的残余气体以这样的方式循环到丙烷脱氢中: 进料到脱氢的其它丙烷在再循环点的脱氢条件下至少部分转化。

    Method for the continuous extraction of (meth)acrylic acid
    7.
    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

    IPC分类号: C07C51/42

    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.