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    Method for producing acrylic acid
    1.
    发明授权
    Method for producing acrylic acid 有权
    制备丙烯酸的方法

    公开(公告)号：US06433222B1

    公开(公告)日：2002-08-13

    申请号：US09764985

    申请日：2001-01-22

    申请人： Bernd Eck ,  Jörg Heilek ,  Volker Schliephake ,  Theo Proll ,  Klaus Bröllos ,  Otto Machhammer ,  Joachim Thiel

    发明人： Bernd Eck ,  Jörg Heilek ,  Volker Schliephake ,  Theo Proll ,  Klaus Bröllos ,  Otto Machhammer ,  Joachim Thiel

    IPC分类号： C07C5142

    CPC分类号： C07C51/43 ,  C07C57/04

    摘要： A process for the preparation of acrylic acid by: (a) preparation of a gaseous product mixture which essentially has the composition of a reaction mixture of catalytic gas-phase oxidation of C3-alkanes, C3-alkenes, C3-alkanols and/or C3-alkanals and/or intermediates thereof to acrylic acid, which comprises (b) condensation of the gaseous product mixture, (c) crystallization of the acrylic acid from the solution obtained in stage (b), with partial evaporation of the solution under reduced pressure, (d) isolation of the resulting crystals from the mother liquor, (e) recycling of at least a part of the mother liquor from stage (d) to stage (b) and (f) recycling of at least a part of the evaporated solution from stage (c) to stage (b).

    摘要翻译： 一种通过以下方法制备丙烯酸的方法：（a）制备气态产物混合物，其基本上具有C3-烷烃，C3-烯烃，C3-链烷醇和/或C3的催化气相氧化反应混合物的组成 - 烷醇和/或其中间体，其包括（b）气态产物混合物的冷凝，（c）丙烯酸从阶段（b）中获得的溶液中的结晶，在减压下部分蒸发溶液 ，（d）从母液中分离得到的晶体，（e）将至少一部分母液从阶段（d）再循环到阶段（b），和（f）将至少一部分蒸发的 从（c）阶段到（b）阶段的方案。

    Method for producing acrylic acid and methacrylic acid
    3.
    发明授权
    Method for producing acrylic acid and methacrylic acid 有权
    制备丙烯酸和甲基丙烯酸的方法

    公开(公告)号：US06448439B1

    公开(公告)日：2002-09-10

    申请号：US09508084

    申请日：2000-03-13

    申请人： Bernd Eck ,  Otto Machhammer ,  Theo Proll ,  Volker Schliephake ,  Joachim Thiel ,  Klaus Bröllos

    发明人： Bernd Eck ,  Otto Machhammer ,  Theo Proll ,  Volker Schliephake ,  Joachim Thiel ,  Klaus Bröllos

    IPC分类号： C07C5142

    CPC分类号： C07C51/43 ,  C07C57/04

    摘要： A process for preparing acrylic acid or methacrylic acid comprises preparing a gaseous product mixture having essentially the composition of a reaction mixture of the catalytic gas phase oxidation of C3-/C4-alkanes, -alkenes, -alkanols and/or -alkanals and/or precursors thereof to form acrylic acid or methacrylic acid. The product is removed from the gaseous product mixture by a process comprising the following steps: (a) condensing said gaseous product mixture, (b) crystallizing acrylic acid or methacrylic acid from the solution obtained in step (a), (c) removing the resulting crystals from the mother liquor, and (d) recycling at least a portion of said mother liquor from step (c) into step (a).

    摘要翻译： 制备丙烯酸或甲基丙烯酸的方法包括制备气态产物混合物，其基本上具有C3- / C4-烷烃， - 烯烃， - 链烷醇和/或 - 烷烃和/或 - 烷烃的催化气相氧化反应混合物的组成和/或 其前体形成丙烯酸或甲基丙烯酸。 通过包括以下步骤的方法从气态产物混合物中除去产物：（a）冷凝所述气态产物混合物，（b）从步骤（a）中获得的溶液中结晶丙烯酸或甲基丙烯酸，（c） 从母液中得到的晶体，和（d）将来自步骤（c）的所述母液的至少一部分再循环到步骤（a）中。

    Method for the continuous extraction of (meth)acrylic acid
    4.
    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.

    Preparation of acrylic acid
    5.
    发明授权
    Preparation of acrylic acid 有权
    丙烯酸的制备

    公开(公告)号：US06939991B2

    公开(公告)日：2005-09-06

    申请号：US10465613

    申请日：2003-06-20

    申请人： Joachim Thiel ,  Ulrich Hammon ,  Dieter Baumann ,  Jörg Heilek ,  Jürgen Schröder ,  Klaus Joachim Müller-Engel

    发明人： Joachim Thiel ,  Ulrich Hammon ,  Dieter Baumann ,  Jörg Heilek ,  Jürgen Schröder ,  Klaus Joachim Müller-Engel

    IPC分类号： C07C51/44 ,  C07C51/16

    CPC分类号： C07C51/44 ,  C07C57/04

    摘要： In a process for preparing acrylic acid, an acrylic acid-containing product gas mixture obtained by catalytic gas phase partial oxidation of a C3 precursor of acrylic acid, after direct cooling with a quench liquid, is fractionally condensed in a separating column provided with internals, rising into itself with sidestream takeoff of crude acrylic acid, and the acrylic acid oligomers which form are dissociated and the resulting dissociation gas is subjected to a countercurrent rectification before it is recycled.

    摘要翻译： 在制备丙烯酸的方法中，通过催化气相部分氧化丙烯酸C 3 N 3前体在用骤冷液体直接冷却后得到的含丙烯酸的产物气体混合物被分级冷凝 在设置有内部件的分离塔中，由于粗丙烯酸的侧流起飞而上升，形成的丙烯酸低聚物被解离，所得的解离气体在再循环之前经受逆流整流。

    Method for the rectifying separation of fluids containing (meth)acryl monomers
    6.
    发明授权
    Method for the rectifying separation of fluids containing (meth)acryl monomers 有权
    含有（甲基）丙烯酸单体的流体的精馏分离方法

    公开(公告)号：US07520964B2

    公开(公告)日：2009-04-21

    申请号：US10515639

    申请日：2003-07-02

    申请人： Ulrich Hammon ,  Joachim Thiel ,  Volker Schliephake ,  Juergen Schroeder

    发明人： Ulrich Hammon ,  Joachim Thiel ,  Volker Schliephake ,  Juergen Schroeder

    IPC分类号： B01D3/22 ,  B01D3/32

    CPC分类号： B01D3/22 ,  B01D3/225 ,  C07C51/44 ,  Y10S203/11 ,  Y10S203/22 ,  C07C57/04

    摘要： A process for rectificatively separating at least one (meth)acrylic monomer-containing fluid by feeding the fluid into a rectification column containing at least one sieve tray without a runoff segment, wherein an elementary cell is obtained from a number of centers of passages in a sieve tray, and the cell shifts regularly and repeatedly along its edges, the lengths of two shifting vectors being the lengths of the edges of the cell along which the shifting is effected; an arrangement of the centers is such that the positions of an ideal center and a real center are separated by ≦1% of half of the sum of the lengths of the two shifting vectors; and an arrangement of the passages is such that the sum of non-overlapping surface areas of an ideal passage with a real passage and vice versa is ≦1% of the surface area of the ideal passage.

    摘要翻译： 将含有至少一种（甲基）丙烯酸系单体的流体通过将流体供给至含有至少一个不具有径流段的多孔塔的精馏塔的方法，其中从多个通道中心获得基本单元， 筛板，并且单元沿其边缘规则地且重复地移动，两个移动向量的长度是实现移位的单元的边缘的长度; 中心的布置使得理想中心和实心的位置被两个移位矢量的长度之和的一半的<= 1％分开; 并且通道的布置使得理想通道的非重叠表面面积与实际通道的总和相反，<=理想通道的表面积的1％。