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    Preparation of acrylic acid
    1.
    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。

    Process for continuously removing a target product X in the form of fine crystals
    2.
    发明授权
    Process for continuously removing a target product X in the form of fine crystals 有权
    连续除去细晶体形式的目标产物X的方法

    公开(公告)号：US07999120B2

    公开(公告)日：2011-08-16

    申请号：US12209594

    申请日：2008-09-12

    申请人： Jörg Heilek ,  Peter Schlemmer ,  Ulrich Hammon ,  Klaus Joachim Müller-Engel

    发明人： Jörg Heilek ,  Peter Schlemmer ,  Ulrich Hammon ,  Klaus Joachim Müller-Engel

    IPC分类号： C07D227/00 ,  C07C51/43 ,  C07C7/14

    CPC分类号： B01D9/0013 ,  B01D9/0045 ,  B01D9/0063 ,  C07C51/43 ,  C07C57/04

    摘要： A process for continuously removing a target product X in the form of fine crystals from a liquid phase P comprising the target product X and constituents other than the target product X by cooling suspension crystallization in the secondary chamber, into which the liquid phase P flows continuously, of an indirect heat exchanger with simultaneous continuous flow of a coolant through the primary chamber of the indirect heat exchanger and continuous withdrawal of a crystal suspension S having a degree of crystallization Y from the secondary chamber, in which the degree of crystallization Y is adjusted on the basis of a heat balance conducted continuously with the aid of a process computer.

    摘要翻译： 从液相P连续除去来自包含目标产物X的液相P和除了目标产物X以外的成分的微晶形式的目标产物X的方法，通过冷却液相P连续流入的二次室中的悬浮液结晶 的间接热交换器，其通过间接热交换器的主室同时连续流动冷却剂，并且从二级室连续取出具有结晶度Y的晶体悬浮液S，其中结晶度Y被调节 基于在过程计算机的帮助下连续进行的热平衡。

    Method for producing acrylic acid
    6.
    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。

    Regulation of a wash column in a melt crystallization process
    8.
    发明授权
    Regulation of a wash column in a melt crystallization process 有权
    在熔融结晶过程中调节洗涤柱

    公开(公告)号：US07323016B2

    公开(公告)日：2008-01-29

    申请号：US10333721

    申请日：2001-07-27

    申请人： Jörg Heilek ,  Bernd Eck ,  Dieter Baumann

    发明人： Jörg Heilek ,  Bernd Eck ,  Dieter Baumann

    IPC分类号： C30B7/08

    CPC分类号： C07C51/43 ,  B01D9/0013 ,  B01D9/0036 ,  B01D9/004 ,  B01D9/0045 ,  C07C51/47 ,  C07C57/04

    摘要： The present invention relates to the use of an optical line detector for regulating the position of the wash front and/or of the build-up front of the crystal bed of a wash column in a melt crystallization process and a corresponding regulation method. The line detector, for example a CCD camera or a linear array of reflection probes, is arranged in such a way that optical properties of the crystal bed can be detected continuously in a region running parallel to the longitudinal axis of the wash column, this region covering the desired setpoint position of the wash front or of the build-up front.

    摘要翻译： 本发明涉及一种光线路检测器，用于在熔融结晶过程和相应的调节方法中调节洗涤柱的洗涤前沿和/或洗涤塔的积层前沿的位置。 线检测器，例如CCD照相机或反射探针的线性阵列被布置成使得可以在平行于洗涤塔的纵向轴线的区域中连续检测晶体床的光学性质，该区域 覆盖洗涤前部或堆积前部的所需设定点位置。