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    Process for long-term operation of a heterogeneously catalyzed partial gas phase oxidation of propene to acrolein
    22.
    发明授权
    Process for long-term operation of a heterogeneously catalyzed partial gas phase oxidation of propene to acrolein 有权
    长期运行丙烯醛异丙烯催化部分气相氧化丙烯的方法

    公开(公告)号：US08618336B2

    公开(公告)日：2013-12-31

    申请号：US13271448

    申请日：2011-10-12

    申请人： Josef Macht ,  Klaus Joachim Mueller-Engel ,  Frank Rosowski

    发明人： Josef Macht ,  Klaus Joachim Mueller-Engel ,  Frank Rosowski

    IPC分类号： C07C45/28

    CPC分类号： C07C45/35 ,  C07C47/22

    摘要： A process for long-term operation of a heterogeneously catalyzed partial gas phase oxidation of propene to acrolein, in which the propene present in the reaction gas input mixture is partially oxidized as this gas mixture passes through the fixed catalyst bed which is accommodated in two spatially successive temperature zones A, B, and, in long-term operation, as a measure to counteract the reduction in the quality of the fixed catalyst bed, the temperature of at least one of the two temperature zones is increased such that the difference TB−TA becomes increasingly greater, where TB is the temperature of temperature zone B, and TA the temperature of temperature zone A.

    摘要翻译： 长期运行丙烯到丙烯醛的非均相催化的部分气相氧化丙烯醛的方法，其中存在于反应气体输入混合物中的丙烯被部分氧化，因为该气体混合物通过固定的催化剂床，该催化剂床容纳在空间上 连续的温度区域A，B，并且在长期运行中，作为抵消固定催化剂床的质量降低的措施，两个温度区域中的至少一个的温度增加，使得TB- TA变得越来越大，其中TB是温度区B的温度，TA是温度区A的温度。

    Process for starting up a separating process for purifying removal of acrylic acid crystals from a suspension S of crystals thereof in mother liquor
    23.
    发明授权
    Process for starting up a separating process for purifying removal of acrylic acid crystals from a suspension S of crystals thereof in mother liquor 有权
    用于启动分离过程的方法，用于从母液中的晶体的悬浮液S中纯化除去丙烯酸晶体

    公开(公告)号：US08461383B2

    公开(公告)日：2013-06-11

    申请号：US12897199

    申请日：2010-10-04

    申请人： Joerg Heilek ,  Dirk Litters ,  Klaus Joachim Mueller-Engel

    发明人： Joerg Heilek ,  Dirk Litters ,  Klaus Joachim Mueller-Engel

    IPC分类号： C07C51/43

    CPC分类号： C07C51/43 ,  C07C51/47 ,  C07C57/04

    摘要： A process for starting up a separating process for purifying removal of acrylic acid crystals from a suspension S of crystals thereof in mother liquor with a hydraulic wash column which has a crystal melt circuit including crystal melt space, and a process space and a distributor space which are separated by an end with passages connecting the two spaces, in which the crystal bed is formed for the first time by first filling the crystal melt circuit and, at least partly, the process space with an acrylic acid-comprising startup liquid whose acrylic acid crystal formation temperature is less than or equal to the temperature of the suspension S increased by 15° C., and then continuing the filling of the wash column with the suspension S and optionally with control liquor until the difference between the pressure in the crystal melt space and the pressure in the distributor space falls suddenly, the arithmetic mean of the total waste liquor flow flowing through the filters of the filter tubes of the wash column until this time, based on the area of all filters, being not more than 80 m3/(m2·h).

    摘要翻译： 一种用于利用具有包括晶体熔融空间的晶体熔融回路的液压洗涤柱从母液中的晶体悬浮液S中纯化除去丙烯酸晶体的分离过程的工艺，以及工艺空间和分配器空间， 通过连接两个空间的通道分开一端，其中通过首先填充晶体熔融回路并且至少部分地与包含丙烯酸的启动液体的工艺空间首次形成晶体床，其中丙烯酸 晶体形成温度小于或等于悬浮液S的温度升高15℃，然后用悬浮液S和任选地与对照液体继续填充洗涤柱，直到晶体熔体中的压力差 空间和分配器空间中的压力突然下降，流过滤器过滤器的总废液流的算术平均值 根据所有过滤器的面积，直到此时为止，洗涤塔的管子不超过80立方米/（m2·h）。

    PROCESS FOR PREPARING ACRYLIC ACID FROM METHANOL AND ACETIC ACID
    25.
    发明申请
    PROCESS FOR PREPARING ACRYLIC ACID FROM METHANOL AND ACETIC ACID 有权
    从甲醇和乙酸制备丙烯酸的方法

    公开(公告)号：US20120071688A1

    公开(公告)日：2012-03-22

    申请号：US13233560

    申请日：2011-09-15

    申请人： Stefanie HERZOG ,  Stefan Altwasser ,  Klaus Joachim Mueller-Engel

    发明人： Stefanie HERZOG ,  Stefan Altwasser ,  Klaus Joachim Mueller-Engel

    IPC分类号： C07C57/04 ,  C07C51/36

    CPC分类号： C07C45/38 ,  B01J23/002 ,  B01J23/881 ,  B01J27/198 ,  B01J35/0006 ,  B01J35/023 ,  B01J37/0009 ,  B01J37/0045 ,  B01J2523/00 ,  C07B2200/05 ,  C07C51/353 ,  C07C51/44 ,  C07C57/04 ,  C07C47/04 ,  B01J2523/51 ,  B01J2523/55 ,  B01J2523/842

    摘要： A process for preparing acrylic acid from methanol and acetic acid, in which, in a reaction zone A, the methanol is partially oxidized to formaldehyde in a heterogeneously catalyzed gas phase reaction, the product gas mixture A obtained and an acetic acid source are used to obtain a reaction gas input mixture B which comprises acetic acid and formaldehyde and has the acetic acid in excess over the formaldehyde, and the formaldehyde present in reaction gas input mixture B is aldol-condensed to acrylic acid under heterogeneous catalysis in a reaction zone B with acetic acid present in reaction gas input mixture B, and unconverted acetic acid still present alongside the acrylic acid target product in the product gas mixture B obtained is removed therefrom, and the acetic acid removed is recycled into the production of reaction gas input mixture B.

    摘要翻译： 一种从甲醇和乙酸制备丙烯酸的方法，其中在反应区A中甲醇在异质催化气相反应中部分氧化成甲醛，得到的产物气体混合物A和乙酸源用于 得到包含乙酸和甲醛并且乙酸超过甲醛的反应气体输入混合物B，反应气体输入混合物B中存在的甲醛在反应区B内的非均相催化下醛醇缩合成丙烯酸， 存在于反应气体输入混合物B中的乙酸和从得到的产物气体混合物B中仍然存在于丙烯酸目标产物旁边的未转化的乙酸，将除去的乙酸循环到反应气体输入混合物B的生产中。

    Process for operating a continuous removal of a target product X in the form of fine crystals of the target product X
    26.
    发明授权
    Process for operating a continuous removal of a target product X in the form of fine crystals of the target product X 有权
    用于以目标产物X的细晶体的形式连续移除靶产物X的方法

    公开(公告)号：US08106240B2

    公开(公告)日：2012-01-31

    申请号：US12208559

    申请日：2008-09-11

    申请人： Joerg Heilek ,  Ulrich Hammon ,  Klaus Joachim Mueller-Engel

    发明人： Joerg Heilek ,  Ulrich Hammon ,  Klaus Joachim Mueller-Engel

    IPC分类号： C07C51/42

    CPC分类号： B01D9/0009 ,  B01D9/0013 ,  B01D9/005 ,  B01D9/0063 ,  C07C51/43 ,  C07C57/04

    摘要： A process for operating a continuous removal of a target product X in the form of fine crystals of 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 of an indirect heat exchanger to which liquid phase P flows continuously with simultaneous continuous flow through the primary chamber of the indirect heat exchanger with a coolant, and continuous withdrawal of a crystal suspension S having a degree of crystallization Y from the secondary chamber in two operating states I and II, wherein the coolant temperature is lower, the mass flow of liquid phase P is greater and the molar proportion of the constituents other than the target product X in the liquid phase P in operating state II is greater than in operating state I.

    摘要翻译： 通过在间接热交换器的二次室中冷却悬浮液结晶来操作以含有目标产物X和除了目标产物X的成分的液相P的细晶体的形式连续除去目标产物X的方法， 该液相P以连续的流动方式连续流过间接热交换器的主室，并具有冷却剂，并且在两个操作状态I和II中连续取出具有结晶Y的程度的结晶悬浮液， 冷却剂温度较低，液相P的质量流量较大，并且在运行状态II下的液相P中除目标产物X以外的成分的摩尔比例大于运行状态I.