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    PROCESS FOR PREPARING (METH)ACROLEIN BY HETEROGENEOUSLY CATALYZED GAS PHASE PARTIAL OXIDATION
    1.
    发明申请
    PROCESS FOR PREPARING (METH)ACROLEIN BY HETEROGENEOUSLY CATALYZED GAS PHASE PARTIAL OXIDATION 失效
    通过异源催化气相部分氧化制备（甲基）丙烯酸的方法

    公开(公告)号：US20110130596A1

    公开(公告)日：2011-06-02

    申请号：US12954770

    申请日：2010-11-26

    申请人： Josef MACHT ,  Andreas Raichle ,  Klaus Joachim Müller-Engel ,  Ulrich Hammon

    发明人： Josef MACHT ,  Andreas Raichle ,  Klaus Joachim Müller-Engel ,  Ulrich Hammon

    IPC分类号： C07C45/35

    CPC分类号： B01J23/002 ,  B01J23/8885 ,  B01J35/023 ,  B01J37/04 ,  B01J37/08 ,  B01J2523/00 ,  C07C45/35 ,  C07C47/22 ,  B01J2523/13 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/842 ,  B01J2523/845

    摘要： A process for preparing (meth)acrolein by heterogeneously catalyzed gas phase partial oxidation of a precursor compound, in which the reaction gas mixture which comprises at least 3% by volume of precursor compound is passed through a fresh fixed catalyst bed whose active material is a multielement oxide which comprises the elements Mo, Fe and Bi and at least one of the elements Ni and Co, and the fixed catalyst bed is loaded with at least 40 l (STP)/l·h of precursor compound, and the precursor compound is converted to an extent of at least 90 mol %, wherein, over the first 8000 operating hours, during X=10 to 500 operating hours, the highest temperature of the reaction gas mixture in the fixed catalyst bed is 400 to 450° C. and, during the remaining 8000−X operating hours, is 300 to

    摘要翻译： 通过前体化合物的非均相催化气相部分氧化制备（甲基）丙烯醛的方法，其中将包含至少3体积％的前体化合物的反应气体混合物通过新鲜的固定催化剂床，活性材料为 包含元素Mo，Fe和Bi以及元素Ni和Co中的至少一种和固定催化剂床的多元素氧化物装载至少40μl（STP）/ l·h的前体化合物，前体化合物是 转化为至少90摩尔％的程度，其中，在第一个8000个工作小时内，在X = 10至500个操作小时期间，固定催化剂床中的反应气体混合物的最高温度为400至450℃， 在剩余的8000-X工作时间内，为300至<400℃，并且在X = 10至500个工作小时的时间内，平均有机前体化合物的固定催化剂床的负载大于 8000-X营业时间。

    PROCESS FOR LONG-TERM OPERATION OF A HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF PROPENE TO ACROLEIN
    5.
    发明申请
    PROCESS FOR LONG-TERM OPERATION OF A HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF PROPENE TO ACROLEIN 有权
    长时间操作异构催化部分气相氧化丙烯的方法

    公开(公告)号：US20120095267A1

    公开(公告)日：2012-04-19

    申请号：US13271448

    申请日：2011-10-12

    申请人： Josef MACHT ,  Klaus Joachim Müller-Engel ,  Frank Rosowski

    发明人： Josef MACHT ,  Klaus Joachim Müller-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。

    Preparation of acrylic acid
    7.
    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。