公开(公告)号：US07589046B2

公开(公告)日：2009-09-15

申请号：US10843632

申请日：2004-05-12

申请人： Martin Dieterle ,  Wolfgang Juergen Poepel ,  Silke Berndt ,  Raimund Felder ,  Signe Unverricht ,  Klaus Joachim Mueller-Engel

发明人： Martin Dieterle ,  Wolfgang Juergen Poepel ,  Silke Berndt ,  Raimund Felder ,  Signe Unverricht ,  Klaus Joachim Mueller-Engel

IPC分类号： B01J23/00

CPC分类号： B01J23/002 ,  B01J23/885 ,  B01J37/0009 ,  B01J37/0045 ,  B01J37/0223 ,  B01J37/08 ,  B01J2523/00 ,  C07C51/252 ,  C21B13/006 ,  C21B13/0073 ,  C21B13/08 ,  C21B2100/44 ,  C22B1/216 ,  C22B34/00 ,  C22B34/30 ,  Y02P10/136 ,  C07C57/04 ,  B01J2523/17 ,  B01J2523/55 ,  B01J2523/68 ,  B01J2523/69

摘要： In a process for the thermal treatment of the precursor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.

摘要翻译： 在用于热处理旋转管式炉中的催化活性材料的前体材料的方法中，气流流过该方法，使流过旋转管式炉的气流的至少一部分循环，并将相关的旋转管 用于将丙烯醛部分气相氧化成丙烯酸的炉装置和管束反应器装载有催化活性物质可通过热处理方法获得的催化剂。

公开(公告)号：US07307132B2

公开(公告)日：2007-12-11

申请号：US10511603

申请日：2003-05-12

申请人： Gerhard Nestler ,  Klaus Joachim Mueller-Engel ,  Stefan Wickel

发明人： Gerhard Nestler ,  Klaus Joachim Mueller-Engel ,  Stefan Wickel

IPC分类号： C08F20/06 ,  C08F120/06 ,  C08F220/06

CPC分类号： C08F20/06

摘要： This invention relates to a process for preparing a low-odor hydrogel-forming acrylic acid polymer, which comprises the steps of: a) preparing a polymeric hydrogel by free-radically polymerizing a monomer composition comprising at least 50% by weight of acrylic acid in an aqueous polymerization medium and converting said hydrogel into a particulate hydrogel or into hydrogel-forming powder; and optionally b) treating said particulate hydrogel or said hydrogel-forming powder with a crosslinking substance which, actually or latently, contain at least two functional groups capable of reacting with the carboxyl groups on the addition polymer; characterized by the acrylic acid used in step a) containing less than 400 ppm of acetic acid and propionic acid. It further relates to the hydrogel-forming addition polymers obtainable by the process and to their use.

摘要翻译： 本发明涉及一种制备低气味形成水凝胶的丙烯酸聚合物的方法，其包括以下步骤：a）通过将包含至少50重量％丙烯酸的单体组合物自由基聚合制备聚合物水凝胶 水性聚合介质，并将所述水凝胶转化为颗粒状水凝胶或形成水凝胶形成粉末; 并且任选地b）用实际上或潜在地含有至少两个能够与加成聚合物上的羧基反应的官能团的交联物质处理所述颗粒状水凝胶或所述水凝胶形成粉末; 其特征在于在步骤a）中使用的丙烯酸含有少于400ppm的乙酸和丙酸。 它还涉及可通过该方法获得的水凝胶形成加成聚合物及其用途。

公开(公告)号：US07157597B2

公开(公告)日：2007-01-02

申请号：US10803897

申请日：2004-03-19

申请人： Martin Dieterle ,  Jochen Petzoldt ,  Heiko Arnold ,  Wilhelm Ruppel ,  Klaus Joachim Mueller-Engel

发明人： Martin Dieterle ,  Jochen Petzoldt ,  Heiko Arnold ,  Wilhelm Ruppel ,  Klaus Joachim Mueller-Engel

IPC分类号： C07C51/235

CPC分类号： C07C51/252 ,  C07C57/04

摘要： In a process for heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid, the starting reaction gas mixture is oxidized over a fixed catalyst bed 1 which consists of at least two fixed catalyst bed zones and is accommodated in two successive temperature zones A, B, and the transition from temperature zone A to temperature zone B does not coincide with a transition from one fixed catalyst bed zone to another fixed catalyst bed zone.

摘要翻译： 在将丙烯醛非均相催化的部分气相氧化成丙烯酸的过程中，起始反应气体混合物在由至少两个固定的催化剂床区组成的固定催化剂床1上被氧化并且容纳在两个连续的温度区A，B ，从温度区A到温度区B的过渡与从一个固定的催化剂床区到另一个固定的催化剂床区的过渡不一致。

公开(公告)号：US07154009B2

公开(公告)日：2006-12-26

申请号：US10961050

申请日：2004-10-12

申请人： Martin Dieterle ,  Jochen Petzoldt ,  Klaus Joachim Mueller-Engel

发明人： Martin Dieterle ,  Jochen Petzoldt ,  Klaus Joachim Mueller-Engel

IPC分类号： C07C45/35

CPC分类号： C07C45/35 ,  B01J23/002 ,  B01J23/8876 ,  B01J23/8885 ,  B01J23/94 ,  B01J35/0006 ,  B01J38/12 ,  B01J38/14 ,  B01J2523/00 ,  Y02P20/584 ,  C07C47/22 ,  B01J2523/13 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/842 ,  B01J2523/845

摘要： A process for the long-term operation of a heterogeneously catalyzed gas phase partial oxidation of propene to acrolein, in which the temperature of the fixed catalyst bed is increased over the time and the gas phase partial oxidation is interrupted at least once per calendar year and the gas mixture G consisting of molecular oxygen, inert gas and optionally steam is conducted through the fixed catalyst bed at a temperature of the fixed catalyst bed of from 250 to 550° C.

摘要翻译： 长期运行丙烯到丙烯醛的非均相催化气相部分氧化丙烯醛的方法，其中固定催化剂床的温度随时间增加，气相部分氧化至少每个日历年中断至少一次， 由分子氧，惰性气体和任选的蒸气组成的气体混合物G在固定催化剂床的温度为250-550℃下通过固定的催化剂床。