公开(公告)号：US06646141B2

公开(公告)日：2003-11-11

申请号：US10203184

申请日：2002-10-04

申请人： Willi Hofen ,  Georg Thiele ,  Alexander Möller

发明人： Willi Hofen ,  Georg Thiele ,  Alexander Möller

IPC分类号： C07D30112

CPC分类号： C07D301/12 ,  C07D301/32

摘要： The present invention relates to a process for the working up of a product stream from the epoxidation of olefins that contains olefin, olefin oxide, water-miscible organic solvent and water, by separating this product stream into an overhead product containing olefin, olefin oxide and organic solvent, and into a bottom product containing organic solvent and water, wherein the separation takes place in a pre-evaporator with at most 5 theoretical separation stages, and 20 to 60% of the total amount of organic solvent introduced with the product stream is removed with the overhead product and the residue remains in the bottom product, as well as a process for the epoxidation of olefins that includes this working up stage.

摘要翻译： 本发明涉及一种通过将该产物流分离成含有烯烃，烯烃氧化物的塔顶产物和来自含有烯烃，烯烃氧化物，水混溶性有机溶剂和水的烯烃的环氧化来处理产物流的方法， 有机溶剂，并进入含有有机溶剂和水的底部产物，其中分离在预蒸发器中进行至多5个理论分离阶段，并且与产物流引入的有机溶剂的总量的20至60％ 用塔顶产物除去残余物残留在底部产物中，以及包括该加工阶段的烯烃环氧化方法。

公开(公告)号：US06610865B2

公开(公告)日：2003-08-26

申请号：US10222343

申请日：2001-08-15

申请人： Willi Hofen ,  Georg Thiele

发明人： Willi Hofen ,  Georg Thiele

IPC分类号： C07D30112

CPC分类号： C07D301/12

摘要： A process for the catalytic epoxidation of olefins with hydrogen peroxide in a continuous flow reaction system, wherein the reaction mixture includes at least one liquid phase which is passed through a fixed catalyst bed positioned between parallel heat exchange plates and the reaction heat is at least partially removed during the course of the reaction by passing a cooling medium through the heat exchange plates.

公开(公告)号：US4874556A

公开(公告)日：1989-10-17

申请号：US266237

申请日：1988-10-28

申请人： Manfred Dankowski ,  Willi Hofen

发明人： Manfred Dankowski ,  Willi Hofen

IPC分类号： C07C409/24 ,  C07C67/00 ,  C07C407/00

CPC分类号： C07C407/006 ,  C07C407/003

摘要： A process for desensitization of water insoluble peroxycarboxylic acids with essentially sodium sulfate in the aqueous phase, wherein the desensitized peroxycarboxylic acids is separated from the mother liquor, and the sodium sulfate contained in the mother liquor is isolated by one- or multi-stage crystallization in purified form as the deca (hepta) hydrate and this, directly or after conversion to an aqueous sodium sulfate solution, and/or anhydrous sodium sulfate is returned to the desensitization process. The process is nonpolluting and can be operated safely on the industrial scale. The peroxycarboxylic acids desensitized according to the invention are characterized by lower heavy metal content and high storage stability.

摘要翻译： 在水相中基本上含有硫酸钠的水不溶性过氧羧酸脱敏的方法，其中脱敏的过氧羧酸与母液分离，母液中所含的硫酸钠通过一步或多步结晶分离 纯化形式为十（七）水合物，直接或转化成硫酸钠水溶液后，和/或无水硫酸钠回到脱敏过程。 该工艺无污染，可在工业规模上安全运行。 根据本发明脱敏的过氧羧酸的特征在于较低的重金属含量和高的储存稳定性。

公开(公告)号：US4855465A

公开(公告)日：1989-08-08

申请号：US166784

申请日：1988-03-02

申请人： Andreas Grund ,  Guenter Prescher ,  Georg Boehme ,  Willi Hofen ,  Heinrich Petsch

发明人： Andreas Grund ,  Guenter Prescher ,  Georg Boehme ,  Willi Hofen ,  Heinrich Petsch

IPC分类号： C07D301/14 ,  C07D303/04

CPC分类号： C07D303/04 ,  C07D301/14

摘要： Aliphatic epoxides of the formula: ##STR1## can be prepared in a technically efficient manner from the corresponding olefins by means of perpropionic acid in a benzene solution. The benzene solution can also be 1.5 weight percent of hydrogen peroxide, 1.5 weight percent of water and about 800 ppm of mineral acid.

摘要翻译： 具有下式的脂肪族环氧化物：可以通过在苯溶液中的过丙酸从相应的烯烃以技术上有效的方式制备。 苯溶液也可以是1.5重量％的过氧化氢，1.5重量％的水和约800ppm的无机酸。

公开(公告)号：US4089892A

公开(公告)日：1978-05-16

申请号：US678829

申请日：1976-04-28

申请人： Willi Hofen ,  Gerd Schreyer ,  Rolf Wirthwein ,  Helmut Waldmann ,  Gerd Siekmann

发明人： Willi Hofen ,  Gerd Schreyer ,  Rolf Wirthwein ,  Helmut Waldmann ,  Gerd Siekmann

IPC分类号： C07C67/00 ,  C07C407/00 ,  C07C409/24 ,  C07C179/10 ,  B01D3/00

CPC分类号： C07C407/00 ,  C07C407/003

摘要： Process for continuous production of substantially anhydrous solutions of percarboxylic acid in solvent. Aqueous hydrogen peroxide is first reacted with the corresponding carboxylic acid in the presence of acid catalyst to form percarboxylic acid and water (1). The percarboxylic acid is extracted with solvent (5), to provide a solvent phase containing the percarboxylic acid (11) and an aqueous raffinate (7). The solvent phase is subjected to distillation (12) to provide the anhydrous solution (13). In this distillation (12) the hydrogen peroxide remaining in the solvent phase produced in the extraction (5), is distilled off together with water and some solvent, and the hydrogen peroxide is recovered as an aqueous phase and recycled (14). The aqueous raffinate, which contains hydrogen peroxide, is distilled to remove water (8) and the resulting concentrate is recycled (2) for use in the reaction (1).

摘要翻译： 连续生产基本上无水的过羧酸溶剂在溶剂中的方法。 首先在酸催化剂存在下，将过氧化氢水溶液与相应的羧酸反应生成过羧酸和水（1）。 用溶剂（5）萃取过羧酸，提供含有过羧酸（11）和含水萃余液（7）的溶剂相。 对溶剂相进行蒸馏（12）以提供无水溶液（13）。 在该蒸馏（12）中，在萃取（5）中产生的溶剂相中剩余的过氧化氢与水和一些溶剂一起蒸馏出去，并将过氧化氢作为水相回收并回收（14）。 含有过氧化氢的含水萃余液被蒸馏以除去水（8），并将所得浓缩物再循环（2）用于反应（1）。

公开(公告)号：US20110054197A1

公开(公告)日：2011-03-03

申请号：US12919637

申请日：2008-12-16

申请人： Willi Hofen ,  Claudia Brasse ,  Robert Franke ,  Robert Katzer

发明人： Willi Hofen ,  Claudia Brasse ,  Robert Franke ,  Robert Katzer

IPC分类号： C07D301/12

CPC分类号： C07D301/12 ,  Y02P20/127

摘要： The invention relates too method for the production of epichlorohydrin, wherein a chloropropane-containing ally chloride in excess is reacted in a first reaction stage with hydrogen peroxide. The non-reacted ally chloride is separated and returned to the reaction, wherein part of the separated ally chloride is added to a second reaction stage and reacted with hydrogen peroxide, wherein the hydrogen peroxide quantity is selected in the second reaction stage such that the ally chloride is largely reacted. The chloropropanes are separated from the reaction mixture of the second reaction stage by means of distillation and removed from the process.

摘要翻译： 本发明涉及制备表氯醇的方法，其中过量的含氯丙烷的烯丙基氯在第一反应阶段与过氧化氢反应。 将未反应的烯丙基氯分离并返回反应，其中将部分分离的烯丙基氯加入第二反应阶段并与过氧化氢反应，其中在第二反应阶段选择过氧化氢的量， 氯化物大部分反应。 通过蒸馏将氯丙烷与第二反应阶段的反应混合物分离，并从该方法中除去。

公开(公告)号：US06749668B2

公开(公告)日：2004-06-15

申请号：US10174549

申请日：2002-06-18

申请人： Willi Hofen ,  Georg Thiele ,  Wolfgang Wöll

发明人： Willi Hofen ,  Georg Thiele ,  Wolfgang Wöll

IPC分类号： B01D5314

CPC分类号： B01D53/14

摘要： A process for the recovery of combustible components of a gas stream containing the combustible components and oxygen by selective absorption of the combustible components in a solvent, whereby during the absorption the gas phase is dispersed in a continuous liquid phase of the solvent. In a preferred embodiment the process is applied to give a process for the epoxidation of propene with hydrogen peroxide in the alcoholic solvent in presence of a catalyst, wherein a gas stream including unreacted propene, propene oxide and oxygen from the decomposition of the hydrogen peroxide is separated from the epoxidation reaction mixture and the combustible components in said gas stream are recovered using the process as described above.

摘要翻译： 通过在溶剂中选择性吸收可燃组分来回收含有可燃组分和氧的气流的可燃组分的方法，由此在吸收期间气相分散在溶剂的连续液相中。 在优选的实施方案中，应用该方法以在催化剂存在下，在醇溶剂中用过氧化氢环氧化丙烯的方法，其中包含未反应的丙烯，氧化丙烯和来自过氧化氢分解的氧的气流是 与环氧化反应混合物分离，并使用上述方法回收所述气流中的可燃组分。

公开(公告)号：US5852219A

公开(公告)日：1998-12-22

申请号：US885045

申请日：1997-06-30

申请人： Joerg Sauer ,  Wolfgang Boeck ,  Lukas von Hippel ,  Werner Burkhardt ,  Stephan Rautenberg ,  Dietrich Arntz ,  Willi Hofen

发明人： Joerg Sauer ,  Wolfgang Boeck ,  Lukas von Hippel ,  Werner Burkhardt ,  Stephan Rautenberg ,  Dietrich Arntz ,  Willi Hofen

IPC分类号： B01J23/04 ,  B01J23/30 ,  B01J35/10 ,  B01J37/02 ,  C07B61/00 ,  C07C319/08 ,  C07C321/04

CPC分类号： B01J23/30 ,  C07C319/08

摘要： A catalyst for the synthesis of methyl mercaptan from hydrogen sulfide and methanol, as well as a process for preparing the catalyst. The catalyst contains active aluminum oxide on which 15% to 40% by weight cesium tungstate is deposited as the activator. The activator, cesium tungstate, gives an unexpected increase in activity and selectivity as compared with potassium tungstate, which is used exclusively at the present state of the art.

摘要翻译： 用于从硫化氢和甲醇合成甲硫醇的催化剂以及制备催化剂的方法。 催化剂含有活性氧化铝，其上沉积了15重量％至40重量％的钨酸铯作为活化剂。 与钨酸钾相比，活化剂钨酸铯在活性和选择性方面出人意料的增加，这是专门用于现有技术的钨酸钾。

公开(公告)号：US4904821A

公开(公告)日：1990-02-27

申请号：US206488

申请日：1988-06-14

申请人： Georg Boehme ,  Willi Hofen ,  Guenther Prescher ,  Rainer Siegmeier

发明人： Georg Boehme ,  Willi Hofen ,  Guenther Prescher ,  Rainer Siegmeier

IPC分类号： C07C67/00 ,  C07C407/00 ,  C07C409/26

CPC分类号： C07C409/26 ,  C07C407/00 ,  C07C407/003

摘要： In order to safely prepare peracetic acid in an organic solvent, the bottom is maintained in a certain stationary state during the preparation of aqueous peracetic acid, whereupon the vapor current of peracetic acid, acetic acid and water is absorbed with an organic phosphate with 3-30 carbon atoms. The solution obtained in this manner can be transferred by means of desorption with a low-boiling compound, e.g. an alkyl ester, into this lower-boiling solvent.

摘要翻译： 为了在有机溶剂中安全地制备过乙酸，在制备过乙酸水溶液期间将底部保持在一定的静止状态，于是过氧乙酸，乙酸和水的蒸气流被有机磷酸盐吸收， 30个碳原子。 以这种方式获得的溶液可以通过用低沸点化合物，例如， 烷基酯，进入该低沸点溶剂。

公开(公告)号：US06670492B2

公开(公告)日：2003-12-30

申请号：US10203186

申请日：2002-10-04

申请人： Willi Hofen ,  Georg Thiele

发明人： Willi Hofen ,  Georg Thiele

IPC分类号： C07D30112

CPC分类号： C07D301/12

摘要： The invention described herein relates to a process for the catalytic epoxidation of olefins with hydrogen peroxide in a continuous flow reaction system, wherein a gaseous phase containing an olefin and a liquid phase containing the hydrogen peroxide is present in the reaction system and the gaseous phase flows in countercurrent to the liquid phase.