公开(公告)号：US20080159948A1

公开(公告)日：2008-07-03

申请号：US11816045

申请日：2006-02-20

申请人： Martin Sesing ,  Armin Diefenbacher ,  Hartwig Voss ,  Olga Schubert ,  Lothar Seidemann ,  Martin Karches ,  Thomas Grassler ,  Eckhard Stroefer

发明人： Martin Sesing ,  Armin Diefenbacher ,  Hartwig Voss ,  Olga Schubert ,  Lothar Seidemann ,  Martin Karches ,  Thomas Grassler ,  Eckhard Stroefer

IPC分类号： C01B7/04

CPC分类号： C01B7/075 ,  C01B7/04 ,  C01B7/0743

摘要： Process for preparing chlorine from hydrogen chloride, which comprises the steps: a) feeding of a stream a1 comprising hydrogen chloride and of a stream a2 comprising oxygen into an oxidation zone and catalytic oxidation of hydrogen chloride to chlorine, giving a product gas stream a3 comprising chlorine, water, oxygen, carbon dioxide and inert gases; b) cooling of the product gas stream a3 and removal of water and hydrogen chloride as aqueous hydrochloric acid, leaving a gas stream b comprising chlorine, water, oxygen, carbon dioxide and inert gases; c) optional drying of the gas stream b) to leave a gas stream c which is substantially free of water and comprises chlorine, oxygen, carbon dioxide and inert gases; d) at least partial liquefaction of the gas stream c and of a chlorine-rich recycle stream f1 comprising chlorine, oxygen and carbon dioxide by compression and cooling, giving an at least partially liquefied stream d; e) gas/liquid separation of the stream d into a gas stream e1 comprising chlorine, oxygen, carbon dioxide and inert gases and into a liquid stream e2 comprising chlorine, oxygen and carbon dioxide; f) feeding of at least part of the gas stream e1 into a membrane separation unit and fractionation by membrane separation to give the chlorine-rich recycle stream f1 and a gas stream f2 which is low in chlorine and comprises chlorine, oxygen and carbon dioxide and recirculation of the chlorine-rich recycle stream f1 to step d); g) separation of the liquid stream e2 by distillation into a chlorine stream g1 and a stream g2 comprising essentially oxygen and carbon dioxide.

摘要翻译： 从氯化氢制备氯的方法，其包括以下步骤：a）将包含氯化氢的物流1和包含氧的物流2加入氧化区并将氯化氢催化氧化成氯，得到产物气流 a 3，包括氯，水，氧，二氧化碳和惰性气体; b）冷却产物气流a 3，除去水和氯化氢作为盐酸水溶液，留下包含氯，水，氧气，二氧化碳和惰性气体的气流b; c）气流的任选干燥b）留下基本上不含水的气流c，包括氯，氧，二氧化碳和惰性气体; d）通过压缩和冷却至少部分液化气流c和包含氯，氧和二氧化碳的富含氯的循环流f 1，产生至少部分液化的流d; e）将气流d气体/液体分离成包含氯气，氧气，二氧化碳和惰性气体的气流e 1并进入包含氯​​气，氧气和二氧化碳的液体流e 2中; f）将至少部分气流e 1进料到膜分离单元中并通过膜分离进行分馏，得到富氯循环流f 1和氯含量低的气流f 2，包括氯，氧和 二氧化碳和富氯循环流f 1再循环到步骤d）; g）通过蒸馏将液体流e 2分离成氯流g 1和基本上包含氧和二氧化碳的流g 2。

公开(公告)号：US20080097123A1

公开(公告)日：2008-04-24

申请号：US11873883

申请日：2007-10-17

申请人： Jorg Heilek ,  Klaus Joachim Muller-Engel ,  Martin Dieterle ,  Armin Diefenbacher

发明人： Jorg Heilek ,  Klaus Joachim Muller-Engel ,  Martin Dieterle ,  Armin Diefenbacher

IPC分类号： C07C61/00 ,  C07C51/42

CPC分类号： C07C51/42 ,  C07C51/235 ,  C07C51/43 ,  C07C51/44 ,  C07C57/04 ,  C07C63/06

摘要： A process for separating acrylic acid and benzoic acid present in the product gas mixture of a partial oxidation to acrylic acid, in which the acrylic acid and the benzoic acid are first converted to a liquid phase, constituents having a lower boiling point than benzoic acid and acrylic acid are removed therefrom by thermal separating processes, and the acrylic acid is removed by crystallization from the remaining liquid phase.

摘要翻译： 将部分氧化的产物气体混合物中存在的丙烯酸和苯甲酸分离为丙烯酸的方法，其中丙烯酸和苯甲酸首先转化为液相，沸点低于苯甲酸的组分和 通过热分离方法除去丙烯酸，通过从剩余液相中结晶除去丙烯酸。

公开(公告)号：US20070112225A1

公开(公告)日：2007-05-17

申请号：US10580685

申请日：2005-10-27

申请人： Tilman Sirch ,  Gerd-Dieter Tebben ,  Ludwig Heck ,  Armin Diefenbacher ,  Alfred Krause ,  Franz Borgel

发明人： Tilman Sirch ,  Gerd-Dieter Tebben ,  Ludwig Heck ,  Armin Diefenbacher ,  Alfred Krause ,  Franz Borgel

IPC分类号： C07C31/18

CPC分类号： B01D61/025 ,  C07C29/149 ,  C07C31/20

摘要： The present invention provides a process for preparing 1,6-hexanediol from a carboxylic acid mixture which comprises adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols and is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-containing gases and by water extraction of the reaction mixture, by esterification of the acids and hydrogenation, in which a) the mono- and dicarboxylic acids present in the aqueous dicarboxylic acid mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) a separation of the bottom product is carried out in a second distillation stage into an ester fraction substantially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the 1,4-cyclohexanediols, d) the ester fraction substantially free of 1,4-cyclohexanediols is catalytically hydrogenated and e) 1,6-hexanediol is obtained in a purifying distillation stage from the hydrogenation effluent while removing an alcohol-low boiler mixture in a manner known per se, wherein alcohol is removed by a membrane system from the mixtures, obtained after the esterification in stage b) and/or after the hydrogenation in stage e), of alcohols and low boilers and recycled into the esterification.

公开(公告)号：US20060004227A1

公开(公告)日：2006-01-05

申请号：US11131261

申请日：2005-05-18

申请人： Martin Dieterle ,  Armin Diefenbacher ,  Goetz-Peter Schindler ,  Catharina Klanner ,  Klaus Mueller-Engel ,  Christoph Adami

发明人： Martin Dieterle ,  Armin Diefenbacher ,  Goetz-Peter Schindler ,  Catharina Klanner ,  Klaus Mueller-Engel ,  Christoph Adami

IPC分类号： C07C51/25

CPC分类号： C07C51/252 ,  C07C45/35 ,  C07C57/04 ,  C07C47/22

摘要： A process for preparing acrolein or acrylic acid or a mixture thereof by heterogeneously catalyzed partial gas oxidation of propylene, in which the starting reaction gas mixture has the following contents: from 6 to 9% by volume of propylene, from 8 to 18% by volume of molecular oxygen, from 6 to 30% by volume of propane and from 32 to 72% by volume of molecular nitrogen.