公开(公告)号：US5380929A

公开(公告)日：1995-01-10

申请号：US236669

申请日：1994-05-02

申请人： Heinz Erpenbach ,  Klaus Gehrmann ,  Erhard Jagers ,  Georg Kohl

发明人： Heinz Erpenbach ,  Klaus Gehrmann ,  Erhard Jagers ,  Georg Kohl

IPC分类号： B01J31/20 ,  C07B61/00 ,  C07C51/12 ,  C07C51/56 ,  C07C53/08 ,  C07C53/12

CPC分类号： C07C51/12 ,  C07C51/56

摘要： To prepare acetic acid and acetic anhydride, methanol and methyl acetate are reacted under anhydrous conditions with carbon monoxide in the presence of a catalyst system containing carbonyl complexes of group VIII noble metals, methyl iodide, an alkali metal acetate or iodide, or quaternary organophosphonium or organoammonium acetate or iodide, The hot carbonylation mixture is decompressed, the evaporated components are fed to a first distillation zone, and the catalyst solution which remains is fed back to the reaction zone. In the first distillation zone, the volatile carbonylation products are subjected to fractional distillation; the low-boiling methyl iodide and methyl acetate pass back into the reaction zone, and the bottom product produced is a mixture of acetic acid and acetic anhydride, which is split into the pure components in a second distillation zone and a third distillation zone.

摘要翻译： 为了制备乙酸和乙酸酐，在无水条件下，甲醇和乙酸甲酯在含有VIII族贵金属，甲基碘，碱金属乙酸酯或碘化物的羰基络合物或季有机鏻的催化剂体系存在下与一氧化碳反应，或 乙酸有机铵或碘化物。将热羰基化混合物减压，将蒸发的组分进料至第一蒸馏区，将剩余的催化剂溶液反馈回反应区。 在第一蒸馏区中，将挥发性羰基化产物进行分馏; 低沸点甲基碘和乙酸甲酯回到反应区，产生的底部产物是乙酸和乙酸酐的混合物，其在第二蒸馏区和第三蒸馏区被分成纯组分。

公开(公告)号：US4717454A

公开(公告)日：1988-01-05

申请号：US774384

申请日：1985-09-10

申请人： Heinz Erpenbach ,  Klaus Gehrmann ,  Peter Horstermann ,  Georg Kohl

发明人： Heinz Erpenbach ,  Klaus Gehrmann ,  Peter Horstermann ,  Georg Kohl

IPC分类号： C07C69/34 ,  B01J31/00 ,  C07C45/00 ,  C07C45/82 ,  C07C45/85 ,  C07C49/08 ,  C07C51/00 ,  C07C51/573 ,  C07C53/12 ,  C07C67/00 ,  B01D5/00

CPC分类号： C07C51/573 ,  C07C45/82 ,  C07C45/85 ,  C07C67/36 ,  C07C67/37 ,  C07C67/60 ,  Y10S203/06

摘要： A process for removing by product acetone from reaction mixtures obtained by reacting methyl acetate and/or dimethylether with carbon monoxide at elevated temperatures to obtain acetic anhydride in the presence of a catalyst system consisting essentially of carbonyl complexes of noble metals belonging to group VIII of the Periodic System of the elements, acetic acid, an organophosphorus or organonitrogen compound, and methyl iodide whereby the acetone obtained as a by-product during the reaction is subjected to condensation at temperatures of 50.degree. to 250.degree. C., under pressures of 0.01 to 150 bars and at a molar ratio as above defined for the catalyst system constituent of 1:(25-500):(10-100):(15-150) so as to obtain predominantly higher-boiling secondary products to be distillatively separated in a successive distillation zone together with volatile constituents of the catalyst system.

摘要翻译： 通过产物丙酮从反应混合物中除去反应混合物的方法，该反应混合物通过在高温下使乙酸甲酯和/或二甲醚与一氧化碳反应而获得，以在催化剂体系存在下获得乙酸酐，所述催化剂体系主要由以下组分的贵金属的羰基络合物组成： 元素的定期系统，乙酸，有机磷或有机氮化合物和甲基碘，由此在反应过程中作为副产物获得的丙酮在温度为50至250℃，压力为0.01至 150巴，摩尔比如上述对于催化剂体系成分1：（25-500）：（10-100）：（15-150）所定义的摩尔比，从而获得主要是较高沸点的次要产物，以蒸馏分离 连续的蒸馏区和催化剂体系的挥发性成分。

公开(公告)号：US4549937A

公开(公告)日：1985-10-29

申请号：US442107

申请日：1982-11-16

申请人： Heinz Erpenbach ,  Klaus Gehrmann ,  Peter Horstermann ,  Hans-Klaus Kubbeler ,  Georg Kohl

发明人： Heinz Erpenbach ,  Klaus Gehrmann ,  Peter Horstermann ,  Hans-Klaus Kubbeler ,  Georg Kohl

IPC分类号： C07C69/34 ,  B01J31/00 ,  C07C51/00 ,  C07C51/573 ,  C07C53/12 ,  C07C67/00 ,  C07C67/54 ,  C07C69/16 ,  B01D3/06 ,  C07C51/56

CPC分类号： C07C51/573 ,  C07C67/54

摘要： The disclosure relates to a process for separating the catalyst system from reaction mixtures which are obtained by reacting methyl acetate and/or dimethylether with carbon monoxide and optionally hydrogen at elevated temperatures to acetic anhydride and optionally ethylidene diacetate in the presence of a catalyst system consisting of carbonyl complexes of noble metals belonging to group VIII of the Periodic System, acetic acid, an organophosphorus or organonitrogen compound, methyl iodide and optionally compounds of carbonyl-yielding common metals, and which issue from the reaction zone under a pressure of 25 to 150 bars at a temperature of 100.degree. to 250.degree. C. More particularly, the reaction mixture coming from the reaction zone is introduced into a separator heated to 60.degree. to 140.degree. C. and released to a pressure of 0.5 to 3.5 bars with spontaneous evaporation of the bulk of volatile constituents; the stream of liquid matter coming from the separator is delivered to a distilling zone and the bulk of still volatile constituents is distilled off therein under a pressure of 0.05 to 1 bar at a base temperature of 70.degree. to 170.degree. C.; and catalyst solution retained as base product is recycled to the reaction zone.

摘要翻译： 本公开涉及一种从反应混合物中分离催化剂体系的方法，其通过使乙酸甲酯和/或二甲醚与一氧化碳和任选的氢气在高温下反应而获得，所述方法是在催化剂体系存在下在高温下在乙酸酐和任选的亚乙基二乙酸酯 属于周期系第VIII族的贵金属的羰基络合物，乙酸，有机磷或有机氮化合物，甲基碘和任选的产生羰基的常见金属的化合物，并且在25至150巴的压力下从反应区发出 更优选地，将来自反应区的反应混合物引入加热至60℃至140℃的隔膜中，并释放至0.5至3.5巴的压力，并自发蒸发 大部分挥发性成分; 来自分离器的液体物流被输送到蒸馏区，并且在基本温度为70至170℃的压力下，在0.05至1巴的压力下蒸馏出大部分挥发性挥发性成分。 将作为基础产物保留的催化剂溶液再循环至反应区。

公开(公告)号：US3954854A

公开(公告)日：1976-05-04

申请号：US549176

申请日：1975-02-12

申请人： Klaus Gehrmann ,  Heinz Erpenbach ,  Georg Kohl ,  Hans Klaus Kuebbeler

发明人： Klaus Gehrmann ,  Heinz Erpenbach ,  Georg Kohl ,  Hans Klaus Kuebbeler

IPC分类号： B01J23/00 ,  B01J27/00 ,  B01J31/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/487 ,  C07C57/065 ,  C07C57/07 ,  C07C57/075 ,  C07C67/00

CPC分类号： C07C51/487

摘要： Monomeric acrylic acid is recovered from residues originating from processed crude acrylic acid and containing .beta.-acryloyloxypropionic acid, .beta.-acetoxypropionic acid, hydracrylic acid, dihydracrylic acid and polymeric hydracrylic acid. To this end, the residues are heated to temperatures within the range 130.degree. and 250.degree.C under pressures within the range 0.01 and 1 atmosphere absolute in contact with catalysts selected from alkali metal or alkaline earth metal carboxylates, phosphates or borates, or from alkali metal or alkaline earth metal compounds producing carboxylates together with the carboxylic acids being contained in the residues.

摘要翻译： 来自加工粗丙烯酸和含有β-丙烯酰氧基丙酸，β-乙酰氧基丙酸，氢丙烯酸，二丙烯酸和聚合丙烯酸的残余物中回收单体丙烯酸。 为此，将残余物加热到130℃和250℃范围内的温度，在0.01和1个绝对大气压范围内的压力下，与选自碱金属或碱土金属羧酸盐，磷酸盐或硼酸盐或碱的催化剂接触 与残留物中含有的羧酸一起产生羧酸盐的金属或碱土金属化合物。

公开(公告)号：US4898966A

公开(公告)日：1990-02-06

申请号：US256052

申请日：1988-10-11

申请人： Heinz Erpenbach ,  Klaus Gehrmann ,  Peter Horstermann ,  Erhard Jagers ,  Georg Kohl

发明人： Heinz Erpenbach ,  Klaus Gehrmann ,  Peter Horstermann ,  Erhard Jagers ,  Georg Kohl

IPC分类号： C07C229/36

CPC分类号： C07C227/18

摘要： In order to prepare phenylalanine n-propyl ester hydrochloride, phenylalanine hydrochloride is reacted with n-propanol in the molar ration 1: (5 to 20) at temperatures from 80.degree. to 110.degree. C., preferably 85.degree. to 105.degree. C., at pressures from 0.1 to 1.5 bar in the presence of 0.1 to 0.75 mole of HCl/mole of phenylalanine hydrochloride as catalyst and in the presence of water entrainer, a concentration of water entrainer of 20 to 50% by weight being maintained in the reaction mixture.

摘要翻译： 为了制备苯丙氨酸正丙酯盐酸盐，将苯丙氨酸盐酸盐与摩尔比1：（5〜20）的正丙醇在80〜110℃，优选85〜105℃反应， 在0.1至0.75摩尔HCl /摩尔苯丙氨酸盐酸盐作为催化剂的存在下，在0.1至1.5巴的压力下，在水夹带剂的存在下，在反应混合物中保持20至50重量％的水夹带剂浓度 。