公开(公告)号：WO2011131643A3

公开(公告)日：2011-12-29

申请号：PCT/EP2011056189

申请日：2011-04-19

Applicant: BASF SE ,  KRONEMAYER HELMUT ,  DAHLHOFF ELLEN ,  LANVER ANDREAS

Inventor： KRONEMAYER HELMUT ,  DAHLHOFF ELLEN ,  LANVER ANDREAS

IPC: C07C67/03

CPC classification number: C07C67/03 ,  Y02P20/127 ,  C07C69/06

Abstract: In a process for preparing carboxylic esters by transesterification, a first feed stream comprising a first carboxylic ester, e.g. methyl formate, is introduced at the side into a reaction column at a first inlet located between the top and the bottom of the reaction column and a second feed stream comprising a first alcohol, e.g. ethanol, is introduced at the side into the reaction column at a second inlet located above the first inlet and the feed streams are reacted in a reaction zone of the reaction column to form a second carboxylic ester and a second alcohol. The first alcohol has a higher molecular weight than the second alcohol. A product fraction comprising the second carboxylic ester and unreacted first carboxylic ester is taken off at an offtake located above the second inlet. A bottom fraction comprising the second alcohol and unreacted first alcohol is taken off at the bottom of the reaction column. The product fraction is separated by distillation at a pressure which is different from the pressure in the reaction column into second carboxylic ester and a fraction containing unreacted first carboxylic ester and the fraction containing unreacted first carboxylic ester is at least partly recirculated to the reaction zone.

Abstract translation: 在通过酯交换反应制备羧酸酯的方法中，第一种进料包含第一种羧酸酯， 当甲酸甲酯包含时，位于反应塔的顶部和底部之间的至少一个第一进料点横向进入反应塔，并且第二进料包含第一醇，以用于。 作为乙醇，在位于第一进料点上方的第二进料点横向引入反应塔中，并在反应塔的反应区中反应以形成第二羧酸酯和第二醇。 第一种醇比第二种醇具有更高的分子量。 在位于第二进料点之上的取出点处，取出包含第二羧酸酯和未反应的第一羧酸酯的产物馏分。 在反应塔的底部，取出包含第二醇和未反应的第一醇的塔底馏分。 通过蒸馏进入第二Carbonsäureester和未反应的第一Carbonsäureester馏分产物部分的压力是从在反应塔中的压力不同的是分离的，并含有至少部分地返回到反应区中的未反应的第一Carbonsäureester所得的级分。

公开(公告)号：WO2014090841A3

公开(公告)日：2014-08-14

申请号：PCT/EP2013076154

申请日：2013-12-11

Applicant: BASF SE

Inventor： OLBERT GERHARD ,  TELLAECHE HERRANZ CARLOS ,  ASPIRON NORBERT ,  WECK ALEXANDER ,  DAHLHOFF ELLEN

IPC: B01J8/04 ,  B01J19/24 ,  C07C5/48

CPC classification number: C07C5/48 ,  B01J8/0453 ,  B01J8/0492 ,  B01J19/2485 ,  B01J2208/00265 ,  B01J2208/00283 ,  B01J2208/0053 ,  B01J2208/00849 ,  B01J2208/00911 ,  B01J2208/00938 ,  Y02P20/52 ,  C07C11/04 ,  C07C11/06 ,  C07C11/08 ,  C07C11/09 ,  C07C11/167 ,  C07C15/46

Abstract: The invention relates to a reactor (1) in the form of a cylinder with a vertical longitudinal axis, for performing an autothermal gas-phase dehydrogenation of a hydrocarbon-containing gas stream (2) with an oxygen-containing gas stream (3), obtaining a reaction gas mixture, on a heterogeneous catalyst, which is designed as monolith (4), wherein one or more catalytically active zones (5) are arranged in the interior of the reactor (1), each zone comprising a packing of monoliths (4) stacked one next to another and/or one on top of another and wherein a mixing zone (6) with fixed installations is provided upstream of each catalytically active zone (5). The reactor has: - one or more feeder lines (7) at the lower end thereof for the hydrocarbon-containing gas stream (2) to be dehydrogenated; - one or more feeder lines (9) that can be regulated independently of one another for the oxygen-containing gas stream (3) flowing into each of the mixing zones (6), each feeder line (9) feeding one or more distributors (10); - and one or more discharge lines (11) at the upper end of the reactor (1) for the reaction gas mixture from the autothermal gas-phase dehydrogenation, wherein the interior wall of the reactor (1) is furnished with a continuous insulation layer (13, 14, 15) and wherein the accessibility of one or each of the plurality of catalytically active zones (5) from outside the reactor is guaranteed via - one or more manholes (12), or wherein one or each of the plurality of catalytically active zones (5), each comprising a respective packing of monoliths stacked one next to another and/or one on top of an other including - the mixing zone (6) with fixed installations provided upstream of each catalytically active zone (5) - the one or more feeder lines (9) controllable independently of one another - and the one or more distributors (10) that are each fed via a respective feeder line (9), are constructed as a structural element (24) that can be individually installed or uninstalled.

Abstract translation: （4）中提出了与用于执行含烃气体流的自热气相脱氢（2）的含氧气体流（3），以获得在非均相催化剂的反应气体混合物作为整体的垂直纵向轴线的圆柱体的形式的反应器（1）形成 ，其特征在于， - 在所述反应器（1）的内部布置的一个或多个催化活性区（5），每个包括邻近和/或堆叠整料（4），并且其中的一个在包装前对每个催化活性区（5），分别 的混合区（6），设置有固定内部构件， - 用一个或多个供应管线（7），用于将已脱氢的含烃气体流（2）在反应器（1）的下端， - 用一个或多个独立可控电源线（9 ），每个进料管线（9）供给一个或多个分配器（10），用于将含氧气体 流（3）在每个混合区（6）和 - 与一个或多个排放管道（11），用于自热气相脱氢的反应气体混合物在反应器的上端（1），其中，所述反应器（1）连续地用绝缘层（13的内壁， 14，15）设置，并且其中一个或每一个所述多个的多种催化活性区（5）比反应器的外面的的可访问性 - 在每种情况下的一个或几个人孔（12）保证的，或者其中该（或每一个所述多个催化活性区中的 5），每个包括的填充相邻和/或堆叠整料包括： - （之前提供用于混合区域中的每个催化活性区5）与固定内件，（6） - （所述一个或多个可独立控制的供电线9）和 形成-the一个或多个分配器（10），其通过相应的进料管线（9）供给，每个作为成分（24）单独地也COM 在安装并可以拆卸。

公开(公告)号：WO2011131609A2

公开(公告)日：2011-10-27

申请号：PCT/EP2011056110

申请日：2011-04-18

Applicant: BASF SE ,  KRONEMAYER HELMUT ,  DAHLHOFF ELLEN ,  LANVER ANDREAS

Inventor： KRONEMAYER HELMUT ,  DAHLHOFF ELLEN ,  LANVER ANDREAS

IPC: C07C67/54

CPC classification number: C07C67/54 ,  C07C69/06

Abstract: In a process for purifying carboxylic esters such as ethyl formate, a carboxylic ester to be purified is distilled in the presence of an extractant, preferably by (a) allowing vapour of the carboxylic ester to be purified to ascend in a distillation column; (b) conveying the extractant in countercurrent to the vapour in an extractive distillation zone; (c) taking off pure carboxylic ester above the extractive distillation zone. The extractant is selected, for example, from among diols, polyols, open-chain or cyclic amides.

Abstract translation: 在用于Carbonsäureestern，如甲酸乙酯的纯化方法，蒸馏一个Carbonsäureester到在提取剂的存在下进行清洗，优选通过使提升到在蒸馏塔进行清洗Carbonsäureester（a）所述蒸气; （b）将萃取剂通入萃取蒸馏区的蒸气中; （c）在萃取蒸馏区上方汽提纯的羧酸酯。 萃取剂是例如 选自二醇，多元醇，开链或环状酰胺。

公开(公告)号：CA2647083A1

公开(公告)日：2007-11-29

申请号：CA2647083

申请日：2007-05-16

Applicant: BASF SE

Inventor： WINDECKER GUNTHER ,  PINKOS ROLF ,  KAIBEL GERD ,  DAHLHOFF ELLEN ,  HEIMANN JENS

IPC: C07D307/34 ,  C07C51/64

Abstract: The present invention provides a process for preventing fumaric acid deposits in the preparation of maleic anhydride, comprising the following steps: a) absorption of a C4-dicarboxylic acid or of a derivative from a crude product mixture into an organic solvent or water as an absorbent, b) removal of the C4-dicarboxylic acid or of a derivative from the absorbent, the absorbent thus recovered being catalytically hydrogenated fully or partly and recycled fully or partly into the absorption stage (a).