公开(公告)号：US06831182B2

公开(公告)日：2004-12-14

申请号：US10433424

申请日：2003-06-04

申请人： Holger Borchert ,  Stephan Schlitter ,  Rolf-Hartmuth Fischer ,  Markus Rösch ,  Frank Stein ,  Ralf-Thomas Rahn ,  Alexander Weck ,  Gerd Kaibel

发明人： Holger Borchert ,  Stephan Schlitter ,  Rolf-Hartmuth Fischer ,  Markus Rösch ,  Frank Stein ,  Ralf-Thomas Rahn ,  Alexander Weck ,  Gerd Kaibel

IPC分类号： C07D30708

CPC分类号： C07D307/08

摘要： The present invention relates to a process for the gas-phase hydrogenation of C4-dicarboxylic acids and/or their derivatives over a catalyst based on copper oxide to give substituted or unsubstituted &ggr;-butyrolactone and/or tetrahydrofuran, which comprises, which a first reaction zone in which the C4-dicarboxylic acid and/or its derivatives is/are reacted to give a mixture comprising a substituted or unsubstituted &ggr;-butyrolactone as main product and a subsequent second reaction zone in which the substituted or unsubstituted &ggr;-butyrolactone present in the mixture from the first hydrogenation step is reacted at a temperature lower than the temperature in the first hydrogenation step to give substituted or unsubstituted tetrahydrofuran.

公开(公告)号：US06846389B2

公开(公告)日：2005-01-25

申请号：US10258938

申请日：2001-05-03

申请人： Gerd Kaibel ,  Alexander Weck ,  Ralf-Thomas Rahn

发明人： Gerd Kaibel ,  Alexander Weck ,  Ralf-Thomas Rahn

IPC分类号： B01D3/14 ,  B01D3/26 ,  C07C27/28 ,  C07C29/80 ,  C07C31/20 ,  C07D307/08 ,  C07D307/33 ,  B01D3/42

CPC分类号： C07D307/33 ,  B01D3/14 ,  B01D3/141 ,  B01D3/146 ,  C07C29/80 ,  C07D307/08 ,  Y10S203/09 ,  Y10S203/20 ,  C07C31/207

摘要： In a process for the continuous fractional distillation of mixtures comprising tetrahydrofuran, γ-butyrolactone and/or 1,4-butanediol to give at least three fractions, the fractionation is carried out in an assembly of distillation columns comprising at least one dividing wall column or at least one assembly of thermally coupled conventional distillation columns.

摘要翻译： 在包括四氢呋喃，γ-丁内酯和/或1,4-丁二醇的混合物的连续分馏的方法中，得到至少三个级分，分馏在包括至少一个分隔壁塔或 至少一个热偶联常规蒸馏塔的组件。

公开(公告)号：US06921830B2

公开(公告)日：2005-07-26

申请号：US10475219

申请日：2002-04-22

申请人： Ralf-Thomas Rahn ,  Alexander Weck ,  Gerd Kaibel

发明人： Ralf-Thomas Rahn ,  Alexander Weck ,  Gerd Kaibel

IPC分类号： C07D307/60 ,  C07C51/215 ,  C07C51/44 ,  C07C51/573 ,  C07C57/145 ,  C07C57/15 ,  C07D307/36

CPC分类号： C07C51/215 ,  C07C51/573 ,  C07C57/145

摘要： In a process for purifying an organic solvent for the absorption of maleic anhydride from a gaseous mixture, in which the maleic anhydride is separated off from the solvent, a substream is taken from the solvent stream, this substream is distilled and returned to the solvent circuit, the proposed improvement comprises separating off a low-boiling fraction and a high-boiling fraction from the fraction consisting essentially of purified solvent and feeding the fraction consisting essentially of purified solvent back into the solvent stream.

摘要翻译： 在从溶剂中分离马来酸酐的气体混合物中纯化用于吸收马来酸酐的有机溶剂的方法中，从溶剂流中取出一个子流，蒸馏该子流并返回溶剂回路 所提出的改进包括从基本上由纯化溶剂组成的馏分中分离低沸点馏分和高沸点馏分，并将基本上由纯化溶剂组成的馏分反馈回溶剂流中。

公开(公告)号：US06433192B1

公开(公告)日：2002-08-13

申请号：US09673847

申请日：2001-06-04

申请人： Rolf Fischer ,  Gerd Kaibel ,  Rolf Pinkos ,  Ralf-Thomas Rahn

发明人： Rolf Fischer ,  Gerd Kaibel ,  Rolf Pinkos ,  Ralf-Thomas Rahn

IPC分类号： C07D30702

CPC分类号： C07D315/00 ,  C07C29/149 ,  C07D307/08 ,  C07C31/207

摘要： In a process for preparing 1,4-butanediol, tetrahydrofuran and &ggr;-butyrolactone by oxidation of butane to give a product stream comprising maleic anhydride, absorption of maleic anhydride from the product stream using a high-boiling alcohol to give a liquid absorption product comprising monoesters and diesters of maleic acid and also high-boiling alcohol, after-esterification of the liquid absorption product and subsequent hydrogenation of the after-esterified product in the liquid phase, the high-boiling alcohol is a polyhydric alcohol having a boiling point at atmospheric pressure of above 233° C. and the after-esterified product has an acid number of less than 30 mg KOH/g and a water content of less than 1% by weight.

摘要翻译： 在通过丁烷氧化制备1,4-丁二醇，四氢呋喃和γ-丁内酯以产生包含马来酸酐的产物流的方法中，使用高沸点醇从产物流中吸收马来酸酐，得到液体吸收产物，其包含 马来酸的单酯和二酯以及高沸点醇，液体吸收产物的酯化和后期酯化产物在液相中的氢化后，高沸点醇是沸点在大气压下的多元醇 高于233℃的压力，后酯化产物的酸值小于30mg KOH / g，水含量小于1重量％。

公开(公告)号：US06350924B1

公开(公告)日：2002-02-26

申请号：US09673134

申请日：2000-10-11

申请人： Rolf Fischer ,  Gerd Kaibel ,  Rolf Pinkos ,  Ralf-Thomas Rahn

发明人： Rolf Fischer ,  Gerd Kaibel ,  Rolf Pinkos ,  Ralf-Thomas Rahn

IPC分类号： C07C2700

CPC分类号： C07D315/00 ,  C07C29/177 ,  C07D307/08 ,  C07C31/207

摘要： A process for preparing 1,4-butanediol and, if desired, &ggr;-butyrolactone and THF by oxidizing butane or benzene to form a product stream including maleic anhydride, absorbing maleic anhydride from the product stream with a high-boiling inert solvent in an absorption stage to give a liquid absorption product, esterifying the liquid absorption product with a C1-C5 esterifying alcohol in an esterification stage to form an esterification product comprising the corresponding diester and high-boiling inert solvent, then hydrogenating the esterification product to give a hydrogenation product which comprises the products of value, 1,4-butanediol and, if desired, &ggr;-butyrolactone and tetrahydrofuran and the esterifying alcohol and which is separated by distillation into the products of value and the esterifying alcohol, and recycling the esterifying alcohol to the esterification zone, which comprises separating the esterification product into the diester and the inert solvent by distillation under reduced pressure prior to the hydrogenation, recycling the inert solvent to the absorption stage, and hydrogenating the diester in the liquid phase over a fixed-bed catalyst.

摘要翻译： 通过氧化丁烷或苯来制备1,4-丁二醇和（如果需要的话）γ-丁内酯和THF以形成包含马来酸酐的产物流的方法，在吸收中用高沸点惰性溶剂从产物流中吸收马来酸酐 阶段以得到液体吸收产物，在酯化阶段用C1-C5酯化醇酯化液体吸收产物以形成包含相应的二酯和高沸点惰性溶剂的酯化产物，然后氢化酯化产物得到氢化产物 其包括价值的产物，1,4-丁二醇，如果需要的话，γ-丁内酯和四氢呋喃和酯化醇，并通过蒸馏分离成产物和酯化醇，并将酯化醇再循环到酯化反应 其包括通过蒸馏分离酯化产物成二酯和惰性溶剂 在氢化之前在减压下进行反应，将惰性溶剂循环到吸收阶段，并在固定床催化剂中使液相中的二酯氢化。

公开(公告)号：US06054628A

公开(公告)日：2000-04-25

申请号：US955076

申请日：1997-10-21

申请人： Manfred Stroezel ,  Udo Rheude ,  Ralf-Thomas Rahn ,  Gerd Kaibel

发明人： Manfred Stroezel ,  Udo Rheude ,  Ralf-Thomas Rahn ,  Gerd Kaibel

IPC分类号： C07B49/00 ,  C07C29/124 ,  C07C29/40 ,  C07C31/00 ,  C07C33/02 ,  C07C35/18

CPC分类号： C07C29/40

摘要： In a process for carrying out an exothermal reaction, selected from the addition reaction of organomagnesium halide compounds to carbonyl compounds and the ensuing hydrolysis of the addition product, a considerable fraction of the heat liberated during the reaction is removed by evaporation of the solvent.

摘要翻译： 在进行放热反应的方法中，选自有机卤化镁化合物与羰基化合物的加成反应以及随后的加成产物的水解，通过蒸发溶剂除去反应期间释放出的相当大部分的热量。

公开(公告)号：US20140061020A1

公开(公告)日：2014-03-06

申请号：US14057017

申请日：2013-10-18

申请人： Willi Schmidt ,  Gerd Kaibel ,  Elke Geißler ,  Wolfgang Reif ,  Manfred Julius ,  Frank-Friedrich Pape

发明人： Willi Schmidt ,  Gerd Kaibel ,  Elke Geißler ,  Wolfgang Reif ,  Manfred Julius ,  Frank-Friedrich Pape

IPC分类号： B01D3/32

CPC分类号： B01D3/32 ,  B01D3/14 ,  B01D3/42 ,  C07C213/04 ,  C07C213/10 ,  Y02P20/582 ,  C07C215/08 ,  C07C215/10

摘要： Apparatus and processes for continuous distillative separation of a mixture comprising one or more alkanolamine(s) are described. The separation is performed in one or more dividing wall column(s) and the alkanolamine or the alkanolamines is/are withdrawn as a side draw stream or side draw streams (side fraction(s)).

摘要翻译： 描述了包含一种或多种链烷醇胺的混合物的连续蒸馏分离的装置和方法。 分离在一个或多个分隔壁柱中进行，并且链烷醇胺或链烷醇胺作为侧馏分流或侧馏分流（侧馏分）排出。

公开(公告)号：US20100113805A1

公开(公告)日：2010-05-06

申请号：US12532660

申请日：2008-03-19

申请人： Gunther Windecker ,  Gerd Kaibel ,  Michael Steiniger ,  Thilo Buntrock ,  Jens Weiguny ,  Dany Vanden Hautte ,  Thierry Lurquin

发明人： Gunther Windecker ,  Gerd Kaibel ,  Michael Steiniger ,  Thilo Buntrock ,  Jens Weiguny ,  Dany Vanden Hautte ,  Thierry Lurquin

IPC分类号： C07D307/60

CPC分类号： B01D3/14 ,  B01D3/141 ,  C07C51/573 ,  C07C57/145

摘要： What is described is a process for obtaining maleic anhydride by distillation from a solution of maleic anhydride in a high-boiling absorbent which has been obtained by gas phase oxidation of a hydrocarbon and at least partial absorption of the oxidation products into the absorbent, by i) introducing the solution into the side of a feed column with a rectifying section disposed above the feed point and a stripping section disposed below the feed point, ii) providing an upper combining column which communicates with the upper end of the rectifying section and a lower combining column which communicates with the lower end of the stripping section, iii) providing a draw column which communicates with the upper combining column and the lower combining column, iv) drawing maleic anhydride off as a side draw from the draw column, and drawing off compounds having a lower boiling point than maleic anhydride at the top of the upper combining column and the high-boiling absorbent at the bottom of the lower combining column. The maleic anhydride obtained as a side draw has a low content of acrylic acid and acetic acid.

摘要翻译： 所描述的是通过蒸馏从马来酸酐在高沸点吸收剂中的溶液获得马来酸酐的方法，其通过烃的气相氧化和至少部分吸收氧化产物进入吸收剂中获得， 将溶液引入进料塔的侧面，其中设置在进料点上方的精馏部分和设置在进料点下方的汽提部分，ii）提供与精馏部分的上端连通的上部混合塔和下部 组合柱与汽提部分的下端连通，iii）提供与上部混合塔和下部混合塔连通的牵引柱，iv）将拉伸马来酸酐作为拉伸塔的牵引拉出，拉出 在上部混合塔的顶部具有比马来酸酐低的沸点的化合物和在底部o的高沸点吸收剂 f下组合列。 作为侧馏分获得的马来酸酐具有低含量的丙烯酸和乙酸。

公开(公告)号：US20100081804A1

公开(公告)日：2010-04-01

申请号：US12090377

申请日：2006-10-16

申请人： Bram Willem Hoffer ,  Hartwig Voss ,  Ekkehard Schwab ,  Udo Rheude ,  Gerd Kaibel ,  Mathias Haake ,  Jan Eberhardt ,  Michael Karcher

发明人： Bram Willem Hoffer ,  Hartwig Voss ,  Ekkehard Schwab ,  Udo Rheude ,  Gerd Kaibel ,  Mathias Haake ,  Jan Eberhardt ,  Michael Karcher

IPC分类号： C07D265/30 ,  C07C45/00

CPC分类号： C07C45/62 ,  C07C47/228 ,  C07C49/04 ,  C07C47/02

摘要： A process is described for continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, wherein the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.

摘要翻译： 描述了在第一部分氢气压力下在氢气存在下将不饱和化合物连续氢化的方法，其中第一氢化催化剂的颗粒悬浮在其中溶解不饱和化合物的液相中，液相，以及 在第一个温度下，通过气泡塔反应器与重力方向并流，将来自泡罩塔反应器的流出物送入气液分离，将液相送至交叉过滤，得到滞留物 和滤液，将滞留物再循环到泡罩塔反应器中，并且在第二部分氢气压力和第二温度下在氢气存在下将滤液通过第二氢化催化剂床，其中第二 部分氢气压力比第一部分氢气压力高至少10巴。

公开(公告)号：US20090143601A1

公开(公告)日：2009-06-04

申请号：US12300571

申请日：2007-05-16

申请人： Rolf Pinkos ,  Gerd Kaibel ,  Ellen Dahlhoff ,  Gunther Windecker ,  Jens Heimann

发明人： Rolf Pinkos ,  Gerd Kaibel ,  Ellen Dahlhoff ,  Gunther Windecker ,  Jens Heimann

IPC分类号： C07D307/60

CPC分类号： C07C51/573 ,  C07C57/145

摘要： 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).

摘要翻译： 本发明提供了一种在制备马来酸酐中防止富马酸沉积的方法，包括以下步骤：a）将C4-二羧酸或衍生物从粗产物混合物中吸收到作为吸收剂的有机溶剂或水中 b）从吸收剂中除去C4-二羧酸或衍生物，这样回收的吸收剂被完全或部分催化氢化，或者完全或部分地再循环到吸收阶段（a）中。