公开(公告)号：US4370491A

公开(公告)日：1983-01-25

申请号：US263470

申请日：1981-05-14

申请人： Kaspar Bott ,  Gerd Kaibel ,  Herwig Hoffmann ,  Rudolf Irnich ,  Eberhard Schaefer

发明人： Kaspar Bott ,  Gerd Kaibel ,  Herwig Hoffmann ,  Rudolf Irnich ,  Eberhard Schaefer

IPC分类号： C07C67/03 ,  B01D3/36 ,  C07C67/02 ,  C07C69/14 ,  C07C67/06

CPC分类号： C07C67/03 ,  Y10S203/06

摘要： A process for the preparation of acetic acid esters CH.sub.3 --CO--O--R.sup.1 (I, R.sup.1 =an organic radical other than methyl and ethyl) by alkali-catalyzed trans-esterification of an acetic acid ester CH.sub.3 --CO--O--R.sup.2 (II, R.sup.2 =methyl or ethyl) with an alcohol R.sup.1 --OH (III), accompanied by elimination of the alcohol R.sup.2 --OH (IV), wherein(a) the trans-esterification reaction is carried out in the middle section K.sub.M of a distillation column K, the alcohol III being fed as liquid into the upper zone and the ester II into the lower zone of K.sub.M,(b) the alkaline catalyst is introduced into the upper part K.sub.U of K,(c) the alcohol IV, or a mixture of IV and the ester II, is taken off the top of the column,(d) the mixture obtained from (c) (unless the alcohol IV alone is obtained) is separated in the column section K.sub.U or in a stripper column K.sub.S into IV and the azeotrope of II and IV, and the latter is recycled to the lower zone of K.sub.M,(e) the ester I is taken as vapor or liquid from the lower zone of the lower section K.sub.L of K and(f) the catalyst is either removed, or recycled to K.sub.U, in a conventional manner.

摘要翻译： 通过乙酸酯CH3-CO-O-R2的碱催化反式酯化制备乙酸酯CH 3 -CO-O-R 1（I，R 1 =甲基和乙基以外的有机基）的方法 II，R 2 =甲基或乙基）与醇R 1 -OH（III）反应，同时除去醇R 2 -OH（Ⅳ），其中（a）酯交换反应在 蒸馏塔K，醇III作为液体进料到上部区域，酯II进入KM的下部区域，（b）将碱性催化剂引入K的上部KU，（c）醇IV，或 将IV和酯II的混合物从柱顶部取出，（d）从（c）获得的混合物（除非单独获得醇IV）在柱部分KU或汽提塔KS中分离 进入IV和II和IV的共沸物，后者再循环到KM的下部区域，（e）将酯I作为蒸汽或液体从下部KL的下部区域中取出 的K和（f）催化剂以常规方式被去除或再循环至KU。

公开(公告)号：US4659866A

公开(公告)日：1987-04-21

申请号：US347578

申请日：1982-02-10

申请人： Kaspar Bott ,  Gerd Kaibel ,  Herwig Hoffmann ,  Rudolf Irnich ,  Otto Kratzer

发明人： Kaspar Bott ,  Gerd Kaibel ,  Herwig Hoffmann ,  Rudolf Irnich ,  Otto Kratzer

IPC分类号： C07C231/02 ,  C07C20060101 ,  C07C67/00 ,  C07C231/00 ,  C07C233/03 ,  C07C102/06

CPC分类号： C07C231/02

摘要： Formamide is prepared continuously from methyl formate and ammonia, pure methanol being recovered, by a process wherein(a) the reaction of methyl formate and ammonia is carried out predominantly in the liquid phase in the upper region of a reaction column R having a total of from 15 to 30 theoretical plates,(b) the methanol formed in this reaction is removed, together with small amounts of formamide, from the column or the evaporator in vaporus form at the level of plates 1-5 (counted from the bottom),(c) the formamide is removed from this methanol/formamide mixture, together with small amounts of methanol, in a distillation column D1 and recycled to R, and(d) the small amounts of methanol contained in the bottom product from R, which substantially consists of formamide and in this column should be at from 110.degree. to 130.degree. C., are separated off in a distillation column D2.

摘要翻译： 甲酸甲酯由甲酸甲酯和氨，回收的纯甲醇连续制备，其中（a）甲酸甲酯和氨的反应主要在反应塔R的上部区域的液相中进行，其总共具有 从15到30个理论塔板，（b）将该反应中形成的甲醇与少量甲酰胺一起从塔或蒸发器以蒸汽形式在板1-5的水平（从底部计数）中除去， （c）将甲酰胺与蒸馏塔D1中的少量甲醇一起从该甲醇/甲酰胺混合物中除去并再循环至R，和（d）从R中的底部产物中含有的少量甲醇，其基本上 由甲酰胺组成，该柱应在110℃至130℃，在蒸馏塔D2中分离。

公开(公告)号：US4262140A

公开(公告)日：1981-04-14

申请号：US99760

申请日：1979-12-03

申请人： Kaspar Bott ,  Gerd Kaibel ,  Herwig Hoffmann ,  Otto Kratzer ,  Rudolf Irnich

发明人： Kaspar Bott ,  Gerd Kaibel ,  Herwig Hoffmann ,  Otto Kratzer ,  Rudolf Irnich

IPC分类号： C07C53/02 ,  C07C51/00 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C67/00 ,  B01D3/34

CPC分类号： C07C51/44 ,  C07C51/09 ,  C07C51/48

摘要： A process for the production of anhydrous or substantially anhydrous formic acid by hydrolysis of methyl formate which is carried out in a column having an upper fractionating section, a middle hydrolysis section and a lower extraction section and in which(a) the hydrolysis is carried out in the middle section of the columm, with water and methyl formate in countercurrent,(b) the resulting formic acid is extracted, in the lower section of the column, by means of a carboxylic acid amide which is fed into the lower end of the middle section of the column,(c) the extract phase, consisting in the main of formic acid and the carboxylic acid amide, is distillatively dehydrated, or substantially dehydrated, in the lower section of the column,(d) the methanol and uncovered methyl formate are removed by fractional distillation in the upper section of the column and(e) the pure formic acid or concentrated aqueous formic acid is distilled from the anhydrous or substantially anhydrous extract phase in a second column, leaving the carboxylic acid amide.

摘要翻译： 一种通过水解甲酸甲酯生产无水或基本上无水的甲酸的方法，该甲酸甲酯在具有上部分馏段，中间水解段和下部萃取段的塔中进行，其中（a）进行水解 在水的中间部分，与水和甲酸甲酯逆流，（b）所得甲酸在柱的下部通过羧酸酰胺萃取，该羧酸酰胺进料到 塔的中间部分，（c）主要由甲酸和羧酸酰胺组成的提取相在塔的下部进行蒸馏脱水或基本上脱水，（d）甲醇和未被覆盖的甲基 甲酸盐在塔的上部通过分馏除去，（e）从无水或基本上无水的提取物中蒸馏出纯甲酸或浓缩的甲酸水溶液 相在第二塔中，留下羧酸酰胺。

公开(公告)号：US4551208A

公开(公告)日：1985-11-05

申请号：US614280

申请日：1984-05-25

申请人： Kaspar Bott ,  Gerd Kaibel ,  Horst Hartmann ,  Rudolf Irnich ,  Horst Buelow

发明人： Kaspar Bott ,  Gerd Kaibel ,  Horst Hartmann ,  Rudolf Irnich ,  Horst Buelow

IPC分类号： C07C53/02 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00 ,  B01D3/34

CPC分类号： C07C51/44

摘要： Formic acid is recovered, by distillation, from its mixtures with solvents of the general formula I ##STR1## where R.sup.1 is hydrogen, methyl, ethyl or vinyl and R.sup.2 and R.sup.3 are each alkyl, cycloalkyl, aryl or aralkyl, or R.sup.2 and R.sup.3 together form a 1,4- or 1,5-alkylene group, in each case of not more than 8 carbon atoms, with the provisos that the sum of the number of carbon atoms in R.sup.2 and R.sup.3 is 7 to 14 and that only one of these radicals is aryl, by a method in which the distillation is carried out in the presence of a carboxamide II which is selected from the group consisting of formamide, acetamide, propionamide and the same compounds substituted by N-methyl or N,N-dimethyl, and which has a boiling point lower than that of the solvent I.

摘要翻译： 通过蒸馏从其与通式I的溶剂的混合物回收甲酸，其中R1是氢，甲基，乙基或乙烯基，R2和R3各自是烷基，环烷基，芳基或芳烷基，或R2和R3 一起形成1,4-或1,5-亚烷基，每种情况下不超过8个碳原子，条件是R2和R3中碳原子数之和为7〜14，只有一个 这些基团是芳基，其中蒸馏在选自甲酰胺，乙酰胺，丙酰胺和与N-甲基或N，N-二甲基甲酰胺取代的相同化合物的羧酰胺II存在下进行， 二甲基，其沸点低于溶剂I.

公开(公告)号：US4326073A

公开(公告)日：1982-04-20

申请号：US131501

申请日：1980-03-18

申请人： Dieter Wolf ,  Rudolf Schmidt ,  Ulrich Block ,  Hartmut Schoenmakers ,  Kaspar Bott ,  Gerd Kaibel

发明人： Dieter Wolf ,  Rudolf Schmidt ,  Ulrich Block ,  Hartmut Schoenmakers ,  Kaspar Bott ,  Gerd Kaibel

IPC分类号： C07C53/02 ,  C07C27/02 ,  C07C51/00 ,  C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C67/00

CPC分类号： C07C51/09 ,  C07C51/48

摘要： Anhydrous or substantially anhydrous formic acid is obtained by hydrolysis of methyl formate, in a process wherein(a) methyl formate is hydrolyzed,(b) the methanol and excess methyl formate are distilled from the hydrolysis mixture obtained,(c) the bottom product of distillation (b), consisting of formic acid and water, is extracted, in a liquid-liquid extraction, with an extractant which in the main takes up the formic acid,(d) the resulting extract phase, consisting of formic acid, the extractant and a part of the water, is subjected to distillation,(e) the top product obtained from this distillation and consisting of all or part of the water introduced into the distillation, and part of the formic acid, is recycled, as vapor, into the lower part of the distillation column of stage (b),(f) the bottom product of distillation stage (d), consisting of the extractant, with or without part of the water, and the greater part of the formic acid, is separated by distillation into anhydrous or substantially anhydrous formic acid and the extractant, and(g) the extractant leaving stage (f) is recycled to the process.

摘要翻译： 在（a）甲酸甲酯水解的过程中，（甲）甲醇和过量的甲酸甲酯从得到的水解混合物中蒸馏得到，（c）甲酸叔丁酯的底部产物 蒸馏（b）由甲酸和水组成，在液 - 液萃取中用主要萃取甲酸的萃取剂萃取，（d）所得提取相由甲酸，萃取剂 和一部分水进行蒸馏，（e）由该蒸馏获得的顶部产物，并且由引入蒸馏的全部或部分水和部分甲酸作为蒸气循环进入 阶段（b）的蒸馏塔的下部，（f）蒸馏阶段（d）的底部产物，由萃取剂组成，有或没有部分水和大部分甲酸分离 通过蒸馏成无水 粗粉或基本上无水的甲酸和萃取剂，和（g）离开阶段（f）的萃取剂再循环到该方法中。

公开(公告)号：US4162200A

公开(公告)日：1979-07-24

申请号：US871547

申请日：1978-01-23

申请人： Walter Himmele ,  Karl Fischer ,  Gerd Kaibel ,  Kurt Schneider ,  Rudolf Irnich

发明人： Walter Himmele ,  Karl Fischer ,  Gerd Kaibel ,  Kurt Schneider ,  Rudolf Irnich

IPC分类号： B01D3/40 ,  C07C68/06 ,  C07C68/08 ,  C07C69/00 ,  C07C69/96

CPC分类号： C07C68/065 ,  C07C68/08

摘要： Dimethyl carbonate is obtained pure, from its solutions in methanol, by extractive distillation carried out with a temperature of from 60.degree. C. at the top to 250.degree. C. at the bottom of the column and employing, as the extractant, an aprotic organic liquid which is substantially inert toward dimethyl carbonate, boils at above 100.degree. C. at standard pressure, is miscible with dimethyl carbonate in all proportions and has a dielectric constant .epsilon. of from 4 to 90 and a dipole moment .mu. of from 1.5 to 5 Debye.

摘要翻译： 碳酸二甲酯从其甲醇溶液中通过萃取蒸馏得到，温度为60℃，塔顶至250℃，采用萃取剂为非质子有机物 对碳酸二甲酯基本上是惰性的液体在标准压力下在高于100℃下沸腾，与所有比例的碳酸二甲酯混溶，并且介电常数ε为4-90，偶极矩μ为1.5至5德拜 。

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。