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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
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。
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2.发明申请Distillative merthod for separating narrow boiling or azeotropic mixtures using ionic liquids 审中-公开使用离子液体分离窄沸腾或共沸混合物的蒸馏法公开(公告)号：US20070080052A1
公开(公告)日：2007-04-12
申请号：US10566935
申请日：2004-07-15
申请人： York Beste , Hartmut Schoenmakers
发明人： York Beste , Hartmut Schoenmakers
IPC分类号： B01D3/34
摘要： A process for separating azeotropic or close-boiling mixtures by means of an extractive rectification in which an ionic liquid is used as entrainer, wherein a high boiling bottom product is taken off from the column in vapor form via a side offtake.
摘要翻译： 一种通过萃取精馏分离共沸或近沸点混合物的方法，其中使用离子液体作为夹带剂，其中高沸点底部产物通过蒸汽形式通过侧面脱出而从塔中取出。
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公开(公告)号：US07485208B2
公开(公告)日：2009-02-03
申请号：US10566931
申请日：2004-07-15
CPC分类号： B01D3/143 , B01D3/14 , B01D3/343 , Y10S203/20
摘要： Process for working up a bottom stream wherein high boilers and ionic liquid from an extractive rectification in which the ionic liquid is used as entrainer. The process includes feeding the bottom stream to an evaporation stage which is operated at a pressure of less than 500 mbar or to a stripper which is operated through use of inert gas or steam, and the major part of the high boiler present is separated off in vapor form from the ionic liquid.
摘要翻译： 用于处理底部流的方法，其中来自提取精馏的高锅炉和离子液体，其中离子液体用作夹带剂。 该方法包括将底部物流进料到在低于500毫巴的压力下操作的蒸发阶段或通过使用惰性气体或蒸汽操作的汽提塔，并且高温锅炉的主要部分被分离出 蒸汽形式从离子液体。
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公开(公告)号：US20090071813A1
公开(公告)日：2009-03-19
申请号：US11719797
申请日：2005-11-21
CPC分类号： B01D3/36 , B01D3/40 , Y02P20/127
摘要： Processes for chemical reaction and separation in a column comprising, (a) providing one or more reactants to a column; and (b) carrying out at least partially superimposed reactive distillation and extractive distillation on the one or more reactants in the column to form a reaction product mixture comprising at least two components and separate at least one of the components; wherein an ionic liquid is present in the column.
摘要翻译： 在柱中进行化学反应和分离的方法，包括（a）向柱提供一种或多种反应物; 和（b）对塔中的一种或多种反应物进行至少部分叠加的反应性蒸馏和萃取蒸馏以形成包含至少两种组分并分离至少一种组分的反应产物混合物; 其中离子液体存在于塔中。
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公开(公告)号：US20060219545A1
公开(公告)日：2006-10-05
申请号：US10551360
申请日：2004-04-05
IPC分类号： B01D3/00
CPC分类号： C07C231/24 , Y10S203/20 , C07C233/05
摘要： The invention relates to a process for distillatively purifying crude dimethylacetamide (crude DMAc) comprising DMAc, low boilers and high boilers 5 by removing the low boilers and the high boilers to obtain pure DMAc in one of the column configurations listed hereinbelow: (I) a main column (MC) with sidestream column (SC) or (II) a dividing wall column (DWC), which comprises operating at least the main column (MC) in column configuration (I) and the dividing wall column (DWC) in column configuration (II) at a top pressure in the range from 0.5 to 1.8 bar absolute.
摘要翻译： 本发明涉及一种通过除去低锅炉和高锅炉以获得下列列出的配置之一的纯DMAc来蒸馏精制包含DMAc，低锅炉和高锅炉的粗二甲基乙酰胺（粗DMAc）的方法：（I）a 具有侧流柱（SC）或（II）分隔壁塔（DWC）的主塔（MC），其包括至少在列构型（I）中的主塔（MC）和列分隔壁塔（DWC） 配置（II）在顶部压力范围为0.5至1.8巴绝对值。
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公开(公告)号：US06627756B1
公开(公告)日：2003-09-30
申请号：US09613718
申请日：2000-07-11
申请人： Hartmut Riechers , Arthur Höhn , Joachim Simon , Ortmund Lang , Hartmut Schoenmakers , Matthias Rauls , Koen Claerbout
发明人： Hartmut Riechers , Arthur Höhn , Joachim Simon , Ortmund Lang , Hartmut Schoenmakers , Matthias Rauls , Koen Claerbout
IPC分类号： C07D48708
CPC分类号： C07D487/08
摘要： Pure triethylenediamine (TEDA) is prepared by vaporizing TEDA, introducing the gaseous TEDA into a liquid solvent and subsequently crystallizing the TEDA from the solution obtained in this way.
摘要翻译： 通过蒸发TEDA，将气态TEDA引入液体溶剂中并随后从以这种方式获得的溶液中使TEDA结晶来制备纯三亚乙基二胺（TEDA）。
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公开(公告)号：US07547378B2
公开(公告)日：2009-06-16
申请号：US10551360
申请日：2004-04-05
IPC分类号： B01D3/42 , C07C231/24
CPC分类号： C07C231/24 , Y10S203/20 , C07C233/05
摘要： The invention relates to a process for distillatively purifying crude dimethylacetamide (crude DMAc) comprising DMAc, low boilers and high boilers 5 by removing the low boilers and the high boilers to obtain pure DMAc in one of the column configurations listed hereinbelow: (I) a main column (MC) with sidestream column (SC) or (II) a dividing wall column (DWC), which operating at least the main column (MC) in column configuration (I) and the dividing wall column (DWC) in column configuration (II) at a top pressure in the range from 0.5 to 1.8 bar absolute.
摘要翻译： 本发明涉及一种通过除去低锅炉和高锅炉以获得下列列出的配置之一的纯DMAc来蒸馏精制包含DMAc，低锅炉和高锅炉的粗二甲基乙酰胺（粗DMAc）的方法：（I）a 主列（MC），侧流柱（SC）或（II）分隔壁塔（DWC），其列列配置（I）中的至少主塔（MC）和分隔壁塔（DWC） （II）在0.5至1.8巴绝对压力的顶部压力下。
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