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1. 发明授权

US06695952B1 Method for the separation of and purification of an aqueous mixture consisting of the main components acetic acid and formic acid 失效
标题翻译：由主要组分乙酸和甲酸组成的含水混合物的分离和纯化方法
公开(公告)号：US06695952B1
公开(公告)日：2004-02-24
申请号：US10030533
申请日：2002-01-09
申请人： Christoph Rüdinger , Harald Herbert Voit , Michael Hallmann , Mehmet Günaltay , Barbara Geborene Neé Reil Wild , Hans Jürgen Eberle
发明人： Christoph Rüdinger , Harald Herbert Voit , Michael Hallmann , Mehmet Günaltay , Barbara Geborene Neé Reil Wild , Hans Jürgen Eberle
IPC分类号： B01D1100
CPC分类号： C07C51/44 , C07C51/46 , C07C51/48 , Y10S203/20 , C07C53/08 , C07C53/02
摘要： A method for the separation and purification of an aqueous mixture of main components, namely acetic acid and formic acid and non-volatiles by extraction, uses a solvent in a circulatory system. A raffinate stream is mixed with the larger proportion of water from a solvent stripper column (11) for the removal of water. The extraction stream is introduced into a solvent distillation column (8), from which in a first step involving the use of a mixture (A) containing a larger proportion of the solvent is separated out via a header and a mixture (B) of formic acid, water and solvent is separated out via a side offtake and a mixture (C) of acetic acid and non-volatiles is also separated out. A mixture (B) is introduced into a formic acid distillation column (4) for further processing, and a mixture (C) is introduced into an acetic acid distillation column (5), and purified acetic acid is subsequently isolated in the acetic acid distillation column (5) from the header. Pure formic acid is isolated at the settling basin of the formic acid distillation column (4).
摘要翻译：通过提取分离和纯化主要成分的水性混合物，即乙酸和甲酸和非挥发物的方法，在循环系统中使用溶剂。将萃余液流与来自溶剂汽提塔（11）的较大比例的水混合以除去水。将萃取物流引入溶剂蒸馏塔（8）中，在包含较大比例溶剂的混合物（A）的第一步骤中，通过头部和甲酸的混合物（B）酸，水和溶剂通过侧面分离，乙酸和非挥发物的混合物（C）也被分离出来。将混合物（B）引入甲酸蒸馏塔（4）中进一步处理，并将混合物（C）引入乙酸蒸馏塔（5）中，随后在乙酸蒸馏中分离纯化的乙酸列（5）。在甲酸蒸馏塔（4）的沉降池中分离出纯甲酸。

2. 发明授权

US06793777B1 Method for separating and purifying an aqueous mixture that mainly consists of acetic acid and formic acid 失效
标题翻译：用于分离和纯化主要由乙酸和甲酸组成的含水混合物的方法
公开(公告)号：US06793777B1
公开(公告)日：2004-09-21
申请号：US10009507
申请日：2001-12-05
申请人： Christoph Rüdinger , Harald Herbert Voit , Michael Hallmann , Mehmet Günaltay , Barbara Reil , Hans-Jürgen Eberle
发明人： Christoph Rüdinger , Harald Herbert Voit , Michael Hallmann , Mehmet Günaltay , Barbara Reil , Hans-Jürgen Eberle
IPC分类号： B01D314
CPC分类号： C07C51/48 , C07C51/44 , Y10S203/08 , Y10S203/20 , C07C53/02 , C07C53/08
摘要： The invention relates to a method for separating and purifying an aqueous mixture that mainly consists of acetic acid, formic acid and high-boiling substances by extraction with a solvent in a cyclic process. The inventive method is characterized in that the flow of raffinate is fed to a solvent stripping column (11) with the major part of the water in order to remove the water from the cycle. The flow of extract is fed to a solvent recovery distillation column (8). In a first step, a mixture (A) that consists of water and solvent, is separated by overhead distillation. A mixture (B) that consists of acetic acid, formic acid and high-boiling substances is separated via a sump. Once the formic acid is removed in a column (29), mixture (B) is separated in an acetic acid distillation column to give pure acetic acid and high-boiling substances. Mixture (A) is fed to a phase separator and the aqueous phase is returned to the solvent stripping column (11) together with any residual portions of the solvent while the organic phase is returned to the extractor (8).
摘要翻译：本发明涉及一种通过在循环过程中用溶剂萃取来分离和纯化主要由乙酸，甲酸和高沸点物质组成的含水混合物的方法。本发明的方法的特征在于，萃余液的流动与主要部分的水一起进料到溶剂汽提塔（11），以便从循环中除去水。将萃取物流送入溶剂回收蒸馏塔（8）。在第一步中，由水和溶剂组成的混合物（A）通过塔顶蒸馏分离。由乙酸，甲酸和高沸点物质组成的混合物（B）通过贮槽分离。一旦在柱（29）中除去甲酸后，将混合物（B）在乙酸蒸馏塔中分离，得到纯乙酸和高沸点物质。将混合物（A）进料到相分离器中，并将水相与溶剂的任何残留部分一起返回到溶剂汽提塔（11），同时将有机相返回到萃取器（8）。

3. 发明授权

US06884909B2 Process for preparing saturated carboxylic acids having from one to four carbon atoms by gas-phase oxidation of 2-butanone 失效
标题翻译：通过2-丁酮的气相氧化制备具有1-4个碳原子的饱和羧酸的方法
公开(公告)号：US06884909B2
公开(公告)日：2005-04-26
申请号：US10285206
申请日：2002-10-31
申请人： Christoph Rüdinger , Harald Herbert Voit , Hans-Jürgen Eberle
发明人： Christoph Rüdinger , Harald Herbert Voit , Hans-Jürgen Eberle
IPC分类号： C07B61/00 , C07C51/245 , C07C51/44 , C07C51/48 , C07C53/02 , C07C53/08 , C07B53/00
CPC分类号： C07C51/245 , C07C53/08 , C07C53/02
摘要： A process for preparing saturated carboxylic acids having from one to four carbon atoms by gas-phase oxidation, includes reacting 2-butanone with oxygen over a coated catalyst which is an inert nonporous support body and a catalytically active mixed oxide composition comprising (a) one or more oxides selected from the group consisting of titanium dioxide, zirconium dioxide, tin dioxide and aluminum oxide, and (b) from 0.1% to 1.5% by weight, based on the weight of the component (a) and per m2/g of specific surface area of the component (a), of vanadium pentoxide, applied to the external surface of the support body.
摘要翻译：通过气相氧化制备具有1-4个碳原子的饱和羧酸的方法包括使2-丁酮与氧反应在作为惰性无孔载体的涂覆催化剂和催化活性混合氧化物组合物上，该组合物包含（a）一种或更多选自二氧化钛，二氧化锆，二氧化锡和氧化铝的氧化物，和（b）基于组分（a）和每摩尔重量的0.1重量％至1.5重量％（a）的五氧化二钒的比表面积的2×2 / g，施加到支撑体的外表面。

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