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1. 发明申请

US20160229777A1 PURIFICATION OF AN ACETYL STREAM 审中-公开
标题翻译：乙酰胆碱的纯化
公开(公告)号：US20160229777A1
公开(公告)日：2016-08-11
申请号：US14618449
申请日：2015-02-10
申请人： Eastman Chemical Company
发明人： Scott Donald Barnicki , Daniel McNabb , Jerry Lynn Miller , Randy Lynn Jennings
IPC分类号： C07C45/48 , B01D3/36
CPC分类号： C07C45/48 , B01D3/36 , C07C49/08
摘要： A process for purifying an acetyl stream containing an impurity that forms an azeotrope with the acetyl moiety includes the steps of a) contacting an acetyl feed stream comprising: i) acetic acid; and ii) an acetic acid azeotrope-forming compound, with a metal oxide catalyst in a ketonization reactor to produce a crude product mixture from a ketonization reaction comprising acetone, water, the acetic acid azeotrope-forming compound, and byproducts from the ketonization reaction; and b) distilling the crude product mixture to recover: i) a lower boiling fraction stream comprising acetone, and a minor amount of: water, said acetic acid azeotrope-forming compound, and ketonization byproducts, and ii) a higher boiling fraction stream comprising a major amount of: water, the acetic acid azeotrope forming compound, and the ketonization byproducts. Optionally, the process can include contacting the crude product mixture with water in a countercurrent absorber prior to the distilling step (b).
摘要翻译：用于纯化含有与乙酰基部分形成共沸物的杂质的乙酰基流的方法包括以下步骤：a）使乙酰基进料流接触，包括：i）乙酸; 和ii）乙酸共沸物形成化合物，在酮化反应器中与金属氧化物催化剂一起生成来自包含丙酮，水，形成乙酸的共沸物的化合物和来自酮化反应的副产物的酮化反应的粗产物混合物; 和b）蒸馏粗产物混合物以回收：i）包含丙酮和少量的水的低沸点馏分物流，所述乙酸共沸物形成化合物和酮化副产物，和ii）较高沸点馏分物流，其包含主要量：水，乙酸共沸物形成化合物，以及酮化副产物。任选地，该方法可包括在蒸馏步骤（b）之前使粗产物混合物与逆流吸收器中的水接触。

2. 发明申请

US20160229780A1 PROCESS FOR THE PURIFICATION OF ACETONE FROM THE KETONIZATION OF ACETIC ACID 审中-公开
标题翻译：乙酸乙烯酯的乙酸酐的纯化方法
公开(公告)号：US20160229780A1
公开(公告)日：2016-08-11
申请号：US14618466
申请日：2015-02-10
申请人： Eastman Chemical Company
发明人： Scott Donald Barnicki , Randy Lynn Jennings , Daniel McNabb , Jerry Lynn Miller , James Eric Ward
IPC分类号： C07C45/84 , B01D3/36
CPC分类号： C07C45/84 , B01D3/143 , B01D3/36 , C07C49/08
摘要： A method for purification of acetone including the steps of: a) feeding a crude product mixture comprising acetone, water, an impurity to a distillation column; b) withdrawing a liquid side draw stream from the distillation column; c) separating the side draw stream into a water layer and an organic layer, and returning the water layer to the distillation column; and d) recovering from the distillation column: (i) a lower boiling fraction comprising a purified acetone, relative to the crude product mixture and (ii) a higher boiling fraction comprising a major amount of the water.
摘要翻译：一种丙酮纯化方法，包括以下步骤：a）将含有丙酮，水，杂质的粗产物混合物供给蒸馏塔; b）从蒸馏塔中取出液体侧馏出液; c）将侧引流分离成水层和有机层，并将水层返回到蒸馏塔; 和d）从蒸馏塔回收：（i）相对于粗产物混合物的包含纯化丙酮的较低沸点馏分，和（ii）包含大量水的较高沸点馏分。

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