公开(公告)号：US20150368176A1

公开(公告)日：2015-12-24

申请号：US14763196

申请日：2014-01-24

申请人： DAICEL CORPORATION

发明人： Hiroyuki MIURA ,  Masahiko SHIMIZU ,  Takashi UENO

IPC分类号： C07C51/44 ,  C07C51/47 ,  C07C51/12

CPC分类号： C07C51/44 ,  C07C51/12 ,  C07C51/47 ,  C07C53/08

摘要： A process and a production apparatus for producing a high-purity carboxylic acid, from which a metal-containing impurity and/or a carbonyl-group-containing impurity have been highly purified, are provided.The process for producing a carboxylic acid according to the present invention comprises subjecting a carboxylic acid stream containing a metal-containing impurity to a first flash system 1 to give a vaporized fraction, distilling the vaporized fraction by a distillation system 5 to separate into a stream mainly containing a carboxylic acid and a fraction containing a high-volatile impurity (or lower boiling point impurity), and feeding the separated stream mainly containing the carboxylic acid to a second flash system 10 or an adsorption system to form a purified carboxylic acid.

摘要翻译： 提供了高纯度地制备含有金属的杂质和/或含有羰基的杂质的高纯度羧酸的方法和制造装置。 根据本发明的制备羧酸的方法包括将含有含金属的杂质的羧酸料流经受第一闪蒸系统1以得到汽化部分，通过蒸馏系统5蒸馏蒸发的馏分以分离成流 主要含有羧酸和含有高挥发性杂质（或低沸点杂质）的级分，并将主要含有羧酸的分离流供给第二闪蒸系统10或吸附系统以形成纯化的羧酸。