Invention Grant
US09156805B2 Oxidative purification method for producing purified dry furan-2,5-dicarboxylic acid
有权
用于生产纯化的干呋喃-2,5-二羧酸的氧化纯化方法
- Patent Title: Oxidative purification method for producing purified dry furan-2,5-dicarboxylic acid
- Patent Title (中): 用于生产纯化的干呋喃-2,5-二羧酸的氧化纯化方法
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Application No.: US14084165Application Date: 2013-11-19
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Publication No.: US09156805B2Publication Date: 2015-10-13
- Inventor: Ashfaq Shaikh , Kenny R. Parker , Mesfin Ejerssa Janka , Lee R. Partin
- Applicant: Eastman Chemical Company
- Applicant Address: US TN Kingsport
- Assignee: EASTMAN CHEMICAL COMPANY
- Current Assignee: EASTMAN CHEMICAL COMPANY
- Current Assignee Address: US TN Kingsport
- Agent Steven A. Owen
- Main IPC: C07D307/34
- IPC: C07D307/34 ; C07D307/68

Abstract:
Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising FDCA, removing impurities from a crude carboxylic acid slurry via oxidative purification in a low temperature post-oxidation zone to form a low impurity slurry stream. The low impurity slurry stream is further treated in a high temperature post oxidation zone to produce a secondary oxidation slurry stream which is routed to a crystallization zone to from a crystallized slurry stream.
Public/Granted literature
- US20140142328A1 OXIDATIVE PURIFICATION METHOD FOR PRODUCING PURIFIED DRY FURAN-2,5-DICARBOXYLIC ACID Public/Granted day:2014-05-22
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