Invention Grant
- Patent Title: Process for purifying crude furan 2,5-dicarboxylic acid using hydrogenation
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Application No.: US14841867Application Date: 2015-09-01
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Publication No.: US09458122B2Publication Date: 2016-10-04
- Inventor: Ashfaq Shahanawaz Shaikh , Kenny Randolph Parker , Mesfin Ejerssa Janka , Lee Reynolds 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
- Agency: Phan Law Group PLLC
- Main IPC: C07D307/68
- IPC: C07D307/68

Abstract:
A process to produce a dry purified furan-2,5-dicarboxylic acid (FDCA) is described. After oxidation of 5-(hydroxymethyl)furfural (5-HMF), a crude FDCA stream is produced that is fed to a crystallization zone followed by a solid-liquid displacement zone to form a low impurity slurry stream. The solids in the low impurity slurry stream are dissolved in a dissolution zone to produce a hydrogenation feed that is hydrogenated in a hydrogenation reactor to generate a hydrogenated FDCA composition. The hydrogenated FDCA composition is routed to a crystallization zone to form a crystallized produce stream that is separated from liquid in a solid-liquid separation zone to generate a purified wet cake stream containing FDCA that can be dried in a drying zone to generate a dry purified FDCA product stream.
Public/Granted literature
- US20150368219A1 Process for Purifying Crude Furan 2,5-Dicarboxylic Acid Using Hydrogenation Public/Granted day:2015-12-24
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