The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 2014
Filed:
Jul. 20, 2012
Mesfin Ejerssa Janka, Kingsport, TN (US);
Kenny Randolph Parker, Afton, TN (US);
Paula Moody, Johnson City, TN (US);
Ashfaq Shaikh, Kingsport, TN (US);
Lee Reynolds Partin, Kingsport, TN (US);
Bradford Russell Bowers, Chuckey, TN (US);
Michael Charles Morrow, Kingsport, TN (US);
Mesfin Ejerssa Janka, Kingsport, TN (US);
Kenny Randolph Parker, Afton, TN (US);
Paula Moody, Johnson City, TN (US);
Ashfaq Shaikh, Kingsport, TN (US);
Lee Reynolds Partin, Kingsport, TN (US);
Bradford Russell Bowers, Chuckey, TN (US);
Michael Charles Morrow, Kingsport, TN (US);
Eastman Chemical Company, Kinsport, TN (US);
Abstract
Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound to generate a crude carboxylic acid slurry comprising FDCA, removing impurities from a crude carboxylic acid slurry in a liquid displacement zone to form a low impurity slurry stream. The low impurity slurry stream is further treated in a secondary oxidation zone to produce a secondary oxidation slurry stream which is routed to a crystallization zone to form a crystallized slurry stream. The crystallized slurry stream is cooled in a cooling zone and the resulting cooled crystallized slurry stream is routed to a solid-liquid separation zone to generate a purified wet cake stream comprising FDCA that is dried in a drying zone to generate a dry carboxylic acid product stream comprising purified FDCA (pFDCA).