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:
Jun. 14, 2011
Filed:
Mar. 18, 2008
Applicants:
Robert Lin, Kingsport, TN (US);
Marcel DE Vreede, Barendrecht, NL;
Inventors:
Robert Lin, Kingsport, TN (US);
Marcel de Vreede, Barendrecht, NL;
Assignee:
Grupo Petrotemex, S.A. de C.V., San Pedro Garza Garcia, MX;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 8/04 (2006.01); B01J 10/00 (2006.01); B01J 8/00 (2006.01); B01J 19/30 (2006.01); C01B 3/50 (2006.01); C07C 51/255 (2006.01); C07C 51/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is an optimized process and apparatus for more efficiently producing aromatic dicarboxylic acids (e.g., terephthalic acid). In one embodiment the process/apparatus reduces costs by recovering and purifying residual terephthalic acid present in the liquid phase of an initial oxidation slurry. In another embodiment the process apparatus reduces costs associated with hydrogenation by forming a final composite product containing unhydrogenated acid particles.