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:
May. 08, 2012
Filed:
Feb. 01, 2007
Applicants:
Kenny Randolph Parker, Afton, TN (US);
Philip Edward Gibson, Kingsport, TN (US);
Inventors:
Kenny Randolph Parker, Afton, TN (US);
Philip Edward Gibson, Kingsport, TN (US);
Assignee:
Grupo Petrotemex, S.A. De C.V., San Pedro Graza Garcia, MX;
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a method and apparatus for drying a wet cake in a carboxylic acid production process. The method comprises employing a contact dryer for drying solid particles of carboxylic acid, where the solid particles can have a residence time of less than about 7 minutes in the dryer and an exit temperature of less than about 250° C. upon exiting the dryer.