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, 2016
Filed:
Sep. 13, 2012
Applicants:
Pankaj Singh Gautam, Evansville, IN (US);
Vinod S. Nair, Bangalore, IN;
Inventors:
Pankaj Singh Gautam, Evansville, IN (US);
Vinod S. Nair, Bangalore, IN;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01D 7/12 (2006.01); B01D 53/96 (2006.01); C01D 7/26 (2006.01); B01D 53/62 (2006.01);
U.S. Cl.
CPC ...
B01D 53/96 (2013.01); B01D 53/62 (2013.01); C01D 7/26 (2013.01); B01D 2251/304 (2013.01); B01D 2251/606 (2013.01);
Abstract
A method to recover caustic from a caustic waste stream comprises reducing the temperature of a caustic waste stream comprising dissolved NaCOto a temperature less than or equal to the temperature at which the NaCOprecipitates from the caustic waste stream to form a caustic waste stream comprising precipitated NaCOand separating the precipitated NaCO.