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. 25, 2015
Filed:
Apr. 12, 2012
Applicants:
Sandeep Vasant Chavan, Mumbai, IN;
Kini Harshad Ravindra, Mumbai, IN;
Inventors:
Sandeep Vasant Chavan, Mumbai, IN;
Kini Harshad Ravindra, Mumbai, IN;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 17/22 (2006.01); C01B 17/36 (2006.01); B09B 3/00 (2006.01); C10G 29/04 (2006.01); C10G 53/08 (2006.01); C10G 21/14 (2006.01);
U.S. Cl.
CPC ...
C01B 17/36 (2013.01); B09B 3/0016 (2013.01); C01B 17/22 (2013.01); C10G 21/14 (2013.01); C10G 29/04 (2013.01); C10G 53/08 (2013.01); C10G 2300/1077 (2013.01); C10G 2300/202 (2013.01);
Abstract
The present disclosure provides a method for isolation and purification of sodium sulfide (NaS) formed during desulfurization of petroleum residue. The process involves treating a sludge containing NaS obtained during desulfurization of petroleum residue with a mixture of at least one organic solvent and water.