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:
Sep. 15, 2020
Filed:
Sep. 06, 2017
Applicant:
Veolia Water Technologies, Inc., Moon Township, PA (US);
Inventors:
Sebastien Bessenet, Naperville, IL (US);
Didier Le Flammec, Saint Arnoult en Yvelines, FR;
Assignee:
Veolia Water Technologies, Inc., Moon Township, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01D 5/04 (2006.01); C01B 7/07 (2006.01); B01D 9/00 (2006.01);
U.S. Cl.
CPC ...
C01D 5/04 (2013.01); B01D 9/0018 (2013.01); B01D 9/0045 (2013.01); C01B 7/0718 (2013.01);
Abstract
A process is provided for producing potassium sulfate from potassium chloride and sulfuric acid. The process entails mixing potassium chloride with the water to form a potassium chloride slurry which is mixed with recycled sulfuric acid to form a K, Ct', SO″ acid mixture. This mixture is subjected to a crystallization process that produces potassium sulfate crystals and a hydrochloric acid-water vapor. The hydrochloric acid is separated from the hydrochloric acid-water vapor to form a hydrochloric acid solution.