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:
Feb. 23, 2021
Filed:
Feb. 01, 2018
Applicant:
Casale SA, Lugano, CH;
Inventor:
Luca Rugnone, Como, IT;
Assignee:
Casale SA, Lugano, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/14 (2006.01); C01C 1/12 (2006.01); C01C 1/26 (2006.01);
U.S. Cl.
CPC ...
C01C 1/12 (2013.01); B01D 53/1493 (2013.01); C01C 1/26 (2013.01); B01D 2252/103 (2013.01);
Abstract
A process and system for removing ammonia from ammonia-containing purge gas of a urea plant, the process comprising: contacting said ammonia-containing purge gas with carbon dioxide at a low temperature, reaction of ammonia to form crystals of ammonium salts in a multiphase stream, and removal of the solid ammonium salts from the multiphase stream.