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. 04, 2020
Filed:
Sep. 04, 2017
Applicant:
Casale SA, Lugano, CH;
Inventor:
Luca Rugnone, Como, IT;
Assignee:
Casale SA, , CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 273/04 (2006.01); C07C 273/16 (2006.01); C07C 273/10 (2006.01); C05C 9/00 (2006.01); B01D 3/00 (2006.01); C05C 1/00 (2006.01); C07C 275/02 (2006.01);
U.S. Cl.
CPC ...
C07C 273/04 (2013.01); B01D 3/00 (2013.01); B01D 3/009 (2013.01); C05C 1/00 (2013.01); C05C 9/00 (2013.01); C05C 9/005 (2013.01); C07C 273/10 (2013.01); C07C 273/16 (2013.01); C07C 275/02 (2013.01);
Abstract
Integrated process for the production of urea and urea-ammonium nitrate, comprising: reacting ammonia and carbon dioxide to form a reaction mixture () containing urea and unconverted materials, and also comprising the recovery of unconverted materials in a first recovery stage at a first pressure and in a second recovery stage at a second pressure, wherein ammonia-containing offgas () released by said second recovery stage are condensed at said second pressure, and said condensed offgas () are recycled to said first recovery stage.