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. 18, 2013
Filed:
Nov. 06, 2009
Applicants:
Paul Niehues, Dortmund, DE;
Harald Franzrahe, Dortmund, DE;
Matthias Potthoff, Dortmund, DE;
Roland Monstrey, Assenede, BE;
Inventors:
Paul Niehues, Dortmund, DE;
Harald Franzrahe, Dortmund, DE;
Matthias Potthoff, Dortmund, DE;
Roland Monstrey, Assenede, BE;
Assignee:
UHDE Fertilizer Technology B.V., Roermond, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/58 (2006.01); B01J 19/00 (2006.01); C07C 273/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A urea granulation process and the apparatus suitable for operating that process integrates a method for reducing ammonia emissions from a urea granulation plant which is emitted by a urea production process by scrubbing the off-gas and recovering the scrubber bleed and integrating it into the granulation process so that ammonium salts are completely contained by the process.