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:
Oct. 08, 2019
Filed:
Feb. 25, 2014
Applicant:
Saipem S.p.a., San Donato Milanese, IT;
Inventors:
Lino Carlessi, Dalmine, IT;
Lorenzo Bruno, San Donato Milanese, IT;
Rosario Galati, Pogliano Milanese, IT;
Assignee:
Saipem S.p.A., San Donato Milanese, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/58 (2006.01); B01D 53/86 (2006.01); C07C 273/04 (2006.01); B01D 53/90 (2006.01);
U.S. Cl.
CPC ...
B01D 53/58 (2013.01); B01D 53/8634 (2013.01); B01D 53/90 (2013.01); C07C 273/04 (2013.01); B01D 2251/102 (2013.01); B01D 2251/11 (2013.01); B01D 2251/20 (2013.01); B01D 2257/406 (2013.01); Y02A 50/2346 (2018.01);
Abstract
A method of removing ammonia from a continuous vent gas stream of a urea plant, in particular of a medium-pressure section of a urea plant, includes a step of removing ammonia from the continuous vent gas stream of the urea plant using a controlled-combustion process including at least a first lean, oxygen-poor combustion step performed in the presence of an understoichiometric amount of oxygen acting as the sole comburent, and in a reducing atmosphere of hydrogen.