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. 24, 2014
Filed:
Jan. 11, 2010
Paolo Casara, San Donato Milanese, IT;
Alessandro Gianazza, Legnano, IT;
Ivano Miracca, Milan, IT;
Saipem S.p.A., San Donato Milanese, IT;
Abstract
A process for the recovery of ammonia contained in a gaseous stream is described, said process comprising the following phases: (a) subjecting the gaseous stream containing ammonia to a washing (S) with an aqueous washing solution () having a pH lower than 7.0, with the formation of a purified gaseous stream () and an aqueous solution () containing an ammonium salt; (b) subjecting the aqueous solution containing the ammonium salt coming from phase (a) to a distillation process (MD) with a hydrophobic microporous membrane at a temperature ranging from 50 to 250° C. and a pressure ranging from 50 KPa to 4 MPa absolute with the formation of a regenerated washing solution () and a gaseous stream () comprising NHand HO; (c) recycling said generated washing solution to phase (a). The equipment for carrying out the above process is also described.