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:
Nov. 09, 2021
Filed:
Jun. 27, 2017
Casale SA, Lugano, CH;
Raffaele Ostuni, Lugano, CH;
Jean François Granger, Lugano, CH;
Giada Franceschin, Como, IT;
Pierdomenico Biasi, Como, IT;
CASALE SA, Lugano, CH;
Abstract
Integrated process for the synthesis of ammonia and nitric acid, comprising a synthesis of nitric acid including the following steps: a) subjecting a stream of ammonia () to catalytic oxidation, obtaining a gaseous stream containing nitrogen oxides (); b) subjecting said gaseous stream to a process of absorption of nitrogen oxides, providing nitric acid () and a tail gas () containing nitrogen and residual nitrogen oxides; c) subjecting at least a portion of said first tail gas () to a process of removal of nitrogen oxides, providing a nitrogen oxides-depleted tail gas (), and comprising a synthesis of ammonia by catalytic conversion of a make-up gas () comprising hydrogen and nitrogen in an ammonia synthesis loop, wherein at least a portion () of said second tail gas is used as nitrogen source for obtaining said make-up gas ().