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. 13, 1979
Filed:
Apr. 13, 1978
Robert E Froehlich, New Providence, NJ (US);
Reginald A Baldini, South Orange, NJ (US);
Foster Wheeler Energy Corporation, Livingston, NJ (US);
Abstract
A process and process plant for the manufacture of ammonium nitrate using urea process tail gas are provided. Water is reacted with nitrogen dioxide to form nitric acid, which is thereafter reacted with the urea process tail gas to yield an aqueous solution and a tail gas including carbon dioxide, ammonia and water vapor, A carrier gas is added to the tail gas, in order to control the amount of water vapor condensed out of the tail gas upon its being cooled to approximately 60 degrees C. Condensed water vapor is removed and passed to an absorption tower for use in the formation of the nitric acid, while the remainder of the cooled resultant stream is passed to the atmosphere.