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:
Aug. 30, 1977
Filed:
Mar. 10, 1976
Applicant:
Inventor:
Richard Ross Hertzog, Morristown, NJ (US);
Assignee:
Allied Chemical Corporation, Morris Township, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423385 ;
Abstract
Ammonium nitrite is commercially produced by contacting a gaseous stream containing nitric oxide, nitrogen dioxide and oxygen with an aqueous solution containing a basically reacting ammonium compound in an absorption system. However, at normal production rates, serious problems have been encountered because of the emission of unreacted nitric oxide which causes pollution of the atmosphere. It has now been found that by adding controlled supplemental quantities of nitrogen dioxide to the absorption system, nitrogen oxide emission is substantially reduced.