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:
Jan. 27, 2015
Filed:
Apr. 12, 2012
Nicole Schodel, Munich, DE;
Hans-jorg Zander, Munich, DE;
Florian Winkler, Munich, DE;
Roland Ritter, Dresden, DE;
Nicole Schodel, Munich, DE;
Hans-Jorg Zander, Munich, DE;
Florian Winkler, Munich, DE;
Roland Ritter, Dresden, DE;
Linde Aktiengesellschaft, Munich, DE;
Abstract
The invention relates to a process for the removal of NO and NOfrom an oxygen-containing gas stream, which comprises a scrubbing step in which the gas stream is brought into contact with an ammonia-containing scrubbing solution, NO is oxidized to form NOby means of the oxygen present at a pressure of at least 2 bar and temperatures of from 15° C. to 60° C. and at least part of the NOpresent in the gas stream is converted by means of the ammonia-containing scrubbing solution into ammonium nitrite and a downstream decomposition step in which the ammonium nitrite present in the scrubbing solution is thermally decomposed into elemental nitrogen and water, where the decomposition step is carried out at temperatures of from 121° C. to 190° C. and a pressure of from 2 to 40 bar. The invention likewise relates to a plant for operation of the process of the invention.