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. 22, 2017
Filed:
Feb. 14, 2012
Meinhard Schwefer, Meschede, DE;
Rolf Siefert, Rheda-Wiedenbrück, DE;
Jürgen Fuchs, Dortmund, DE;
Klaus Ruthardt, Dortmund, DE;
Michael Groves, Gevelsberg, DE;
Meinhard Schwefer, Meschede, DE;
Rolf Siefert, Rheda-Wiedenbrück, DE;
Jürgen Fuchs, Dortmund, DE;
Klaus Ruthardt, Dortmund, DE;
Michael Groves, Gevelsberg, DE;
THYSSENKRUPP UHDE GMBH, Dortmund, DE;
Abstract
The invention relates to a process and apparatus for preparing nitric acid by catalytic oxidation of NHby means of oxygen and subsequent reaction of the NOformed with an absorption medium in an absorption tower, which comprises a catalyst bed for NO decomposition arranged in the process gas downstream of the catalytic NHoxidation and upstream of the absorption tower in the flow direction and a catalyst bed for NOreduction and effecting a further decrease in the amount of NO arranged in the tailgas downstream of the absorption tower in the flow direction,