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:
Mar. 12, 2024
Filed:
Feb. 19, 2019
Applicant:
Casale SA, Lugano, CH;
Inventors:
Assignee:
CASALE SA, Lugano, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/34 (2006.01); B01D 53/14 (2006.01); B01D 53/86 (2006.01); C01B 21/26 (2006.01); B01D 53/56 (2006.01);
U.S. Cl.
CPC ...
B01D 53/8628 (2013.01); B01D 53/14 (2013.01); B01D 53/343 (2013.01); B01D 53/869 (2013.01); C01B 21/265 (2013.01); B01D 53/565 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/50 (2013.01); B01D 2259/65 (2013.01);
Abstract
Process for reducing the content of NOx and N2O from an input tail gas of a nitric acid process, said input tail gas having a temperature lower than 400° C., the process comprising an abatement stage at least including a deN2O stage and deNOx stage and providing a conditioned tail gas having a temperature greater than the input tail gas, wherein, prior to submission to said abatement stage, said input tail gas is pre-heated to a temperature of at least 400° C. by indirect heat exchange with at least a portion of said conditioned gas.