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. 11, 2026
Filed:
Jan. 05, 2022
Basf SE, Ludwigshafen am Rhein, DE;
Andreas Wölfert, Ludwigshafen am Rhein, DE;
Michael Lorenz, Ludwigshafen am Rhein, DE;
Gerrit Waters, Ludwigshafen am Rhein, DE;
Marcus Reble, Ludwigshafen am Rhein, DE;
Holger Friedrich, Ludwigshafen am Rhein, DE;
Andreas Weickgenannt, Ludwigshafen am Rhein, DE;
Wolfgang Gmeiner, Ludwigshafen am Rhein, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
The invention relates on a process for working-up a nitrous oxide comprising off-gas stream from a production process of adipic acid by decomposing the nitrous oxide contained in the off-gas stream into nitrogen and oxygen in a fixed bed reactor () of a NO decomposition unit () at a temperature in the range from 430 to 800° C. to obtain a purified gas, wherein for controlling the NO decomposition unit () a nonlinear model predictive control is used which is based on a reactor model of the fixed bed reactor based on equations of energy transport and species transport for nitrogen, oxygen and NO.