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:
Oct. 05, 2021
Filed:
Jun. 15, 2018
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Thomas Knauf, Dormagen, DE;
Peter Drinda, Krefeld, DE;
Assignee:
Covestro Deutschland AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 19/24 (2006.01); B01J 19/00 (2006.01); C07C 201/08 (2006.01); C07C 201/16 (2006.01); B01J 19/18 (2006.01);
U.S. Cl.
CPC ...
C07C 201/08 (2013.01); B01J 19/002 (2013.01); B01J 19/0006 (2013.01); B01J 19/1881 (2013.01); B01J 19/24 (2013.01); B01J 19/2465 (2013.01); C07C 201/16 (2013.01); B01J 2219/0004 (2013.01); B01J 2219/00006 (2013.01); B01J 2219/00268 (2013.01);
Abstract
The present invention relates to a process for the continuous production of nitrobenzene by the nitration of benzene with nitric acid and sulphuric acid under adiabatic conditions, not the entire production plant being shut down during a production stop, but the production plant being entirely or at least partly operated in recirculation mode. The invention further relates to a plant for producing nitrobenzene and to a method for operating a plant for producing nitrobenzene.