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:
Sep. 22, 2015
Filed:
Jan. 28, 2013
Applicant:
Bayer Intellectual Property Gmbh, Monheim, DE;
Inventors:
Bernd Pennemann, Bergisch Gladbach, DE;
Juergen Munnig, Kaarst, DE;
Wulf Dietrich, Cologne, DE;
Andreas Karl Rausch, Kaarst, DE;
Assignee:
Bayer Intellectual Property GmbH, Monheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 201/08 (2006.01); C07C 205/06 (2006.01); C01B 17/94 (2006.01); C01B 17/88 (2006.01);
U.S. Cl.
CPC ...
C07C 201/08 (2013.01); C01B 17/88 (2013.01); C01B 17/94 (2013.01); C07C 205/06 (2013.01);
Abstract
The present invention relates to a process and a plant for the production, in particular the continuous production, of nitrobenzene by means of adiabatic nitration of benzene with nitric acid in the presence of sulfuric acid, in which, following the nitration, a multi-stage concentration of the sulfuric acid is carried out by means of heating at a pressure that is reduced as compared with ambient pressure, and wherein the heating takes place using the heat generated in the adiabatic nitration of benzene.