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. 08, 2019
Filed:
Jan. 07, 2015
Applicant:
Mitsubishi Hitachi Power Systems, Ltd., Yokohama-shi, Kanagawa, JP;
Inventors:
Assignee:
MITSUBISHI HITACHI POWER SYSTEMS, LTD., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/14 (2006.01); B01D 53/62 (2006.01); C01B 32/50 (2017.01); B01D 53/00 (2006.01); C07C 209/38 (2006.01);
U.S. Cl.
CPC ...
B01D 53/1418 (2013.01); B01D 53/005 (2013.01); B01D 53/145 (2013.01); B01D 53/1425 (2013.01); B01D 53/62 (2013.01); C01B 32/50 (2017.08); C07C 209/38 (2013.01); B01D 53/1475 (2013.01); B01D 2251/50 (2013.01); B01D 2251/502 (2013.01); B01D 2251/604 (2013.01); B01D 2252/204 (2013.01); B01D 2258/0283 (2013.01); Y02C 10/06 (2013.01);
Abstract
A method for decomposing a nitroso compound, comprising: adding an aqueous solution containing hydrogen halide to a liquid to be treated that contains the nitroso compound in such a manner that the hydrogen halide is present in an amount of 2 mol or more and 20 mol or less per mol of a nitroso group in the nitroso compound; and subsequently heating the resulting liquid to be treated at a temperature of not lower that 75° C. and not higher than a boiling point of water under ordinary pressure, thereby an amines are recovered.