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:
May. 24, 2016
Filed:
Jan. 30, 2013
Applicant:
Jozef Hubert Meessen, Wijlre, NL;
Inventor:
Jozef Hubert Meessen, Wijlre, NL;
Assignee:
STAMICARBON B.V., Sittard, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 273/02 (2006.01); C07C 273/16 (2006.01); B01D 53/92 (2006.01); B01D 53/79 (2006.01); B01D 53/90 (2006.01);
U.S. Cl.
CPC ...
B01D 53/92 (2013.01); B01D 53/79 (2013.01); B01D 53/90 (2013.01); C07C 273/16 (2013.01); Y02C 20/10 (2013.01);
Abstract
The invention relates to process for the preparation of a urea-comprising aqueous stream, that is suitable for use in a unit for the reduction of NOx in combustion engine exhaust gases, wherein the urea-comprising aqueous stream is separated directly from or after a recovery section in a urea production process and is thereafter diluted with water until the urea-comprising stream comprises 30-35 wt % urea.