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:
Mar. 03, 2026
Filed:
Sep. 06, 2024
Applicant:
Stamicarbon B.v., Sittard, NL;
Inventors:
Assignee:
Stamicarbon B.V., Sittard, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L 1/22 (2006.01); B01J 3/04 (2006.01); C07C 273/04 (2006.01);
U.S. Cl.
CPC ...
C10L 1/22 (2013.01); B01J 3/04 (2013.01); C07C 273/04 (2013.01); C10L 2200/0446 (2013.01); C10L 2290/56 (2013.01);
Abstract
Disclosed is a process for the production of an aqueous urea solution suitable for use as a Diesel Exhaust Fluid (DEF), wherein a condensate of off-gas obtained from further purifying an aqueous urea stream in a treatment section adapted to produce DEF, is sent to an LP dissociation section, thereby the removal of ammonia therefrom. This enables water obtained from such condensate to be recirculated to the DEF purification section, and prevents an unwanted build-up of water in recirculation to urea synthesis.