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:
Nov. 15, 2016
Filed:
Feb. 12, 2010
Johanna Eliasson, Lund, SE;
Ylva Eriksson, Lund, SE;
David Holmström, Lund, SE;
P. Christian Hulteberg, Malmö, SE;
Hans T. Karlsson, Lund, SE;
Filip Nilsson, Lund, SE;
Frida Ojala, Lund, SE;
Johan Albert Arno Van Den Tillaart, Mèlick, NL;
Johanna Eliasson, Lund, SE;
Ylva Eriksson, Lund, SE;
David Holmström, Lund, SE;
P. Christian Hulteberg, Malmö, SE;
Hans T. Karlsson, Lund, SE;
Filip Nilsson, Lund, SE;
Frida Ojala, Lund, SE;
Johan Albert Arno Van Den Tillaart, Mèlick, NL;
STAMICARBON B.V., Sittard, NL;
Abstract
Disclosed is a method for the removal of ammonia from the off-gas of a finishing section of a urea production plant. The method comprises contacting the off-gas with a solid adsorbent capable of physically adsorbing ammonia, particularly activated carbon or zeolite. Thereupon the solid adsorbent having ammonia adsorbed thereon is separated from the gas and regenerated by dissolving ammonia in an extraction liquid, preferably water. After separating the water from the solid adsorbent, the latter is re-used in the process.