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. 07, 2017
Filed:
Feb. 05, 2014
Applicant:
Green Granulation Technology Limited, Hong Kong, CN;
Inventors:
Wei Wang, Beijing, CN;
Mengguang Wang, Newark, DE (US);
Assignee:
Green Granulation Technology Limited, Hong Kong, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 47/06 (2006.01);
U.S. Cl.
CPC ...
B01D 47/06 (2013.01);
Abstract
A method for manufacturing granules of, e.g., urea or ammonium nitrate, wherein the ejection of submicron dust to the atmosphere is reduced is described. The method contains an arrangement of three scrubbers wherein the gas withdrawn from the granulator is provided to a first scrubber, resulting in the formation of a first purified gas stream, which is provided to a third scrubber, with the operating temperature of the third scrubber being below than of the first scrubber. In preferred embodiments, the process comprises various recycle streams.