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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.:

US 9139449 B1

PDFFull Text
Date of Patent:
Sep. 22, 2015

Filed:

Feb. 08, 2013

Method for reducing the content of fine material in fgd gypsum

Applicant:

Andritz Ag, Raaba, AT;

Inventors:

Michael Kramer, Graz, AT;

Andreas Gruber-Waltl, Graz, AT;

Assignee:

ANDRITZ AG, Graz, AT;

Attorney:

Brooks Kushman P.C.

Primary Examiner:

Jeffrey Shapiro

Int. Cl.
CPC ...
B04C 5/26 (2006.01); B04C 5/30 (2006.01); C01F 11/46 (2006.01); B01D 45/04 (2006.01); B01D 45/12 (2006.01); B01D 45/00 (2006.01); B04C 5/04 (2006.01); B04C 5/18 (2006.01); C04B 11/26 (2006.01);
U.S. Cl.
CPC ...
C01F 11/468 (2013.01); B01D 45/00 (2013.01); B01D 45/04 (2013.01); B01D 45/12 (2013.01); B04C 5/04 (2013.01); B04C 5/18 (2013.01); B04C 5/26 (2013.01); C04B 11/264 (2013.01);
Abstract

A method for obtaining gypsum using a flue-gas desulfurization system (FGD) having a gypsum suspension, which includes fine materials such as active carbon particles or residual carbonate particles for example, accumulates in the scrubber of a wet flue gas scrubber. The gypsum-containing suspension is thickened by at least one hydrocyclone, and the thickened gypsum suspension is discharged via the underflow of the hydrocyclone. Water is fed to the hydrocyclone in addition to the gypsum suspension via a dedicated feed line such that the content of fine material is thus reduced with respect to the suspension volume in the underflow.

Find Patent Forward Citations

Kramer, Michael. (2015). Method for reducing the content of fine material in fgd gypsum (U.S. Patent No. 9139449). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9139449

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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