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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 11439947 B1

PDFFull Text
Date of Patent:
Sep. 13, 2022

Filed:

Aug. 28, 2020

System and method for mixing recirculating combustion ash with hydrated lime and water

Applicant:

Andritz Aktiebolag, Ornskoldsvik, SE;

Inventors:

Nabil Rafidi, Vaxjo, SE;

Ali Mustapha Tabikh, Vaxjo, SE;

Robert Rahlin, Vaxjo, SE;

Wuyin Wang, S Sandby, SE;

Bjorn Sture Rikard Hakansson, Vaxjo, SE;

Assignee:

ANDRITZ AKTIEBOLAG, Ornskoldsvik, SE;

Attorney:

Grogan, Tucillo & Vanderleeden, LLP

Primary Examiner:

Timothy C Vanoy

Int. Cl.
CPC ...
B01D 53/14 (2006.01); B01D 53/50 (2006.01); B01D 53/18 (2006.01); B01D 53/80 (2006.01); B01F 7/00 (2006.01); B01F 7/16 (2006.01); B01F 7/18 (2006.01); B01F 15/00 (2006.01); B01F 13/02 (2006.01); F23J 15/04 (2006.01); B01F 27/1125 (2022.01); B01F 33/40 (2022.01); B01F 27/191 (2022.01); B01F 27/85 (2022.01); B01F 27/84 (2022.01); B01F 27/90 (2022.01); B01F 35/00 (2022.01);
U.S. Cl.
CPC ...
B01D 53/1481 (2013.01); B01D 53/18 (2013.01); B01D 53/502 (2013.01); B01D 53/80 (2013.01); B01F 27/1125 (2022.01); B01F 27/191 (2022.01); B01F 27/84 (2022.01); B01F 27/85 (2022.01); B01F 27/90 (2022.01); B01F 33/406 (2022.01); B01F 35/55 (2022.01); F23J 15/04 (2013.01); B01D 2251/404 (2013.01); B01D 2257/30 (2013.01); F23J 2700/001 (2013.01); F23J 2900/01005 (2013.01);
Abstract

A mixer for recirculating ash from solid fuel combustion with hydrated lime and water and to feed the mixture into a desulfurization reactor. The mixer includes a housing having a front wall, two outer vertical sidewalls, a rear wall, a top, and a bottom, the top includes a feed chute configured for the entry and addition of product to the mixer, and the front wall includes an opening for the mixture of product to exit. The mixer also includes a rotatable vertical shaft having an impeller, the impeller having a plurality of blades disposed on the vertical shaft in the same horizontal plane and distributed equidistantly about the circumference of the vertical shaft. The mixer also includes a vertical wall disposed within the housing forming a mixing region and a feeding region that is operably connected to the opening of the front wall.

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