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.

Date of Patent:
Jun. 18, 2019

Filed:

Sep. 15, 2015
Applicant:

Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;

Inventors:

Manabu Oda, Tokyo, JP;

Kiyonori Kushioka, Tokyo, JP;

Shimpei Todaka, Tokyo, JP;

Masashi Kiyosawa, Kanagawa, JP;

Hideo Miyanishi, Kanagawa, JP;

Hiroshi Kako, Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23J 3/04 (2006.01); B01D 45/04 (2006.01); F23J 15/02 (2006.01); F23M 5/00 (2006.01); B01D 45/08 (2006.01);
U.S. Cl.
CPC ...
F23J 3/04 (2013.01); B01D 45/04 (2013.01); F23J 15/022 (2013.01); F23M 5/00 (2013.01); B01D 45/08 (2013.01); F23J 2217/20 (2013.01); F23J 2217/30 (2013.01);
Abstract

In an exhaust duct and a boiler, there are provided: a flue gas duct through which flue gases pass; a first hopper provided to the flue gas duct, the first hopper collecting PA in the flue gases; a low-repulsion section provided to the upstream side or the downstream side of the first hopper in the direction of flow of the flue gases, the low-repulsion section having a lower coefficient of repulsion than the inner wall surface of the flue gas duct; and a popcorn-ash-trapping section for trapping PA in the flue gases, the popcorn-ash-trapping section provided to the downstream side of the first hopper and the low-repulsion section in the direction of flow of the flue gases, whereby it is possible for solid particles in the flue gases to be properly trapped.


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