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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 9700839 B1

PDFFull Text
Date of Patent:
Jul. 11, 2017

Filed:

Nov. 18, 2013

Air pollution control system and air pollution control method

Applicant:

Mitsubishi Hitachi Power Systems, Ltd., Yokohama-shi, Kanagawa, JP;

Inventors:

Toshihiro Fukuda, Tokyo, JP;

Seiji Kagawa, Tokyo, JP;

Jun Satou, Tokyo, JP;

Susumu Okino, Tokyo, JP;

Assignee:

MITSUBISHI HITACHI POWER SYSTEMS, LTD., Kanagawa, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Timothy Vanoy

Int. Cl.
CPC ...
B01D 53/50 (2006.01); B01D 53/78 (2006.01); B01D 53/79 (2006.01); B01D 1/18 (2006.01); B01D 53/75 (2006.01); F26B 3/12 (2006.01); F23J 15/00 (2006.01); F23J 15/04 (2006.01); F23L 11/00 (2006.01); F23L 15/04 (2006.01); B01D 53/86 (2006.01);
U.S. Cl.
CPC ...
B01D 53/504 (2013.01); B01D 1/18 (2013.01); B01D 53/505 (2013.01); B01D 53/75 (2013.01); B01D 53/78 (2013.01); F23J 15/003 (2013.01); F23J 15/04 (2013.01); F23L 11/00 (2013.01); F23L 15/04 (2013.01); F26B 3/12 (2013.01); B01D 53/8625 (2013.01); B01D 2251/2062 (2013.01); B01D 2251/2067 (2013.01); B01D 2251/404 (2013.01); B01D 2257/602 (2013.01); B01D 2258/0283 (2013.01); B01D 2259/65 (2013.01); F23J 2215/10 (2013.01); F23J 2215/20 (2013.01); F23J 2219/40 (2013.01); Y02E 20/348 (2013.01); Y02P 70/34 (2015.11); Y02P 70/40 (2015.11);
Abstract

Provided is an air pollution control system including: a denitration apparatus; an air heater; a precipitator; a desulfurization apparatus; a dehydrator; a spray drying apparatus provided with a spray unit that is configured to spray dehydrated filtrate as desulfurization wastewater supplied from the dehydrator; a flue gas introduction line through which a branch gas branched from the flue gas is introduced to the spray drying apparatus; a flue gas supply line through which flue gas returns to a main flue gas duct, the flue gas being obtained after the dehydrated filtrate is dried by the spray drying apparatus; and a powder supply apparatus that is configured to supply a powder to the flue gas introduction line.

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