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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 10704835 B1

PDFFull Text
Date of Patent:
Jul. 07, 2020

Filed:

Jun. 27, 2018

Method of spray drying and washing and method of controlling air pollution

Applicant:

Mitsubishi Heavy Industries, Ltd., Tokyo, JP;

Inventors:

Toshihiro Fukuda, Tokyo, JP;

Seiji Kagawa, Tokyo, JP;

Jun Satou, Tokyo, JP;

Assignee:

MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Matthew D Krcha

Int. Cl.
CPC ...
F26B 25/00 (2006.01); B01D 1/18 (2006.01); B01D 53/50 (2006.01); B01D 53/34 (2006.01); F23J 15/00 (2006.01); F23J 15/02 (2006.01); C02F 103/18 (2006.01); B01D 53/64 (2006.01); B01D 53/75 (2006.01); B01D 53/86 (2006.01);
U.S. Cl.
CPC ...
F26B 25/009 (2013.01); B01D 1/18 (2013.01); B01D 53/343 (2013.01); B01D 53/504 (2013.01); B01D 53/505 (2013.01); F23J 15/006 (2013.01); F23J 15/022 (2013.01); B01D 53/64 (2013.01); B01D 53/75 (2013.01); B01D 53/8625 (2013.01); B01D 2251/2062 (2013.01); B01D 2251/2067 (2013.01); B01D 2251/404 (2013.01); B01D 2251/604 (2013.01); B01D 2257/2045 (2013.01); B01D 2257/302 (2013.01); B01D 2257/404 (2013.01); B01D 2257/602 (2013.01); B01D 2258/0283 (2013.01); C02F 2103/18 (2013.01);
Abstract

A method of spray drying and washing using a spray drying apparatus, includes: spraying dehydrated filtrate from a spray nozzle hung down from a top side of the spray drying apparatus; introducing a part of flue gas into the spray drying apparatus to dry the dehydrated filtrate; wherein a compressed air is introduced into the spray nozzle to facilitate the spraying and into the wash nozzle to perform air purging during the spray drying, and jetting washing liquid from a wash nozzle provided on a side wall of the spray drying apparatus to wash the spray nozzle and an inside of the spray drying apparatus body, wherein the feeding of the dehydrated filtrate to the spray nozzle is stopped during the washing.

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