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.:
Date of Patent:
May. 16, 1989
Filed:
Sep. 08, 1988
Toshiki Motai, Tokyo, JP;
Masamichi Kashiwazaki, Tokyo, JP;
Mitsubishi Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An exhaust boiler includes a high-pressure superheater, a high-pressure steam generator, a high-pressure economizer, a low-pressure steam generator and a low-pressure economizer disposed sequentially from an upstream side within an exhaust gas flow passageway, and a denitrification apparatus is disposed upstream of the high-pressure economizer. Such boiler is improved so as to achieve maximum heat recovery regardless of whether or not sulfur oxides are contained in the exhaust gas. A bypass duct is connected to the exhaust gas passageway at a position downstream of the high-pressure economizer and upstream of the low-pressure steam generator, and dampers are disposed respectively within the bypass duct and at a position within the exhaust gas passageway downstream of the connecting point of the bypass duct and upstream of the low-pressure steam generator.