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Patent Searching and Data


Title:
EXHAUST HEAT RECOVERY BOILER
Document Type and Number:
WIPO Patent Application WO/2020/031774
Kind Code:
A1
Abstract:
Provided is an exhaust heat recovery boiler in which any level variation on the inner surface side of a casing is eliminated so that the inner surface can be flattened. The exhaust heat recovery boiler is provided with: a casing (2) into which an exhaust gas (1) from a gas turbine is guided; a heat insulating material (13) that covers the inner surface side of the casing (2); and a heat exchanger that is disposed inside the casing, wherein the casing (2) is divided into a plurality of blocks along the flow direction of the exhaust gas (1). The blocks each have, at both ends thereof, a wall surface structure surrounded by two steel grooves (10). Webs of the steel grooves (10) provided to the adjacent blocks are connected such that respective inner flanges thereof are continuous with each other so as to form steps. Further, the heat insulating material (13) the thickness dimension of which stepwisely varies is disposed in gaps generated by the steps. Accordingly, the inner surface side of the heat insulating material (13) opposed to the heat exchanger in the casing (2) is formed to be flat.

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Inventors:
MORIKAWA SHOJI (JP)
KAZAMA KENICHI (JP)
IFUKU MASAHIRO (JP)
IZUTA KOZO (JP)
ISHIKAWA MASAYUKI (JP)
Application Number:
JP2019/029663
Publication Date:
February 13, 2020
Filing Date:
July 29, 2019
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F22B37/24; F22B1/18
Foreign References:
JPS63183302A1988-07-28
JP2002168403A2002-06-14
Attorney, Agent or Firm:
THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)
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