EXHAUST HEAT RECOVERY BOILER

WIPO Patent Application WO/2020/031774

A1

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.

JPH05240405	METHOD OF INSTALLING BOILER
JPS58219302	TRANSMISSION GEAR FOR LOAD

MORIKAWA SHOJI (JP)
KAZAMA KENICHI (JP)
IFUKU MASAHIRO (JP)
IZUTA KOZO (JP)
ISHIKAWA MASAYUKI (JP)

PCT/JP2019/029663

February 13, 2020

July 29, 2019

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MITSUBISHI HITACHI POWER SYS (JP)

F22B37/24; F22B1/18

JPS63183302A	1988-07-28
JP2002168403A	2002-06-14

THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)

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