Pressure fluidized bed firing boiler
AssigneeMitsubishi Jukogyo Kabushiki Kaisha
InventorsTomomitsu Yokoyama, Katsuji Hamasaki, Koichiro Otsubo
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Abstract
A support structure supports a fluidized bed firing boiler disposed within a cylindrical pressure vessel and operated while the inside of a fluidized bed furnace is kept pressurized. A main body of the pressure fluidized bed firing boiler disposed within the pressure vessel is divided into a suspended section suspended from a support beam disposed at an upper interior portion within the pressure vessel, and a bottom-supported section supported by a support beam disposed at a lower interior portion of the pressure vessel. Also, a metallic expansion joint in the form of an undulated plate is provided at a point of engagement between the suspended section and the bottom-supported section.
Claims3
The combination of a cylindrical pressure vessel, a pressure fluidized bed firing boiler disposed within said pressure vessel, and support structure supporting said boiler in the pressure vessel,
- said boiler having a main body including a suspended section and a bottom-supported section, and
- said support structure including a support beam disposed at an upper interior portion of said pressure vessel and from which the suspended section of the main body of said boiler is suspended, a support beam disposed at a lower interior portion of said pressure vessel and supporting the bottom-supported section of the main body of said boiler at the bottom thereof, an expansion joint structurally interposed between said suspended section and the bottom-supported section of said pressure vessel so as to accommodate for differences in thermal expansion of said sections, the expansion joint comprising a metal plate having a plurality of undulations, and refractory heat-insulative material interposed between said metallic plate and the bottom-supported section of the main body of said boiler.
Dependencies are inferred from the claim text.