Fluidized bed boiler having a segmented grate

Title: Fluidized bed boiler having a segmented grate

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Abstract

A fluidized bed furnace (10) is provided having a perforate grate (9) within a housing which supports a bed of particulate material including some combustibles. The grate is divided into a plurality of segments (E2-E6, SH1-SH5, RH1-RH5), with the airflow to each segment being independently controlled. Some of the segments have evaporating surface imbedded in the particulate material above them, while other segments are below superheater surface or reheater surface. Some of the segments (E1, E7) have no surface above them, and there are ignitor combustors (32, 34) directed to fire into the segments, for fast startup of the furnace without causing damage to any heating surface.

Inventors:

Waryasz, Richard E. ^[1]

(Longmeadow, MA)

Issue Date:: 1984-01-01

Research Org.:: Combustion Engineering, Inc., Windsor, CT (USA)

OSTI Identifier:: 865041

Patent Number(s):: 4453494

Assignee:: Combustion Engineering, Inc. (Windsor, CT) OSTI

DOE Contract Number:: EX-76-C-01-2473

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: fluidized; bed; boiler; segmented; grate; furnace; 10; provided; perforate; housing; supports; particulate; material; including; combustibles; divided; plurality; segments; e2-e6; sh1-sh5; rh1-rh5; airflow; segment; independently; controlled; evaporating; surface; imbedded; below; superheater; reheater; e1; e7; ignitor; combustors; 32; 34; directed; fire; fast; startup; causing; damage; heating; particulate material; fluidized bed; material including; bed boiler; bed furnace; independently controlled; /122/110/

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                    Waryasz, Richard E. Fluidized bed boiler having a segmented grate.  United States: N. p., 1984. 
        Web.

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                    Waryasz, Richard E. Fluidized bed boiler having a segmented grate.  United States.

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                    Waryasz, Richard E. Sun .  
        "Fluidized bed boiler having a segmented grate".  United States.  https://www.osti.gov/servlets/purl/865041.

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@article{osti_865041,

  title        = {Fluidized bed boiler having a segmented grate},

  author       = {Waryasz, Richard E.},

  abstractNote = {A fluidized bed furnace (10) is provided having a perforate grate (9) within a housing which supports a bed of particulate material including some combustibles. The grate is divided into a plurality of segments (E2-E6, SH1-SH5, RH1-RH5), with the airflow to each segment being independently controlled. Some of the segments have evaporating surface imbedded in the particulate material above them, while other segments are below superheater surface or reheater surface. Some of the segments (E1, E7) have no surface above them, and there are ignitor combustors (32, 34) directed to fire into the segments, for fast startup of the furnace without causing damage to any heating surface.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1984},

  month        = {1}

}

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