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 (United States)

OSTI Identifier:: 865041

Patent Number(s):: 4453494

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

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F22 - STEAM GENERATION F22B - METHODS OF STEAM GENERATION

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR

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F - MECHANICAL ENGINEERING F22 - STEAM GENERATION F22B - METHODS OF STEAM GENERATION
F22B31/0038 - {with tubes in the bed}

F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23C - METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR
F23C2900/99006 - Arrangements for starting combustion
F23C10/18 - Details

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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/

Citation Formats


                    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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