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Title: Fluidized bed boiler having a segmented grate

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:
 [1]
  1. (Longmeadow, MA)
Issue Date:
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/

Citation Formats

Waryasz, Richard E. Fluidized bed boiler having a segmented grate. United States: N. p., 1984. Web.
Waryasz, Richard E. Fluidized bed boiler having a segmented grate. United States.
Waryasz, Richard E. Sun . "Fluidized bed boiler having a segmented grate". United States. https://www.osti.gov/servlets/purl/865041.
@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}
}

Patent:

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