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:
-
- Longmeadow, MA
- Issue Date:
- 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
- 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}
}
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