Fluidized bed boiler having a segmented grate

Patent · Sun Jan 01 00:00:00 EST 1984

OSTI ID:865041

Waryasz, Richard E ^[1]

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1. Longmeadow, MA

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.

• Research Organization: Combustion Engineering, Inc., Windsor, CT (United States)
• DOE Contract Number: EX-76-C-01-2473
• Assignee: Combustion Engineering, Inc. (Windsor, CT)
• Patent Number(s): US 4453494
• OSTI ID: 865041
• Country of Publication: United States
• Language: English

Related Subjects

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
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