Low emission U-fired boiler combustion system

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:872985

Ake, Terence ^[1]; Beittel, Roderick ^[2]; Lisauskas, Robert A ^[3]; Reicker, Eric ^[4]

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1. North Brookfield, MA
2. Worcester, MA
3. Shrewsbury, MA
4. Barre, MA

At least one main combustion chamber contains at least one pulverized coal burner. Each pulverized coal burner is operatively arranged for minimizing NO.sub.X production and for maintaining a predetermined operating temperature to liquefy ash within the combustion chamber. The combustion chamber includes a slag drain for removing slag from the combustion chamber. A slag screen is positioned in a generally U-shaped furnace flow pattern. The slag screen is positioned between the combustion chamber and a radiant furnace. The radiant furnace includes a reburning zone for in-furnace No.sub.X reduction. The reburning zone extends between a reburning fuel injection source and at least one overfire air injection port for injecting air.

• Research Organization: RILEY STOKER CORP
• DOE Contract Number: AC22-92PC92158
• Assignee: D. B. Riley, Inc. (Worcester, MA)
• Patent Number(s): US 6058855
• OSTI ID: 872985
• Country of Publication: United States
• Language: English

Related Subjects

emission
u-fired
boiler
combustion
main
chamber
contains
pulverized
coal
burner
operatively
arranged
minimizing
production
maintaining
predetermined
operating
temperature
liquefy
ash
slag
drain
removing
screen
positioned
u-shaped
furnace
flow
pattern
radiant
reburning
zone
in-furnace
reduction
extends
fuel
injection
source
overfire
air
injecting
chamber contains
burning zone
pulverized coal
combustion chamber
operating temperature
fuel injection
main combustion
coal burner
flow pattern
injecting air
air injection
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