Download 3. System Configurations

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4. Applications
b) Hot blast stove (blast furnace facility)
The hot blast stove is a facility used to heat the air used in a blast furnace to provide the hightemperature hot air blast.
The air is heated by combustion of the gas generated from the coke ovens. The O2 analyzer is
used to control or monitor this combustion.
Sample point
System type
Detector
Objective
Duct
L2, L3
(If pressure is high,
a pressure compensated
detector is selected.)
D1
Combustion monitoring
O2 control
T0404.EPS
Purifie
d Gas
Bleede
r Tube
Dust
Precipitator
Furnace Top Pressure
Recovery Unit
Blast
Furnace
Hot Blast Stove Waste
Heat Recovery
C-
ga
Hot blast stove
Temperature: 20 to 350°C
Pressure: 3.5 to 10 kPa
Dust: 50 mg/Nm3
Fuel: Gas
s
Co
mb
us
tio
nB
low
ers
F0404.EPS
All Rights Reserved. Copyright © 2004, Yokogawa Electric Corporation
TI 11M12A01-01E May 31,2004-00