4-2
All Rights Reserved. Copyright © 2004, Yokogawa Electric Corporation
<Toc> <Ind>
TI 11M12A01-01E
4. Applications
b) Power generation boiler (Heavy oil, Gas)
This is a large-scale facility in which use for combustion control is more common than for combus-
tion monitoring.
In cogeneration, the majority of cases involve measurement at a single point. In electric power
companies, measurements are performed at multiple points in a single flue.
Sample point
System type
T0402.EPS
Objective
Detector
Boiler furnace outlet or
economizer outlet
L2, L3
D1, (D2)
Combustion monitoring
O
2
control
Heavy Oil
Gas
Forced Draft Fan
Air Preheater
Electric Precipitator
Fuel Pump
Economizer
Reheater
High Pressure Steam
Medium Pressure Steam
F0402.EPS
Power generation boiler
Temperature: 250 to 350
°
C
Pressure: –0.1 to –0.8 kPa
Dust:
⬉
1 g/Nm
3
Fuel: Heavy oil (crude), gas
May 31,2004-00
