Power Generation Boiler (Heavy Oil, Gas) - YOKOGAWA EXAxt ZR22G Technical Information

(2) Power generation boiler (Heavy oil, Gas)
This is a large-scale facility in which use for combustion control is more common than for
combustion 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
Boiler furnace outlet or
economizer outlet
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System type
L2, L3
Electric Precipitator
Air Preheater
Forced Draft Fan
Heavy Oil
Gas
<4. Applications>
Detector
D1, (D2)
Power generation boiler
Gas temperature: 250 to 350°C
Gas pressure: –0.1 to –0.8 kPa
Dust: ≦1 g/Nm
Fuel: Heavy oil (crude), gas
Steam
Reheater
Economizer
Fuel Pump
Objective
Combustion monitoring
O control
2
3
To turbine
Steam drum
To water drum
Water drum
F0402.ai
TI 11M12A01-01E Mar. 14, 2017-00
4-2
Feedwater