Power Generation Boiler Window Box - YOKOGAWA EXAxt ZR22G Technical Information
Direct in situ zirconia oxygen analyzer (applications volume)
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Also See for EXAxt ZR22G:
- User manual (241 pages) ,
- Technical information (37 pages) ,
- Technical note (6 pages)
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Power generation boiler window box
In large boilers such as those for power generation, part of the combustion exhaust gas is
recycled to the combustion intake, and the oxygen concentration in the recycled gas is monitored
so that it does not drop too low.
The analyzer range will be a partial range that includes the atmospheric oxygen concentration,
such as 15 to 22%O
Sample point
Window box
Note:
The ZO21DW (terminal box explosion-proof type detector; pressure compensated type) or the ZR22G (pressure
compensated type) will be used. These are many cases in which the AV550G averaging converter will be used.
Heavy Oil
All Right Reserved Copyright © 2004, Yokogawa Electric Corporation
.
2
System type
Electric Precipitator
Air Preheater
Forced Draft Fan
Gas
Power generation boiler window box
Gas temperature: Max. 550°C
Gas pressure: −5 to 20 kPa
Detector
L2, L3
D1 (Note)
Steam
Reheater
Economizer
Fuel Pump
Gas Recycle Fan
<4. Applications>
Objective
O
, control alarm
2
To turbine
Steam drum
To water drum
Window Box
Water drum
Combustion Exhaust Gas
TI 11M12A01-01E
4-16
Feedwater
F0416.ai
Mar. 14, 2017-00
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