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ZR22G & 402G |
Package boilers require less fuel and electric power to operate and are widely used in the pharmaceutical, food, ceramic, and other industries. A package boiler operates more efficiently if the oxygen concentration in the flue gas is reduced. On the other hand, insufficient air intake causes incomplete combustion, resulting in increased smoke emission. Optimizing air intake for boiler operation requires continuous measurement of the oxygen concentration in the flue gas.
The typical package boiler is a water tube boiler or flue and smoke tube boiler with a capacity of 5 to 20 t/h (average steam generation capacity). The most widely used fuels are heavy oil, light oil, and gas.
The ZR22/ZR402 zirconia oxygen analyzer is ideally suited for package boilers thanks to its long service life and low maintenance, and is an effective tool for the reduction of fuel and electric power consumption.
Structure of Package Boiler
Process Conditions
Measuring point: | Boiler outlet, economizer outlet |
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Temperature: | 150 to 300 °C |
Flow Velocity: | 15 m/s max. |
Pressure: | ±0.5 kPa |
Dust: | 1 g/Nm3 max. |
Effectiveness in Saving Energy
A 1% reduction in excess oxygen of flue gas realizes a 0.8% saving in fuel.
Measurement system
Detector: | ZR22G-☐☐☐-S-☐-☐-☐-☐-E-A |
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Converter: | ZR402G-☐-E-E-A |
Flow setting unit: | ZA8F-☐*B |
Options: | Dust guard protector: P/N K9471UC |
Utilities
Power supply: | 85 to 264 V AC, 50/60 Hz |
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Instrument air (reference gas): | Pressure; 300 to 700 kPa |
Notes on Installation
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Figure 1 Instructions for Installation |
Special Notes
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