Biofire Palokärki burner

EN303-5

Palokärki burners 60-3000kW

In the Palokärki burners, the grate size has been dimensioned approx. 20% larger than the nominal power, and this ensures that the nominal power is also reached when burning fuel of a lower quality. Efficient burning is also performed by using a more humid fuel, because the grate is long and staggered, and this allows for the fuel pushed into the upper part of the grate from the rear edge of the burner to dry, before it is transferred into the actual combustion area.

  • Due to the large grate, nominal power is obtained, even with a fuel of poorer quality.
  • A long grate promotes the combustion of more humid fuel.
  • A burner can also be used to burn other fuels, such as pellets, grain and the husk waste created when drying grain, as a mixture with wood chips and/or peat.
  • Due to the steplessly adjustable flame, the system does not require an accumulator.
  • The burner is able to operate on extremely low power (2–10% power)
  • The burner can be equipped with an automatic ignition.

 

The fuel is pushed from the intermediate tank via the screw in the burner’s combustion end where combustion occurs. The design of the combustion end gasifies extremely well, due to a descending upper part, i.e., the roof, and the combustion air is forced to mix with the combustion gases. From the combustion end, the flame is led to the boiler’s convection.

A strong staggered cast-iron grate

A strong hydraulically moving grate aggregate

Massive ceramic side and roof stones

Precise air distribution and energy-efficient combustion-air fans

Power
Surface area of the fire grate
Feeder screw D
Weight
Power: 60 kW
Surface area of the fire grate: 0,08 m2
Feeder screw D: 124 mm
Weight: 160 kg
Power: 80 kW
Surface area of the fire grate: 0,14 m2
Feeder screw D: 145 mm
Weight: 320 kg
Power: 150 kW
Surface area of the fire grate: 0,20 m2
Feeder screw D: 145 mm
Weight: 480 kg
Power: 200 kW
Surface area of the fire grate: 0,30 m2
Feeder screw D: 195 mm
Weight: 1100 kg
Power: 300 kW
Surface area of the fire grate: 0,53 m2
Feeder screw D: 195 mm
Weight: 1200 kg
Power: 500 kW
Surface area of the fire grate: 0,65 m2
Feeder screw D: 195 mm
Weight: 1500 kg
Power: 650 kW
Surface area of the fire grate: 0,79 m2
Feeder screw D: 195 mm
Weight: 1750 kg
Power: 800 kW
Surface area of the fire grate: 0,90 m2
Feeder screw D: 290 mm
Weight: 2320 kg
Power: 1000+ kW
Surface area of the fire grate: 1,78 m2
Feeder screw D: 2x290 mm
Weight: 4050 kg
Power: 1500 kW
Surface area of the fire grate: 2,06 m2
Feeder screw D: 2x290 mm
Weight: 4700 kg
Power: 2000 kW
Surface area of the fire grate: 3,20 m2
Feeder screw D: 2x290 mm
Weight: 7050 kg
Power: 2500 kW
Surface area of the fire grate: 3,58 m2
Feeder screw D: 2x290 mm
Weight: 8200 kg

0* – the burner must be equipped with an automatic ignition, because, otherwise, the minimum power is approximately 2–10% of the nominal power. The minimum power is affected by, for example, chimney draught and the fuel used.

© Biofire Oy, 2021