Rapla Metall produces moving grates combustion chambers and hot water boilers with output range from 0,3MW to 5 MW. Moving grates furnaces are provided for hot water, steam or thermal oil boilers operating in heating systems.
Benefits
- High efficiency and low emissions
- Strong and reliable solution
- Water cooling of grates
- Fuel level control with IR sensors
- Cast and stacked masonry
- Automatic cleaning of heating surfaces
- Low maintenance costs
- Reliable rated power considering the different fuels used and their moisture content
- Long life
- Quick and easy installation thanks to a standardized solution
Typical scope
- Horizontal hot water boiler 6 bar 130 º conforms to PED 2014/68/EU
- Moving grates furnace equipped with fuel feeder
- Grates with a minimum chromium content of 26%
- Cast iron side plates with a minimum chromium content of 26%
- Primary air divided by combustion zones
- Primary air fan with frequency controller
- Secondary air /flue gas recirculation fan with frequency controller
- Recirculation mixed with secondary air
- Primary and secondary air ducts and regulating flaps with actuators
- IR level sensors to maintain the fuel level of the grates
- Level sensors and camera cooling
- Preheating of the primary air by cooling the outer combustion chamber insulation lines
- Refractory insulation, masonry and bricks
- Hydraulic ash scraper under the grate for automatic ash removal
- Hydraulic power unit for furnace grates, ash scraper. Shutoff valves, hydraulic pipelines
- Hydraulic cylinders for furnace grates, ash scraper
- Automatic smoke tube cleaning system, pneumatic 8 bar
- Optional: water-cooled standing and moving grate bar carriers
Fuel
- wood chip
- bark
- chunk peat
- milled peat and wood chip mixture
- wood pellets, peat pellets.
- Fuel moisture 10-60%
- Size [nominal length mm]: ≤ 50