Tuyeres are located tangentially along the inner cylinder to meter the two stage preheated combustion air supplied by a combustion air blower into the burner. The wood fuel is ignited by means of a gas pilot system which shuts off once the fuel is ignited and the refractory temperature is sufficient for continuing the wood ignition process.
A vertical refractory lined cylindrical chamber, much larger than the EDB standard retention chamber. The chamber features tangential tuyeres supplying preheated swirl combustion air to maintain the refractory temperature required for the complete combustion of hydrocarbons that may be emitted from the wood burner. Once the gases exiting the wood burner lose velocity at the choked burner discharge, the vertical chamber allows the heavier ash particles to drop out while the controlled high temperature of the refractory flashes off any combustibles that may be entrained in the discharge gases.
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