Abstract: A furnace is provided for burning soila organic fuels including highly volatile organic fuels. A combustion chamber with an ash hopper has a slot mouth opening defined by slopes of the walls of the combustion chamber. A burner is disposed beneath the ash hopper mouth opening and extends across its entire width. A bottom blast inlet device generates a turbulent zone in the lower region of the combustion chamber. A duct is further provided for injecting a sulfur-absorbent material into the furnace chamber. The duct is disposed between the burner and the ash chamber and defines a longitudinal axis which traverses the turbulent zone. Preferably, the burner is tilted downwardly and is disposed on a wall in common with the sulfur-absorbent induction duct. The proportion of the sulfur-absorbent materials in the fuel mixture is in the range of 10% to 100% by mass.

Abstract: The low-emission swirling-type furnace is designed to burn organic fuel and it can be most advantegeously used for dust combustion.A low-emission swirling-type furnace, according to the invention, comprises a combustion chamber (1) with a prismatic dry-bottom hopper (5) having a slot mouth, and an undergrate blast inlet means (7) disposed thereunder. The furnace includes at least one burner (2) formed by at least a pair of ducts (2a,2b ) lying one above the other and intended for supplying the air-fuel mixture. The ducts (2a, 2b) are each provided with a device (3, 4) for controlling the "air/fuel" ratio, ensuring such a ratio between the amount of air and the amount of fuel in each of the ducts (2a,2b ) that for the overlying duct (2a), this ratio turns out to be invariably higher than for the underlying duct (2b).