BURNER Russian patent published in 1999 - IPC

FIELD: combustion of gas-and-air mixture using waste gas as source of heat. SUBSTANCE: burner has housing 1 with furnace chamber with inlet hole 2 for delivery of gas-and-air mixture used as fuel and outlet hole 3 for waste gases. Furnace chamber is filled porous material 5 whose porosity changes along furnace chamber in such way that pores in way of gas-and-air mixture flow increase forming critical Peclet number on boundary surface or in definite zone B of porous material 5. At critical Peclet number, flame is likely to arise and below this number, flame is suppressed. EFFECT: enhanced stability of combustion at low temperature; reduction of toxic emissions. 24 cl, 6 dwg