FIELD: equipment for thermal cracking and pyrolysis of crude oil materials and heating of heat-carriers. SUBSTANCE: method involves separate supplying of fuel gas and oxidizer (air or flue gas) into radiation chamber of furnace so that oxidizer containing 5-99% by weight of oxygen and having self-ignition temperature exceeding that of fuel gas is introduced into radiation chamber in flow; dosing fuel gas during flowing of oxidizer. EFFECT: increased service life of furnace coils and improved operational safety. 2 cl, 1 dwg
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