F - Mech Eng,Light,Heat,Weapons – 23 – C
Patent
F - Mech Eng,Light,Heat,Weapons
23
C
158/34, 39/80
F23C 15/00 (2006.01) F23C 3/00 (2006.01)
Patent
CA 1166142
ABSTRACT The burner for metallurgical furnaces comprises a main combustion chamber and an auxiliary combustion chamber presenting a plurality of outlet channels communicating with the main combustion chamber . To the main combustion chamber there is fed in a pulsating manner a primary mix of fuel gas and air in stoichiometric ratio, and, during the intervals between the feed pulses, a secondary mix of fuel gas and air with a coefficient of excess air of 1.15 to 1.35 and at a rate fo flow corresponding to 1 to 3% of the nominal rate of flow. To the auxiliary combustion chamber there is instead continuously fed an auxiliary mix of fuel gas and air with a coefficient of excess air of 0.65 to 0.85 and at a rate of flow corresponding to 1 to 3% of the rate of flow of the primary mix. The combustion products of the auxiliary mix stay in the auxiliary combustion chamber for a very short time, more particularly for about from 0.005 to 0.01 sec., so that they still contain, when they enter into the main combustion chamber , active chemical substances, and particularly hydrogen atoms and radicals containing hydrogen atoms.
383999
Astafiev Anatoly A.
Borrello Silvio
Dolbenko Evgeny T.
Eletsky Stanislav A.
Gussak Lev A.
Italimpianti - Societa Italiana Impianti P.a.
Marks & Clerk
Nauchno-Proizvodstvennoe Obiedinenie Po Tekhnologii Mashinostroe
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