Self-circulation burner for improved low nox

Abstract

Abstract PURPOSE: Multi-stage combustion is effected by feeding the combustion air to the two-stage form and fuel NO produced at a low rate. CONSTITUTION: A primary air feed nozzle 5a and 5b opened to a mixing chamber 6, installed adjacent to a fuiel injection nozzle 3 and the secondary air feed nozzle 11a, 11b opened to a combustion chamber 8 are installed by piercing a pathway 10. By doing so, the combustion air is supplied in such a rate, i.e. 30-90% from the primary air feed nozzle 5a and 5b and 70%-10% from the secondary air feed nozzle 11a and 11b. Then, the flame which commences the combustion adjacent to the mixing chamber 6 becomes the reduction flame combustion and NO oxidation of the combusting organize nitrogen is prevented and then the combustion exhaust gas including much imperfect combustion part is combustioned gradually by the combustion air from the secondary air feed nozzle 11a and 11b for reducing the thermal NO COPYRIGHT: (C)1979,JPO&Japio

Inventors

• 👤 Toshiharu Furukawa
• 👤 Kouichirou Kanefuji

Bibliographic Details