FURNACE Russian patent published in 1997 - IPC

FIELD: thermal power stations. SUBSTANCE: furnace includes prismatic chamber 2 with inner and outer shields 2 and 3 mounted in its burner belt and made in form of tetrahedral and octahedral prism coupled by corners of inner prism and centers of faces of outer prism; tertiary blast nozzles 16 are mounted at joint areas. Inlet ends of burner devices 11 are connected to outer shield 3 and outlet sections of burners are formed by inner shield 2 as two coaxial cones 12 and 15 forming recirculating pipe and burner head. Bypass ports 9 and 10 are formed in upper and lower parts of inner shield 2 at points of its connection with outer shield 3 by bringing the tubes of shield 2 into slag screens 4 and 5. EFFECT: enhanced efficiency. 3 dwg