OPERATING METHOD OF TANGENTIAL FURNACE Russian patent published in 2012 - IPC F23C5/08 F23C9/08 

FIELD: power industry.

SUBSTANCE: method of tangential furnace with angular multi-tier modular location of burners oriented at a tangent to conditional circle by supplying to the above burners the equal flow of fuel-air mixture and recirculation gases; at cut-out of burner assembly the flows of fuel-air mixture and recirculation gases, which are supplied to burner assemblies, are specified in compliance with the following relationships: B_i=(0.4684-0.045i)B, i=2, 3, 4; r_i=0.0267i³-0.250i²+0.8033i-0.5507)r, i=1, 2, 3,4, where i - burner assembly number starting from the one that is cut-out (for which B₁=0) in gas flow direction; B_i - fuel-air mixture flow supplied to i burner assembly; r_i; - recirculation gas flow supplied to i burner assembly; B - total fuel-air mixture flow supplied to the furnace; r - recirculation gas flow supplied to the furnace.

EFFECT: invention allows improving fuel combustion quality and operating reliability by eliminating the temperature unevenness in active combustion zone and by preventing the slagging of water wall heating surfaces at cut-out of burner assembly.

2 dwg