BOILER PLANT Russian patent published in 2011 - IPC F22B33/00 

FIELD: power industry.

SUBSTANCE: proposed boiler plant containing stack with air channel between load-carrying reinforced shaft and lining forming the gas outlet channel, and steam air heater for air heating and fan for supply of air heated steam air heater to air channel of stack, which are installed under gas outlet channel of stack. At that, in lining of stack in staggered order there made are rectangular holes at an angle of 50-60° to horizon for supply of heated air from air channel to near-wall layers of flue gases flowing via gas outlet channel. At that, surface areas of rectangular holes in movement direction of heated air in air channel are uniformly decreased, and their bases are located horizontally.

EFFECT: improving operating reliability of the boiler plant by excluding condensation of water vapours from flue gases on inner surface of lining of stack.

3 dwg