CONDENSATION BOILER PLANT (VERSIONS) Russian patent published in 2013 - IPC F22B33/18 

FIELD: power engineering.

SUBSTANCE: condensation boiler plant includes a steam boiler with main and bypass gas ducts, a water economiser (WE), a condensation heat-exchanger-heat recovery boiler of combustion products heat (CHEHR), a smoke exhaust and a stack, and also a surface heat exchanger (HE), a thermal feedwater deaerator (DA) with a nozzle of flash steam discharge into the main gas duct, a contact heat-exchanger-humidifier of blow air (AH), connected to the DA, a surface heat-exchanger-heat recovery boiler of fuel combustion products (HEHR), installed upstream the CHEHR, and an absorption lithium bromide heat pump (ALBP), the evaporator of which with the CHEHR and HEHR create a circulation circuit of cooling medium.

EFFECT: invention makes it possible to increase efficiency of a boiler plant, to expand area of application of deep heat recovery and to reduce content of hazardous nitrogen oxides in discharge products of gas fuel combustion.

2 cl, 2 dwg