The utility model discloses a kind of
coal-fired power
plant boiler systems of promoting deep carbon reduction capacity, by being equipped with hot secondary air warm
air heater on secondary air duct, and hot secondary air warm
air heater is equipped with extraction
steam heating hot secondary air after steam exhaust pipeline;Extraction
steam heating hot secondary air after steam exhaust pipeline connects two-stage
temperature and pressure reducer, and two-stage
temperature and pressure reducer is discharged by the steam exhaust
steam turbine two-stage extraction steam pipeline through the steam exhaust
steam turbine two-stage extraction steam pipeline adjusting valve of
steam turbine two-stage extraction steam pipeline;Main steam output pipeline is connected with one-stage
temperature and pressure reducer by being sequentially set extraction steam import shut-off valve, extraction steam import regulating valve extraction steam main
pipe in sequence, and one-stage temperature and pressure reducer is equipped with extraction steam pipeline after temperature and
pressure reduction;Extraction steam pipeline after temperature and
pressure reduction is communicated hot secondary air warm
air heater;To solve the problem that boiler stable
combustion, feedwater temperature is low,
coal mill
drying treatment is insufficient when
coal-fired power
plant boiler exists depth peak shaving, improve the economy of boiler deep regulation condition simultaneously, reduce carbon emission.