4results about How to "Increase feed water temperature" patented technology

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.

The utility model relates to an efficient coal-fired generator set. The coal power unit comprises a boiler, a high-pressure cylinder, a back pressure machine and a feed water heating assembly. The steam output end of the boiler is connected with the steam input end of the back pressure machine; the steam output end of the back pressure machine is connected with the steam input end of the high-pressure cylinder; the first steam circulation area of the back pressure machine is smaller than the second steam circulation area of the high-pressure cylinder; the steam output end of the back pressure machine and the steam output end of the high-pressure cylinder are respectively connected with the feed water heating assembly so as to output steam to the feed water heating assembly; the feed water heating assembly is connected with the feed water end of the boiler so as to output feed water heated by steam to the boiler. The coal consumption of the coal power unit can be reduced.

The application discloses a coal powder boiler peak regulation method, which comprises the following steps: modifying the coal powder into high-temperature gas-solid fuel by using a coal powder preheating combustion method; and setting a heat exchange surface in the preheating burner, and heating the boiler feed water before the boiler feed water enters an economizer. The method solves the problem of poor combustion stability of the boiler at low load, increases the temperature of the boiler feed water, reduces the heat absorption amount of the economizer from the flue gas, reduces the temperature drop range of the flue gas through the economizer, increases the flue gas temperature at the inlet of the SCR, and ensures that the SCR denitration system works in a safe and efficient temperature range.

This utility model discloses a water-saving device for a waste heat boiler deaerator, including a deaerator tower for removing dissolved oxygen from water, a demineralized water tank below the deaerator tower, a deaerator inlet pipe connected to the deaerator tower for water intake, a steam pipe connected to the deaerator tower for deoxygenation, and a louvered steam-water separator connected to the top of the deaerator tower for steam-water separation. The tail end of the louvered steam-water separator is connected to a first bend, the tail end of the first bend is connected to a second bend, the tail end of the second bend is connected to a vertical pipe, the tail end of the vertical pipe is connected to a perforated plate steam-water separator for steam-water separation, and the tail end of the perforated plate steam-water separator is connected to a third bend. By adding a steam-water separator, not only is water loss during the deaerator deoxygenation process reduced, but the problem of steam-water separation during deaerator venting in a thermal deaerator system is also solved. Furthermore, the temperature of the deaerator can be better controlled when the deaerator steam pressure changes.