Desulfurization slurry heat extraction and water taking device utilizing unit steam extraction and working method thereof
A desulfurization slurry and water intake device technology, which is applied to steam engine devices, heating methods, household heating, etc., can solve problems such as cost and complex construction and transformation, large volume of spray heat exchanger, corrosion of spray heat exchanger, etc., and achieve Avoid dew point limitation, avoid direct contact, reduce the effect of corrosion
Pending Publication Date: 2022-02-11
HUANENG YINGKOU THERMAL POWER CO LTD +1
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Problems solved by technology
[0003] However, the flue gas heat transfer coefficient is low, the required spray heat exchanger is relatively large, and the cost and construction transformation are relatively complicated.
Due to the existence of certain water vapor and acidic impurities in the flue gas, there is a certain corrosion on the spray heat exchanger
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[0022] The present invention is described in further detail below in conjunction with accompanying drawing:
[0023] like figure 1 As shown, it is a desulfurization slurry heat extraction device for extracting steam from a unit according to the present invention, including a boiler 1, a feed water pump 2, a condenser 3, a steam turbine 4, a wet desulfurization tower 5, and a chimney in a coal-fired power generation unit 6. Desulfurization slurry outlet pump 7, desulfurization slurry inlet pump 8, injection tower 9, desulfurization slurry header 10, desulfurization slurry ejector 11, demister 12 and heating network water heater 13.
[0024] The steam outlet of boiler 1 is connected to the inlet of steam turbine 4, and the outlet of steam turbine 4 is divided into two routes, one of which is connected to the steam inlet of injection tower 9, and the other is connected to the inlet of condenser 3, and the outlet of condenser 3 is connected to the inlet of water pump 2 , the outl...
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The invention discloses a desulfurization slurry heat extraction and water taking device utilizing unit steam extraction and a working method thereof. The desulfurization slurry heat extraction and water taking device comprises a boiler, a steam turbine, an injection tower and a heat supply network water heater. A steam outlet of the boiler is connected with an inlet of the turbine, an outlet of the turbine is connected with a steam inlet of the injection tower, a steam outlet of the injection tower is connected with the hot end of the heat network water heater, and the cold end of the heat network water heater is connected with heat network water. Liquid water is heated by the boiler through heat released by fire coal combustion to turn the liquid water into high-temperature and high-pressure gas, the gas enters the steam turbine and then, enters the injection tower after doing work in the steam turbine, water vapor generated by injection in the injection tower enters the heat supply network water heater from a steam outlet of the injection tower, the water vapor exchanges heat with heat supply network water in the heat supply network water heater, and the heat supply network water is heated; and unit steam extraction and recycling of desulfurization slurry waste heat and water are achieved.
Description
technical field [0001] The invention belongs to the field of waste heat recovery, and relates to a device for extracting heat and water from desulfurized slurry using steam extraction of a unit and a working method thereof. Background technique [0002] The energy loss in thermal power plants mainly comes from the cold end loss and exhaust heat loss in the working fluid cycle. Among them, the cold end loss has been effectively reduced by increasing heat recovery and reheating, and implementing cogeneration of heat and power. The main loss of energy is concentrated in the heat loss in the waste heat of the flue gas. for further recycling. At present, after the coal-fired flue gas is wet desulfurized by the desulfurization tower, because the flue gas has a relatively high temperature and contains more water vapor, a spray heat exchanger is often used to reduce the flue gas temperature and recycle the flue gas. latent heat of water vapor. [0003] However, the flue gas heat ...
Claims
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IPC IPC(8): F01K11/02F01K17/04F04F5/24B01D53/80B01D53/50B01D53/96F24D15/00
CPCF01K11/02F01K17/04F04F5/24B01D53/80B01D53/504B01D53/96F24D15/00B01D2258/0283F24D2200/16F24D2200/26
Inventor 王志勇蔡浩飞李大超彭烁周贤姚国鹏安航白烨王会
Owner HUANENG YINGKOU THERMAL POWER CO LTD