Coupling system and operation method of low temperature flue gas water recovery and waste heat utilization in coal-fired power stations
A technology for low-temperature flue gas and coal-fired power stations, which is applied in combustion methods, feed water heaters, and greenhouse gas reduction. It can solve problems such as low-temperature corrosion and low temperature of flue gas from electrostatic precipitators, and reduce low-temperature corrosion and pollutants. Emissions and the effect of reducing power consumption of the unit plant
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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0025] Such as figure 1 As shown, the low-temperature flue gas water recovery and waste heat utilization coupling system of a coal-fired power station of the present invention includes a rotary air preheater 1, a low-temperature economizer 2 sequentially connected to the flue gas outlet of the rotary air preheater 1, a second One part of adjustable flue gas heat exchanger 3, the second part of adjustable flue gas heat exchanger 4, low temperature flue gas cooler 5, electrostatic precipitator 6, desulfurization tower 7, flue gas condenser 8, flue gas reheater 9 , chimney 10; the second-stage heater 11 and the first-stage heater 12 communicated with the air side inlet of the rotary air preheater 1; also includes the flue gas reheating system circulating water pump 13, the second-stage heater Circulating water pump 14, first stage heate...
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