Heat Energy Utilization System of Boiler Blowdown Water
A boiler blowdown and boiler technology, applied in boiler cleaning devices, water/sludge/sewage treatment, descaling and water softening, etc., can solve the problems of waste of water resources, high ambient temperature at the discharge point, waste of energy, etc., and achieve saving The effect of heat
Active Publication Date: 2016-01-20
CHINA TOBACCO HENAN IND
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Problems solved by technology
The sewage pressure of the steam boiler is high and the temperature is very high, at least above 100°C. The direct discharge of the boiler sewage not only wastes energy, but also causes a high ambient temperature at the discharge point and a large amount of white water mist around it. If the temperature is directly cooled with tap water, it will cause A lot of water wasted
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[0040] figure 1 The direction indicated by the middle arrow is the flow direction of fluid (water or steam).
[0041] Such as Figure 1 to Figure 4 As shown, the thermal energy utilization system of boiler blowdown water of the present invention includes a softened water station, a boiler 18, a flash tank 19, a heat exchanger 20 and a cooling tank 21; the flow direction of fluid (water or steam) is forward.
[0042]The softened water station includes a water softener 22 and a water tank 23, the water softener 22 is connected to the water tank 23 through a soft water outlet pipe 24, the water tank 23 is connected with a water tank outlet pipe 25 and a water tank connection pipe 26; the water softener 22 is connected with a backwash outlet pipe 27.
[0043] The heat exchanger 20 is connected with a boiler water supply pipe 28 , a cooling tank inlet pipe 29 , a flash tank connection pipe 30 and the water tank outlet pipe 25 .
[0044] The water inlet of the boiler 18 is connec...
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The invention discloses a thermal energy utilization system for boiler blowdown water, which comprises a softening water station, a boiler, a flash tank, a heat exchanger and a cooling tank; The backwash outlet pipe is connected to the heat exchanger; the boiler water supply pipe, the cooling tank inlet pipe, the flash tank connecting pipe and the water tank outlet pipe are connected to the heat exchanger; the boiler water supply pipe and the boiler sewage pipe are connected to the boiler; Connect the water tank, the bottom of the flash tank is connected to the heat exchanger through the connecting pipe of the flash tank; the cooling tank is connected to the heat exchanger through the inlet pipe of the cooling tank, the bottom of the cooling tank is connected to the drain pipe of the cooling tank, and the side wall of the cooling tank is connected to an overflow pipe , the overflow pipe is connected to the sewage tank. The invention makes the boiler discharge sewage heat the boiler intake water; uses the flash steam to heat the water in the water tank, thereby not only reducing the temperature of the boiler discharge sewage, but also double heating the temperature of the boiler intake water, saving the heat energy required by the boiler.
Description
technical field [0001] The invention relates to the technical field of boilers, in particular to the reuse of boiler blowdown water. Background technique [0002] During the operation of the boiler, as the surface water evaporates and becomes steam, the concentration of salt on the surface of the boiler water increases, and the conductivity of the boiler water increases, which is not conducive to the safe operation of the boiler. It is necessary to drain part of the water on the surface of the boiler to reduce or Maintain the salinity concentration of boiler water so that the water quality can meet the needs of boiler operation. [0003] Boiler surface sewage is automatically discharged according to the conductivity of the boiler water. If the boiler has been running for a long time or the water quality is poor, the conductivity reaches the set point, the sewage electric valve is opened, and the boiler starts to discharge sewage. The sewage pressure of the steam boiler is h...
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IPC IPC(8): F22B37/54F22D1/50F22B1/00C02F5/00
Inventor 王正伟胡俊华何保兵石峰郭利民许世勇马楠
Owner CHINA TOBACCO HENAN IND