Gas waste heat recovery device for coal-fired boiler
A flue gas waste heat, coal-fired boiler technology, applied in feed water heaters, preheating, combustion methods, etc., can solve the problem of difficult cleaning and removal of ash deposits in the flue gas box, achieve good ash cleaning effect, and speed up the flow rate of flue gas. Effect
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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings:
[0025] figure 1 The shown coal-fired boiler flue gas waste heat recovery device has a flue gas box 101, a cooling box 105 is arranged on the flue gas box 101, and a cooling box 105 is arranged on the flue gas box 101. A plurality of heat exchange tubes 104 between the box 101 and the cooling box 105, the cooling box 105 is a cooling air box through which the cooling gas passes, and the heat exchange tubes 104 are provided with fins on the outside of the part inside the flue gas box 101 and the cooling box 105 The fume box 101 and the cooling box 105 are all covered with a thermal insulation layer. The front end of the flue gas box 101 is connected with an intake pipe 102 for intake of flue gas, and the rear end is connected with an outlet pipe 106 for exhaust gas. The sonic ash cleaner 107, the sonic ash cleaner 107 adopts a pneumatic sonic ash cleaner such...
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