The invention belongs to the technical field of
environmental protection, particularly relates to a high-temperature
flue gas
waste heat utilization device. Aiming at solving the problems that a traditional high-temperature
flue gas heat
recovery device is generally simple in structure,
flue gas is directly introduced into the device for heat exchange, the wall surface of a heat exchange componentis prone to be attached with dust, and then the heat
recovery effect is affected, the following scheme is provided. According to the scheme, the novel device comprises a heat exchange tank, a water outlet is formed in the bottom end of the heat exchange tank, and a water outlet hopper is welded to the inner wall of the water outlet. According to the novel device, by arranging an automatic drainage mechanism, when the temperature of water in the heat exchange tank continuously rises, and the
internal pressure rises to a certain value, a sealing top plate is pressed to be separated from a fixing ring, so that the water flows out; and in the process of losing magnetic adsorption of magnetic blocks, the water flows out and impacts, along with the water outlet hopper, a flow dividing blockingpiece and a supporting plate with a semispherical plate, so that continuous pulling force is generated on the sealing top plate, and then it is guaranteed that the sealing top plate is far away from the fixing ring, and the automatic drainage is smoothly carried out.