Stenter machine is the key energy consuming equipment, its energy consumption usually accounts for more than 40% of the total energy consumption of dyeing and finishing enterprises, which is an important part of energy saving and emission reduction of dyeing and finishing enterprises. The high temperature and large gas volume of waste gas from the shaping machine cause a lot of energy waste. The high temperature of waste gas is not conducive to the subsequent purification. For the efficient operation of the unit, heat recovery is an essential pretreatment unit for waste gas treatment. Using heat exchange method to recover part of the heat contained in waste gas can produce good economic benefits. The heat recovered by the water / gas heat exchanger is mostly stored in the form of hot water, which can be used in the scouring process in the printing and dyeing industry; the gas / gas heat exchanger is used to preheat the fresh air by using the heat in the exhaust gas and then use it in t he heat setting process.
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