Industrial waste gas heat recovery heat exchangers are devices used to recover the heat energy contained in the exhaust gases emitted during the industrial production process. They transfer the heat from the exhaust gases to the fluids requiring heating, such as air, water, or other mediums, through heat exchange, thereby achieving the reuse of energy, reducing energy waste, and improving energy efficiency. These heat exchangers are commonly applied in high-energy-consuming industries like steel, chemicals, cement, and glass, and are one of the key technologies for industrial energy conservation and emission reduction.