A waste heat recovery heat exchanger is a heat exchanger that can heat air using either flue gas or waste gas or exhaust gas from high-temperature wastewater boiler as the heat medium, and is suitable for both flue gas and exhaust gas. It is widely used in the air heating and cooling processes of industries such as chemicals, textile dyeing and finishing, machinery, chemical fibers, food, rubber, metallurgical coating, wood drying, leather, and plastics.

Heat recovery utilizes gas-gas heat exchange method to extract heat energy from high-temperature waste smoke, generating new air for production or heating needs. There's also a gas-water heat exchange method, which extracts heat energy from high-temperature waste smoke to produce hot water, used for pot topping up or domestic bathing water. The heat exchange pipes are made of φ21x2.0mm seamless steel tubes, wrapped around 15x0.5mm corrugated steel strips to form spiral finned tube bundles. The finned tubes are composed of three rows of spiral finned tube bundles with a flow direction parallel to the air. The fin spacing is available in 5mm (D), 6mm (Z), and 8mm (X), and the materials include stainless steel or carbon steel.

The heat medium pressure of the waste heat recovery heat exchanger is below 2.2 Mpa, and the temperature is within 350°C. The heat dissipation tubes and fins are wound by a special winding machine, ensuring tight and stable contact, excellent heat transfer performance, corrosion resistance, long service life, attractive appearance, easy installation, and convenient management.

Industrial emissions release large quantities of high-temperature waste gases, flue gases, and waste heat, which not only waste thermal energy but also pollute the environment. Heat recovery heat exchangers utilize the thermal energy extracted from waste heat and flue gases to produce hot air, hot water, or hot oil for reuse in industrial production, thereby achieving the goals of high efficiency, energy saving, and environmental protection.