A waste heat recovery heat exchanger is a heat exchanger that can be used to heat air with either flue gas or exhaust gas, or tail gas from high-temperature wastewater boiler, serving as the heat medium. It is widely applied in the air heating and cooling processes of various industries such as chemicals, textile dyeing and printing, machinery, chemical fibers, food, rubber, metallurgy coating, wood drying, leather, and plastic.

The waste heat recovery system utilizes air-to-air heat exchange, extracting heat energy from high-temperature waste smoke to generate fresh air for production or heating needs. There is also an air-to-water heat exchange method, which extracts heat energy from high-temperature waste smoke to produce hot water, used for boiler water replenishment or domestic bathing water. The heat exchange pipes are made of φ21x2.0mm seamless steel tubes coiled around 15x0.5mm corrugated steel strips, forming a helical structure with three rows of spiral fins. The fins have a distance of 5mm (D), 6mm (Z), or 8mm (X), and are made from 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℃. The finned tubes and fins are made 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 a large amount of high-temperature waste gases, flue gases, and waste heat, which not only waste thermal energy but also pollute the environment. Heat recovery heat exchange equipment utilizes the extracted heat energy from the 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 conservation, and environmental protection.