What Is The Working Principle of A Rotary Flue Gas Heat Exchanger?

The rotor is divided into a flue gas passage area and an air passage area, which are separated from each other:

Heat absorption process: High-temperature flue gas (SCR outlet flue gas) flows downwards across one side of the rotor, transferring heat from the flue gas to the heat storage metal plate, heating the heat storage element;

Rotational heat transfer: The motor drives the rotor to rotate slowly and continuously (typically 1-3 r/min);

Heat release process: The heated heat storage element rotates to the air side, where cold air (primary and secondary air) horizontally washes against the corrugated plate. The metal plate releases heat to the cold air, which then heats up and becomes hot air;

The rotor rotates continuously, constantly repeating the cycle of "flue gas heat absorption → heat release to air," continuously achieving heat transfer between flue gas and air.