METHOD OF REMOVING ASH OR DUST ADHERING TO HEAT CONDUCTIVE PIPE OF EXHAUST GAS HEAT EXCHANGER, AND ITS DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for effectively removing the ash or dust adhering to the heat conductive pipe of a heat exchanger. SOLUTION: Propagation efficiency is maintained, by attaching shock wave jetting pipes 10 to a part of heat exchanging rooms 2 and 2a where heat conductive pipes 3 are incorporated, driving these shock wave jetting pipes 10 intermittently, discharging shock waves intermtttently toward the heat conductive pipes 3, and blowing off the ash or dust adhering to the surfaces of the heat conductive pipes with the shock of these shock waves or removing the ash or dust adhering to them, thereby preventing the ash or dust from piling up on the heat conductive pipes.