The dust removal work of the smoke-tube waste heat boiler cannot be underestimated. The heating area of ​​the waste heat boiler is affected by many factors such as flue gas characteristics, temperature level and heating surface structure. The boiler design and operation adjustment often cannot solve the problem of ash accumulation on the heating surface of the waste heat boiler. . The ash removal of the waste heat boiler should choose an appropriate method to reduce the ash accumulation on the heating surface of the waste heat boiler and ensure the operation of the waste heat boiler. There are mainly the following methods for cleaning the ash from the flue-tube waste heat boiler:

　　1, sonic soot blower cleaning dust

　　sonic soot blower cleans dust mainly through compressed gas vibrating diaphragm or sound wave generator, which converts the energy of compressed gas into sound energy of some frequency, and the sound wave enters the space area where the boiler is operated. The sound energy is used to oscillate dust particles and air molecules, thereby preventing dust particles from accumulating on the heating surface and bonding between dust particles; then using the power of the flue gas and the gravity of the dust particles to take them out of the boiler.

　　2, steam cleaning

　　Waste heat boiler steam cleaning is to use high-pressure steam as the working medium, the high-pressure steam is sprayed to blow the heat exchange surface through the soot blowing pipe and soot blower, and the impact kinetic energy of the high-pressure steam is used for ash removal.