The minimum fluidization velocity has a minimum value when the frequency of sound waves approached 150 Hz, whereas it decreased as the sound pressure level was increased at the same sound frequency.

This paper puts forward a method based on online programmable analog device ispPAC10 s deferential amplification and the low-pass filter circuit for realizing the collection of the low-frequency sound wave signal.

The low-frequency sound wave is received in the laboratory.

Expenses for repairing and maintenance were reduced after the low frequency sound wave deashing device was used.

his paper briefly describes the imPOrtance of in-boiler dust removal, the construcrion of a combustion-supporting dust removal device based on the use of high-frequency sound waves, instructions forits use and an analysis of its working principle.