ULTRASONIC GAS CLEANING METHOD Russian patent published in 2023 - IPC B01D51/08 

FIELD: gas purification.

SUBSTANCE: invention relates to the field of technologies for purifying gases from foreign solid particles by exposing them to ultrasonic vibrations, namely to methods for ultrasonic coagulation of particles less than 2.5 mcm in size. The method of ultrasonic gas cleaning consists in the impact of ultrasonic vibrations on a gas flow with foreign particles, when it is passed between two flat surfaces, one of which is made in the form of a bending-oscillating disk, and the second reflects the vibrations passed through the flow. Water is supplied to the radiating surface of the flexural-oscillating disk through holes made in it, dispersion is ensured due to vibrations, and the effect of ultrasonic vibrations on the gas flow with foreign particles as it moves between the radiating and reflecting surfaces is carried out through a cloud of dispersed water. Ultrasonic exposure is carried out at a frequency of at least 22 kHz with an amplitude of oscillations of the zones of maximum oscillations of the radiating plate of at least 12 mcm. The gas flow is formed by tangential introduction for its movement along a spiral trajectory between the emitting and reflecting surfaces located at a distance that is a multiple of, but not exceeding, 3-5 half-waves of ultrasonic vibrations in the formed medium. The flow with water particles that have absorbed foreign particles is discharged through the central hole in the reflective surface.

EFFECT: invention ensures the efficiency of coagulation of particles with sizes from 1 to 2.5 microns using the proposed method, which is 10 times higher than the efficiency of the known method.

1 cl, 1 dwg