DEVICE FOR COLLECTING HIGHLY DISPERSED PARTICLES FROM GAS STREAM Russian patent published in 2023 - IPC B01D51/08 

FIELD: gas purification.

SUBSTANCE: invention relates to devices for purifying gases from foreign inclusions of solid and liquid particles by exposing them to ultrasonic vibrations, namely to devices for ultrasonic coagulation of highly dispersed (size less than 2.5 microns) particles. The device for collecting highly dispersed particles from a gas flow contains a tangential swirler of a descending dust and gas flow, a separation chamber for it, a shaper - a swirler for the ascending dust and gas flow, a separation chamber for the ascending dust and gas flow, an exhaust pipe and a device for creating ultrasonic vibrations to influence dust and gas flows. The separation chambers for the downward and upward dust and gas flow are made in the form of hollow cylinders of different diameters, placed one inside the other coaxially, the distance between the inner wall of the separation chamber for the downward dust and gas flow and the outer wall of the upward flow separation chamber, as well as the internal diameter of the upward flow separation chamber is a multiple of half the wavelength ultrasonic vibrations formed in the dust and gas environment. As a device for creating ultrasonic vibrations, a separation chamber for an ascending dust and gas flow is used, made in the form of a metal flexural-oscillating cylinder mechanically and acoustically connected to a piezoelectric transducer with a stepwise variable outer diameter and a length of no more than 2/3 of the length of the separation chamber for a descending dust and gas flow.

EFFECT: invention ensures coagulation of particles with a size of 2.5 microns with a probability of at least 99%, and particles with a size of 1 micron with a probability of at least 90% at a dusty gas flow rate of at least 500 m³/hour.

1 cl, 1 dwg