IMPULSE-2 ACOUSTIC SCRUBBER Russian patent published in 2008 - IPC B01D47/06 B05B17/06 

FIELD: engines and pumps.

SUBSTANCE: proposed acoustic scrubber incorporates a housing made up of the upper and lower sections, a branch pipe to feed dusty gas, a mist eliminator furnished with a centrifugal swirler and a branch pipe to withdraw liquid from the aforesaid mist eliminator, a spraying system, plates with a vibrator and a stabiliser, a cyclic-spraying nozzle and a mud collector. The aforesaid stabiliser cells are square, while the stabilizer h_s to cell width b_s ratio exists in the range of h_s/b_s = 1.5 to 1.8. The plates are mare either perforated with the plate thickness b_p to hole diameter d_h ratio equal to h_p/d_h=0.5 to 1.5 slit-like with the plate thickness-to-slit width ratio in the range of h_p/b_h=0.8 to 1.5. The housing height H to housing diameter D ratio exists in the optimum range of H/D=4.0 to 6.5, while the housing diameter D to mist eliminator diameter d₁ lies in the range of D/D₁=1.2 to 1.25 and the housing diameter D to inlet and outlet branch pipe diameters B₁ exists in the range of D/B₁=2.0 to 2.5. The spraying system represents an acoustic nozzle incorporating a casing housing an ultra-sound frequency oscillation generator made up of a nozzle and an annular cavity resonator. The nozzle casing represents a vertical cylindrical sleeve with its upper part accommodating an air feed pipe. Note that a liquid feed pipe is arranged perpendicular to the aforesaid pipe, and the sleeve with top and bottom flanges is rigidly secured inside the housing and aligned with it. The aforesaid bottom flange is rigidly secured in the housing groove. The rod is arranged inside the aforesaid sleeve and aligned with it, the rod end being furnished with the aforesaid cavity resonator pressed therein and representing a taper-surface cup and the rod tail being furnished with locating plates to interact with the sleeve inner surface. The aforesaid lower flange accommodates, at least, one nozzle arranged at the angle to the cavity resonator axis varying 20°÷40°. Note here that the nozzle axis continuation lies on the circumference located at the resonator taper surface center.

EFFECT: higher efficiency and reliability provided for by increasing spraying efficiency.

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