What Is a Venturi Scrubber?

Venturi scrubber is a wet type dust collector composed of venturi tube condenser and demister. According to the different ways of supplying liquid to the venturi throat, it can be divided into external spray venturi and internal spray venturi. Venturi scrubbers have the advantages of small size, simple structure, and high dust removal efficiency. The biggest disadvantage is the large pressure loss.

Venturi scrubber belongs to

Venturi scrubbers generally include

During the work of the Venturi scrubber, problems such as the diameter of the atomized water droplets and the liquid injection speed will directly affect the efficiency of the scrubber.

The diameter of the atomized water droplets during the dust removal process should not be too large or too small. Too small, the separation equipment behind the dust removal (usually used

(1) The surface finish of Venturi throat is generally 6, and other parts can be cast or welded, but the surface should be free of burrs.

(2) The packing on the flange connection of Venturi tube shall not allow protruding parts on the inner surface.

(3) It is not appropriate to set pressure measuring holes, temperature measuring holes and inspection holes in the body of Venturi tube.

(4) For corrosive gases with different degrees, anti-corrosion measures should be taken during use to avoid equipment corrosion.

(5) When using circulating water, the water should be fully clarified. The quality of the water should be less than 0.01% to prevent the nozzle from being blocked.

(6) The concentricity error of the venturi tube in the mounting flange connection tube does not exceed ± 2.5 mm. The ovality error of the round venturi can not exceed ± 1 mm.

(7) The level of the overflow vent of the overflow venturi shall be strictly adjusted at the horizontal position so that the overflow water is evenly distributed.

(8) When Venturi tube is used for high-temperature flue gas dust removal, pressure and temperature rise alarm signals shall be installed, and an accident high-level pool shall be provided to ensure the safety of water supply. ^[1]