Scrubber is a device used for purification of solid or gaseous media from admixtures in different processes.
Scrubbers can be used for recovery of solvent vapors and many other substances with selection of appropriate types of absorbing reagents.
Purification of gas from admixtures by means of scrubbers refers to wet purification methods. This method is based on gas washing with liquid (usually with water) at maximum extended surface of liquid contact with aerosol particles and probably more intensive mixing of purified gas with liquid. This method allows removal of dust, smoke, fog and aerosol (usually extraneous or harmful) particles of any size from gas.
In a scrubber, gaseous medium together with liquid medium is delivered to the injector chamber through vortex generators located in its lower part. At that, the intensive mass exchange occurs between phases in the volume. Compounds pass from gaseous phase to liquid process medium. Purified gas medium goes to the atmosphere and the liquid medium is delivered via a drain tube to the scrubber's receiving-separating tank. Losses of liquid process medium are compensated by its backup content from a small tank.
The efficiency of duct recovery in scrubbers increases with the growth of gas velocity in the neck and liquid spray rate. The best possible proportion of gas velocity in the pipe neck and liquid spay rate is specified for each type of dust; it depends on its particle size distribution.
SPA "Process"uses scrubbers for high-efficiency particulate collection and aerosol entrapment in ventilation systems of electroplating industry that, in its turn, allows efficient protection of the working zone and environment against harmful effects as well as for fan operation security.