THE STUDY OF THE PARTICLES SIZE INFLUENCE ON THE VENTURI SCRUBBERS PERFOMANCE

摘要

The suspended particles in the air are a factor that causes chronic illnesses to thernrespiratory system, which go from allergy to severe pulmonary damage. Particulary, breathablernparticles (from 0,5 μm to 5,0 μm sizes) cause damages to the respiratory system. The penetrationrnand the deposition are the reason for the damages to the pulmonary alveolus.rnThe industrial activity is the main responsible for the most part of the breathable particles emission.rnBecause of that, Venturi scrubbers have been incorporated to the industrial process due to their highrnefficiency for particle collection.rnVenturi scrubbers are gas-atomizing devices. They are mechanical devices which rely on shearingrnand impaction forces to break water into fine droplets. Those droplets in contact with the particles,rnwill collected them.rnThis work consists of a Venturi scrubber of circular section operating horizontally, with liquidrninjection through a single orifice located in the scrubber throat. The experiments will analyse therninfluence of the length throat, gas velocity, liquid flow and particles sizes on the Venturi'srncollection efficiency.