Open AccessDrop Size Measurements in a Laboratory Scale Venturi Scrubber
Author(s) -
Diego Fernández Alonso,
B.J. Azzopardi,
José Antônio Silveira Gonçalves,
José Renato Coury
Publication year - 2001
Publication title -
revista brasileira de ciências mecânicas
Language(s) - English
Resource type - Journals
ISSN - 0100-7386
DOI - 10.1590/s0100-73862001000400008
Subject(s) - venturi effect , diffuser (optics) , pressure drop , mechanics , materials science , drop (telecommunication) , scrubber , combustion , inlet , environmental science , analytical chemistry (journal) , optics , chemistry , mechanical engineering , physics , chromatography , waste management , engineering , light source , organic chemistry
Venturi scrubbers are high efficiency gas cleaners in which suspended particles are removed from gas streams by droplets formed by liquid atomisation, usually in the venturi throat. The size of the droplets formed is of fundamental importance to the performance of the equipment, both in terms of pressure drop and collection efficiency. In this study, drop sizes in a cylindrical laboratory scale venturi scrubber were measured using a laser diffraction technique. Gas velocity and liquid to gas ratios varied from 50 to 90 m/s and 0.5 to 2.0 l/m3, respectively. Water was inserted as perpendicular jets at the beginning of the throat. Measurements were performed at three positions: two located along the throat, and the last one at the end of the diffuser. The data presented here are a typical example of pneumatic atomisation and can be relevant to other industrial applications such as combustion and engine technology. Finally, results are compared to available correlations and the validity of these equations is discussed