Premium
Analysis of particulate removal in venturi scrubbers—role of heat and mass transfer
Author(s) -
Placek T. D.,
Peters L. K.
Publication year - 1982
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690280106
Subject(s) - mass transfer , data scrubbing , chemistry , mechanics , venturi effect , scrubber , heat transfer , particulates , particle (ecology) , condensation , thermodynamics , waste management , mechanical engineering , chromatography , inlet , physics , engineering , oceanography , organic chemistry , geology
In a previous paper, a theoretical model of venturi scrubber performance was presented in which the operating variables, scrubber geometry, and droplet and dust size distributions are specified. The present paper examines the roles that heat and mass transfer have in determining the particle collection efficiency. The mechanisms of inertial impaction, interception, and diffusiophoresis are analyzed simultaneously to account realistically for heat and mass transfer effects on particle collection. Operation at elevated gas temperatures can substantially reduce collection, primarily due to the increase in gas density which occurs as the gas contacts the spray liquid. Mass transfer effects are important only when condensation onto the drops occurs, such as that during the scrubbing of saturated gas streams or when using cold liquid sprays. Under these conditions, mass transfer effects increase the collection efficiency.