Analysis of particulate removal in venturi scrubbers—role of heat and mass transfer
作者:
T. D. Placek,
L. K. Peters,
期刊:
AIChE Journal
(WILEY Available online 1982)
卷期:
Volume 28,
issue 1
页码: 31-39
ISSN:0001-1541
年代: 1982
DOI:10.1002/aic.690280106
出版商: American Institute of Chemical Engineers
数据来源: WILEY
摘要:
AbstractIn 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.
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