Collection efficiencies and particle size distributions from sampling cyclones — comparison of recent theories with experimental data
作者:
R. L. Salcedo,
期刊:
The Canadian Journal of Chemical Engineering
(WILEY Available online 1993)
卷期:
Volume 71,
issue 1
页码: 20-27
ISSN:0008-4034
年代: 1993
DOI:10.1002/cjce.5450710104
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: cyclones;sampling;agglomeration;diffusivity
数据来源: WILEY
摘要:
AbstractThe grade collection efficiencies and particle size distributions from Stairmand‐type cyclones are compared with predictions from four theories, viz. the models of Leith and Licht (1972), Dietz (1981) Mothes and Loffler (1988) and Li and Wang (1989). It is shown that the theory of Mothes and Loffler, which recogizes different flow regions within a cyclone, coupled with a realistic estimate of the particles turbulent diffusivity, is capable of providing good estimates of both the grade‐efficiency curves and particle size distributions of the cyclone catch and/or outlet dusts. The lack of adequate theories or empirical formulae to estimate the effective turbulent diffusivity under cyclone flow seems the major factor hindering the use of the Mothes and Loffler theory for predictive purposes. High loadings and agglomeration of fines, if present, are responsible for strong departures from theoretical predicti
点击下载:
PDF
(885KB)
返 回