Mass Transfer in Laminar Flow in Concentric-Tube Thermal-Diffusion Columns for Heavy Water Enrichment under the Effects of Flow-Rate Fractions and Recycles

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Title:	Mass Transfer in Laminar Flow in Concentric-Tube Thermal-Diffusion Columns for Heavy Water Enrichment under the Effects of Flow-Rate Fractions and Recycles
Authors:	Ho, Chii-dong;Chang, Kuang-jung;Guo, Jia-jan
Contributors:	淡江大學化學工程與材料工程學系
Keywords:	Graetz problems;Orthogonal expansion techniques;Separation efficiency;Thermal diffusion;Water isotopes
Date:	2007-11-01
Issue Date:	2010-08-09 18:03:28 (UTC+8)
Publisher:	Taylor & Francis Inc.
Abstract:	An orthogonal expansion technique for solving separation problems in laminar countercurrent concentric circular thermal-diffusion columns under flow-rate fraction variations is developed analytically and applied to heavy water enrichment. Experimental work for the H2O-HDO-D2O system has been also conducted. The present theoretical predictions are based on Sturmian theory, and positive and negative eigenvalues are needed for enriching and stripping sections, respectively, during the calculation procedure. The results show that the theoretical predictions are in better agreement with the experimental results than those predicted in previous works by using the transport equation.
Relation:	Chemical Engineering Communications 194(11), pp.1430-1456
DOI:	10.1080/00986440701401727
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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