Theoretical and experimental studies on the heavy water enrichment by thermal diffusion for improved performance under countercurrent-flow Frazier scheme and flow-rate fraction variations

被引：2

作者：

Ho, CD ^{[1
]}

Su, YC ^{[1
]}

Guo, JJ ^{[1
]}

Chen, SH ^{[1
]}

机构：

[1] Tamkang Univ, Dept Chem & Mat Engn, Taipei 251, Taiwan

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2004年 / 39卷 / 10期

关键词：

thermal diffusion; heavy water; separation efficiency; Frazier scheme; countercurrent flow;

D O I：

10.1081/SS-120039348

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The separation equation for heavy water enrichment by thermal diffusion in countercurrent-flow Frazier schemes has been derived and the average value of concentration-product term was treated separately in the enriching and stripping sections. The effect of the flow-rate fraction variation of a countercurrent-flow device on separation efficiencies for a H2O-HDO-D2O system, has also been investigated theoretically and experimentally. A qualitative agreement is achieved between the analytical predictions and experimental results. The analytical predictions are represented graphically and are compared with that in a classical Frazier scheme of the concurrent-flow device. Considerable improvement in the device performance is obtained by using a countercurrent-flow Frazier scheme with flow-rate fraction variations, instead of using a concurrent-flow device.

引用

页码：2299 / 2322

页数：24

共 28 条

[21] Mass transfer in laminar flow in concentric-tube thermal-diffusion columns for heavy water enrichment under the effects of flow-rate fractions and recycles
Ho, Chii-Dong
Chang, Kuang-Jung
Guo, Jia-Jan
CHEMICAL ENGINEERING COMMUNICATIONS, 2007, 194 (10-12) : 1430 - 1456
[22] Heavy water enrichment by thermal diffusion in the flat-plate frazier scheme with column heights increased at a constant ratio for improved performance
Hsu, Ching-Chun
Yeh, Ho-Ming
CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 2013, 91 (07): : 1289 - 1295
[23] The best column number in the countercurrent-flow Frazier scheme for deuterium recovery from water-isotopes mixture by thermal diffusion with total sum of column height fixed
Yeh, Ho-Ming
PROGRESS IN NUCLEAR ENERGY, 2011, 53 (01) : 19 - 23
[24] Enrichment of Heavy Water by Thermal Diffusion in the Frazier Schemes with Column Heights Varied at a Constant Increment for Improved Performance
Yeh, Ho-Ming
Tsai, Zheng-Xiu
Hsu, Ching-Chun
SEPARATION SCIENCE AND TECHNOLOGY, 2014, 49 (18) : 2933 - 2941
[25] The optimal number of thermal diffusion columns for deuterium recovery from H-D gas mixture in the countercurrent-flow Frazier scheme with the total sum of column heights fixed
Yeh, Ho-Ming
Hsu, Ching Chun
PROGRESS IN NUCLEAR ENERGY, 2012, 59 : 1 - 5
[26] Enrichment of heavy water in flat-plate thermal diffusion columns of the Frazier scheme with the optimal plate aspect ratio for best performance
Yeh, HM
CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 2000, 78 (03): : 596 - 600
[27] Enrichment of heavy water in a transverse-flow wired thermal-diffusion column with tubes rotated to achieve improved performance
Yeh, HM
JOURNAL OF THE CHINESE INSTITUTE OF CHEMICAL ENGINEERS, 2005, 36 (05): : 451 - 458
[28] Optimum plate-spacing for the best performance of the enrichment of heavy water in flat-plate thermal-diffusion columns of the Frazier scheme
Yeh, HM
SEPARATION SCIENCE AND TECHNOLOGY, 1996, 31 (18) : 2543 - 2556

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