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Research Papers: Nuclear Power

Chromatography Column System With Controlled Flow and Temperature for Engineering Scale Application

[+] Author and Article Information
Sou Watanabe, Ichiro Goto, Yuichi Sano, Yoshikazu Koma

 Japan Atomic Energy Agency, Tokai, Ibaraki 3191194, Japan

J. Eng. Gas Turbines Power 132(10), 102903 (Jun 30, 2010) (7 pages) doi:10.1115/1.4000341 History: Received July 20, 2009; Revised July 28, 2009; Published June 30, 2010; Online June 30, 2010

The Japan Atomic Energy Agency is conducting research and development study on the engineering scale extraction chromatography system, which uses silica-based adsorbents impregnated with an extractant for the minor actinides (Am and Cm) recovery from the high level liquid waste generated in the spent fast breeder reactor (FBR) fuel reprocessing, as a part of the fast reactor cycle technology development project. A bench scale testing system was made and provided for the first step of development. The column of the test system (inside diameter of 480 mm or 200 mm with height of 650 mm) was equipped with ports for six external sensors at its top, middle, and bottom levels for measuring the flow velocity or temperature, and for additional six heaters for simulating the decay heat of Am and Cm at the middle level of the column. The flow velocity distribution was almost constant except for the part that is very near the column wall, and it was almost uniform when the liquid flew from top to bottom direction with 4 cm/min of the velocity. The heaters scarcely influenced the temperature profile inside the column when the power applied to the heater simulated the decay heat of Am, Cm, and fission products (FPs). The decay heat generated in the column was transported to the effluents, and the temperature inside the column was kept almost constant.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 1

Diagram of the testing system

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Figure 2

Columns of the testing system

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Figure 3

Structure of the point sensor for the velocity measurements

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Figure 4

Column configuration of the sensors for the flow velocity measurements

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Figure 5

Column configuration of the CFD calculation and mesh size of the column

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Figure 6

Configurations of heaters and thermocouples

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Figure 7

Average fluid velocity in the column with 200 mm ID

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Figure 8

Average fluid velocity in the column with 480 mm ID

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Figure 9

Velocity profile in the column obtained by the CFD simulation

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Figure 10

Velocity profile at middle of the column

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Figure 11

Apparent thermal conductivity of the bed with water flow

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Figure 12

Temperature distribution in the column with 200 mm ID

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Figure 13

Temperature distribution in the column with 480 mm ID

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