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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 10, 2008
Accepted November 3, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Two phase (air-molten carbonate salt) flow characteristics in a molten salt oxidation reactor

Yung-Zun Cho^† Hee-Chul Yang Yong Kang¹

Nuclear Fuel Cycle R&D Group, Korea Atomic Energy Research Institute, Dukjin 150, Yuseong, Daejeon 305-353, Korea ¹Department of Chemical Engineering, Chungnam National University, Gung 220, Yuseong, Deajeon 305-764, Korea

Korean Journal of Chemical Engineering, May 2009, 26(3), 828-832(5), 10.1007/s11814-009-0138-2

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Abstract

Molten salt oxidation process is one of the most promising alternatives to incineration that can be used to effectively destroy the organic components of mixed and hazardous wastes. To detect the flow characteristics of the molten salt oxidation process (air-molten carbonate salt two-phase flow), differential pressure fluctuation signals from a molten salt oxidation process have been analyzed by adopting the stochastic methods. Effects of the input air flow rate (0.05-0.22 m/sec) and the molten salt temperature (870-970 ℃) on the phase holdup and flow characteristics are studied. The gas holdup increases with an increasing molten salt temperature due to the decrease of the viscosity and surface tension of the molten carbonate salt. It is found that a stochastic analysis of the differential pressure signals enables us to obtain the flow characteristics in the molten salt oxidation process. The experimentally obtained gas holdup_x000D_ data in the molten salt reactor were well described and characterized by means of the drift-flux model.

Keywords

Molten Salt Reactor Gas Holdup Stochastic Analysis Flow Characteristics

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