Application of neutron techniques to studies of reactor fluid dynamics |
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| Institution: | 1. College of Energy, Chengdu University of Technology, Chengdu 610059, China;2. Research Institute of Exploration and Development, Petro China Southwest Oil & Gasfield Company, Chengdu 610041, China;1. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;2. School of Chemical Engineering, University of Queensland, St. Lucia, Qld 4072, Australia;1. Functional and Interactive Polymers, DWI – Leibniz Institute for Interactive Materials e.V., Forckenbeckstraße 50, 52074 Aachen, Germany;2. Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany;3. Aachen Maastricht Institute for Biobased Materials (AMIBM), Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands;4. Aachener Verfahrenstechnik – Process Systems Engineering, RWTH Aachen University, Forckenbeckstraße 51, 52074 Aachen, Germany;1. Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung–Li District, Taoyuan City 32003, Taiwan;2. Department of Internal Medicine, National Taiwan University Hospital, Taipei 100233, Taiwan;1. Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki, 319-1106, Japan;2. Materials and Life Science Division, J-PARC Center, Tokai, Ibaraki, 319-1195, Japan;3. Frontier Research Center for Applied Atomic Sciences, Ibaraki University, Tokai, Ibaraki, 319-1106, Japan;4. Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan |
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| Abstract: | Techniques have been developed for determining residence time distributions, flow rates and levels or distributions of materials contained inside reactor vessels with metal walls. The techniques, which utilize the scattering and absorption of neutrons emitted from a small encapsulated neutron source, are non-intrusive, suitable for use on thick-walled vessels, do not require radioactive tracers to be used and are especially suited to the study of systems containing hydrogen. The results of studies of flow and phase distributions in a variety of laboratory bubble column reactors show that the techniques are suitable for detecting liquids in vessels with wall thicknesses of up to 100 mm and for detecting tracer concentrations as low as 0.005 wt. %. |
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