11–16 May 2014
Casino Conference Centre
Europe/Prague timezone

Research on pyrohydrolysis of fluoride salts

15 May 2014, 17:30
1h 15m
Casino Conference Centre

Casino Conference Centre

Reitenbergerova 4/95, Mari&#225;nsk&#233; L&#225;zn&#283;, Czech Republic <font color=white>
Poster Chemistry of Nuclear Fuel Cycle / 1st ASGARD International Workshop Poster Session - Chemistry of Nuclear Fuel Cycle / 1st ASGARD International Workshop

Speakers

Prof. Lan Zhang (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)Dr Yuxia Liu (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)

Description

TMSR (Thorium-based Molten Salt Reactor) is one of the “Strategic Priority Research Program” of Chinese Academy of Sciences[1]. It offers attractions as power producers because of fuel utilization and safety characteristics. The molten mixture of ThF4, UF4 and LiF-BeF2 was used as fluid fuel in this reactor. Now we are developing a totally new flow sheet for TMSR fuel cycle in which the pyrohydrolytic technology is included. This kind of technology was first introduced by Warf et al. in the 1950s[2], which convert insoluble halide salts into corresponding oxides under a high temperature. A new designed pyrohydrolysis equipment was used in this work. It consists of a muffle furnace, reaction tube, steam generator and gas collecting system. Experiments on the different fluoride salts, such as ThF4, UF4 and SrF3 et al, were carried out with this device. The structure of pyrohydrolysis products were studied by Fourier Transform Infrared (FT-IR) and x-ray diffraction (XRD). [1] Mianheng, J., Hongjie, X., Zhimin, D. (2012) Advanced Fission Energy Program-TMSR Nuclear Energy System. Bulletin of Chinese Academy of Sciences. 27(3): 366-374. [2] Warf, J.C., Cline, W.D., Tevebaugh, R.D. (1954) Pyrohydrolysis in determination of fluoride and other halides. Anal. Chem. 26(2): 342-346.

Primary author

Dr Yuxia Liu (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)

Co-authors

Prof. Lan Zhang (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Mr Xiaobei Zheng (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Ms Xiaoyu Dong (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) Mr Yulong Song (Shanghai Institute of Applied Physics, Chinese Academy of Sciences)

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