FLiNaK熔盐的制备

doi:10.11889/j.0253-3219.2014.hjs.37.050604

Nuclear Techniques ›› 2014, Vol. 37 ›› Issue (05): 50604-050604.doi: 10.11889/j.0253-3219.2014.hjs.37.050604

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles

Preparation of FLiNaK molten salt

ZONG Guoqiang CHEN Bo ZHANG Long SUN Jiahong DONG Qun’an CHEN Wei XIAO Jichang

(Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China)

Received:2013-12-29 Revised:2014-02-15 Online:2014-05-10 Published:2014-05-08
Supported by:
Thoriumbased Molten Salt Reactor

Abstract

Abstract:

Background: Possessing a series of advantages, such as low neutron absorption cross section, much lower vapor pressure and good heat transfer performance fluoride molten salts are widely used in the high-temperature hydrogen, solar storage, nuclear fuel and other energy fields. Among them, ternary mixture of LiF-NaF-KF (FLiNaK) is one of the most common candidate molten salt systems. Purpose: We aim to examine the effect of temperature, time, crucible material and fluoride reagents on the quality of the molten salt, and preliminarily master key process parameters for preparation of FLiNaK molten salt. Methods: The formation of FLiNaK molten salt was studied by a vacuum melting platform. The optional preparation conditions were obtained through the screening of melting temperature, timing, crucible material and fluorination reagent. Results: In the presence of NH4HF2, the oxygen content in FLiNaK salt could be controlled below 2×10?4. Metal ion impurities in molten salt, according to the general requirements of the quality standard for molten salt reactor, of which Be, Cu, Fe, Zr and Cd contents are less than 5×10?6. And impurities of sulfate and phosphate anions are less than 1×10?4 and 3×10?5, respectively. Conclusion: Using the present preparation method, the corrosion of furnace was greatly reduced. It was an efficient, low-cost, and safe process for the preparation of FLiNaK molten salt.

Key words: FLiNaK molten salt, Preparation, Ammonium hydrogen fluoride, Recrystallization

ZONG Guoqiang, CHEN Bo, ZHANG Long, SUN Jiahong, DONG Qun’an, CHEN Wei, XIAO Jichang. Preparation of FLiNaK molten salt[J].Nuclear Techniques, 2014, 37(05): 50604-050604.

References

[1] Delpech S, Cabet C, Slim C, Picard G S. Molten fluorides for nuclear applications[J], Materials Today, 2010,13: 34-41

[2] Waldrop M. M. Nuclear energy: Radical reactors[J], Nature, 492 (7427): 26-29

[3] Williams D F, Toth L M, Clarno K. T. Assessment of candidate molten salt coolants for the advanced high-temperature reactor (AHTR) [M], ORNL/TM-2006/12

[4] Benes O, Konings R J M. Thermodynamic properties and phase diagrams of fluoride salts for nuclear applications[J], Journal of Fluorine Chemistry, 2009,130: 22-29.

[5] 邹欣, 戴志敏, 唐忠锋. FLiNaK 熔盐高温试验回路电磁感应加热的数值模拟[J]，核技术，2013, 36 (7) 70601-070601

ZOU Xin, DAI Zhimin, TANG Zhongfeng. Numerical simulation of induction heating in FLiNaK molten salt high temperature testing loop[J], Nuclear Techniques, 2013, 36 (7) 70601-070601

[6] Khokhlov V, Korzun I, Dokutovich V, Filatov E. Heat capacity and thermal conductivity of molten ternary lithium, sodium, potassium, and zirconium fluorides mixtures[J], Journal of Nuclear Materials, 2011,410: 32-38

[7] Kondo M , Nagasaka T , Xub Q. Corrosion characteristics of reduced activation ferritic steel, JLF-1 (8.92Cr–2W) in molten salts Flibe and Flinak[J], Fusion Engineering and Design, 2009, 84:1081–1085

[8] Kondo M, Nagasaka T, Tsisar V. Corrosion of reduced activation ferritic martensitic steel JLF-1 in purified Flinak at static and flowing conditions[J], Fusion Engineering and Design, 2010, 85: 1430–1436

[9] Shaffer J H. Preparation and handling of salt mixtures for the molten salt reactor experiment, [M] ORNL4616,1-45

[10] 汪洋，唐忠锋，谢雷东等. 高温氟化盐对熔盐堆用材料的腐蚀行为研究进展[J]，化学通报，2013，76: 307-312

WANG Yang, TANG Zhongfeng, XIE Leidong, et al. The research progress of corrosion behavior of materials for molten salt reactors in high temperature molten Fluorides[J], Chemistry, 2013，76: 307-312

[11] Olson L C, Ambrosek J W, Sridharan K, et al. Materials corrosion in molten LiF-NaF-KF salt[J], Journal of Fluorine Chemistry, 2009,130: 67-73.

Preparation of FLiNaK molten salt

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 3

Metrics

Comments

Recommended 10

[1]	JIANG Bing, YAO Zeen, WEN Wei, HE Tie, ZHAO Guangyi, AN Li. Preparation of liquid scintillation sample for lithium carbonate pellet for tritium production rate measurement [J]. Nuclear Techniques, 2018, 41(9): 90503-090503.
[2]	MENG Dan, WANG Weijuan, WEN Wei, DU Yang, ZHOU Yinhang, TAN Zhaoyi, WANG Heyi. Experimental study of organically bound tritium preparation condition in plant [J]. Nuclear Techniques, 2016, 39(9): 90302-090302.
[3]	SHI Xiaqing, YU Guobing, GU Xianbao, ZHANG Yu, ZHAO Jun, CHEN Zhi, XU Xie. Test and comparison of aerosol sample preparation methods in radiation monitoring [J]. Nuclear Techniques, 2016, 39(3): 30402-030402.