Hot corrosion resistance of four graphite material in molten Solar Salt

Abstract:

Solar Salt is the best hot transfer medium molten salt of solar thermal power generation.In order to study the hot corrosion behavior of four graphite is in the molten Solar Salt.The graphite immersed equipped with molten salt crucible placed in a muffle furnace,each period of time remove the sample and weight the weight gain until the sample is completely destroyed.The destruction forming of graphite is analyzed by XRD, SEM and OP.The study found that the order of hot resistant corrosion of molten Solar Salt of four graphite materials are the fine structuregraphite,isostatic graphite,9# graphite and cold pressing graphite.The principal factors can affect hot corrosion resistant of graphite is the graphitization degree. The hot corrosion resistance of the graphite can be enhanced with the increase of graphitization degree.

• Periodical: Advanced Materials Research (Volumes 887-888)
• Pages: 479-483
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.887-888.479
• Online since: February 2014
• Authors: Yang Tao Xu*, Wan Ping Wang, Tian Dong Xia, Bao Lin Jia, Gui Lan Zhang
• Keywords: Graphite, Graphitization Degree, Hot Corrosion, Molten Solar Salt

References

[1] Shen Xiangyang, Peng Qiang, Yang Jianping. Current Status of Hot Transfer Fluid Researched for Concentrating Solar Power[J]. Guangdong Chemical Industry, 2011，38(8): 83-85.

[2] W E Kirst, W M Nagle, J B Castner. A new hot transfer medium for high temperatures[J]. Transactions of the American Institute of Chemical Engineers, 1940, 36: 371-376.

[3] R W Bradshaw, D E Meeker. High-temperature stability of ternary nitrate molten salts for solar thermal energy systems[J]. Solar Energy Materials, 1990, 21(1): 51-60.

DOI: 10.1016/0165-1633(90)90042-y

[4] M Kamimoto, T Tanaka. Investigation of nitrate salts for solar latent hot storage[J]. Solar Energy, 1980, 24(6): 581-587.

DOI: 10.1016/0038-092x(80)90357-6

[5] R Ferri, Mazzei A C D. Molten salt mixture properties in RELAP5 code for thermodynamic solar applications[J]. International Journal of Thermal Sciences, 2008, 47(12): 1676-1687.

DOI: 10.1016/j.ijthermalsci.2008.01.007

[6] D Kearney, B Kelly, U Herrmann, et al. Engineering aspects of a molten salt hot transfer fluid in a trough solar field[J]. Energy, 29(5-6): 861-870.

DOI: 10.1016/s0360-5442(03)00191-9

[7] Peng Q, Ding J, Wei X. The preparation and properties of multi-component molten salts[J]. Applied Energy, 2010, 87(9): 2812-2817.

DOI: 10.1016/j.apenergy.2009.06.022

[8] Peng Qiang, Wei Xiaolan. High temperature thermal stability of molten salts materials[J]. International Journal of Energy Research. 2008, 32(12): 1164-1174.

DOI: 10.1002/er.1453

[9] Wen Yuliang, Ding Jing. Transport Characteristic and Its Enhancement Mechanism for Transverse Ridged Tubes with Molten Salts Materials in Receiver[D] Guangdong: The South China University of Technology PhD Dissertation, (2010).

[10] Wu Yuting, Zhu Jiankun, Zhang Lina, et al. Preparation and Experimental Study on High Temperature Molten Salt[J]. Journal of Beijing University of Technology, 2007，33(1): 62-66.

[11] Shen Xiangyang, Ding Jing, Peng Qiang, et al. Application of High Temperature Molten Salt to Solar Thermal Power[J]. Guangdong Chemical Industry, 2007，34(11): 49-52.

[12] E James, Pacheco. Demonstration of solar generated electricity on demand: The Solar Two Project[J]. Journal of Solar Energy Engineering, 2001, 123 (5): 124-127.

DOI: 10.1115/1.1341876

[13] Zhang Fuqin, Huang Qizhong, Gong Qianming, et al. Effect of graphitization degree on the mechanical properties of C/C composites[J]. Journal of Central South University of Technology (Natural Science),. 2001, 32(3): 289-293.

[14] Huang Sixin, He Yongkang, Ma Liqian. Production, applications and domestic market analysis for isostatically pressed graphites[J]. Carbon Techniques, 2010，29(5): 32-37.

[15] Hu Xiaojun, Xue Xianxin, Duan Peining, et al. Effect of graphitization degree on properties of self baking carbon block[J]. The Chinese Journal of Nonferrous Metals, 1998，8(suppl. 2): 67-72.