Abstract—Vapor-liquid equilibrium for the binary system of zirconium tetrachloride and hafnium tetrachloride over a pressure range from 23 to 50 bars, and a temperature range from 440oC and 490oC have been measured. This method was implemented based on the bubble point determination of binary mixture. The obtained experimental data were correlated with the Peng-Robinson equation of state. It was found that the Peng-Robinson equation of state provided satisfactory prediction for the binary system. Based on the regressed values, high pressure distillation technology has been investigated to produce hafnium-free zirconium tetrachloride.
Index Terms—Zirconium tetrachloride, hafnium tetrachloride, bubble point pressure, Peng-Robinson,distillation.
Moonyong Lee is with the School of Chemical Engineering, Yeungnam University (e-mail: mynlee@yu.ac.kr).
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Cite: Le Quang Minh, Young Mi Jung, Gyeong Min Kim, and Moonyong Lee, "Measurement of Bubble Point Pressures of Zirconium and Hafnium Tetrachloride Mixture for Zirconium Tetrachloride Purification Process," International Journal of Chemical Engineering and Applications vol. 3, no. 6, pp. 427-429, 2012.
