Variation in the Volume Ratio of HI<sub>X</sub> Phase/H<sub>2</sub>SO<sub>4</sub> Phase for Improvement of Phase Separation Efficiency in the Bunsen Reaction Section

Abstract

The H2SO4 phase and HIx phase solution produced from Bunsen reaction section in SI (Sulfur-iodine) process were supplied to the phase separator for the continuous operation of SI process. However, the separation of Bunsen products in the phase separator is difficult because an excess of HIx phase solution existed in the phase separator than the H2SO4 phase solution. Therefore, the additional supply of H2SO4 to the phase separator as the phase separation method was considered for improvement of phase separation efficiency. In this work, the variations in volume ratio and composition of each phase solution were examined after the Bunsen product mixing on the HIx phase/H2SO4 phase volume ratio. As the results, the variation in composition of products increases with increase of the HIx phase/H2SO4 phase volume ratio after mixing. It was also found that the high variations in composition and volume ratio of Bunsen products by mixing in the presence of excess HIx phase. From the results, we concluded that the phase separation method, additional supply of H2SO4 phase solution to the phase separator, is effective in Bunsen product separation when the variation in composition is little.