HIx 용액을 이용한 연속식 분젠 반응에 미치는 SO2용해도의 영향

The Sulfur-Iodine thermochemical hydrogen production process (SI process) consists of the Bunsen reaction section, the H2SO4 decomposition section, and the HI decomposition section. The HIx solution (I2-HI-H2O) could be recycled to Bunsen reaction section from the HI decomposition section in the operation of the integrated SI process. The phase separation characteristic of the Bunsen reaction using the HIx solution was similar to that of I2-H2O-SO2 system. On the other hands, the amount of produced H2SO4 phase was small. To investigate the effects of SO2 solubility on Bunsen reaction, the continuous Bunsen reaction was performed at variation of the amounts of SO2 gas. Also, it was carried out to make sure of the effects of partial pressure of SO2 in the condition of 3bar of SO2-O2 atmosphere. As the results, the characteristic of Bunsen reaction was improved with increasing the amounts and solubility of SO2 gas. The concentration of Bunsen products was changed by reverse Bunsen reaction and evaporation of HI after 12 h.