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Effects of Solubility of SO2 Gas on Continuous Bunsen Reaction using HIx Solution

HIx 용액을 이용한 연속식 분젠 반응에 미치는 SO2용해도의 영향

  • Received : 2016.02.01
  • Accepted : 2016.02.28
  • Published : 2016.02.29

Abstract

The Sulfur-Iodine thermochemical hydrogen production process (SI process) consists of the Bunsen reaction section, the $H_2SO_4$ decomposition section, and the HI decomposition section. The $HI_x$ solution ($I_2-HI-H_2O$) 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 $HI_x$ solution was similar to that of $I_2-H_2O-SO_2$ system. On the other hands, the amount of produced $H_2SO_4$ phase was small. To investigate the effects of $SO_2$ solubility on Bunsen reaction, the continuous Bunsen reaction was performed at variation of the amounts of $SO_2$ gas. Also, it was carried out to make sure of the effects of partial pressure of $SO_2$ in the condition of 3bar of $SO_2-O_2$ atmosphere. As the results, the characteristic of Bunsen reaction was improved with increasing the amounts and solubility of $SO_2$ gas. The concentration of Bunsen products was changed by reverse Bunsen reaction and evaporation of HI after 12 h.

Keywords

Hydrogen production;SI process;Bunsen reaction;HIx solution;Continuous reaction;Pressurized reaction

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Acknowledgement

Supported by : 한국연구재단, 한국에너지기술연구원, 한국에너지기술평가원(KETEP)