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

Title & Authors
Effects of Solubility of SO2 Gas on Continuous Bunsen Reaction using HIx Solution
KIM, JONGSEOK; PARK, CHUSIK; KANG, KYOUNGSOO; JEONG, SEONGUK; CHO, WON CHUL; KIM, YOUNG HO; BAE, KI KWANG;

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