Characteristic of the Pressurized Continuous Bunsen Reaction using HIx Solution

Jong Seok Kim, Chu Sik Park, Kyoung Soo Kang, Seong Uk Jeong, Won Chul Cho, Chang Hee Kim, Young Ho Kim, Ki Kwang Bae

Research output: Contribution to journalConference articlepeer-review

Abstract

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 (HI-I2-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 SO2-I2-H2O system. However, the amount of produced H2SO4 phase was too small. To solve this problem, the study was carried out by the pressurized continuous Bunsen reaction. Bunsen reactions were performed at variation of feed rate of SO2/O2 gas in 3 bar of atmosphere. Also, it was performed to check the effects of the residence time in the reservoir on the characteristics of Bunsen products. As the results, the concentration of H2SO4 and HI in Bunsen products was increased with increasing the amounts of SO2. When the residence time in the reservoir increased, the concentration of H2SO4 and HI in HIx phase was decreased by reverse Bunsen reaction.

Original languageEnglish
Article number02015
JournalMATEC Web of Conferences
Volume67
DOIs
StatePublished - 29 Jul 2016
EventInternational Symposium on Materials Application and Engineering, SMAE 2016 - Chiang Mai, Thailand
Duration: 20 Aug 201621 Aug 2016

Keywords

  • Bunsen reaction
  • Continuous reaction
  • HIx solution
  • Hydrogen production
  • Pressurized reaction
  • Sulfur-Iodine process

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