Bunsen Reaction using a HI_x Solution (HI-I₂-H₂O) with Countercurrent Flow for Sulfur-Iodine Hydrogen Production Process

¹ Department of Chemical Engineering and Applied Chemistry, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 34134, Republic of Korea
² Hydrogen Energy Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 34129, Republic of Korea

^a hskim05@cnu.ac.kr
^b phk955@cnu.ac.kr
^c cspark@kier.re.kr
^d kkbae@kier.re.kr
^e yh_kim@cnu.ac.kr
^* Corresponding author: yh_kim@cnu.ac.kr

Abstract

In the sulfur-iodine hydrogen production process, the Bunsen reaction is a crucial section because of the linkage with the H₂SO₄ and HI decomposition sections. The HI_x solution (HI-I₂-H₂O mixture) was fed to the Bunsen reaction section as a reactant from the HI decomposition section. In this study, the Bunsen reaction using the HI_x solution with countercurrent flow was performed. The production rate of HI_x phase solution increased while that of H₂SO₄ phase solution was maintained constant when increasing the flow rate of HI_x solution. As the SO₂ flow rate increased, the production rates of H₂SO₄ and HI_x phase solutions increased. The amount of resultant H₂SO₄ phase was very lower than that of resultant HI_x phase under the conditions examined in this study.