황-요오드 공정용 직접접촉 삼산화황 분해반응기내 열전달 특성에 관한 수치적 연구

Numerical Study on Heat Transfer Characteristics in a directly Heated $SO_3$ Decomposer for the Sulfur-Iodine process

  • 최재혁 (서울대학교 기계항공공학부 기계항공공학시스템 창의설계인력양성사업단) ;
  • 신영준 (한국원자력연구소 원자력수소사업추진반) ;
  • 탁남일 (한국원자력연구소 원자력수소사업추진반) ;
  • 이기영 (한국원자력연구소 원자력수소사업추진반) ;
  • 장종화 (한국원자력연구소 원자력수소사업추진반) ;
  • 정석호 (서울대학교 기계항공공학부)
  • 발행 : 2007.05.30

초록

A directly heated $SO_3$ decomposer for the sulfur-iodine and hybrid-sulfur processes has been introduced and analyzed by using a computational fluid dynamics code(CFD) with the CFX 5.7.1. The use of a directly heated decomposition reactor in conjunction with a VHTR allows higher decomposition reactor operating temperature. However, the thermochemical and hybrid hydrogen production processes accompanied with the high temperature and strongly corrosive operating conditions basically have material problems. In order to resolve these problems, we carried out the development of a structural material and equipment design technologies. The results show that the maximum temperature of the structural material (RA330) could be maintained at 800$^{\circ}C$ or less. Also, it can be seen that the mean temperature of the reaction region packed with catalysts in the $SO_3$ decomposition reactor could satisfy the temperature condition of around 850 $^{\circ}C$ which is the target temperature in this study.

키워드