화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
HWAHAK KONGHAK, Vol.38, No.1, 111-116, February, 2000
Export Citation
중온용 탈황제 개발을 위한 Zinc Titanate 제조 및 반응특성
A Study of Advanced Zinc Titanate sorbent for Mid-Temperature Desulfurization
임창진, 차영권, 박노국, 류시옥, 이태진†, 김재창1
  • 영남대학교 응용화학공학부, 경산 712-749
  • 1경북대학교 화학공학과, 대구 702-701
Chang-Jin Lim, Young-Kwon Cha, No-Kuk Park, Si-Ok Ryu, Tae-Jin Lee†, and Jae-Chang Kim1
  • School of Chemical Engineering and Technology, Yeungnam University, Kyongsan 712-749, Korea
  • 1Department of Chemical Engineering, Kyungpook National University, Taegu 702-701, Korea
E-mail:
초록
석탄가스 중의 황화수소를 제거하기 위하여 zinc titanate 탈황제를 제조하고 내마모성 및 반응특성을 연구하였다. 중온조건의 탈황공정에 효과적인 탈황제를 제조하기 위하여 첨가제로 Co3O4와 NiO를 사용하였고 내마모성을 향상시키기 위하여 MoO3를 첨가하였다. 제조한 탈황제의 내마모도를 측정하였고, 탈황반응을 650℃의 고온과 480℃의 중온에서 수행하여 황 흡수능력을 비교 검토하였으며 480℃에서 50-cycle 장기연속반응을 수행하여 황 흡수능력을 관찰하였다. 코발트, 니켈산화물을 함유한 zinc titanate 탈황제가 480℃에서도 고온탈황반응(650℃)에서의 황 흡수능력과 유사한 결과를 보였으며 50-cycle 동안 황 흡수능력의 감소는 더 적은 것으로 나타났다. 그리고 황화된 탈황제를 580℃에서 재생시켰으며 장기연속 반응 후 탈황제의 물성변화를 조사하였다.
Zinc titanate sorbents to remove H2S in the coal gasifier gas were formulated and their attrition resistances and reactivities were studied through the multicycle operation in a laboratory scale. In the preparation of sorbents Co3O4 and NiO were added to the formulation for the development of the more efficient sorbents at the mid-temperature operations as well as MoO3 was added for the improvements in the sorbent attrition resistance. Attrition test for prepared sorbents were performed by utilizing the ASTM air jet sttrition method. The desulfurization tests for the new formulation were also carried out at 480℃ to make a comparison between the sulfur capacities of the new sorbents and those of the first generation of sorbents developed for high temperature operating condition. The 50-cycles of the sulfidation and regeneration for a superior formulation, which is selected based on the attrition tests, were performed at 480℃ to investigate its chemical and physical properties. The result showed that the desulfurization efficiency of the selected sorbents were regenerated at 580℃ and investigated the changes of the physical properties of the sorbents after the multiple cycle.
Keywords:Zinc Titanate;IGCC;Desulfurization
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