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- In relation to this article, we declare that there is no conflict of interest.
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Received July 17, 2009
Accepted September 3, 2009
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회분식 유동층반응기에서 세 종류 아연계 탈황제의 석탄가스 환원도, 수분함량, 황화수소함량에 따른 반응성 평가
Analysis of Reactivity of Zn-Based Desulfurization Sorbents for Reducing Power, Water Vapor Content and H2S Content of the Coal Gas in a Batch-Type Fluidized-Bed Reactor
한국에너지기술연구원 온실가스연구단, 305-343, 대전광역시 유성구 가정로 102 1서울산업대학교 신에너지공학과, 139-743, 서울 노원구 공릉길 138
Greenhouse Gas Research Center, Korea Institute of Energy Research, 102 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Korea 1The Graduate School of Energy & Environment, Seoul National University of Technology, 138 Gongreung-gil, Nowon-gu, Seoul 139-743, Korea
Korean Chemical Engineering Research, December 2009, 47(6), 710-714(5), NONE Epub 6 January 2010
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Abstract
본 연구에서는 석탄가스의 환원도와 석탄가스에 함유된 H2O/H2S 농도변화에 따른 세 가지 종류의 아연계 탈황제의 반응성능을 회분식 유동층반응기에서 분석하였다. 가스화에서 생성되는 가스의 조성은 환원도가 각각 다른 KRW(Kellogg-Rust-Westinghouse) 공기이용 가스 조성, Shell 산소이용 가스 조성, 고등기술연구원의 가스 조성을 기준으로 모사가스를 이용하여 입구의 H2O와 H2S 농도를 변화시켜 실험을 수행하였다. H2O의 농도는 5부터 30%까지 H2S의 농도는 0.5에서 2%로 변화시켜 탈황성능을 분석하였다. 실험 결과 H2O의 농도가 증가할수록 탈황성능이 감소하고 입구의 H2S 농도가 증가할수록 탈황반응기 후단의 H2S 농도 역시 증가하였다. 모든 조건에서 환원도에 따른 탈황성능 변화는 없었으며 탈황성능은 최저 99.5%로 건식탈황제를 이용하여 99% 이상의 H2S 제거 성능을 보이는 것을 확인하였다.
In this study, we analyzed the desulfurization performance of Zn-based dry sorbents according to the reducing power, water vapor content and H2S inlet concentration of coal gas in a batch-type fluidized-bed reactor. We used three different coal gas composition with different reducing power such as KRW air-blown coal gas, Shell oxygenblown coal gas and IAE coal gas. The experiments were performed by changing the inlet concentration of water vapor and H2S in a coal gas. Water vapor content was varied from 5% to 30% and H2S inlet concentration from 0.5% to 2.0%. As both the water vapor content and H2S inlet concentration increased, desulfurization performance of Zn-based sorbents decreased regardless of the reducing power of the coal gas. The minimum desuflurization performance was, however, above 99.5% for all experimental conditions, which implied that Zn-based dry sorbents could be used to remove H2S up to 99%.
Keywords
References
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