Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Removal of Sulfur Compounds from Anaerobic Digestion Gas

혐기성 소화 가스로부터 황화합물의 제거

  • Choi, Do-Young (Energy & Environment Research Center, Korea Institute of Science and Technology) ;
  • Jang, Seong-Cheol (Energy & Environment Research Center, Korea Institute of Science and Technology) ;
  • Ahn, Byoung-Sung (Energy & Environment Research Center, Korea Institute of Science and Technology) ;
  • Choi, Dae-Ki (Energy & Environment Research Center, Korea Institute of Science and Technology)
  • 최도영 (한국과학기술연구원 에너지환경연구본부) ;
  • 장성철 (한국과학기술연구원 에너지환경연구본부) ;
  • 안병성 (한국과학기술연구원 에너지환경연구본부) ;
  • 최대기 (한국과학기술연구원 에너지환경연구본부)
  • Received : 2007.08.06
  • Accepted : 2007.11.01
  • Published : 2008.02.10
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Abstract

In hydrogen production for fuel cell by reforming ADG, sulfur compounds, odorant in ADG, are detrimental to reforming catalyst and fuel cell electrodes. We prepared alkali metal impregnated activated carbon to remove sulfur compounds in ADG by adsorption. The sulfur breakthrough adsorption capacity was changed depending on the oxygen concentration and relative humidity. Oxygen 0.2 vol% and RH 90% showed the highest sulfur breakthrough capacity. Adsorption characteristics of $H_2S$ on KI impregnated activated carbon were evaluated using dynamic adsorption method in a fixed bed. Based on the results, adsorption tower was designed and field-tested.

혐기성소화가스(ADG)를 원료로 수소를 제조하여 연료전지에 활용할 경우 ADG에 포함된 황화합물이 개질기의 촉매와 연료전지의 전극에 독으로 작용하므로 금속이온이 담지된 활성탄을 이용하여 황화합물을 제거하였다. 수분과 산소농도에 따라 고정층 흡착량이 변화하였으며, 산소 0.2 vol%, RH 90% 이상일 때 가장 높은 흡착량을 나타내었다. 본 연구에서는 KI 첨착한 활성탄에서 황화합물의 흡착특성을 고정층에서 동특성 실험을 통해 관찰하고 그 결과를 기준으로 흡착탑을 설계 제작 현장실험을 실시하였다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

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