Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Effect of Reaction Conditions on Syngas Yield for the Preparation of Syngas from Landfill Gas

매립지가스(LFG)로부터 합성가스 제조시 반응조건에 따른 수율에 미치는 연구

  • CHO, WOOKSANG (Department of Environment and Energy, the University of Suwon) ;
  • CHOI, KEONGDON (Department of Environment and Energy, the University of Suwon) ;
  • BAEK, YOUNGSOON (Department of Environment and Energy, the University of Suwon)
  • 조욱상 (수원대학교 환경에너지공학과) ;
  • 최경돈 (수원대학교 환경에너지공학과) ;
  • 백영순 (수원대학교 환경에너지공학과)
  • Received : 2015.10.02
  • Accepted : 2015.10.30
  • Published : 2015.10.30
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Abstract

LFG (Land-Fill Gas) includes components of $CH_4$, $CO_2$, $O_2$, $N_2$, and water. The preparation of synthesis gas from LFG as a DME (Dimethyl Ether) feedstock was studied by methane reforming of $CO_2$, $O_2$ and steam over $NiO-MgO-CeO_2/Al_2O_3$ catalyst. Our experiments were performed to investigate the effects of methane conversion and syngas yield on the amount of LFG components over $NiO-MgO-CeO_2/Al_2O_3$ catalyst. Results were obtained through the methan reforming experiments at the temperature of $900^{\circ}C$ and GHSV of 8,800. The results were as following; it has generally shown that syngas yield increase with the increase of oxygen and steam amounts and then decrease. Highly methane conversion of above 98% and syngas yield of approximately 60% were obtained in the feed of gas composition flow-rate of 243ml/min of $CH_4$, 241ml/min of $CO_2$, 195ml/min of $O_2$, 48ml/min of $N_2$, and 450ml/min of steam, respectively, under reactor pressure of 1 bar for 200 hrs of reaction time. Also, it was shown that catalyst deactivation by coke formation was reduced by excessively adding oxygen and steam as an oxidizer of the methane reforming.

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References

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