Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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Characteristics of LPG Fuel Reforming Utilizing Plasma Reformer

LPG 연료의 플라즈마 개질 특성연구

  • Received : 2012.08.22
  • Accepted : 2012.12.18
  • Published : 2012.12.31
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Abstract

In this study, characteristics of reforming process of Automotive LPG fuel using plasma reactor are investigated. Because plasma reformer technology has advantages of a fast start-up and wide fuel/oxidizer ratio of operation, and reactor size is smaller and more simple compared to typical combustor and catalytic reactor, plasma reforming is suitable to the on-board vehicle reformer. To evaluate the characteristics of the reforming process, parametric effect of $O_2$/C ratio, reactant flow rate and plasma power on the process were investigated. In the test of varying $O_2$/C ratio from partial oxidation stoichiometry to combustion stoichiometry, conversion of LPG was increased but selectivity of $H_2$ decreased. The optimum condition of $O_2$/C ratio for the highest $H_2$ yield was determined to be 0.8~0.9 for 20~50 lpm. The result can be a guide to map optimal condition of reforming process.

본 연구에서는 플라즈마 반응기를 이용한 자동차용 LPG 연료의 개질 특성에 대해서 실험하였다. 실험에서 사용된 플라즈마 반응기술은 종전의 촉매반응기술에 비해서 빠른 기동시간 및 연소기 부하변동 응답성, 단순하고 소형화가 가능한 장점을 가지고 있어 차량의 온-보드형 개질에 적합하다. 본 개질 반응의 특성을 평가하기 위해 플라즈마 반응기로 공급되는 $O_2$/C 비와 공급되는 공기와 LPG의 총 유량 및 플라즈마 공급전력을 주요 변수로 실험하였다. 공급되는 전력이 일정할 때, $O_2$/C 비 변화 실험에서는 완전산화 조건으로 갈수록 LPG 전환율은 증가하지만 수소의 선택도는 감소되었다. 높은 수소 선택도와 수율을 동시에 만족시키는 $O_2$/C 비는 20~50lpm 조건에서 0.8~0.9 이었으며, 총 유량이 증가할수록 LPG 전환율과 수소 수율이 감소하는 경향을 나타내었다.

Keywords

References

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