Characteristics of Hydrogen and Carbon Production in Tubluar Reactor by Thermal Decomposition of Methane

Methane의 고온열분해에 의한 Tubluar reactor에서의 수소 및 탄소 생성 특성

  • Lee, Byung Gwon (Environment & Process Technology Division, Korea Institute of Science & Technology) ;
  • Lim, Jong Sung (Environment & Process Technology Division, Korea Institute of Science & Technology) ;
  • Choi, Dae Ki (Environment & Process Technology Division, Korea Institute of Science & Technology) ;
  • Park, Jeong Kun (Environment & Process Technology Division, Korea Institute of Science & Technology) ;
  • Lee, Young Whan (Environment & Process Technology Division, Korea Institute of Science & Technology) ;
  • Baek, Young Soon (LNG Technology Research Center, Korea Gas Corporation)
  • 임병권 (한국과학기술연구원 환경 . 공정연구부) ;
  • 임종성 (한국과학기술연구원 환경 . 공정연구부) ;
  • 최대기 (한국과학기술연구원 환경 . 공정연구부) ;
  • 박정근 (한국과학기술연구원 환경 . 공정연구부) ;
  • 이영환 (한국과학기술연구원 환경 . 공정연구부) ;
  • 백영순 (한국가스공사 LNG기술연구센터)
  • Published : 2002.06.15

Abstract

This work was focused on the thermal decomposition of methane into hydrogen and carbon black without emitting carbon dioxide. Extensive experimental investigation on the thermal decomposition of methane has been carried out using a continuous flow reaction system with tubular reactor. The experiments were conducted at the atmospheric pressure condition in the wide range of temperature ($950-1150^{\circ}C$) and flow rate (250 - 1500 ml/min) in order to study their dependency on hydrogen yield. During the experiments the carbon black was successfully recovered as an useful product. Undesirable pyrocarbon was also formed as solid film, which was deposited on the inside surface of tubular reactor. The film of pyrocarbon in the reactor wall became thicker and thicker, finally blocking the reactor. The design of an efficient reactor which can effectively suppress the formation of pyrocarbon was thought to be one of the most important subjects in the thermal cracking of methane.

Keywords

Thermal decomposition;Methane;Hydrogen;Carbon black;Pyrocarbon

Acknowledgement

Supported by : 에너지관리공단

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