한국연소학회지 (Journal of the Korean Society of Combustion)

  • 제16권4호
  • /
  • Pages.8-15
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  • 2011
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  • 1226-0959(pISSN)
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  • 2466-2089(eISSN)
한국연소학회 (The Korean Society of Combustion)
권호 표지

슬러지 유동층 소각로의 프리보드 내 가스 혼합 및 반응 특성에 대한 실험 및 해석적 연구

Experimental and Numerical Study on the Gas Mixing and Reaction in the Freeboard of a Fluidized Bed Incinerator for Sludge Treatment

  • 김영민 (국민대학교 대학원 기계공학과) ;
  • 신동훈 (국민대학교 대학원 기계공학과) ;
  • 황승식 (국민대학교 기계시스템공학부)
  • 투고 : 2011.08.02
  • 심사 : 2012.01.06
  • 발행 : 2011.12.30
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초록

The present study investigates the combustion phenomena in a sludge incinerator using experimental and numerical method. The temperature and gas concentration were measured at 33 points during operation of the incinerator in order to assess the mixing and combustion characteristics. Numerical simulation was also carried out using a commercial CFD code. Simplified inlet conditions were introduced in oder to predict the bulk solid combustion and the diffusion of the volatile matter released by pyrolysis of sludge. The experimental results showed that the combustion process is extremely inhomogeneous. Large variations were observed in the temperature and gas concentrations in the freeboard of the incinerator due to poor mixing performance between the air and the combustibles, which is caused by massive and bulk generation of volatile matter by fast pyrolysis of sludge particles. The boundary condition of the CFD simulation was found effective in predicting the poor mixing and combustion performance of the reactor.

키워드

참고문헌

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