Characteristics of RDF Char Combustion in a Bubbling Fluidized Bed

기포 유동층 내에서 RDF 촤의 연소 특성

  • Kang, Seong-Wan (School of Environmental Engineering, University of Seoul) ;
  • Kwak, Yeon-Ho (Environmental Research Team, R&D Institute, Kolon E&C) ;
  • Cheon, Kyoung-Ho (Environmental Research Team, R&D Institute, Kolon E&C) ;
  • Park, Sung Hoon (Department of Environmental Engineering, Sunchon National University) ;
  • Jeon, Jong-Ki (Department of Chemical Engineering, Kongju National University) ;
  • Park, Young-Kwon (School of Environmental Engineering, University of Seoul)
  • 강성완 (서울시립대학교 환경공학부) ;
  • 곽연호 (코오롱 건설 기술연구센터 환경기술연구소) ;
  • 천경호 (코오롱 건설 기술연구센터 환경기술연구소) ;
  • 박성훈 (순천대학교 환경공학과) ;
  • 전종기 (공주대학교 화학공학과) ;
  • 박영권 (서울시립대학교 환경공학부)
  • Received : 2011.05.24
  • Accepted : 2011.06.16
  • Published : 2011.08.10

Abstract

The feasibility of applications of the char obtained from a gasification process of municipal-waste refuse derived fuel (RDF) as an auxiliary fuel was evaluated by combustion experiments. The higher heating value of the RDF char was 3000~4000 kcal/kg and its chlorine content was below the standard requirement demonstrating its potential as an auxiliary fuel. In the combustion exhaust gas, the maximum $NO_x$ and $SO_2$ concentrations were 240 ppm and 223 ppm, respectively. If an aftertreatment is applied, it is possible to control their concentrations low enough to meet the air pollutant emission standard. The HCl concentration was relatively high indicating that a care should be taken for HCl emission from the combustion of RDF. Based on the temperature distribution within the reactor, the concentration change of $O_2$ and $CO_2$, and the amount and the loss on ignition of solid residue, it was inferred that the combustion reaction was the most reliable when the excess air ratio of 1.3 was used.

Acknowledgement

Grant : Center for Waste Eco-Energy and Non-CO2 Greenhouse Gases (CWEG)

Supported by : Ministry of Environment

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