유동상 반응로 조건에서 목재와 RDF 부분 산화의 영향
Effect of Partial Oxidation of Wood and RDF in a Fluidized Bed
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Gasification characteristics in the fluidized bed reactor are essential for the design of a gasification furnace to optimize the operation condition. Moisture content of the solid fuel is one of the important factors to influence directly the gasification characteristics. So it is necessary to investigate the effect of moisture content of solid fuel in partial oxidation condition. Gasification characteristics are investigated with results from thermogravimetric analyzer and lab-scale fluidized bed reactor for wood and RDF samples along with changing moisture contents. Additionally lab-scale fluidized bed reactor was run continuously and gas concentrations at the exit were measured. It is observed that the rate of reaction in partial oxidation condition is between the results from the combustion environment and from the inert condition. Moisture content in a particle slows down the heating rate of a particle. So, reaction is delayed by the moisture content. However, RDF samples those are easy to break-up don’t show the effect of moisture content. The result of continuous operation condition shows that proper moisture content promotes gasification because steam from the particles helps gasification of the solid fuel. A simulation to predict the syn-gas composition was conducted by the Aspen Plus process simulator. The cold gas efficiency of the experiment was compared with results from the simulation.
Abstract
Gasification characteristics in the fluidized bed reactor are essential for the design of a gasification furnace to optimize the operation condition. Moisture content of the solid fuel is one of the important factors to influence directly the gasification characteristics. So it is necessary to investigate the effect of moisture content of solid fuel in partial oxidation condition. Gasification characteristics are investigated with results from thermogravimetric analyzer and lab-scale fluidized bed reactor for wood and RDF samples along with changing moisture contents. Additionally lab-scale fluidized bed reactor was run continuously and gas concentrations at the exit were measured. It is observed that the rate of reaction in partial oxidation condition is between the results from the combustion environment and from the inert condition. Moisture content in a particle slows down the heating rate of a particle. So, reaction is delayed by the moisture content. However, RDF samples those are easy to break-up don’t show the effect of moisture content. The result of continuous operation condition shows that proper moisture content promotes gasification because steam from the particles helps gasification of the solid fuel. A simulation to predict the syn-gas composition was conducted by the Aspen Plus process simulator. The cold gas efficiency of the experiment was compared with results from the simulation.
참고문헌 (14)
- 전해수, "폐기물 유동층 소각" (1993), 동화기술
- 한국과학기술원 열공학 연구실, "저공해 폐기물 소각" (2000), 한국과학기술원 열공학 연구실
- 양원, "하수 슬러지의 연료특성 파악을 위한 기초분석", 대한환경공학회지, 23(1), pp.51~59 (2001)
- T. Ogada, "Combustion characteristics of wet sludge in a fluidized bed", Fuel, 75(5), pp.617~626 (1996)
- 최진환, "고체 폐기물 연료의 유동상 연소-연소특성 및 운전인자 변화", 한국폐기물학회지, 18(3), pp.1~9 (2001)
- Ni, M.-j., "Study on pyrolysis and gasification of wood in MSW", Journal of environmental sciences (China), 18(2), pp.407~415 (2006)
- 김재호, "폐기물 가스화의 열역학적 냉가스 효율 분석", 한국폐기물학회지, 20(2), pp.193~203 (2003), 한국폐기물학회
- Bacon, D. W., "Modeling of fluidized bed wood gasifiers, in : Fundamentals of thermochemical biomass conversion" (1985), Elsevier Applied Science Publishers
- Double, J. M., "Computer modeling of fluidized bed gasification, in : Pyrobsis and gasification" (1989), Elsevier Applied Science
- Mansaray, K. G., "Mathematical Modeling of a Fluidized Bed Rice Husk Gasifier: Part I-Model Development", Energy sources, 22(1), pp.83~98 (2000)
- Li, X.T., "Biomass gasification in a circulating fluidized bed", Biomass & bioenergy, 26(2), pp.171~193 (2004)
- Jose Corella, "Modeling circulating fluidized bed biomass gasifiers. A pseudo-rigorous model for stationary state", Fuel Processing Technology, 86(9), pp.1021~1053 (2005)
- 최진환, "유동층 연소로에서 고체 폐기물 연료의 열분해 및 연소 특성 비교", 화학공학, 40(4), pp.523~528 (2002), 한국화학공학회
- 이민도, "가스화 용융로의 설계 인자 분석", 석사, pp.2006