Waste management has become a very crucial issue in many countries, due to the ever-increasing amount of waste material. Recent studies have focused on an innovative technology, gasification that has been demonstrated to be one of the most effective and environmentally friendly methods of solid waste treatment and energy utilization. In this study, a gasification process has been investigated systematically by numerical simulation, in order to obtain optimum design conditions for a commercial-scale facility of an updraft fixed-bed gasifier. Turbulent flow field was calculated with the incorporation of the proper flow model for turbulence and inertial resistance for the porous region of SRF loading. The calculated temperature and pressure drop (ΔP) at exit of the gasifier were in good agreement with measured values. Next, a detailed thermochemical model was employed to estimate the syngas composition by gasification. Results showed that a better plant solution depends on both the air-fuel ratio (AFR) and the steam and carbon mole ratio (S/C). In this study, the gasification efficiency was best at an AFR of 0.25-0.3 and an S/C below 0.5.

• 신미수(충남대학교 환경공학과) | Misoo Shin (Department of Environmental Engineering, Chungnam National University)
• 박민정(충남대학교 환경공학과) | Minjeong Park (Department of Environmental Engineering, Chungnam National University)
• 김용주(충남대학교 환경공학과) | Yongju Kim (Department of Environmental Engineering, Chungnam National University)
• 장동순(충남대학교 환경공학과) | Dongsoon Jang (Department of Environmental Engineering, Chungnam National University) Corresponding author