음식물 폐기물의 연료화를 위한 Torrefaction 반응 특성 연구

In this study, a lab-scale experiment was conducted to derive the optimal torrefaction conditions for upscaling food waste torrefaction to generate solid fuel. Basic characteristic analyses (a proximate analysis, elemental analysis, calorific value and thermogravimetric analysis) were conducted and further used to develop experimental conditions during upscaling. Based on the characteristics analysis, the experiments were conducted by varying the heating rates by 5, 10 and 15℃/min, varying the torrefaction temperature from 200 to 550℃ at an interval of 50℃ and varying the torrefaction residence time from 0 to 50 minutes at an interval of 10 minutes. The heating rates were varied and only carried out for the combustion experiments of the torrefied product at a temperature range of 50 to 800℃. The results show that the optimal torrefaction temperature and residence time of food waste torrefaction were 250 ~ 350℃ and 30 ~ 40 minutes, respectively.