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조은만(En-man Cho),김봉환(Bong-hwan Kim),김동건(Dong-gun Kim),정원훈(Won-hoon Jung),이상문(Sang-moon Lee),장영희(Young-hee Jang) 한국기계가공학회 2021 한국기계가공학회지 Vol.20 No.11
The gasification of coffee leaves, which are a type of biomass waste, was conducted on a pilot of a downdraft fixed gasification system to investigate the gasification characteristics. The experiment was performed using a coffee leaf pellet size and a batch-type gasification system consisting of a gasifier, cooling cyclone, scrubber, and bag filter. It was found that the air-to-fuel ratio was 2.32 Nm3/kg·h and the reaction temperature was 700 °C–900 °C. However, the air flow rate changed to 0.45 Nm3/min, which was lower than the initial starting value depending on the temperature change during the gasification process. It was concluded that coffee leaves can be converted from biomass waste into useful synthetic gas as an alternative energy source.