하향류식 커피박 가스화 장치 개발

Abstract

The gasification of coffee leaves, which are a type of biomass waste, was conducted on a pilot of adowndraft fixed gasification system to investigate the gasification characteristics. The experiment was performedusing 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 temperaturewas 700 °C–900 °C. However, the air flow rate changed to 0.45 Nm3/min, which was lower than the initialstarting value depending on the temperature change during the gasification process. It was concluded that coffeeleaves can be converted from biomass waste into useful synthetic gas as an alternative energy source