Combustion experiments for biomass fuel with a pilot scale combustion furnace

摘要

This project researches the way that unutilized biomass such as high-moisture swine excrement and low quality wood (cobia) charcoal is effectively transformed into heat energy. This combustion system is composed of the fixed-bed combustion furnace, the preliminary drying machine of rotary kiln type, the heat exchanger, the boiler and etc. As these two biomass resources have very different combustion speeds, it is necessary to make these suitable combination for fuel. At first, the "kneaded fuel" in which the swine excrement is kneaded into the charcoal dust, is dried in the drying machine. Then the "mixed fuel" in which the kneaded fuel is mixed with the granular wood charcoal, is burned in the combustion furnace. The self-sustained combustion is succeeded for the mixed fuel that the weight ratio of the swine excrement to the wood charcoal is 60:40. This results show that the swine excrement can be burned.