P-02 発熱反応をともなう竹粉末のトレファクションにおける熱伝導およびガス発生(固形燃料,Poster Session 1)

抄録

The time courses of temperature in the bamboo packed bed and generated gas flow rate during pyrolysis have been investigated. Initial porosity in the bed changed from 0.85 for D_p < 0.50 mm to 0.94 for 0.84 mm < D_p (particle size) < 1.68 mm. The heating rate in the bed for 0.84 mm < D_p < 1.68 mm was greater than that for D_p < 0.50 mm because the thermal diffusivity could increase with the particle size of the packed bed. The temperature increased due to the exothermic chemical reaction was detected. The exothermic chemical reaction for 0.84 mm < D_p < 1.68 mm could generated faster than that for D_p < 0.50 mm. The generated gas flow rate had a maximum value. The larger particle size had the larger maximum gas flow rate due to the higher temperature in the packed bed. The gas flow rates decreased with time after the maximum value for 0.50 mm < D_p < 0.84 mm and 0.84 mm < D_p < 1.68 mm while the flow rate had almost constant value due to temperature increment by exothermic chemical reaction for D_p < 0.50 mm.