5-3.代替流動媒体を用いた籾殻の流動層燃焼((1)微粉炭・流動層,Session 5 燃焼・熱利用)

概要

論文の詳細を見る
Rice husk was burned in a bench-scale fluidized bed combustor at 1123 K. Silica sand was employed as conventional bed material. As alternative bed materials, olivine sand (mMg2SiO_4 nFe_2SiO_4) and a kind of porous alumina were employed. Effect of bed material on emissions of unburned gaseous components and NOx were measured. Unburned gas emission was suppressed by employing porous alumina as bed material. NOx emission from the alumina bed was also suppressed in comparison to the sand bed. N_2O emission was nearly negligible (less than 10 ppm) for both bed materials. During combustion in the sand bed and olivine sand bed, increase in pressure drop across the bed followed by sudden temperature rise was observed. Agglomerate was found in the bed material after the experiments. For the porous alumina bed, such agglomeration trouble did not occur. As conclusion, the present porous alumina was effective for both reduction of pollutants emissions and stable operation.
一般社団法人日本エネルギー学会の論文
2005-08-04