【摘要】 以鼓泡流化床为中试反应装置、木屑为原料,试验研究布风板开孔率、床料粒径、床料高度、最小流化速度以及气化介质等对气化结果的影响。结果表明:孔径和开孔率分别为Ф2 mm和0.50%的布风板布风效果较好;床料粒径为0.18~0.25 mm的石英砂,床料高度为140 mm时床内流化效果较理想;最小流化速度受床料粒径和升温速率影响;初步试验测得,富氧气化比例为50%时热值可达9.6 MJ/m~3。更多还原

【Abstract】 The pilot scale experiment of oxygen-rich sawdust gasification in a bubbling fluidized bed was carried out.The influence of the different aperture ratio of air distribution plate, particle size of bed material, height of bed material,minimum fluidization velocity and gasification medium on gasification result was studied. The results show that the winddistribution effect of the air distribution plate with aperture of Φ2 mm and 0.5% aperture ratio is better; the fluidizationeffect with particle size of bed material of 0.18-0.25 mm quartz sand and height of bed material of 140 mm is more ideal;the minimum fluidization velocity is influenced by the bed material size and heating rate. The preliminary testmeasurement shows that the calorific value is 9.6 MJ/m~3 when oxygen concentration is 50%.更多还原