中文摘要：

为考察热裂解温度及床料对生物质热裂解液固产物分布的影响，在一高温烟气发生炉加热的小型流化床上，以玉米秸秆粉为原料，石英砂、白云石和高铝矾土分别作为流化床床料，在450、475、500和525℃4个不同温度下进行热裂解液化试验。研究结果表明：①以上述3种物质分别作床料时，生物油收集率都先随温度的升高而增大，当温度升高到一定程度时，开始随温度的升高而下降。以白云石为床料的生物油收集率较高，在500℃时最高值可达43％，其次为石英砂，高铝矾土对应的生物油收集率较低；3种床料的生物油最大收集率均产生在约500℃。残炭收集率随温度升高一直呈下降趋势；以石英砂为床料时，残炭收集率较高，高铝矾土与之相近，白云石较低；②生物油分为轻质生物油和重质生物油两部分，随着温度的升高，重质生物油占所得生物油总重比例的变化和生物油收集率变化趋势几乎一致，并也在约500℃达到最大，之后两者都有下降，但重质生物油占总重比例的下降要较生物油收集率的下降剧烈。

英文摘要：

In order to study the influence of temperature and different fluidized bed materials on biomass pyrolysis product distribution, corn stalk powder pyrolysis experiments were conducted on a fluidized bed reactor heated by a flue gas generator at 450℃, 475℃, 500℃and 525℃. Quartz sand, aluminous soil and dolomite were used as bed material, respectively, The experimental results have shown that the bio-oil yield increases with the increasing temperture and reaches the maximum at about 500℃. Subsequently the bio-oil yield decreases with the increasing temperature. The bio-oil yield was 43% at 500℃ with the dolomite as bed material, which was higher than that of other two bed materials at the same temperature. The char yield decreases with the increasing temperature for all three bed materials. The highest char yield occurred when the quartz sand was used as bed material, while the lowest char yield occurred when the dolomite was used as bed material.