【摘要】 以木粉为原料,在不同反应条件下利用Py-GC/MS装置对其进行快速热解,并对热解油气进行在线检测分析,研究反应温度和热解时间对生物油组成及其产率的影响。结果表明,在400℃条件下生物油组成单一,便于分离和提纯;继续升高温度,生物油组成及其产率均逐步增加;温度高于700℃,有利于轻质类和芳香烃类碳氢化合物的生成。同一反应温度,不同热解时间,生物油组成保持稳定,但各类化合物的产率均发生变化。在反应温度为600℃,反应时间为25 s的条件下,高附加值的苯酚类化合物的产率最高。更多还原

【Abstract】 The fast pyrolysis of sawdust is studied under different reaction conditions by using pyrolysis-gas chromatograph / mass spectrometry( Py-GC / MS). The gases of pyrolysis oil are online analyzed. The effects of reaction temperature and time on the composition and yields of bio-oil are researched. The results show that less species in the products at 400℃ are in favor of isolation and purification. The composition and yield of bio-oil increase with the rise of temperature. When the temperature is over 700℃,the yields of light and aromatic hydrocarbons quickly increase.However,at the same temperature,by changing the pyrolytic reaction time,the composition of the bio-oil is constant but the yields of various kinds of compounds change. The yield of high-valued phenols reaches the maximum value when the temperature is 600℃ and the pyrolytic time is 25 seconds.更多还原