In this study, three torrefaction atmosphere (N₂, CO₂ and 2 vol% O₂ with N₂ balance) were used to study effects of representative main components of flue gas during torrefaction and subsequent pyrolysis. Torrefaction pretreatment was carried out in a fixed-bed reactor at 230 °C and 250 °C, respectively. Results showed after torrefaction, torrefied samples from oxygenated atmosphere presented severer hemicellulose decomposition. And its effects on fast pyrolysis were investigated in thermogravimetry analysis and bench-scale fixed-bed reactor. It was found that oxygenated atmosphere preferred to give higher relative content of phenols at 230 °C and furans at 250 °C. For CO₂, higher relative content of ketones and lowest phenols were got. The result also indicated that it's the O₂ in flue gas which significantly improved the char yield. These results will be beneficial reference to predict and interpret alterations of pyrolysis behaviors when flue gas constitution changes in industrial application.

在这项研究中，使用三种干燥气氛（N ₂，CO ₂和2 vol％的O ₂和N ₂平衡）来研究代表性的烟气主要组分在干燥和随后的热解过程中的作用。干燥预处理分别在固定床反应器中于230°C和250°C进行。结果表明，焙干后，来自氧化气氛的焙干样品呈现出更严重的半纤维素分解。并在热重分析和台式固定床反应器中研究了其对快速热解的影响。已经发现，氧化气氛优选在230℃下具有较高的相对酚含量，而在250℃下具有较高的呋喃相对含量。对于CO ₂可以得到较高的酮相对含量和最低的酚含量。结果还表明，正是烟气中的O ₂显着提高了焦炭收率。这些结果将为预测和解释工业应用中烟气成分变化时热解行为的变化提供有益的参考。