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首页> 外文期刊>Fuel >Effect of pretreatment temperature on the yield and properties of bio-oils obtained from the auger pyrolysis of Douglas fir wood
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Effect of pretreatment temperature on the yield and properties of bio-oils obtained from the auger pyrolysis of Douglas fir wood

机译：预处理温度对花旗松木螺旋钻热解获得的生物油的产量和性能的影响

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摘要

This paper investigates the effect of thermal pretreatment temperatures between 200 and 370 ℃ on the yield and composition of products (bio-charm gasm water and organics) obtained when Douglas-fir wood was subsequently pyrolyzed in an auger reactor at 500 ℃. The yield of products was reported for the pretreatment and pyrolysis steps separately, and for the two steps added. The maximum yield of bio-oils achieved without pretreatment was close to 59 mass%. A decrease in total liquid yield was observed when the biomass was pretreated at 300 ℃. At higher temperatures, the yields of Douglas-fir primary degradation products (lignin oligomers, anhydrosugars and alkylated and methoxylated phenols) decreased. The overall water yield increased gradually to 14 mass% at a pretreatment temperature of 290 ℃. The yield of lignin oligomers also decreased as the pretreatment temperature increased. A drastic reduction in the yield of methoxylated phenols derived from guaiacyl (G) was observed when the biomass was pretreated at temperatures over 300 ℃. This drastic reduction in the yield of methoxylated lignin derivatives can be explained by the formation of liquid intermediates that facilitate the formation of ionic species, enhancing dehydration reactions leading to the production of o-quinone methide intermediates critical for bio-char formation.
机译：本文研究了热处理温度在200到370℃之间对花旗松木随后在500℃的螺旋反应器中热解后获得的产品（生物炭气水和有机物）的产量和组成的影响。分别报道了预处理和热解步骤以及添加的两个步骤的产物收率。未经预处理可获得的最大生物油收率接近59质量％。当生物质在300℃下预处理时，总液体产率下降。在较高的温度下，道格拉斯冷杉一级降解产物（木质素低聚物，脱水糖以及烷基化和甲氧基化酚）的收率下降。在290℃的预处理温度下，总产水量逐渐增加到14质量％。木质素低聚物的产率也随着预处理温度的升高而降低。当在300℃以上的温度下对生物质进行预处理时，可观察到衍生自愈创木（G）的甲氧基化酚的收率急剧下降。甲氧基化木质素衍生物产率的急剧下降可以通过形成液体中间体来解释，该液体中间体促进离子物种的形成，增强脱水反应，从而导致对生物炭形成至关重要的邻醌甲基化物中间体的产生。

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  • 来源
    《Fuel》 |2013年第1期|672-682|共11页
  • 作者

    Shi-Shen Liaw; Shuai Zhou; Hongwei Wu; Manuel Garcia-Perez;

  • 作者单位

    Biological Systems Engineering, Washington State University, WA 99164, USA;

    Biological Systems Engineering, Washington State University, WA 99164, USA;

    Fuels and Energy Technology Institute, Department of Chemical Engineering, Curtin University, CPO Box U1987, Perth WA 6845, Australia;

    Biological Systems Engineering, Washington State University, WA 99164, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    auger pyrolysis; bio-oil; step-wise pyrolysis; douglas-fir; torrefaction;

    机译：螺旋热解生物油分步热解道格拉斯冷杉烘焙;

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