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首页> 外文期刊>Fuel >Upgrading fuel quality of moso bamboo via low temperature thermochemical treatments: Dry torrefaction and hydrothermal carbonization
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Upgrading fuel quality of moso bamboo via low temperature thermochemical treatments: Dry torrefaction and hydrothermal carbonization

机译：通过低温热化学处理提高毛竹的燃料质量：干法焙烧和水热碳化

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摘要

The application of raw bamboo as biomass energy is restricted due to its large particle size, high oxygen content, low energy density and weak water resistance. In order to upgrade the fuel quality of moso bamboo, dry torrefaction (DT) and hydrothermal carbonization (HTC) have been investigated in this study. The physicochemical properties, thermal stability and microstructures of solid products were examined by varying the reaction temperature among 220, 260 and 300 degrees C. The results showed that.increasing temperature reduced the mass yield and energy yield, however, it significantly improved the calorific value of solid products. Through the HTC process, the bamboo hydrochar obtained the calorific value of 28.29 MJ/ kg, the energy yield of 59.77% and the fixed carbon content of 63.08% at the temperature of 260 degrees C, indicating enhanced potential as a solid fuel. In comparison, the grindability (including particle size and bulk density), hydrophobicity, and thermal stability of torrefied bamboo were considerably lower than that of bamboo hydrochar produced at the same temperature. Furthermore, the transformation of chemical bonds demonstrated that hydrolysis, dehydration and decarboxylation took place during the HTC process. The porous structure was only slightly enhanced with increasing reaction temperature, exhibiting variation consistent with that of hydrophobicity. (c) 2017 Elsevier Ltd. All rights reserved.
机译：由于粗竹的粒径大，氧含量高，能量密度低和耐水性差，限制了其作为生物质能的应用。为了提高毛竹的燃料质量，本研究对干法焙烧（DT）和水热碳化（HTC）进行了研究。通过在220、260和300℃之间改变反应温度来检查固体产物的理化性质，热稳定性和微观结构。结果表明，升高温度降低了质量产率和能量产率，但是显着提高了发热量固体产品。通过HTC工艺，竹炭在260℃的温度下发热量为28.29 MJ / kg，能量产率为59.77％，固定碳含量为63.08％，表明其作为固体燃料的潜力增强。相比之下，焙干的竹子的可磨性（包括粒度和堆积密度），疏水性和热稳定性明显低于在相同温度下生产的竹水煮炭。此外，化学键的转化表明在HTC过程中发生了水解，脱水和脱羧。随着反应温度的升高，多孔结构仅略微增强，表现出与疏水性一致的变化。 （c）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Fuel》 |2017年第may15期|473-480|共8页
  • 作者

    Yan Wei; Perez Sandy; Sheng Kuichuan;

  • 作者单位

    Zhejiang Univ, Coll Biosyst Engn & Food Sci, Hangzhou 310058, Zhejiang, Peoples R China;

    Univ Illinois, Sch Earth Soc & Environm, Urbana, IL 61801 USA;

    Zhejiang Univ, Coll Biosyst Engn & Food Sci, Hangzhou 310058, Zhejiang, Peoples R China;

  • 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

    Moso bamboo; Calorific value; Dry torrefaction; Hydrochar; Hydrothermal carbonization;

    机译：毛竹;热值;干焙;水炭;水热碳化;

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