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Biomass gasification in an external circulating countercurrent moving bed gasifier

机译：外部循环逆流移动床气化炉中的生物质气化

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摘要

Biomass gasification was carried out in an External Circulating Countercurrent Moving Bed (ECCMB) gasification system. The system is composed of three reactors, a solid-solid co-current moving bed pyro-lyzer, a gas-solid countercurrent moving bed gasifier and a riser-type combustor. A series of experiments were conducted with pine sawdust as feedstock and calcined olivine as solid heat carrier as well as catalyst. The operation conditions including the temperature of pyrolyzer, the steam/biomass [S/B) ratio, the particle size of feedstock, and the height of catalyst bed in the gasifier were investigated. The results show that the pyrolyzer temperature and S/B ratio are important factors for the product distribution. Gas yield and chemical efficiency are greatly increased with increased pyrolyzer temperature. The hydrogen content follows the same tendency. The introduction of steam improves gas quality and tar content of as low as 2 g/Nm3 in the gas has been obtained. Both smaller particle size and higher catalyst bed height favor tar destruction, but impact no significant influence on the product gas composition.
机译：生物质气化在外部循环逆流移动床（ECCMB）气化系统中进行。该系统由三个反应器，一个固-固并流移动床热解器，一个气-固逆流移动床气化炉和一个立管式燃烧器组成。以松木屑为原料，煅烧的橄榄石为固体热载体和催化剂，进行了一系列实验。研究了热解炉的温度，蒸汽/生物质[S / B]比，原料的粒径以及气化炉中催化剂床的高度等操作条件。结果表明，热解器温度和S / B比是影响产物分布的重要因素。随着热解器温度的升高，气体产率和化学效率大大提高。氢含量遵循相同的趋势。蒸汽的引入改善了气体质量，并且气体中的焦油含量低至2 g / Nm3。较小的粒径和较高的催化剂床高度均有助于焦油的破坏，但对产物气体组成没有明显影响。

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  • 来源
    《Fuel》 |2013年第10期|635-640|共6页
  • 作者

    Wenjun Zou; Congcong Song; Shaoping Xu; Chao Lu; Yalkunjan Tursun;

  • 作者单位

    State Key Laboratory of Fine Chemicals, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116023, China;

    State Key Laboratory of Fine Chemicals, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116023, China;

    State Key Laboratory of Fine Chemicals, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116023, China;

    State Key Laboratory of Fine Chemicals, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116023, China;

    State Key Laboratory of Fine Chemicals, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116023, 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

    Biomass; Catalytic steam gasificatior; Hydrogen; Olivine; Solid heat carrier;

    机译：生物质催化蒸汽气化炉;氢;橄榄石;固体热载体;

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