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The positive effects of bed material coating on tar reduction in a dual fluidized bed gasifier

机译：床料涂层对双流化床气化炉中焦油减少的积极影响

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摘要

The utilization of biomass for the substitution of fossil fuels to reduce greenhouse gas emissions in bio-mass steam gasification plants is a promising technology for the production of electricity, heat, and fuels for transportation. Experience from industrial scale dual fluidized bed steam gasification plants showed a modification of the bed material due to the interaction of the bed material (olivine) with biomass ash components and additives. In this paper the influence of bed material modification on the gasification properties of used olivine from an industrial scale plant in Giissing is compared with the case of fresh olivine. The trials were carried out under similar conditions in a pilot plant at the Vienna University of Technology. The pilot plant trials showed an increase in hydrogen and carbon dioxide in the product gas with the used bed material while the content of carbon monoxide in the product gas decreased. The exothermal water-gas shift reaction is enhanced by the used bed material, resulting in a lower energy demand for the gasification. Tar content was decreased by around 80% for tars detected by gas chromatography-mass spectrometry (GCMS) and the composition of the tar showed less components during the trial with used bed material. The results obtained with the used bed material at the 100 kW pilot plant are in good agreement with those for the 8 MW industrial plant in Giissing, confirming good scale-up properties from the 100kW plant to industrial scale plants.
机译：利用生物质代替化石燃料以减少生物质蒸汽气化厂中的温室气体排放，是用于生产电，热和运输燃料的有前途的技术。工业规模的双流化床蒸汽气化厂的经验表明，由于床层材料（橄榄石）与生物质灰分成分和添加剂的相互作用，因此对床层材料进行了改良。在本文中，将床材改性对Giissing工业规模工厂用过的橄榄石气化特性的影响与新鲜橄榄石的情况进行了比较。这些试验是在类似条件下在维也纳工业大学的中试工厂中进行的。中试工厂的试验表明，使用过的床层物料会增加产品气体中的氢气和二氧化碳，而产品气体中的一氧化碳含量会降低。所用的床材料可增强放热水煤气变换反应，从而降低气化的能源需求。通过气相色谱-质谱法（GCMS）检测到的焦油，焦油含量降低了约80％，并且在用过的床料进行试验期间，焦油的成分显示出较少的组分。在100 kW试点工厂中使用的床层材料获得的结果与Giissing的8 MW工业工厂的结果非常吻合，证实了从100 kW工厂到工业规模工厂的良好放大性能。

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  • 来源
    《Fuel》 |2012年第2012期|p.553-562|共10页
  • 作者

    Friedrich Kirnbauer; Veronika Wilk; Hannes Kitzler; Stefan Kern; Hermann Hofbauer;

  • 作者单位

    Bioenergy 2020+ GmbH, Wiener Strafie 49, A-7540 Giissing, Austria;

    Bioenergy 2020+ GmbH, Wiener Strafie 49, A-7540 Giissing, Austria;

    Vienna University of Technology, Institute of Chemical Engineering, Getreidemarkt 9/166, 1060 Vienna, Austria;

    Vienna University of Technology, Institute of Chemical Engineering, Getreidemarkt 9/166, 1060 Vienna, Austria;

    Vienna University of Technology, Institute of Chemical Engineering, Getreidemarkt 9/166, 1060 Vienna, Austria;

  • 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 gasification; bed material; catalytic tar reforming; calcium oxide; olivine;

    机译：生物质气化;床材料催化焦油重整;氧化钙橄榄石;

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