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首页> 外文期刊>Fuel >Gasification of waste biomass chars by carbon dioxide via thermogravimetry.Part I: Effect of mineral matter
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Gasification of waste biomass chars by carbon dioxide via thermogravimetry.Part I: Effect of mineral matter

机译：二氧化碳通过热重法气化废生物质焦。第一部分：矿物质的影响

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摘要

A series of carbon dioxide gasification tests of waste biomass chars were performed in a thermogravimet-ric analysis system, at non-isothermal heating conditions. The effects of the inorganic constituents of the fuels on thermal conversion characteristics were examined. Reaction rates were determined by developing a power law model. The bulk of char gasification process occurred between 800 and 950 ℃. Maximum reaction rate and conversion were exhibited by waste paper char, due to its higher surface area. Inherent alkaline and alkaline earth carbonates and sulphates acted as catalysts, by increasing the reactivity of the fuels in carbon dioxide and causing their degradation to start at lower temperatures (60-75 ℃). The kinetic model fitted the experimental results accurately. Activation energy values and reaction order ranged from 180 to 370 kj/mol and 0.4 to 0.6, respectively, among the chars, indicating a chemically controlled process.
机译：在非等温加热条件下，在热重分析系统中进行了一系列废弃生物质炭的二氧化碳气化测试。研究了燃料的无机成分对热转化特性的影响。反应速率是通过建立幂律模型确定的。焦炭气化过程大部分发生在800到950℃之间。废纸炭由于其较高的表面积而具有最大的反应速率和转化率。固有的碱金属和碱土金属碳酸盐和硫酸盐通过增加燃料在二氧化碳中的反应性并使其在较低的温度（60-75℃）下开始降解而充当催化剂。动力学模型准确拟合了实验结果。在炭中，活化能值和反应阶数分别在180至370kj / mol和0.4至0.6的范围内，表明是化学控制的过程。

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  • 来源
    《Fuel》 |2011年第3期|p.1120-1127|共8页
  • 作者

    D. Vamvuka; E. Karouki; S. Sfakiotakis;

  • 作者单位

    Department of Mineral Resources Engineering, Technical University of Crete, Greece;

    Department of Mineral Resources Engineering, Technical University of Crete, Greece;

    Department of Mineral Resources Engineering, Technical University of Crete, Greece;

  • 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

    waste biomass; gasification; kinetics; mineral matter;

    机译：废生物质气化动力学矿物质;

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