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Experimental study on co-combustion of low rank coal semicoke and oil sludge by TG-FTIR

机译:TG-FTIR的低排级煤半沟和油污泥共燃烧的实验研究

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摘要

Co-combustion was proposed as an effective and complementary means for the co-treatment of low rank coal semicoke (LRCS) and oil sludge. The combustion, kinetics and gaseous pollutants emission characteristics during co-combustion of LRCS and oil sludge were investigated by thermogravimetric analyzer coupled with Fourier transform infrared spectrometer (TG-FTIR). Results showed oil sludge had more complex weight loss characteristics than LRCS. Proper addition of oil sludge could effectively improve the ignition, burnout and comprehensive combustion performance of blends and 60% was a recommended oil sludge blend ratio. High heating rates could also enhance the combustion performance of blends. The activation energy determined by Coats-Redfern method gradually decreased with the increase of oil sludge blend ratio. DAEM kinetic analysis results showed the maximum activation energy of 113.4 kJ/mol was obtained when conversion rate was 0.4 due to the poor ignition performance of LRCS. All of the CO, CO_2, NO_x and SO_2 emission gradually decreased with the increasing oil sludge blend ratio. LRCS had suppression effect on NOx emission during co-combustion while oil sludge was just the opposite. The low sulfur release rate of oil sludge resulted in the decreasing SO_2 emission of blends although oil sludge had promotion effect on SO_2 emission.
机译:提出了共燃烧作为低排名煤中间静止(LRC)和油污泥的有效和互补的手段。通过热量分析仪与傅里叶变换红外光谱仪(TG-FTIR)相结合的热重分析仪研究了LRC和油污泥的共燃烧过程中的燃烧,动力学和气态污染物排放特性。结果显示油污具有比LRC更复杂的体重减轻特性。适当加入油污可以有效地提高喷射,倦怠和共混物的综合燃烧性能,60%是推荐的油污泥混合比。高加热速率也可以增强混合物的燃烧性能。随着油污混合比的增加,由涂层 - 铁丝法测定的激活能量逐渐降低。 Daem动力学分析结果表明,由于LRC的点火性能差,转化率为0.4时,获得了113.4kJ / mol的最大活化能量。随着油污混合比的增加,所有CO,CO_2,NO_X和SO_2发射逐渐降低。 LRCS在共燃烧过程中对NOx发射产生抑制作用,而油污泥则相反。虽然油污泥对SO_2排放产生促进效应,但硫污泥的低硫释放速率导致了混合物的减少率降低。

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  • 来源
    《Waste Management》 |2020年第10期|91-99|共9页
  • 作者单位

    Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China;

    Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China;

    Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China;

    Qilu University of Technology (Shandong Academy of Sciences) Ecology Institute of Shandong Academy of Sciences Shandong Province Key Laboratory of Applied Microbiology Jinan 250014 China;

    Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Low rank coal semicoke; Oil sludge; Co-combustion; TG-FTIR; Gaseous pollutants;

    机译:低排名煤半孔;油污泥;共燃烧;TG-FTIR;气态污染物;

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