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首页> 外文期刊>Renewable energy >Influence of phosphorous based additives on ash melting characteristics during combustion of biomass briquette fuel
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Influence of phosphorous based additives on ash melting characteristics during combustion of biomass briquette fuel

机译:磷基添加剂对生物质团块燃料燃烧过程中灰分熔融特性的影响

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摘要

To solve the ash related problems during biomass combustion, the combustion process, potassium fixation and ash fusion temperatures of two agricultural biomass briquettes (maize straws and cotton stalks) with phosphorus-based additives (NH4H2PO4 and Ca(H2PO4)(2)) were investigated. The briquetting process were performed in a lab-scale densification system. Results showed that the ash of maize straw briquette extends to agglomeration at 900 degrees C, and fully melted at 1000 degrees C and 1100 degrees C. The melted products were dark solid glaze shape, adhered to the porcelain boat. Additives enhanced potassium fixed ratios by different levels. At 1100 degrees C, the potassium fixed ratio changing rate of NH4H2PO4 was 52.87% -64.89%, while that of Ca(H2PO4)(2) was 35.90%-41.74%. So the influence of NH4H2PO4 on potassium fixation ability was better than that of Ca(H2PO4)(2). High melting point calcium potassium phosphates were produced by adding additives from XRD. SEM-EDS showed that the additives attached on fibers physically, reacting with potassium chemically, preventing the shrinkage and melt. Both NH4H2PO4 and Ca(H2PO4)(2) increased ash fusion temperature of biomass briquettes by 55-277 degrees C. (C) 2017 Elsevier Ltd. All rights reserved.
机译:为了解决生物质燃烧过程中与灰分有关的问题,研究了两种含磷添加剂(NH4H2PO4和Ca(H2PO4)(2))的农业生物质团块(玉米秸秆和棉秆)的燃烧过程,钾固定和灰分熔融温度。 。压块工艺在实验室规模的致密化系统中进行。结果表明,玉米秸秆团块的灰分在900℃下延伸至团聚,并在1000℃和1100℃下完全熔融。熔融产物为深色固体釉状,粘附在瓷船上。添加剂通过不同程度提高了钾的固定比率。在1100℃下,NH 4 H 2 PO 4的钾固定比率变化率为52.87%-64.89%,而Ca(H 2 PO 4)(2)的钾固定比率变化率为35.90%-41.74%。因此,NH4H2PO4对钾固定能力的影响优于Ca(H2PO4)(2)。通过添加来自XRD的添加剂可生产高熔点磷酸钙钾。 SEM-EDS表明,添加剂物理上附着在纤维上,与钾化学反应,防止了收缩和熔化。 NH4H2PO4和Ca(H2PO4)(2)均使生物质团块的灰熔融温度提高了55-277摄氏度。(C)2017 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Renewable energy》 |2017年第12期|428-437|共10页
  • 作者单位

    Shandong Univ, Sch Energy & Power Engn, Jinan 250061, Shandong, Peoples R China;

    Shandong Univ, Sch Energy & Power Engn, Jinan 250061, Shandong, Peoples R China;

    Shandong Univ, Sch Energy & Power Engn, Jinan 250061, Shandong, Peoples R China;

    Shandong Univ, Sch Energy & Power Engn, Jinan 250061, Shandong, Peoples R China;

    Shandong Univ, Sch Energy & Power Engn, Jinan 250061, Shandong, 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

    Biomass briquette; Potassium; Phosphorous-based additive; Combustion;

    机译:生物质团块;钾;磷基添加剂;燃烧;

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