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Different Methods for the Characterization of Ash Compositions in Co-Firing Boilers

机译：共同烧制锅炉中灰分组成特征的不同方法

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With increased co-firing of coal and different biomasses in power plants, there is a growing need to study and characterize the produced, often heterogeneous ashes and to assess their utilization as secondary raw materials. In this work, we compare different methods for characterizing the ash compositions. These methods include scanning electron microscopy-energy dispersive X-ray analysis (SEM-EDS), X-ray fluorescence (XRF) and inductively coupled plasma emission spectroscopy (ICP-OES). The content of carbonaceous residues in the ashes was measured with CHNS analyzer. The methods and the pretreatment required for each of the analysis were studied in detail for three ashes: (1) coal, (2) peat and wood, (3) peat and wood residue with dolomite addition. The limitations of each method will be discussed. This work gives guidelines for selecting a rapid and reliable method for analyzing the suitability of the ash for a particular application.
机译：随着煤炭和不同生物量的增加，越来越需要研究和表征生产，通常是异质的灰烬，并评估其利用作为二次原料。在这项工作中，我们比较了用于表征灰分组成的不同方法。这些方法包括扫描电子显微镜 - 能量分散X射线分析（SEM-EDS），X射线荧光（XRF）和电感耦合等离子体发射光谱（ICP-OES）。用CHNS分析仪测量灰烬中碳质残留物的含量。详细研究了每种分析所需的方法和预处理，用于三个灰烬：（1）煤，（2）泥炭和木材，（3）泥炭和木质残留物，具有白云岩添加。将讨论每个方法的局限性。这项工作提供了选择快速可靠的方法，用于分析灰烬对于特定应用的适用性。

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