Different methods for the characterization of ash compositions in co-firing boilers

A4 Conference proceedings

Internal Authors/Editors

Publication Details

List of Authors: J.-E. Eriksson, T. Khazraie, L. Hupa
Editors: Ziqi Sun, Cong Wang, Donna Post Guillen, Neale R Neelameggham, Lei Zhang, John A. Howarter, Tao Wang, Elsa Olivetti, Mingming Zhang, Dirk Verhulst, Xiaofei Guan, Allie Anderson, Shadia Ikhmayies, York R. Smith, Amit Pandey, Sarma Pisupati, Huimin Lu
Place: Switzerland
Publication year: 2018
Publisher: Springer
Book title: Energy Technology 2018. TMS 2018
Title of series: The Minerals, Metals & Materials Series
Start page: 253
End page: 263
ISBN: 978-3-319-72361-7
eISBN: 978-3-319-72362-4


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.

Last updated on 2020-30-03 at 04:16