A novel index for the study of synergistic effects during the co-processing of coal and biomass

Oladejo, Jumoke M. and Adegbite, Stephen and Pang, Cheng Heng and Hao, Liu and Parvez, Ashak M. and Wu, Tao (2017) A novel index for the study of synergistic effects during the co-processing of coal and biomass. Applied Energy, 188 . pp. 215-225. ISSN 0306-2619

[img] PDF - Repository staff only until 10 December 2017. - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Available under Licence Creative Commons Attribution Non-commercial No Derivatives.
Download (6MB)

Abstract

In this study, synergistic interaction between coal and biomass and its intensity were investigated systematically using a low rank coal and its blends with different biomass samples at various blending ratios. The catalytic effects of minerals originated from biomass were also studied. It was found that some of the minerals existing in the ash derived from oat straw catalysed the combustions process and contributed to synergistic interactions. However, for the coal and rice husk blends, minimal improvements were recorded even when the biomass and coal blending ratio was as high as 30 wt%. Biomass volatile also influenced the overall combustion performance of the blends and contributed to synergistic interactions between the two fuels in the blends. Based on these findings, a novel index was formulated to quantify the degree of synergistic interactions. This index was also validated using data extracted from literature and showed satisfactory correlation coefficients. It was found that at a blending ratio of 30 wt% oat straw in the blend, the degree of synergistic interaction between coal and oat straw showed an additional SF value of 0.25 with non-catalytic and catalytic synergistic effect contributing 0.16 (64%) and 0.09 (36%) respectively. This index could be used in the selection of proper biomass and proper blending ratio for co-firing at coal-fired power stations aiming at improving the combustion performance of poor quality coals via enhancing synergistic interactions during co-processing.

Item Type: Article
Keywords: Fuel characterisation; Synergistic interaction; Performance index; Synergy index; Thermogravimetric analysis
Schools/Departments: University of Nottingham Ningbo China > Faculty of Science and Engineering > Department of Chemical and Environmental Engineering
University of Nottingham, UK > Faculty of Engineering > Department of Architecture and Built Environment
Identification Number: https://doi.org/10.1016/j.apenergy.2016.12.005
Depositing User: Mitchell, Catherine
Date Deposited: 13 Feb 2017 10:50
Last Modified: 14 Feb 2017 17:10
URI: http://eprints.nottingham.ac.uk/id/eprint/40535

Actions (Archive Staff Only)

Edit View Edit View