Ignition of bio-water-coal fuel drops

S.V. Syrodoy, G.V. Kuznetsov, N.Y. Gutareva and M.V. Purin

Energy, 2020, vol. 203, issue C

Abstract: The researchers from many countries are currently developing new eco-efficient fuel compositions. Such promising fuels include water-coal suspensions (WCF). But the ignition delay times of WCF particles are sometimes tens of seconds (up to 30–40). One of the possible methods to increase the reactivity of WCF is to add additives “accelerating” the ignition process, for example biomass, to its structure. This is already a complex composite bio-water-coal fuel (Bio-WCF). The physical theory and mathematical base of the processes of ignition and combustion of Bio-WCF drops have not been developed yet. The article presents the results of the theoretical and experimental studies of the ignition of substantially inhomogeneous drops of bio-water-coal fuel based on long-flame coal and woodworking waste. We have found that the addition of wood to the composition of water-coal composites leads to a significant reduction (up to 50%) of the entire induction period (ignition delay time — tign). According to the results of the experiments, the influence of the type of wood on the characteristics and conditions of ignition of the bio-WCF drops has been analyzed. It has been shown that pine-based bio-water-coal fuels ignite faster than larch and birch bio-WCF.

Keywords: Wood; Coal; Biomass; Bio water-coal fuel; Experiment; Ignition; Heat and mass transfer; Ignition delay time; Gas environment temperature; Mathematical modeling (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:203:y:2020:i:c:s0360544220309154

DOI: 10.1016/j.energy.2020.117808

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