This article is cited in 2 papers

Experimental study of diffusion combustion of a fine pulverized coal in a $\mathrm{CH}_4$–$\mathrm{N}_2$ gas jet

S. V. Alekseenko, E. B. Butakov, L. M. Chikishev, D. K. Sharaborin

S.S. Kutateladze Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences, 630090, Novosibirsk, Russia

Abstract: This paper presents an experimental study of diffusion jet combustion of gas at different flow rates of $\mathrm{CH}_4$–$\mathrm{N}_2$ and a constant flow rate of coal. Entrainment curves for a diffusion flame for different nozzle diameters are obtained. It is shown that an increase in the nozzle diameter causes a decrease in the minimum residual flow rate of the fuel gas at which stable combustion is possible. As coal is supplied, the residual flow rate of the fuel gas also becomes slightly lower. The fluorescent glow of $\mathrm{OH}$, which makes it possible to analyze the position and dynamics of the flame front is recorded.

Keywords: flames, pulverized coal combustion, ignition, panoramic optical measurements.

UDC: 62-643, 662.61, 536.462

Received: 01.06.2020
Revised: 01.06.2020
Accepted: 29.06.2020

DOI: 10.15372/PMTF20200509

 English version: Journal of Applied Mechanics and Technical Physics, 2020, 61:5, 757–762

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