A computational study of the co-combustion of diesel and pulverized coal fuel in a small-scale furnace
A.A. Dekterev, A.A. Dekterev, V.A. Kuznetsov, E.S. Tepfer, E.Yu. Shadrin
Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: burner, furnace chamber, mathematical modeling, coal micro-grinding, coal combustion, diesel fuel, flare combustion
Abstract
This article is devoted to the numerical modeling of the co-combustion of diesel fuel and micro-ground coal dust in a small-scale furnace with a steam-oil burner. A comprehensive mathematical model describing heat and mass transfer processes in burner and furnace devices is presented: diesel fuel evaporation under the influence of a steam jet, turbulent combustion of evaporated diesel fuel, and burnout of coal particles. The simulations demonstrated that the existing combustion chamber with a steam-oil burner allows for the combustion of micro-ground coal dust and operates stably over a wide range of coal dust flow rates. The obtained numerical modeling results can be used in the design of new compact combustion devices for flare combustion of coal dust.
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