RESEARCH ON THE QUANTITATIVE AND QUALITATIVE COMPOSITION OF SOLID COMPONENTS RELEASED INTO THE ATMOSPHERE DURING COAL COMBUSTION (USING A BRICK FACTORY AS AN EXAMPLE)

Abstract

Air pollution caused by natural coal combustion products during building brick production represents an urgent environmental problem that requires the comprehensive improvement of waste gas cleaning systems. This paper investigates the quantitative and qualitative composition of solid ingredients (ash and soot) released into the atmosphere during thermochemical fuel processing, using annular brick-firing kilns as an industrial example. A computational and analytical evaluation of solid particulate matter emissions was carried out, taking into account the performance parameters, quality characteristics, and elemental composition of low-rank brown coals from the Angren deposit (grades 2BR-B2 and 2BOMSSh-B2), which are characterized by high inherent ash content (up to 60%). A direct linear relationship was established between the amount of generated air pollutants, total fuel consumption, and coal ash content. The structural design features of the kilns' flue gas ducts, which lead to partial gravitational deposition of ash particles in horizontal sections, were identified and analyzed. The necessity of introducing a correction coefficient into calculation formulas to account for ash retention in the gas tunnel was substantiated. The obtained empirical and theoretical data serve as a foundation for designing effective dust and gas cleaning equipment.