Air Contamination from Preparation Plants

Preparation of fine coal can cause air pollution if proper dust and gas removal equipment is not installed. The air effluent from a fine coal preparation plant consists of entrained dust, both coal and ash, and various gases, primarily consisting of products of coal combustion from thermal dryers [20]. Sources of particulates include thermal dryers, pneumatic coal-cleaning equipment, coal processing and conveying equipment, screening equipment, coal storage, coal transfer points, and coal handling facilities. The coal dust and ash can be controlled by a combination of mechanical separators, wet scrubbers, electrical precipitators, and filters.

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