Replacement of coal by RDF (Refused Derived Fuel)
Abstract
Within Municipal Solid Waste (MSW) management, processing of several fractions that are combustible in nature but are not recyclable such as soiled paper, soiled cloth, contaminated plastics, multilayer, packaging materials, other packaging materials, pieces of leather, rubber, tyre, polystyrene (thermocol), wood etc. has remained a challenge and these fractions unwantedly ends up at landfill sites. These fractions can be processed and converted to refuse derived fuel (RDF), which carries significant calorific value, and can be utilized as alternative fuel in various industries in line with the principle of waste to wealth. The principle of RDF production is recovering quality fuel fractions from the waste, particularly through the removal of recyclable particles such as metal and glass, and converting the raw waste into a more usable form of fuel with uniform particle size and higher calorific value than raw MSW. For example, the broad specification of RDF suitable for the Indian cement plants is preferably having Moisture (< 20 %), average particle size (< 75 mm), calorific value (~ 3000 kcal/kg), Chlorine (< 0.7%), Sulphur (< 2%) and should be free of restricted items such as PVC, explosives, batteries, aerosol containers and bio-medical waste.
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