Process of changing municipal solid waste into RDF using rotary bio-drying
Keywords:
Refuse Derived Fuel, Rotary Bio-drying, Dewatered Municipal Solid WasteAbstract
Refuse Derived Fuel (RDF) is produced by significantly reducing the moisture content of Municipal Solid Waste (MSW). By using bio-drying process inhabited the heat from the degradation process of organic waste. The MSW size was reduced to be less than 3 inches in order to have a thorough circulation of air. This study aimed to investigate the effects of rotation speed and initiate preheat time on the rotary bio-drying process for drying the high initial moisture content households solid waste, allowing satisfied energy content biofuel. The density was 212 kg/m3, air inlet was 0.075 m3/hr/kg, with the rotation rate at 0.1, 0.2, 0.3, 0.4 rpm, preheating at 45°C for 6, 9, 12 hours in 8 days, respectively. As a result, preheating at 45°C for 12 hours, rotating speed at 0.4 rpm, with the air inlet at 0.075 m3/hr/kg, resulting in the reducing of the moisture content to 13%, and the increasing of the heating value to 4,588.91 kcal/kg, which was higher than standard RDF at 3,820.80 kcal/kg. Rotary bio-drying process can improve the quality of the waste within a short period of time. The RDF with high heating value is required in the industrial sector for use as fuel in the manufacturing.
References
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