초록 열기/닫기 버튼
Domestic livestock manure is generated at an average of more than 170,000 tons per day, and technologies thateffectively exploit manure as an energy source are drawing attention. Co-firing of coal and solid fuel derived from livestockmanure is one of the most economical and efficient methods to reduce CO2 emissions and increase renewable energysupplies. However, the high moisture content, low caloric value, and biodegradability of livestock manure limit theapplicability of this process. Torrefaction is a thermochemical process that converts biomass into a coal-like material withincreased caloric value, energy density, and hydrophobicity. This study investigated the effects of reaction temperatureand time on the torrefaction of three waste biomass samples derived from livestock manure. Torrefaction at 300oC for15 min increased the caloric value of the product up to 3,842 kcal/kg, which is eight times greater than that of the rawmaterial. Further comparisons of fuel characteristics including the fuel ratio and combustibility index reveal that theproduct is suitable for co-firing with coal.
