반탄화에 의한 커피박 연료특성
Fuel Properities of Spent Coffee Bean by Torrefaction
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다운로드
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참고문헌
키워드
초록
This research analyzed the fuel characteristic change of spent coffee bean by torrefaction. The calorific value was increased from 4,974 kcal/kg to 6,075 kcal/kg (260℃, 30min), 6,452 kcal/kg (270℃, 30min), 6,823 kcal/kg (280℃, 30min),6,970 kcal/kg (260℃, 30min). The highest energy yield was obtained when the spent coffee bean were torrefied on the condition of 280℃, 30min. The moisture absorption rate was decreased from 5.12% to 2.76% when the spent coffee bean were torrefied on the condition of 290℃, 30min. Lignin was increased from 11.33% to 14.39% on the condition of 260℃ 30min. But it did not preferability to torrefy spent coffee bean at temperature of more than 270℃ because lignin decreases to the level that is hard to make pellet.
Abstract
This research analyzed the fuel characteristic change of spent coffee bean by torrefaction. The calorific value was increased from 4,974 kcal/kg to 6,075 kcal/kg (260℃, 30min), 6,452 kcal/kg (270℃, 30min), 6,823 kcal/kg (280℃, 30min),6,970 kcal/kg (260℃, 30min). The highest energy yield was obtained when the spent coffee bean were torrefied on the condition of 280℃, 30min. The moisture absorption rate was decreased from 5.12% to 2.76% when the spent coffee bean were torrefied on the condition of 290℃, 30min. Lignin was increased from 11.33% to 14.39% on the condition of 260℃ 30min. But it did not preferability to torrefy spent coffee bean at temperature of more than 270℃ because lignin decreases to the level that is hard to make pellet.
참고문헌 (16)
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