矿业工程研究
礦業工程研究
광업공정연구
MINERAL ENGINEEERING RESEACH
2012年
1期
59-63
,共5页
褐煤%热风干燥%微波脱水%脱水效率
褐煤%熱風榦燥%微波脫水%脫水效率
갈매%열풍간조%미파탈수%탈수효솔
brown coal%hot air dehydration%microwave dehydration%dehydration efficiency
采用热风干燥法和微波脱水法对小龙潭褐煤进行干燥脱水实验,并模拟南方空气湿度条件对干燥脱水后褐煤的水分回吸进行了实验研究.结果表明：温度和时间是影响热风干燥脱水效率的主要因素,干燥脱水效率随着干燥温度的升高和干燥时间的延长而提高,但当干燥温度大于等于160℃,干燥时间为25min时,继续延长干燥时间,干燥脱水效率提高不明显,微波有效输出功率和脱水时间是影响微波脱水效率的主要因素,褐煤粒径对热风干燥的影响比微波脱水大,褐煤干燥脱水的理想目标值为15%左右.
採用熱風榦燥法和微波脫水法對小龍潭褐煤進行榦燥脫水實驗,併模擬南方空氣濕度條件對榦燥脫水後褐煤的水分迴吸進行瞭實驗研究.結果錶明：溫度和時間是影響熱風榦燥脫水效率的主要因素,榦燥脫水效率隨著榦燥溫度的升高和榦燥時間的延長而提高,但噹榦燥溫度大于等于160℃,榦燥時間為25min時,繼續延長榦燥時間,榦燥脫水效率提高不明顯,微波有效輸齣功率和脫水時間是影響微波脫水效率的主要因素,褐煤粒徑對熱風榦燥的影響比微波脫水大,褐煤榦燥脫水的理想目標值為15%左右.
채용열풍간조법화미파탈수법대소룡담갈매진행간조탈수실험,병모의남방공기습도조건대간조탈수후갈매적수분회흡진행료실험연구.결과표명：온도화시간시영향열풍간조탈수효솔적주요인소,간조탈수효솔수착간조온도적승고화간조시간적연장이제고,단당간조온도대우등우160℃,간조시간위25min시,계속연장간조시간,간조탈수효솔제고불명현,미파유효수출공솔화탈수시간시영향미파탈수효솔적주요인소,갈매립경대열풍간조적영향비미파탈수대,갈매간조탈수적이상목표치위15%좌우.
By using hot air dehydration and microwave dehydration,the dehydration experiment of Xiaolongtan brown coal investigated the moisture absorption of dried brown coal under the simulative air humidity condition on the Southern part of China.The experimental results showed that the hot air dehydration efficiency depended mainly on drying temperature and time.The dehydration efficiency rose with the increasing of the drying temperature and time.However,when the drying temperature was 160 ℃ or higher and drying time was 25 min,the drying dehydration efficiency was not obviously increased by extending the drying time.In addition,the microwave dehydration efficiency could also be influenced by the effective microwave output power and dehydration time.The influence of brown coal sample size on the hot air dehydration was larger than that of microwave dehydration.The ideal dehydration target of brown coal was about 15%.
