OALib Journal期刊
ISSN: 2333-9721
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低阶煤脱水提质技术发展现状
, PP. 1-4
Keywords: 低阶煤,改性,脱水提质,蒸发干燥,非蒸发干燥
Abstract:
脱水干燥是对低阶煤进行深加工前的重要环节,介绍并比较了热空气干燥、热蒸汽干燥、微波干燥和太阳能干燥等蒸发干燥工艺,以及水热处理(htd)、机械热压脱水(mte)、有机溶剂脱水(dme)等非蒸发干燥工艺。蒸发干燥过程简单,设备成本较低;htd和mte等非蒸发干燥过程不消耗气化潜热,并能对低阶煤进行深度改性,将水分从低阶煤中不可逆地脱除,同时提高低阶煤的煤阶和热值,因此应用前景广阔。
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