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 褐煤是煤化程度最低的煤种,煤化程度介于泥炭和烟煤之间,含水量高,在空气中易风化;含一定量的原生腐殖酸,碳含量低,氧含量高,氢含量变化大。由于褐煤水分高、热值低、易风化和自燃。可分为非蒸发脱水提质技术、成型提质技术、热解提质技术三大类。

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