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烟煤

烟煤

烟煤(英語:Bituminous coal; 希臘語Λιθάνθρακας),是一种相对软的煤,包含类似焦油的沥青物质。燃燒品質优于褐煤但低于无烟煤。一般为褐色,有的为暗褐色,经常有亮-暗相间的材质。

烟煤是褐煤经地层高压变质的产物,基本成分是煤显微组分、镜质体、壳质体等。烟煤中的占45-86%[1]; 其它成分是水、空气、氢、硫等未能从煤显微组分中去除掉的物质。

烟煤的燃烧热值为24-35 MJ/kg。 烟煤因烟量大而得名,燃烧空气污染严重,烟气中含,易致病。

煤层密度平均为1346 kg/m³ 。烟煤的堆积密度平均为833 kg/m³。

参考文献

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  1. ^ Coal explained - U.S. Energy Information Administration (EIA). www.eia.gov. [2020-09-26]. (原始内容存档于2021-01-31). 

外部連結

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烟煤
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