次烟煤

中国的次烟煤及其分类

Subbituminous coal and its classification in China

次烟煤是褐煤与烟煤类间的过渡煤类，归属低煤阶煤。

Subbituminous coal is a transitional coal group between lignite and bituminous coal . It belongs to low rank coals .

本文在自由落下床装置中进行了白松和次烟煤的快速共热解实验，重点考察水蒸气气氛对共热解产物分布以及协同效应的影响。

In this paper , the fast co-pyrolysis of white pine and sub-bituminous coal was performed in the free fall reactor .

本文在水蒸气流量为3mL/h时，研究了有、无半焦床层及不同半焦床层温度时白松和次烟煤加水共热解过程。

The co-pyrolysis experiments at the steam rate of 3mL / h were carried out under different char bed temperature with and without char bed .

壳牌技术的另一大优势在于它适用各种各样的煤，包括劣质的次烟煤和褐煤。

Another advantage is the flexibility of Shell ′ s process to be able to operate on wide range of coal qualities , including low quality sub-bituminous coal and lignite .