溶剂热萃取法制备超低灰煤的研究进展

Research progress on preparation of ultralow-ash coal by solvent thermal extraction

为实现煤炭合理、高效、洁净的利用,需降低原料煤中所包含的灰分。经过溶剂热萃取法处理得到的超低灰煤具有无灰、无水、热活性高、流动性好等特点,可以应用于洁净燃料、炼焦、新型煤基材料、气化液化等领域。因此溶剂热萃取法制备超低灰煤的研究具有十分重要的意义。详细阐述了溶剂热萃取法制备超低灰煤过程中其萃取温度、溶剂、煤种对萃取率及生产工艺的影响。

In order to reasonably,efficiently and cleanly use the coal resource,the content of ash in raw coal is required to be reduced.The ultralow-ash coal obtained through solvent thermal extract is ash-free and water-free,and has high thermal activity and good flowability,which can be used in the clean fuels,coking,new coal-based materials,gasification and liquefaction field.The influence of extraction temperature,solvent and coal type on the extraction rate and the production process is also introduced.