The coal extraction rate could be increased with the suitable selected solvent, the increased extraction temperature, the acid pre-treatment before the thermalextraction and other method.
选择合适溶剂、提高萃取温度、热萃取前加酸预处理等方法均可提高煤的萃取率。
2
In the extraction of components with the phenomena of thermal runaway, choosing the critical temperature can lead to a greater diffusion coefficient.
对可能发生热失控现象的物质进行提取时，萃取温度应选择在临界温度附近，此时扩散系数较大。
3
The thermal stability of the polymer coating and the relationship between the styrene ratio and the extraction efficiency were investigated.