论文部分内容阅读
以昭通褐煤为研究对象,比较了四氢呋喃(THF)、N-甲基吡咯烷酮(NMP)、石油醚等溶剂的单级萃取和三级萃取,同时对原煤和溶剂萃取物分别进行分析。
Taking Zhaotong lignite as the research object, the single-stage and third-stage extraction of THF, NMP and petroleum ether were compared. The raw coal and solvent extract were analyzed respectively.