摘要
提出了用传统ＰＳＡ改良工艺、双级ＰＳＡ联合工艺、ＴＳＡ与ＰＳＡ联合工艺提取中间组分，介绍了工艺过程、工艺流程和工艺特性，并说明了各工艺工业应用场合和实际意义。
Intermediate component preparation by improved traditional PSA process, by combined two stage PSA process and by TSA and PSA hybrid procss is indicated. The processes and their special features are explained. The commercial application fields and practical importance of each process are specified.
