研究了Ｈ２ＣＯ２ＣＨ４ＣＯ混合气在活性炭（ＡＣ）和分子筛（ＭＳ）上的变压吸附（ＰＳＡ）过程，各组分在ＡＣ上的吸附能力为：ＣＯ２的大于ＣＨ４的，ＣＨ４的大于ＣＯ的；在ＭＳ上为：ＣＯ的大于ＣＨ４的。并研究了混合气在ＡＣＭＳ复合床层上的ＰＳＡ过程，其中ＡＣ充填于进口端，主要吸附ＣＯ２和ＣＨ４；ＭＳ主要吸附ＣＯ，为复合床层ＰＳＡ过程的模拟计算和设计提供了基础。 The pressure swing adsorption (PSA) process of H2CO2CH4CO mixture on activated carbon (AC) and molecular sieve (MS) was studied. The adsorption capacity of each component on AC was: CO2 greater than CH4, CH4 Greater than CO; at MS: CO greater than CH4. The PSA process of mixed gas on ACMS composite bed was studied. The AC was packed at the inlet end and mainly adsorbed CO2 and CH4. The main adsorption of CO by MS provided the basis for the simulation calculation and design of PSA composite bed.