Abstract: The basic principle and process of cold oil absorption method and PSA method in dry gas recovery plant was compared. A coupled process technology of PSA and cold oil absorption for recovering C2+ was introduced. Taking a dry gas unit as an example，the technical characteristics of this new method was discussed in terms of process configuration，energy consumption and area. Compared with the traditional dry gas recovery method，the coupled process technology of PSA and cold oil absorption has advantages in low energy consumption，greatly reduced amount of absorbent，and low plant installation cost.

Key words: dry gas, recovery, cold oil, absorption, PSA, energy consumption