A process for recovering a first component and/or a second component from a multicomponent feed gas mixture containing the first component and the second component includes multiple steps. The first step is to pass the feed gas mixture through a membrane separation unit, thereby separating the feed gas mixture into a first stream enriched in the first component and a second stream lean in the first component. The second step is to cool the first stream. The third step is to expand the cooled first stream in a work extraction device, thereby generating a refrigeration supply for the process.