| 摘要 |
A gas production plant has a first separator receiving a feed gas and produces a first offgas stream and a first product stream, and a second separator receives the first offgas stream and produces a second product stream and a second offgas stream. A liquefaction unit receives at least part of the first product stream and at least part of the second offgas stream, and produces a third product stream and a third offgas stream. A first portion of the third offgas stream is combined with the first offgas stream, and a second portion of the third offgas stream is used as a non-waste gas. In a method of removing a first and a second gaseous component from a feed gas, a PSA unit produces a first product stream and a first offgas stream. The first offgas stream is fed into a liquefaction unit that produces a second product stream and a second offgas stream, and at least part of the second offgas stream is recycled into the PSA unit.
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