| 摘要 |
Method and apparatus for liquefying a hydrocarbon stream. A hydrocarbon feed stream is passed through an NGL recovery system to separate the hydrocarbon feed stream into at least a methane-enriched overhead stream and a C2+ enriched bottom stream. The methane-enriched overhead stream is then passed through a first compressor to provide a methane-compressed stream, which is liquefied to provide a first liquefied stream. The pressure of the first liquefied stream is reduced to provide a mixed phase stream, which is passed through an end gas/liquid separator to provide an end gaseous stream and a liquefied hydrocarbon product stream. The end gaseous stream is passed through one or more end-compressors to provide an end compressed stream, of which at least a recycle fraction is fed into the methane-enriched overhead stream. The temperature of the first liquefied stream may be controlled to change the amount of the end gaseous stream.
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