FIELD: oil and gas industry.
SUBSTANCE: invention relates to repeated liquefaction of stripping gas formed in tank for storage of liquefied gas installed on floating facility. Plant for repeated liquefaction of stripping gas formed in tank includes compression unit for compression of stripping gas discharged from cistern, and a heat exchanger for heat exchange between the flash gas, compressed compression unit, and stripping gas discharged from the tank. Plant additionally comprises means for separation of compressed stripping gas passing through heat exchanger, at least into two flows, including first flow and second flow, and means of expanding separated first stream; a first intermediate cooler for cooling a second stream using a first stream expanded by expansion means, as a coolant; and a receiver for receiving a second flow passing through the first intermediate cooler, wherein pressure downstream of the compression unit is controlled by a stream discharged from the receiver.
EFFECT: reduced power consumption of multistage compressor and increased efficiency of repeated liquefaction.
20 cl, 7 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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|
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