Compressor
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United States of America Patent
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N/A
Issued Date -
Jan 10, 2008
app pub date -
Jan 13, 2005
filing date -
Jan 16, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A rotary liquefied natural gas boil-off compressor has a series of compression stages. A gas passage passes through the series of compression stages. The gas passage extends through and is in heat exchange relationship with cooling means in the form of indirect heat exchangers. Each of the heat exchangers is cooled by LNG supplied from a pipeline. Flow control valves are provided for controlling the flow of LNG to the heat exchangers respectively. The valves are controlled in response to temperature sensors respectively, so as to maintain the inlet temperature of each of the compression stages at a chosen sub-ambient temperature or between chosen sub-ambient temperature limits.
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