Natural gas liquefaction process
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United States of America Patent
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Jun 17, 2008
Grant Date -
May 15, 2003
app pub date -
Mar 15, 2001
filing date -
Mar 15, 2000
priority date (Note) -
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Abstract
The invention relates to a natural gas liquefaction process and particularly to one suited to use offshore. The invention provides a natural gas liquefaction apparatus wherein a carbon dioxide based pre-cooling circuit is provided in a cascade arrangement with a main cooling circuit. The invention also extends to a natural gas liquefaction apparatus wherein a main cooling circuit uses as a refrigerant a gas stream, at least a portion of which is derived from a raw natural gas source.
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