Optimized LNG system with liquid expander
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United States of America Patent
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Aug 26, 2008
Grant Date -
May 24, 2007
app pub date -
Nov 18, 2005
filing date -
Nov 18, 2005
priority date (Note) -
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Abstract
A process and apparatus for the liquefaction of natural gas including at least one liquid expander for providing expansion of a high-pressure stream and powering a generator capable of producing electricity to be used to drive a compressor located elsewhere in the liquefaction apparatus. Particularly, a liquid expander is used to expand a high-pressure refrigerant stream and to power an electrical generator. The electricity provided by the generator can be used to power a compressor located in the same or a different refrigeration cycle as the liquid expander.
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