Method and system for producing liquefied natural gas (LNG)
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United States of America Patent
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Oct 6, 2015
Grant Date -
Jun 24, 2010
app pub date -
Dec 17, 2009
filing date -
Dec 19, 2008
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Abstract
A method and system for optimizing the efficiency of an LNG liquification system of the gas expansion type, wherein an incoming feed gas is first separated in a fractionation column by counter current contact with a cold reflux fluid, and a gaseous stream introduced into the heat exchanger system at a reduced temperature such that an intermediate pinch point is created in the warm composite curve.
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