Liquefaction process producing subcooled LNG
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United States of America Patent
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Mar 31, 2015
Grant Date -
Dec 19, 2013
app pub date -
May 30, 2013
filing date -
Apr 17, 2007
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Abstract
A variable speed liquid LNG expander (X1) and a variable speed two-phase LNG expander (X2) in line, downstream from X1. The rotational speed of both expanders can be controlled and changed independent from each other. The speed of expander X1 and expander X2 is determined in such way that the amount of liquid LNG downstream from the PHS compared to the feed gas supply is maximized and the amount of vapor and boil-off downstream of X2 is minimized.
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