METHOD AND APPARATUS FOR COOLING A HYDROCARBON STREAM
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United States of America Patent
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Issued Date -
Jun 12, 2008
app pub date -
Nov 12, 2007
filing date -
Nov 14, 2006
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Abstract
A method of cooling a hydrocarbon stream such as natural gas, the method at least comprising the steps of: (a) providing a feed stream; (b) passing the feed stream through a gas treatment stage comprising one or more (number: X) parallel gas treatment units, the feed stream being divided into two or more part-feed streams if there is more than one gas treatment unit, to provide one or more first treated streams; (c) passing the first treated stream or streams of step (b) through an NGL extraction stage comprising one or more (number: Y) parallel NGL extraction units, the first treated stream or streams being shared to match the number of NGL extraction units, to provide one or more second treated streams; and (d) passing the second treated stream or streams of step (c) through a cooling stage comprising one or more (number: Z) parallel cooling systems, the second treated stream or streams being shared to match the number of cooling systems, to provide a cooled hydrocarbon stream or streams.
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