Method for liquefying a hydrocarbon-rich flow while simultaneously obtaining a c3/c4-rich fraction
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jan 12, 2006
app pub date -
Jul 1, 2003
filing date -
Jul 23, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A process for liquefying a flow of natural gas with simultaneous recovery of a C.sub.3/C.sub.4-rich fraction is described, whereby the liquefaction of the flow of natural gas is carried out in heat exchange for at least one refrigerant and/or mixed refrigerant flow, and the flow of natural gas that is to be liquefied, after precooling, is subjected to a rectifying column, in which higher hydrocarbons are separated from the flow of natural gas, and then is subjected to further cooling and liquefaction, whereby a C.sub.2+-rich fraction that is recovered in the subsequent cooling of the flow of natural gas is fed to the rectifying column as a reflux liquid. According to the invention, a C.sub.4/C.sub.5-rich fraction (20, 35) is fed directly and/or indirectly to rectifying column (T1) as an additional reflux liquid, whereby the feed point of the C.sub.4/C.sub.5-rich [fraction (20, 35) is located at the top of rectifying column (T1) or is identical to the feed point of the C.sub.2+-rich fraction (5).]
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully