公开(公告)号：DE19937623B4

公开(公告)日：2009-08-27

申请号：DE19937623

申请日：1999-08-10

Applicant: LINDE AG ,  STATOIL ASA

Inventor： STOCKMANN RUDOLF ,  PAUROLA PENTTI

IPC: F25J1/00 ,  F25J1/02

公开(公告)号：AU2005202956A1

公开(公告)日：2006-02-02

申请号：AU2005202956

申请日：2005-07-06

Applicant: LINDE AG ,  STATOIL ASA

Inventor： STOCKMANN RUDOLF ,  PAUROLA PENTTI ,  FRANKE HUBERT ,  SAPPER RAINER ,  BAUER HEINZ

IPC: F25J3/06 ,  F25J20060101 ,  F25J1/02

公开(公告)号：NO20053282L

公开(公告)日：2006-01-09

申请号：NO20053282

申请日：2005-07-05

Applicant: STATOIL ASA

Inventor： STOCKMANN RUDOLF ,  BAUER HEINZ ,  PAUROLA PENTTI ,  SAPPER RAINER ,  FRANKE HUBERT

IPC: F25J1/00 ,  F25J20060101 ,  F25J1/02

公开(公告)号：DE10233410A1

公开(公告)日：2004-02-12

申请号：DE10233410

申请日：2002-07-23

Applicant: LINDE AG ,  STATOIL ASA STAVANGER

Inventor： STOCKMANN RUDOLF ,  GWINNER MARTIN ,  PAUROLA PENTTI

IPC: F25J1/02 ,  F25J3/02

Abstract: A process for liquefying a flow of natural gas with simultaneous recovery of a C 3 /C 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 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 4 /C 5 -rich fraction ( 20, 35 ) is fed directly and/or indirectly to rectifying column (T 1 ) as an additional reflux liquid, whereby the feed point of the C 4 /C 5 -rich [fraction ( 20, 35 ) is located at the top of rectifying column (T 1 ) or is identical to the feed point of the C 2+ -rich fraction ( 5 ).]

公开(公告)号：AU2003206896A1

公开(公告)日：2003-09-04

申请号：AU2003206896

申请日：2003-02-14

Applicant: LINDE AG ,  STATOIL ASA

Inventor： STOCKMANN RUDOLF ,  PRIETZEL WERNER ,  PAUROLA PENTTI

IPC: F25J1/02 ,  F25B9/00

Abstract: A process is described for liquefaction of a hydrocarbon-rich stream, especially a natural gas stream, at least indirect heat exchange taking place between the hydrocarbon-rich stream to be liquefied and the refrigerant mixture of at least one refrigerant mixture circuit, and the refrigerant mixture being separated after completed supercooling into a gaseous fraction and a liquid fraction and these fractions being recombined before and/or during the reheating of the refrigerant mixture. According to the invention, a gas fraction ( 9 ) that is identical or similar in composition is added at least from time to time to the gas fraction ( 4 ) that has been obtained in the separation (D). In doing so, the addition of the gas fraction ( 9 ) that is identical or similar in composition takes place when a minimum amount of the gas fraction ( 4 ) obtained in the separation (D) of the refrigerant mixture is not reached.