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    12.
    发明专利
    未知

    公开(公告)号：NO20061751L

    公开(公告)日：2006-06-22

    申请号：NO20061751

    申请日：2006-04-20

    Applicant: STATOIL ASA

    Inventor： PETTERSEN JOSTEIN ,  PAUROLA PENTTI ,  FREDHEIM ARNE OLAV ,  BAUER HEINZ ,  BOLT MANFRED ,  SAPPER RAINER ,  FRANKE HUBERT ,  SCHIER M

    IPC: F25B7/00 ,  F25B1/10 ,  F25B5/02 ,  F25B9/00 ,  F25J1/02

    Abstract: A method of liquefying a hydrocarbon-rich gas, wherein the gas flows through a cascade of three refrigeration stages, each stage comprising a refrigerant circuit and a compressor, wherein at least part of the flow of refrigerant from the second circuit is used for the pre-cooling of the hydrocarbon rich gas in the first refrigeration stage. This balances the load on each of the compressors. By standardizing the drive units and compressors of the three coolant circuits, it is possible to maximize the attainable liquefaction capacity of the liquefaction process using tried-and-trusted drive units and compressors respectively. This method can be applied to mixed refrigerant cascades and circuits with a carbon dioxide pre-cooling circuit. This latter option has benefits for offshore use where large amounts of hydrocarbons are undesirable.

    Method for liquefying a hydrocarbon-rich flow while simultaneously obtaining a cless thansbgreater than3less than/sbgreater than/cless thansbgreater than4less than/sbgreater than-rich fraction
    15.
    发明专利
    Method for liquefying a hydrocarbon-rich flow while simultaneously obtaining a cless thansbgreater than3less than/sbgreater than/cless thansbgreater than4less than/sbgreater than-rich fraction 未知

    公开(公告)号：AU2003281633A8

    公开(公告)日：2004-02-09

    申请号：AU2003281633

    申请日：2003-07-01

    Applicant: LINDE AG ,  STATOIL ASA

    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 ).]

    METHOD FOR COMPRESSING A MULTI-CONSTITUENT FLOW
    17.
    发明专利
    METHOD FOR COMPRESSING A MULTI-CONSTITUENT FLOW 未知

    公开(公告)号：AU2003206897A1

    公开(公告)日：2003-09-04

    申请号：AU2003206897

    申请日：2003-02-14

    Applicant: LINDE AG ,  STATOIL ASA

    Inventor： PAUROLA PENTTI ,  STOCKMANN RUDOLF ,  GWINNER MARTIN

    IPC: F04B39/16 ,  F25B9/00 ,  F25B41/04 ,  F25B43/00 ,  F25J1/02

    Abstract: The invention relates to a method for compressing a multi-constituent flow, particularly a coolant mixture flow whereby, before compression, the multi-constituent flow is, inside a separating device, freed from liquid possibly contained in the multi-constituent flow to be compressed. According to the invention, a partial flow (5, 6, 8) of the compressed multi-component flow (3, 4) is fed at least occasionally to the separating device (D). The partial flow (5, 6, 8) fed to the separating device (D) can be diverted from the compressed multi-component flow (3, 4) before and/or after being subjected to a cooling (E) that ensues after compression (V).

    Natural gas liquefaction process
    18.
    发明专利
    Natural gas liquefaction process 未知

    公开(公告)号：AU2004274706B2

    公开(公告)日：2008-08-07

    申请号：AU2004274706

    申请日：2004-09-23

    Applicant: LINDE AG ,  STATOIL ASA

    Inventor： FRANKE HUBERT ,  PETTERSEN JOSTEIN ,  BOLT MANFRED ,  BAUER HEINZ ,  PAUROLA PENTTI ,  SCHIER MARC ,  SAPPER RAINER ,  FREDHEIM ARNE OLAV

    IPC: F25B1/10 ,  F25B5/02 ,  F25B9/00 ,  F25J1/02

    Abstract: A method of liquefying a hydrocarbon-rich gas, wherein the gas flows through a cascade of three refrigeration stages, each stage comprising a refrigerant circuit and a compressor, wherein at least part of the flow of refrigerant from the second circuit is used for the pre-cooling of the hydrocarbon rich gas in the first refrigeration stage. This balances the load on each of the compressors. By standardizing the drive units and compressors of the three coolant circuits, it is possible to maximize the attainable liquefaction capacity of the liquefaction process using tried-and-trusted drive units and compressors respectively. This method can be applied to mixed refrigerant cascades and circuits with a carbon dioxide pre-cooling circuit. This latter option has benefits for offshore use where large amounts of hydrocarbons are undesirable.

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