Additive zur Inhibierung der Gashydratbildung
    61.
    发明公开
    Additive zur Inhibierung der Gashydratbildung 有权
    添加剂用于抑制气体水合物形成

    公开(公告)号:EP1243637A2

    公开(公告)日:2002-09-25

    申请号:EP02005587.7

    申请日:2002-03-12

    申请人: Clariant GmbH

    IPC分类号: C10L3/06 E21B37/06

    摘要: Gegenstand der Erfindung ist die Verwendung von Verbindungen der Formel (1)
    worin

    R 1 C 1 - bis C 24 -Alkyl, C 2 - bis C 24 -Alkenyl oder einen C 6 - bis C 18 -Arylrest, der mit einer C 1 - bis C 12 -Alkylgruppe substituiert sein kann,
    R 2 , R 3 unabhängig voneinander Wasserstoff, C 1 - bis C 18 -Alkyl, C 5 - bis C 7 -Cycloalkyl, oder R 2 und R 3 , unter Einschluss des Stickstoffatoms, an das sie gebunden sind, einen Ring von 4 bis 8 Ringatomen, in dem außer Kohlenstoff auch Sauerstoff- oder Stickstoffatome enthalten sein können,
    A gleichartige oder verschiedene C 2 - bis C 4 -Alkylenreste,
    B C 1 - bis C 7 -Alkylen,
    n eine ganze Zahl von 1 - 40
    bedeuten als Gashydratinhibitoren.

    摘要翻译: 本发明涉及(1)其中R <1>式I化合物的:C1至C24烷基,C2至C24烯基或C6至C18芳基由C 1取代的 C12烷基可以被取代,R <2>,R <3>:各自独立地为氢,C 1至C 18烷基,C 5至C 7环烷基,或R <2>和R <3>,包括氮原子 它们所连接的形式,其中除了碳和氧或氮原子可以被包括在4至8个环原子的环:相同或不同的C 2 -C 4亚烷基,B:C1至C7的亚烷基,正 :整数1 - 平均40作为气体水合物抑制剂。

    Procédé pour retarder la croissance et/ou l'agglomération d'hydrates dans un effluent de production
    63.
    发明公开
    Procédé pour retarder la croissance et/ou l'agglomération d'hydrates dans un effluent de production 审中-公开
    一种用于水合物的生长和/或附聚的在生产流中的延迟处理

    公开(公告)号:EP0922751A1

    公开(公告)日:1999-06-16

    申请号:EP98402871.2

    申请日:1998-11-19

    IPC分类号: C10L3/00 E21B37/06

    CPC分类号: C10L3/00 F16L55/24 F17D1/05

    摘要: On décrit un procédé pour retarder la croissance et/ou l'agglomération des hydrates au sein d'un fluide comprenant de l'eau et des gaz par addition d'inhibiteurs de croissance et/ou d'agglomération des hydrates de gaz comprenant un polymère essentiellement hydrosoluble caractérisé par un nombre total de degrés de liberté de rotation par unité de répétition statistique RDFTm supérieur à 9 et de préférence supérieur à 10, et un degré de répétition DP de l'unité de répétition statistique compris entre 18/RDFTm et 200 000, de préférence compris entre 20/RDFTm et 100 000.
    Le ou les inhibiteurs de croissance et/ou d'agglomération sont incorporés au fluide à traiter en général à une concentration de 0,05 % à 5 % en masse par rapport à la teneur en eau du milieu.

    METHOD FOR INHIBITING HYDRATE FORMATION
    64.
    发明授权
    METHOD FOR INHIBITING HYDRATE FORMATION 失效
    用于预防水合物

    公开(公告)号:EP0809619B1

    公开(公告)日:1999-02-03

    申请号:EP96918323.5

    申请日:1996-06-06

    IPC分类号: C07C7/20 F17D1/05 C10L3/00

    摘要: A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The hydrate inhibitor used for practicing the method is selected from the family of substantially water soluble copolymers formed from N-methyl-N-vinylacetamide (VIMA) and one of three comonomers, vinylpyrrolidone (VP), vinylpiperidone (VPip), or vinylcaprolactam (VCap). VIMA/VCap is the preferred copolymer. These copolymers may be used alone or in combination with each other or other hydrate inhibitors. Preferably, a solvent, such as water, brine, alcohol, or mixtures thereof, is used to produce an inhibitor solution or mixture to facilitate treatment of the petroleum fluid stream.

    METHOD FOR INHIBITING HYDRATE FORMATION
    65.
    发明授权
    METHOD FOR INHIBITING HYDRATE FORMATION 失效
    用于预防水合物

    公开(公告)号:EP0812307B1

    公开(公告)日:1998-12-30

    申请号:EP96919194.9

    申请日:1996-06-06

    摘要: Clathrate hydrate formation in petroleum fluid streams is inhibited by adding water soluble polymers having N-vinyl amide or N-allyl amide units to the streams. Each N-vinyl amide and N-allyl amide unit has two substituent groups, R1 and R2, substituted on the nitrogen where R1 is a hydrogen or hydrocarbon group having one to six carbon atoms and zero to two heteroatoms selected from the group consisting of oxygen, nitrogen, and combinations thereof, where R2 is a hydrocarbon group having one to six carbon atoms and zero to two heteroatoms selected from the group consisting of oxygen, nitrogen, and combinations thereof, and where the sum total of carbon atoms in R1 and R2 is greater than or equal to one, but less than eight. Some preferred examples of such polymers include copolymers of N-vinyl amides and substituted acrylamides. Specific examples of such copolymers include, N-methyl-N-vinylacetamide (VIMA) copolymerized with acryloylpyrrolidine (APYD) or acryloylpiperidine (APID) and more preferably, VIMA copolymerized with N-substituted methacrylamides such as N-isopropylmethacrylamide (iPMAM) and methacryloylpyrrolidine (MAPYD).

    METHOD FOR INHIBITING HYDRATE FORMATION
    66.
    发明公开
    METHOD FOR INHIBITING HYDRATE FORMATION 失效
    用于抑制形成水合物的

    公开(公告)号:EP0850209A1

    公开(公告)日:1998-07-01

    申请号:EP96918449.0

    申请日:1996-06-07

    IPC分类号: F17D1 C07C7 C08F20 C08F26 C09K8 C10L3

    摘要: A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents involves treating the fluid with an inhibitor comprising a substantially water soluble polymer having a polymer backbone with a pendant C1-C3 alkyl group; the polymer having an average molecular weight between about 1,000 and about 6,000,000. Preferably, the pendant alkyl group is a methyl group. The rate of nucleation, growth, and/or agglomeration of gas hydrate crystals in a petroleum fluid stream is reduced using the alkylated polymer backbone inhibitor, thereby inhibiting the formation of a hydrate blockage in the pipe conveying the petroleum fluid stream. Test results are disclosed which unexpectedly show that alkylating the polymer backbone with a methyl group will produce a subcooling for the alkylated polymer that is at least about 2 °F (about 1.1 °C) greater than its nonalkylated counterpart. The inhibitor can be used conveniently at low concentrations, for example in the range of from about 0.01 % to about 5 % by weight of the water present in the oil or gas stream, to effectively treat a petroleum fluid having a water phase.

    METHOD FOR INHIBITING HYDRATE FORMATION
    67.
    发明公开
    METHOD FOR INHIBITING HYDRATE FORMATION 失效
    用于预防水合物

    公开(公告)号:EP0812307A1

    公开(公告)日:1997-12-17

    申请号:EP96919194.0

    申请日:1996-06-06

    摘要: Clathrate hydrate formation in petroleum fluid streams is inhibited by adding water soluble polymers having N-vinyl amide or N-allyl amide units to the streams. Each N-vinyl amide and N-allyl amide unit has two substituent groups, R1 and R2, substituted on the nitrogen where R1 is a hydrogen or hydrocarbon group having one to six carbon atoms and zero to two heteroatoms selected from the group consisting of oxygen, nitrogen, and combinations thereof, where R2 is a hydrocarbon group having one to six carbon atoms and zero to two heteroatoms selected from the group consisting of oxygen, nitrogen, and combinations thereof, and where the sum total of carbon atoms in R1 and R2 is greater than or equal to one, but less than eight. Some preferred examples of such polymers include copolymers of N-vinyl amides and substituted acrylamides. Specific examples of such copolymers include, N-methyl-N-vinylacetamide (VIMA) copolymerized with acryloylpyrrolidine (APYD) or acryloylpiperidine (APID) and more preferably, VIMA copolymerized with N-substituted methacrylamides such as N-isopropylmethacrylamide (iPMAM) and methacryloylpyrrolidine (MAPYD).

    Procédé et dispositif pour le traitement d'un gaz naturel
    68.
    发明公开
    Procédé et dispositif pour le traitement d'un gaz naturel 失效
    Verfahren und Vorrichtung zum Behandeln einesnatürlichenGases。

    公开(公告)号:EP0442767A1

    公开(公告)日:1991-08-21

    申请号:EP91400092.2

    申请日:1991-01-16

    IPC分类号: F17D1/00 F17D1/05 E21B43/34

    CPC分类号: F17D1/05 E21B43/34 F17D1/005

    摘要: On décrit un procédé et un dispositif de transport et de traitement d'un gaz naturel.
    Selon le procédé de l'invention, on contacte danz une zone G₁ le gaz sortant d'un puits de production (1) avec une phase liquide provenant au moins en partie d'un recyclage (4) et renfermant de l'eau et au moins un additif anticorrosion et/ou au moins un additif antihydraté au moins en partie miscible à l'eau et se vaporisant à l'état pur ou sous forme d'azéotrope; on transporte la phase gazeuse chargée d'additif dans une conduite (5), on la refroidit en E₁, on sépare en B₁ une phase aqueuse du gaz non condensé que l'on recueille par une conduite (10) et on recycle par la ligne (9,4) la phase aqueuse chargée d'additif dans la zone de contact G₁.
    Application au transport du gaz naturel sur de longues distances notamment.

    摘要翻译: 描述了用于运输和处理天然气的方法和装置。 ...根据本发明的方法,在区域G1中,使从生产井(1)出来的气体至少部分地由再循环操作(4)产生并且含有水并在 至少一种抗腐蚀添加剂和/或至少一种抗水合添加剂,其至少部分地与水混溶并汽化成纯态或共沸形式; 装载有添加剂的气相在管道(5)中输送,在E1冷却,由管道(10)收集的非冷凝气体的水相在B1处被分离,水相装入 添加剂通过管线(9,4)再循环到接触区域G1中。 ...特别适用于长距离运输天然气。 ... ...

    REFRIGERATION FROM EXPANSION OF TRANSMISSION PIPELINE GAS.
    69.
    发明公开
    REFRIGERATION FROM EXPANSION OF TRANSMISSION PIPELINE GAS. 失效
    冷却BY EXTENSION行气。

    公开(公告)号:EP0244400A4

    公开(公告)日:1988-10-20

    申请号:EP85905474

    申请日:1985-10-22

    CPC分类号: F17D1/07 F17D1/05 F25B9/06

    摘要: Refrigeration is produced while delivering transmission pipeline gas (20) of elevated pressure to a branch pipeline of lower pressure by expanding the gas in a turbo-expander (29) to a pressure below the branch pipeline (47) pressure and recovering refrigeration from the expanded gas which is then compressed by a centrifugal compressor (41) directly driven by the turbo-expander (29) to the pressure required for delivery into the branch pipeline (47). The gas (20) is dehydrated by adding methanol through pump (24), and separating aqueous methanol condensate from the expanded gas in separator (31), and the condensate is distilled in column (55) with compression heat in reboiler (64) to recover methanol for reuse.