EP1393812A1 - Multi-chamber hydrocyclone separator - Google Patents

Multi-chamber hydrocyclone separator Download PDF

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Publication number
EP1393812A1
EP1393812A1 EP03018826A EP03018826A EP1393812A1 EP 1393812 A1 EP1393812 A1 EP 1393812A1 EP 03018826 A EP03018826 A EP 03018826A EP 03018826 A EP03018826 A EP 03018826A EP 1393812 A1 EP1393812 A1 EP 1393812A1
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Prior art keywords
hydrocyclone separator
oil
highly
separator according
resistant plastic
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EP03018826A
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German (de)
French (fr)
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Hans-Peter Kämpfer
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/085—Vortex chamber constructions with wear-resisting arrangements

Definitions

  • the invention relates to a multi-chamber Hydrocyclone separator with a large number of individual Hydrocyclones for the separation of solids or Liquids from liquids, especially for separation of oil from an oil-water-sand mixture like it in oil production in the off-shore area, whereby the hydrocyclone separator is an inlet opening for the Oil-water-sand mixture, an outlet opening for the water carrying the sand and an outlet opening for the oil.
  • hydrocyclone separators of the aforementioned type deposits on the surfaces of the individual hydrocyclones.
  • the interior of the chambers of the Hydrocyclone separators narrowed at the relevant points. This leads to a lower performance of the hydrocyclone separator.
  • the deposits eventually lead to that within relatively short intervals individual hydrocyclones or the entire hydrocyclone separator need to be replaced. This results in very frequent downtimes for those concerned Installations, which causes considerable costs.
  • a cleaning of the relevant parts from the deposits would require a very high level of chemical and abrasive Require detergents.
  • the invention is based, which in the known hydrocyclone separators and the exchange that becomes necessary individual hydrocyclones or the entire hydrocyclone separator to prevent or at least significantly reduce to achieve a longer service life.
  • the task is solved by one Hydrocyclone separator of the type mentioned in the that the surfaces of the individual hydrocyclones with a layer of a highly slidable and highly wear-resistant Plastic are provided.
  • the layer of highly slidable and highly wear-resistant Plastic causes it to surface on the hydrocyclones solid particles reaching the smooth Slip off the plastic layer and do not stick can.
  • the formation of deposits on the Prevents hydrocyclones As a result, they always remain original cross sections and thus the original Get flow rates. It is therefore in the extreme case only at very large intervals the hydrocyclones must be replaced.
  • PTFE polytetrafluoroethylene
  • the thickness of the layer expediently consists of highly slidable and highly wear-resistant plastic at least 8 ⁇ m, preferably about 17 ⁇ m.
  • the individual hydrocyclones before Applying the layer of a highly lubricious and highly wear-resistant plastic has a rough surface on.
  • the roughness is sufficient Surface of the individual hydrocyclones by appropriate mechanical processing, for example by to form a grinding process.
  • the roughness of the surface of the individual hydrocyclones can also be done in a simple manner by laser treatment or can be achieved by an etching process.
  • Hydrocyclone separators will increase the roughness of the Surface of the individual hydrocyclones by thermal Spraying of hard material granules achieved.
  • the hydrocyclone separator 1 shown in FIG. 1 has a first chamber 2 into which through an inlet opening 3 the oil-water-sand mixture enters.
  • Water can be sea water, for example.
  • the first chamber 2 there are a large number of individual ones Hydrocyclones 4, only a few of which are shown are.
  • the oil-water-sand mixture passes into the Hydrocyclones 4 provided openings 5 in the hydrocyclones 4, in which the oil from the sand-bearing water is deposited.
  • the sand-bearing water emerges from the ends of the hydrocyclones projecting into a second chamber 6 4 and thus first reaches the second Chamber 6. From there, the sand-bearing water is over disposed of an outlet opening 7.
  • the oil occurs on the other End of the hydrocyclones 4 and enters one third chamber 8. From there the oil is passed through a Discharge opening 9 deducted.
  • Fig. 2 In the hydrocyclone 4 shown in Fig. 2 is one Layer 10 made of a highly slidable and highly wear-resistant Plastic indicated by dash-dotted lines. As can be seen from Fig. 2, extends the layer 10 from the highly slidable and highly wear-resistant Plastic along the entire length of the Hydrocyclones 4.

Abstract

A hydrocyclone separator (1) comprises a number of single hydrocyclones (4) for removing solid materials or liquids from liquids, especially for removing oil from an oil-water-sand mixture produced during offshore oil recovery, an inlet opening (3) for the oil-water-sand mixture, and an outlet opening (9) for the oil. A hydrocyclone separator (1) comprises a number of single hydrocyclones (4) for removing solid materials or liquids from liquids, especially for removing oil from an oil-water-sand mixture produced during offshore oil recovery, an inlet opening (3) for the oil-water-sand mixture, and an outlet opening (9) for the oil. The surfaces of the single hydrocyclones are provided with a layer made from a high sliding high wear resistant plastic.

Description

Die Erfindung betrifft einen mehrere Kammern aufweisenden Hydrozyklonseparator mit einer Vielzahl einzelner Hydrozyklone zum Abscheiden von festen Stoffen oder von Flüssigkeiten aus Flüssigkeiten, insbesondere zum Abscheiden von Öl aus einem Öl-Wasser-Sand-Gemisch, wie es bei der Ölgewinnung im Off-Shore-Bereich anfällt, wobei der Hydrozyklonseparator eine Eintrittsöffnung für das Öl-Wasser-Sand-Gemisch, eine Austrittsöffnung für das den Sand mitführende Wasser und eine Austrittsöffnung für das Öl aufweist.The invention relates to a multi-chamber Hydrocyclone separator with a large number of individual Hydrocyclones for the separation of solids or Liquids from liquids, especially for separation of oil from an oil-water-sand mixture like it in oil production in the off-shore area, whereby the hydrocyclone separator is an inlet opening for the Oil-water-sand mixture, an outlet opening for the water carrying the sand and an outlet opening for the oil.

Bei Hydrozyklonseparatoren der vorgenannten Art kommt es an den Oberflächen der einzelnen Hydrozyklone zu Ablagerungen. Dadurch wird der Innenraum der Kammern des Hydrozyklonseparators an den betreffenden Stellen verengt. Dies führt zu einer geringeren Leistung des Hydrozyklonseparators. Die Ablagerungen führen schließlich dazu, dass innerhalb verhältnismäßig kurzer Zeitabstände einzelne Hydrozyklone oder der gesamte Hydrozyklonseparator ausgewechselt werden müssen. Dadurch ergeben sich sehr häufige Stillstandzeiten für die betreffenden Anlagen, wodurch erhebliche Kosten verursacht werden. Ein Reinigen der betreffenden Teile von den Ablagerungen würde einen sehr hohen Aufwand an chemischen und abrasiven Reinigungsmitteln erfordern.It happens with hydrocyclone separators of the aforementioned type deposits on the surfaces of the individual hydrocyclones. As a result, the interior of the chambers of the Hydrocyclone separators narrowed at the relevant points. This leads to a lower performance of the hydrocyclone separator. The deposits eventually lead to that within relatively short intervals individual hydrocyclones or the entire hydrocyclone separator need to be replaced. This results in very frequent downtimes for those concerned Installations, which causes considerable costs. A cleaning of the relevant parts from the deposits would require a very high level of chemical and abrasive Require detergents.

Der Erfindung liegt die Aufgabe zugrunde, die bei den bekannten Hydrozyklonseparatoren auftretenden Ablagerungen und den dadurch erforderlich werdende Austausch einzelner Hydrozyklone oder des gesamten Hydrozyklonseparator zu verhindern oder zumindest wesentlich zu verringern um höhere Standzeiten zu erzielen.The invention is based, which in the known hydrocyclone separators and the exchange that becomes necessary individual hydrocyclones or the entire hydrocyclone separator to prevent or at least significantly reduce to achieve a longer service life.

Die Lösung der gestellten Aufgabe besteht bei einem Hydrozyklonseparator der eingangs genannten Art darin, dass die Oberflächen der einzelnen Hydrozyklone mit einer Schicht aus einem hochgleitfähigen und hochverschleißfesten Kunststoff versehen sind.The task is solved by one Hydrocyclone separator of the type mentioned in the that the surfaces of the individual hydrocyclones with a layer of a highly slidable and highly wear-resistant Plastic are provided.

Die Schicht aus hochgleitfähigem und hochverschleißfestem Kunststoff bewirkt, dass an die Oberfläche der Hydrozyklone gelangende Feststoffpartikel an der glatten Kunststoffschicht abgleiten und sich nicht festsetzen können. Somit wird die Bildung von Ablagerungen an den Hydrozyklonen verhindert. Dadurch bleiben stets die ursprünglichen Querschnitte und damit auch die ursprünglichen Fließgeschwindigkeiten erhalten. Es ist daher im äußersten, Fall nur noch in sehr großen Zeitabständen ein Auswechseln der Hydrozyklone erforderlich.The layer of highly slidable and highly wear-resistant Plastic causes it to surface on the hydrocyclones solid particles reaching the smooth Slip off the plastic layer and do not stick can. Thus, the formation of deposits on the Prevents hydrocyclones. As a result, they always remain original cross sections and thus the original Get flow rates. It is therefore in the extreme case only at very large intervals the hydrocyclones must be replaced.

Soweit sich an wenigen Stellen einzelner Hydrozyklone doch noch geringfügige Ablagerungen bilden sollten, ermöglicht die Schicht aus dem hochgleitfähigen und hochverschleißfesten Kunststoff, bei einer Wartung des Hydrozyklonseparators die von den Ablagerungen betroffenen Stellen der einzelnen Hydrozyklone durch einen einfachen Waschvorgang, durch den die Umwelt nicht belastet wird, zu reinigen.So much for individual hydrocyclones in a few places should still form minor deposits, enables the layer of the highly slidable and highly wear-resistant plastic, during maintenance of the Hydrocyclone separators those affected by the deposits Place the individual hydrocyclones by one simple washing process through which the environment does not is charged to clean.

In Ausgestaltung der Erfindung besteht der hochgleitfähige und hochverschleißfeste Kunststoff aus Polytetrafluorethylen (PTFE). Der unter dem Handelsnamen Teflon bekannte Werkstoff PTFE besitzt besonders gute Gleiteigenschaften bei sehr hoher Verschleißfestigkeit und weist daher ausgezeichnete Antihafteigenschaften auf.In an embodiment of the invention there is the highly slidable and highly wear-resistant plastic made of polytetrafluoroethylene (PTFE). The one under the trade name Teflon well-known material PTFE has particularly good sliding properties with very high wear resistance and therefore has excellent non-stick properties.

Zweckmäßigerweise beträgt die Dicke der Schicht aus dem hochgleitfähigen und hochverschleißfesten Kunststoff mindestens 8 µm, vorzugsweise etwa 17 µm.The thickness of the layer expediently consists of highly slidable and highly wear-resistant plastic at least 8 µm, preferably about 17 µm.

Ein besonders gutes Ergebnis bezüglich des Abgleitens von Feststoffpartikeln von der Schicht aus hochgleitfähigem und hochverschleißfestem Kunststoff wird dadurch erzielt, dass dem hochgleitfähigen und hochverschleißfesten Kunststoff filmbildende Harze und/oder mineralische Füllstoffe beigefügt sind.A particularly good result in terms of sliding of solid particles from the layer of highly lubricious and highly wear-resistant plastic achieved that the highly slidable and highly wear-resistant Plastic film-forming resins and / or mineral Fillers are added.

Um eine gute Haftung des Kunststoffs an den Oberflächen der Hydrozyklone zu erzielen, weisen nach einem weiteren Merkmal der Erfindung die einzelnen Hydrozyklone vor dem Aufbringen der Schicht aus einem hochgleitfähigen und hochverschleißfesten Kunststoff eine raue Oberfläche auf.To ensure good adhesion of the plastic to the surfaces to achieve the hydrocyclones point to another Feature of the invention, the individual hydrocyclones before Applying the layer of a highly lubricious and highly wear-resistant plastic has a rough surface on.

In den meisten Fällen reicht es aus, die Rauigkeit der Oberfläche der einzelnen Hydrozyklone durch entsprechende mechanische Bearbeitung, beispielsweise durch einen Schleifvorgang zu bilden.In most cases, the roughness is sufficient Surface of the individual hydrocyclones by appropriate mechanical processing, for example by to form a grinding process.

Die Rauigkeit der Oberfläche der einzelnen Hydrozyklone kann aber auch in einfacher Weise durch eine Laserbehandlung oder durch einen Ätzvorgang erzielt werden.The roughness of the surface of the individual hydrocyclones can also be done in a simple manner by laser treatment or can be achieved by an etching process.

Bei einer bevorzugten Ausführungsform des erfindungsgemäßen Hydrozyklonseparators wird die Rauigkeit der Oberfläche der einzelnen Hydrozyklone durch thermisches Aufspritzen von Hartstoffgranulat erzielt. In a preferred embodiment of the invention Hydrocyclone separators will increase the roughness of the Surface of the individual hydrocyclones by thermal Spraying of hard material granules achieved.

In der Zeichnung ist ein Ausführungsbeispiel eines erfindungsgemäßen Hydrozyklonseparators dargestellt und nachstehend näher erläutert. Es zeigen, jeweils in schematischer Darstellung:

  • Fig. 1 einen Hydrozyklonseparator in einem Längsschnitt;
  • Fig. 2 einen einzelnen Hydrozyklon in Seitenansicht.
    • In the drawing, an embodiment of a hydrocyclone separator according to the invention is shown and explained in more detail below. Each shows in a schematic representation:
  • 1 shows a hydrocyclone separator in a longitudinal section.
  • Fig. 2 shows a single hydrocyclone in side view.

    • Der in Fig.1 dargestellte Hydrozyklonseparator 1 weist eine erste Kammer 2 auf, in die durch eine Eintrittsöffnung 3 das Öl-Wasser-Sand-Gemisch eintritt. Bei dem Wasser kann es sich beispielsweise um Seewasser handeln. In der ersten Kammer 2 befindet sich eine Vielzahl einzelner Hydrozyklone 4, von denen nur einige dargestellt sind. Das Öl-Wasser-Sand-Gemisch gelangt über in den Hydrozyklonen 4 vorgesehene Öffnungen 5 in die Hydrozyklone 4, in denen das Öl von dem sandführenden Wasser abgeschieden wird. Das sandführende Wasser tritt aus den in eine zweite Kammer 6 hineinragenden Enden der Hydrozyklone 4 aus und gelangt somit zunächst in die zweite Kammer 6. Von dort wird das sandführende Wasser über eine Austrittsöffnung 7 entsorgt. Das Öl tritt am anderen Ende der Hydrozyklone 4 aus und gelangt in eine dritte Kammer 8. Von dort wird das Öl über eine Austrittsöffnung 9 abgezogen.The hydrocyclone separator 1 shown in FIG. 1 has a first chamber 2 into which through an inlet opening 3 the oil-water-sand mixture enters. In which Water can be sea water, for example. In the first chamber 2 there are a large number of individual ones Hydrocyclones 4, only a few of which are shown are. The oil-water-sand mixture passes into the Hydrocyclones 4 provided openings 5 in the hydrocyclones 4, in which the oil from the sand-bearing water is deposited. The sand-bearing water emerges from the ends of the hydrocyclones projecting into a second chamber 6 4 and thus first reaches the second Chamber 6. From there, the sand-bearing water is over disposed of an outlet opening 7. The oil occurs on the other End of the hydrocyclones 4 and enters one third chamber 8. From there the oil is passed through a Discharge opening 9 deducted.

    Bei dem in Fig. 2 dargestellten Hydrozyklon 4 ist eine Schicht 10 aus einem hochgleitfähigen und hochverschleißfesten Kunststoff durch strichpunktierte Linien angedeutet. Wie aus Fig. 2 zu ersehen ist, erstreckt sich die Schicht 10 aus dem hochgleitfähigen und hochverschleißfesten Kunststoff über die gesamte Länge der Hydrozyklone 4.In the hydrocyclone 4 shown in Fig. 2 is one Layer 10 made of a highly slidable and highly wear-resistant Plastic indicated by dash-dotted lines. As can be seen from Fig. 2, extends the layer 10 from the highly slidable and highly wear-resistant Plastic along the entire length of the Hydrocyclones 4.

    Claims (10)

    Mehrere Kammern aufweisender Hydrozyklonseparator mit einer Vielzahl einzelner Hydrozyklone zum Abscheiden von festen Stoffen oder von Flüssigkeiten aus Flüssigkeiten, insbesondere zum Abscheiden von Öl aus einem Öl-Wasser-Sand-Gemisch, wie es bei der Ölgewinnung im Off-Shore-Bereich anfällt, wobei der Hydrozyklonseparator eine Eintrittsöffnung für das Öl-Wasser-Sand-Gemisch, eine Austrittsöffnung für das den Sand mitführende Wasser und eine Austrittsöffnung für das Öl aufweist,
    dadurch gekennzeichnet, dass die Oberflächen der einzelnen Hydrozyklone mit einer Schicht aus einem hochgleitfähigen und hochverschleißfesten Kunststoff versehen sind.    Multi-chamber hydrocyclone separator with a large number of individual hydrocyclones for separating solids or liquids from liquids, in particular for separating oil from an oil-water-sand mixture, as occurs in offshore oil extraction, the Hydrocyclone separator has an inlet opening for the oil-water-sand mixture, an outlet opening for the water carrying the sand and an outlet opening for the oil,
    characterized in that the surfaces of the individual hydrocyclones are provided with a layer of a highly slidable and highly wear-resistant plastic.         Hydrozyklonseparator nach Anspruch 1, dadurch gekennzeichnet, dass der hochgleitfähige und hochverschleißfeste Kunststoff aus Polytetrafluorethylen (PTFE) besteht.Hydrocyclone separator according to claim 1, characterized in that the highly slidable and highly wear-resistant plastic consists of polytetrafluoroethylene (PTFE). Hydrozyklonseparator nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Dicke der Schicht aus dem hochgleitfähigen und hochverschleißfesten Kunststoff mindestens 8 µm beträgt.Hydrocyclone separator according to claim 1 or 2, characterized in that the thickness of the layer made of the highly slidable and highly wear-resistant plastic is at least 8 µm. Hydrozyklonseparator nach Anspruch 3, dadurch gekennzeichnet, dass die Dicke der Schicht aus dem hochgleitfähigen und hochverschleißfesten Kunststoff etwa 17 µm beträgt.Hydrocyclone separator according to claim 3, characterized in that the thickness of the layer made of the highly slidable and highly wear-resistant plastic is approximately 17 µm. Hydrozyklonseparator nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet dass dem hochgleitfähigen und hochverschleißfesten Kunststoff filmbildende Harze und/oder mineralische Füllstoffe beigefügt sind.Hydrocyclone separator according to one of claims 1 to 4, characterized in that film-forming resins and / or mineral fillers are added to the highly slidable and highly wear-resistant plastic. Hydrozyklonseparator nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet dass die einzelnen Hydrozyklone vor dem Aufbringen der Schicht aus einem hochgleitfähigen und hochverschleißfesten Kunststoff eine raue Oberfläche aufweisen.Hydrocyclone separator according to one of claims 1 to 5, characterized in that the individual hydrocyclones have a rough surface before applying the layer made of a highly slidable and highly wear-resistant plastic. Hydrozyklonseparator nach Anspruch 6, dadurch gekennzeichnet, dass die Rauigkeit der Oberfläche der einzelnen Hydrozyklone durch entsprechende mechanische Bearbeitung, beispielsweise durch einen Schleifvorgang gebildet ist.Hydrocyclone separator according to claim 6, characterized in that the roughness of the surface of the individual hydrocyclones is formed by appropriate mechanical processing, for example by a grinding process. Hydrozyklonseparator nach Anspruch 6, dadurch gekennzeichnet, dass die Rauigkeit der Oberfläche der einzelnen Hydrozyklone durch eine Laserbehandlung erzielt wird.Hydrocyclone separator according to claim 6, characterized in that the roughness of the surface of the individual hydrocyclones is achieved by laser treatment. Hydrozyklonseparator nach Anspruch 6, dadurch gekennzeichnet, dass die Rauigkeit der Oberfläche der einzelnen Hydrozyklone durch einen Ätzvorgang erzielt wird.Hydrocyclone separator according to claim 6, characterized in that the roughness of the surface of the individual hydrocyclones is achieved by an etching process. Hydrozyklonseparator nach Anspruch 6, dadurch gekennzeichnet, dass die Rauigkeit der Oberfläche der einzelnen Hydrozyklone durch thermisches Aufspritzen von Hartstoffgranulat erzielt wird.Hydrocyclone separator according to claim 6, characterized in that the roughness of the surface of the individual hydrocyclones is achieved by thermal spraying of hard material granules.
    EP03018826A 2002-08-24 2003-08-19 Multi-chamber hydrocyclone separator Withdrawn EP1393812A1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10239359 2002-08-24
    DE10239359A DE10239359A1 (en) 2002-08-24 2002-08-24 Hydrocyclone separator for removing oil from an oil-water-sand mixture produced during offshore oil recovery comprises single hydrocyclones provided with layer made from high sliding high wear resistant plastic

    Publications (1)

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    EP1393812A1 true EP1393812A1 (en) 2004-03-03

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    EP03018826A Withdrawn EP1393812A1 (en) 2002-08-24 2003-08-19 Multi-chamber hydrocyclone separator

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    US (1) US20070215541A1 (en)
    EP (1) EP1393812A1 (en)
    DE (1) DE10239359A1 (en)
    NO (1) NO20033465D0 (en)

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    US20070215541A1 (en) 2007-09-20
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