WO1990012156A1 - Procede d'extraction de petrole de la surface d'un melange eau/petrole recueilli dans une cuve receptrice a l'interieur d'un bateau collecteur de petrole et bateau collecteur de petrole - Google Patents

Procede d'extraction de petrole de la surface d'un melange eau/petrole recueilli dans une cuve receptrice a l'interieur d'un bateau collecteur de petrole et bateau collecteur de petrole Download PDF

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Publication number
WO1990012156A1
WO1990012156A1 PCT/FI1989/000661 FI8900661W WO9012156A1 WO 1990012156 A1 WO1990012156 A1 WO 1990012156A1 FI 8900661 W FI8900661 W FI 8900661W WO 9012156 A1 WO9012156 A1 WO 9012156A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
water
receiver
container
turbulence
Prior art date
Application number
PCT/FI1989/000661
Other languages
English (en)
Inventor
Kalervo Virtanen
Original Assignee
Kalervo Virtanen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kalervo Virtanen filed Critical Kalervo Virtanen
Publication of WO1990012156A1 publication Critical patent/WO1990012156A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/10—Devices for removing the material from the surface
    • E02B15/104—Conveyors; Paddle wheels; Endless belts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/10—Devices for removing the material from the surface
    • E02B15/105—Archimedian screws
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/204—Keeping clear the surface of open water from oil spills

Definitions

  • the invention relates to a method of removing oil from the surface of a water/oil mixture gathered in a receiver in an oil collecting vessel.
  • the in ⁇ vention is further concerned with an oil collecting vessel applying the method.
  • the oil-containing water can be transported as such for further processing at some other location. How- ever, the holding capacity of the oil collecting vessel is restricted, wherefore it is desirable to separate water and oil as efficiently as possible, so that the size of the water area to be cleaned can be increased, thus increasing the effective operative time of the oil collecting vessel.
  • Swedish Patent Applications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the published publications having the brinedamente 375 125 and 401 005 disclose an oil collecting vessel comprising a receiver into which the mixture of oil and water is introduced; pump means for pumping oil from the receiver; a container within the receiver, a layer of surface water of desired thick ⁇ ness being arranged to flow into the top portion of said container from the receiver; rotor means provided in the bottom portion of the container for bringing the oil/water mixture contained in the container into a rotary motion for creating a conical turbulence in the liquid surface above the container.
  • the water/oil mixture contained in the receiver is brought into a local rotary motion which creates a conical turbulence in the surface of the mixture, so that the oil, being lighter than water and thus on the surface, is gather ⁇ ed at the centre of the turbulence into a thicker layer wherefrom it can be removed by pumping more ef- ficiently than if it were divided into an even layer throughout the receiver.
  • Known apparatuses are able to treat only a limited amount of oil/water mixture because when the amount of mixture flowing through the turbulence is increased, the oil sep- arating capacity is substantially deteriorated.
  • the object of the invention is to improve the efficiency of the oil collecting method and vessel of the type described above.
  • the basic idea of the method according to the invention is to prevent direct flow from the centre of the conical turbulence downwards towards the bottom of the receiver. In this way the oil at the centre of the turbulence is prevented from being drawn under the surface by the downward flow, which improves consider ⁇ ably "the efficiency of the oil collecting process as compared with previous solutions.
  • the invention is also concerned with an oil collecting vessel according to claim 4.
  • a control means concentric with the turbu ⁇ lence and the rotor means is disposed in the container above the rotor means. According to the invention the control means prevent the oil from flowing from the centre of the turbulence directly downwards.
  • Figure 1 is a sectional side view of an oil collecting vessel according to one embodiment of the invention.
  • FIG 2 is a partial sectional view of the oil collecting vessel of Figure 1 from the top.
  • Figures 1 and 2 show one specific oil collect ⁇ ing vessel according to the invention.
  • the vessel com ⁇ prises a body 1 with a receiver 10 open at the top.
  • Two buoyant oil booms 7 and 8 are positioned in front of the vessel at the forward corners of the receiver 10.
  • the booms project from the vessel obliquely for ⁇ wards, forming a V-shaped boom structure which tapers towards the receiver 10 so that it leads the oil- containing surface water into the receiver.
  • a drive motor 3 and 4 is attached to each one of the oil booms 7 and 8, respectively, at the end of the draw boom closest to the vessel.
  • the drive motor rotates all the screw-like draw booms of the oil boom at the same rate so that the draw booms 1, 5 and 6 displace surface water towards the receiver 10 of the vessel in the di- rection of the arrow 5 while they rotate.
  • a buoyant part 23 posi ⁇ tioned at the orifice of or below a suction pipe 11 positioned in the receiver 10 comprises an interface detector for detecting the interface between water and oil and for controlling a suction pump (not shown) .
  • the thickness of the oil layer should be greater around the buoyant part 23. This is achieved by bringing the water/oil mixture contained in the receiver into a lo ⁇ cal rotary motion which creates a downwardly tapering conical turbulence in the surface, whereby the oil which is lighter and thus floats on the surface, tends to move towards the buoyant part 23 positioned at the centre of the turbulence and an oil suction opening provided therein.
  • the interface detector switches off the pump if the oil layer on the surface is too thin or if there is no such layer at all, which prevents the pumping of water into the recovery tank 2.
  • a container 12 is positioned within the re- ceiver 10. As viewed from the side, the container has the shape of an upwardly tapering cone while it is round as viewed from the top. In the example of Figure 1, the bottom of the container protrudes below the bottom of the receiver 10.
  • the conical container 12 is open at the top so that the upper edges of the side wall 12b of the conical container 12 remain below the surface of the liquid contained in the receiver.
  • the conical container 12 may extend above the surface of the liquid contained in the re- DCver 10, in which case its sides comprise flow open ⁇ ings which pass therethrough a surface layer of suit ⁇ able thickness into the conical container.
  • a discharge pipe 13 or the like is preferably provided at the bot ⁇ tom of the conical container for removing water from the conical container back to the receiver.
  • the recirculation of water into the receiver enables the water to be retreated if it still contains oil.
  • the discharge pipe preferably terminates close to the surface.
  • the bottom construction of the receiver 10 may be considerably more open than that shown in the figure in order to make it easier for the surplus water in the bottom portion of the receiver to flow out under the booms and the sides of the receiver 10.
  • the oil-containing surface water instead, is retained in the receiver 10.
  • a rotor 15 comprising several blades 16 extend ⁇ ing radially from the middle of the conical container towards its side walls is provided in the bottom por ⁇ tion of the conical container 12.
  • a control means preferably a control plate 9, is provided in the conical container 12 below the buoyant part 23.
  • the diameter of the control plate is smaller, preferably 20 % smaller than the diameter of the conical container 12 at the height where the control plate is located.
  • the control plate prevents flow from the centre of the turbulence directly to the bottom of the container 12, thus decreasing the amount of oil to be sucked into the container 12.
  • the control plate 9 need not rotate, so it can be supported e.g. to the sides 12b of the container 12 or to a vertical bar 22 which centres the buoyant part 2 in the middle of the turbulence.
  • the control plate 9 is preferably round while its diameter and the height at which it is positioned in the container 12 are determined accord ⁇ ing to requirements in each particular case.
  • the receiver 10 further comprises a partition wall or baffle plate 14 which extends obliquely from one side of the receiver 10 near to the turbulent point, so that it prevents the water/oil mixture entering the vessel and flowing towards the turbulence from making contact with the turbulence on that side of the turbulence where the flow caused by the turbu- lence is towards the front portion of the receiver 10, being opposite to the incoming flow. If these flows should strike against each other, oil and water would be mixed which is a drawback.
  • the partition wall 14 leads the incoming flow into the turbulence in such a manner that the flows are substantially parallel and no disadvantageous mixing occurs.
  • the conical container 12 may be formed wholly within the receiver 10 solely by means of the partition walls 12b.
  • the rotation and support of the rotor 15 can be arranged in various ways obvious to one skilled in the art.
  • the vessel may comprise a lifting ramp formed by an endless mat 17 moving around two rolls 21. Ice blocks 18 moving on the mat 17 are washed by means of water jets 20 applied downwards from nozzles 19 positioned above the mat 17. At the upper end of the lifting ramp, the cleaned ice blocks fall back into the water along the downwardly slanting upper walls of the recovery tank 2.
  • the lifting ramp prevents efficiently the entrance of ice blocks into the back portion of the receiver 10 and into the turbulence, where they would disturb the pumping process and might even damage the rotor 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Removal Of Floating Material (AREA)
  • Cleaning Or Clearing Of The Surface Of Open Water (AREA)

Abstract

La présente invention se rapporte à un bateau collecteur de pétrole et à un procédé d'extraction de pétrole de la surface d'un mélange eau/pétrole recueilli dans une cuve réceptrice (10) à l'intérieur d'un bateau collecteur de pétrole. Le bateau comporte, dans la cuve réceptrice (10), un récipient conique (12) à section décroissant vers le haut et ouvert à son sommet. Un rotor (15) est placé dans la partie inférieure du récipient (12) et sert à imprimer au mélange eau/pétrole un mouvement rotatif destiné à créer une turbulence conique dans la surface du liquide, de sorte que le pétrole tend à se déplacer en direction du centre de la turbulence, de façon à pouvoir être efficacement extrait par pompage. Un organe de régulation concentrique (9), disposé au-dessus du rotor (15), empêche l'écoulement du mélange et en particulier du pétrole du centre de la turbulence directement vers le bas.
PCT/FI1989/000661 1987-12-15 1989-04-03 Procede d'extraction de petrole de la surface d'un melange eau/petrole recueilli dans une cuve receptrice a l'interieur d'un bateau collecteur de petrole et bateau collecteur de petrole WO1990012156A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI875500A FI875500A (fi) 1987-12-15 1987-12-15 FOERFARANDE FOER AVLAEGSNANDE AV OLJA FRAON YTAN AV EN VATTEN/OLJEBLANDNING SOM UPPSAMLATS I UPPSAMLINGSBEHAOLLAREN I ETT OLJEUPPSAMLINGSFARTYG SAMT OLJEUPPSAMLINGSFARTYG. SIIRRETTY PAEIVAEMAEAERAE-FOERSKJUTET DATUM PL 14 ç 04.03.88.

Publications (1)

Publication Number Publication Date
WO1990012156A1 true WO1990012156A1 (fr) 1990-10-18

Family

ID=8525561

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1989/000661 WO1990012156A1 (fr) 1987-12-15 1989-04-03 Procede d'extraction de petrole de la surface d'un melange eau/petrole recueilli dans une cuve receptrice a l'interieur d'un bateau collecteur de petrole et bateau collecteur de petrole

Country Status (3)

Country Link
FI (1) FI875500A (fr)
FR (1) FR2645558A1 (fr)
WO (1) WO1990012156A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7785035B2 (en) 2005-07-15 2010-08-31 Oy-Kappelinranta-Kapelstrand Ab Apparatus, system and method for collecting material from water system and uses of apparatus
US8366943B2 (en) 2007-10-17 2013-02-05 Oilwhale Oy Apparatus and method for collecting material from water systems
EP4019700A1 (fr) * 2020-12-22 2022-06-29 Korea Institute of Ocean Science and Technology Dispositif de récupération d'huile à haute viscosité pour les marées noires et procédé associé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2803270B1 (fr) * 2000-01-04 2002-03-29 Droff Yves Le Appareil recuperateur de matieres polluantes, en particulier des hydrocarbures

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE375125B (fr) * 1968-12-23 1975-04-07 Bertin & Cie
SE401005B (sv) * 1972-06-10 1978-04-17 Bridgestone Tire Co Ltd Anordning for avlegsnande av flytande material fran en vattenyta
US4196087A (en) * 1978-05-12 1980-04-01 Gordon Ellison T Floating surface liquids retrieval system
FI78531B (fi) * 1987-12-07 1989-04-28 Kalervo Virtanen Oljeuppsamlingsfartyg.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1284363B (de) * 1965-02-16 1969-04-17 Rheinwerft Gmbh & Co Vorrichtung zur Beseitigung von auf Wasser schwimmenden fluessigen Stoffen, insbesondere von OEl
US3800951A (en) * 1968-12-23 1974-04-02 Bertin & Cie Apparatus for removing a substance floating as a layer on the surface of a body of liquid
US3635342A (en) * 1969-12-22 1972-01-18 Bertin & Cie Method and apparatus for recovering a substance floating as a sheet on the surface of a liquid mass
FR2123950A5 (en) * 1971-01-29 1972-09-15 Guigues Frederic Control system for vortex layer sepn of liquids - - partic of oil from water
FR2219672A5 (fr) * 1973-02-26 1974-09-20 Bertin & Cie
US4142972A (en) * 1975-03-27 1979-03-06 Scientific Associates, Inc. Mechanism and method for recovering material from the surface of a liquid body
JPS541064Y2 (fr) * 1975-09-18 1979-01-19

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE375125B (fr) * 1968-12-23 1975-04-07 Bertin & Cie
SE401005B (sv) * 1972-06-10 1978-04-17 Bridgestone Tire Co Ltd Anordning for avlegsnande av flytande material fran en vattenyta
US4196087A (en) * 1978-05-12 1980-04-01 Gordon Ellison T Floating surface liquids retrieval system
FI78531B (fi) * 1987-12-07 1989-04-28 Kalervo Virtanen Oljeuppsamlingsfartyg.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7785035B2 (en) 2005-07-15 2010-08-31 Oy-Kappelinranta-Kapelstrand Ab Apparatus, system and method for collecting material from water system and uses of apparatus
US8366943B2 (en) 2007-10-17 2013-02-05 Oilwhale Oy Apparatus and method for collecting material from water systems
EP4019700A1 (fr) * 2020-12-22 2022-06-29 Korea Institute of Ocean Science and Technology Dispositif de récupération d'huile à haute viscosité pour les marées noires et procédé associé

Also Published As

Publication number Publication date
FI875500A (fi) 1989-09-05
FR2645558A1 (fr) 1990-10-12
FI875500A0 (fi) 1987-12-15

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