WO1997039194A1 - System for picking up oil from the water - Google Patents
System for picking up oil from the water Download PDFInfo
- Publication number
- WO1997039194A1 WO1997039194A1 PCT/FI1997/000209 FI9700209W WO9739194A1 WO 1997039194 A1 WO1997039194 A1 WO 1997039194A1 FI 9700209 W FI9700209 W FI 9700209W WO 9739194 A1 WO9739194 A1 WO 9739194A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tunnel structure
- brush
- tunnel
- oil
- fitted
- Prior art date
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
-
- 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 object of the invention is a system for removing oil from the surface of water, comprising a rotating gripping element which is fitted to a casing through which oil-polluted water flows, and a means for recovering the substance gathered in the gripping members.
- Patent publications FI 70443 and PCT/FI90/00086 discribe drum-like, rotating systems that collect oil. These systems are intended to be installed in vessels so that the speed of travel of the vessel provides a water flow and enhances the oil collection of the system. The efficiency of the system is considerably reduced when running at low speeds.
- Application publication FI 914650 describes an oil collection arrangement used in connection with a vessel, comprising rotating brush wheels fitted to a casing. Water polluted by oil flows through the small holes in the front wall of the casing to the brush wheel compartment, laterally through the holes in the wheels, and through a hole in the partition wall of the casing to an adjacent receiver. Thus, the water does not flow very effectively through the brush wheels; therefore, the collection result is not very good.
- the purpose of the invention is to provide a system in which guiding oil-polluted water through the brush wheels and the adhesion of oil to the bristles would be as effective as possible.
- the system according to the invention is generally used in connection with an apparatus moving in water, more generally in connection with a vessel, but it can also be self-sufficient and move by its own power.
- a tunnel structure with an inner diameter of about the same size as the outer diameter of the gripping element where the gripping members of the element are longest.
- the gripping element is coaxial with the tunnel structure and preferably located partly inside the tunnel structure.
- the tunnel structure with its gripping elements can form a 0°-90° angle with the longitudinal axis of the vessel pulling the system.
- the angle is preferably 0° or close to it but it also works throughout the said 0°-90° range of the angle. Securing and supporting the system to the vessel is adapted to said angle.
- the gripping element according to the invention is preferably a brush drum comprising a drum, bristle rings being spaced on its periphery in the direction of the periphery.
- the bristle length of the bristle rings preferably grows from the front end towards the back of the brush drum with respect to the direction of movement of the vessel.
- the brush drum rotates by the driving power of its own motor.
- a comb member is arranged to press the oil out of the bristles and to transfer it to an oil container or, alternatively, to an elevator that turns around the tunnel structure and the pivoting support above it, the elevator again transferring the collected oil to the vessel.
- a more expensive pump solution is used with greater amounts of oil.
- a propeller can be made to rotate simultaneously with the brush drum.
- the propeller receives its driving power from its own motor.
- At least the rearward bristle ring of the brush drum has an outer diameter, i.e., as measured from the ends of the bristles, of the same measure as the inner diameter of the surrounding tunnel structure and it constitutes the last break for the water flowing through to capture any oil that still remains in the water.
- the outer diameter of the bristle rings preferably increases backwards, whereby a conical envelope surface is formed, smoothening and helping the guiding of the water flow to the tunnel structure.
- the front end of the brush drum preferably projects slightly from the tunnel structure, for example, so that three bristle rings are outside the tunnel and three inside, the last two rings extending to the inner surface of the tunnel.
- the whole brush drum can also be inside the tunnel structure.
- the number of the bristle rings can vary according to the conditions. The number of rings can be as small as three or four but preferably from five to seven.
- the brush drum is easy to replace.
- a conical element may be placed in front of the brush drum to enhance directing the water flow inside the tunnel.
- the tunnel structure with its brush drums, the propeller and both motors are attached to a beam arrangement from which they can be detached for replacement or maintenance.
- the jacket of the tunnel can be open, for example, where the comb member is situated.
- the system comprises a debris collecting grate rotating about 270°, throwing the problematic solids into the oil collecting container through the comb member.
- an additional propeller can be fitted in the water outlet of the casing.
- Fig. 1 shows the system according to the invention in its operating position, attached to the side of a vessel
- Fig. 2 is a top view of a preferred embodiment of the system
- Fig. 3 is a side view of another preferred embodiment of the system
- Fig. 4 is a back view of a further preferred embodiment
- Fig. 5 is a cross-section of the embodiment according to Fig. 4 as viewed from the back
- Fig. 6 shows the embodiment of Figs. 4 and 5 as viewed from the outer side
- Figs. 7a to 7d show another embodiment of the invention
- Fig. 10 shows schematically the alternative angle positions of the system with respect to the longitudinal axis of the pulling vessel. 7/00209
- Fig. 1 shows the system according to the invention as attached to the one side of the vessel in a position where the axis of the tunnel structure is parallel with the longitudinal axis of the vessel.
- the fixing of the system and that of the oil boom to the vessel is illustrated in the Figures.
- Fig. 2 is a top view of one system according to a preferred embodiment.
- the tunnel structure 3 is placed inside the outer casing 2.
- the brush drum 4 is placed inside the casing 2 and partly inside the tunnel 3, the bristle rings 5 being placed on its peripheral surface in the direction of the periphery.
- the direction of movement of the system as fitted to the vessel is in the direction of the arrow, i.e., to the right.
- the forward bristle ring of the brush drum comprises the shortest bristles, the next one comprises slightly longer bristles, and the third visible bristle ring comprises the longest bristles.
- the circumferential surfaces of the bristle rings thus constitute a conical envelope surface facilitating directing the water flow to tunnel 2 through the bristle rings.
- the bristles of the rearward bristle ring extend to the lining of tunnel structure 3. Part of the water polluted by the oil flows through all the bristle rings, part only flows through two and part only through one bristle ring. Practically speaking, no water is allowed to pass the bristle rings without going through them, so the oil adheres to the bristles.
- the comb member 6 presses the oil out of the bristles and transfers it to the oil container or directly to the elevator which carries the oil to the vessel.
- the hydraulic motor 7 rotates the brush drum. The motor 7 and the brush drum are replaceably attached to the casing 2 with the aid of beam framework 8.
- Fig. 3 shows another system according to a preferred embodiment as viewed from the front.
- This embodiment is the same as the former, with the exception of propeller 9 which is placed coaxially to the tunnel structure and the brush drum at the rear of the tunnel structure, the propeller enhancing the water flow through the tunnel structure.
- the propeller is an efficient accessory which essentially increases the water flow through the system in low velocities of the vessel in particular.
- Propeller 9 uses another hydraulic motor 7'.
- Fig. 4 shows another preferred embodiment as viewed from the back.
- the system comprises propeller 9 driven by motor 7'.
- the motor is attached to casing 2 by beam framework 8.
- Oil elevator 10 is arranged to circle the lower periphery of tunnel structure 3 and rotatable roll 11. Elevator 10 is fitted inside the casing structure 12.
- the elevator comprises transfer elements 13 made of bristles.
- Comb member 14 or similar is fitted in conjunction with the elevator next to the rotatable roll 1 1 to transfer the oil conveyed by the elevator to the oil container or similar of the vessel.
- Fig. 5 shows the cross-section of the system illustrated in Fig. 4 as viewed from the back. It shows comb member 6 and the bottom 15 of the oil container.
- Fig. 6 shows the system according to Figs. 4 and 5 as viewed from the outer side.
- the conveyor bottom 16 of elevator 10 is grate-like in order to filter from the oil the solids which are among the polluted oil.
- the elevator is fitted beside propeller 9, in front of it.
- the transfer members 13 of the elevator and casing structure 12 are installed to travel in the space between tunnel structure 3 and casing 2.
- brush drum 4 only the front part protruding from the tunnel structure is visible, comprising three bristle rings. There can be several bristle rings inside the tunnel structure 2. The figure does not show the driving motor T of the propeller.
- Figs. 7a-7d show one preferred embodiment with a rotating debris collecting grate 17 added to it, and a conical structure placed in front of the system.
- Figs. 7a and 7b show the system as viewed from the back, as a cross-section and not cut, and Figs. 7c and 7d show it from the front, correspondingly.
- the debris collecting grate 17 is arranged to turn 270 .
- the water outlet is marked with number 18.
- the conical structure is marked with number 19. Its location in the longitudinal direction of the vessel is illustrated in Fig. 8.
- Fig. 8 shows the embodiment according to Figs. 7a to 7d as viewed from the side.
- the water level is marked with the letters WL.
- the conical structure 19 is installed immediately in front of the system, so it effectively directs the water flow inside the tunnel structure through bristle rings 5.
- the bristle rings of the brush drum 4 all have the same outer diameter.
- the brush drum is inside tunnel structure 3 the width of two bristle rings 5, and in front of it the width of four bristle rings.
- Propeller 9 is fitted immediately behind the brush drum.
- Fig. 9 shows an advantageous embodiment of the system as viewed from the back. A small propeller has been added next to the water outlet to enhance the water flow through the system.
- Fig. 10 shows alternative angle positions of the system with respect to the pulling vessel.
- the new feature in the system according to the invention is that it comprises a tunnel structure coaxial with the brush drum 4 which at least partly surrounds the brush drum and comprises an inner diameter which is about the same as the greatest outer diameter of the bristle rings of the brush drum.
- This arrangement can be used to effectively direct the water flow to the tunnel structure and through it, so the water polluted by oil is brushed through the bristle rings and the polluted oil effectively adheres to the bristles. Guiding of water flow to the tunnel structure is enhanced by a propeller fitted at the end of the tunnel structure.
- the location of the brush drum with respect to the tunnel structure i.e., how far inside the tunnel it is installed, is determined on the basis of experience.
- the angle position of the system with respect to the longitudinal axis of the pulling vessel is selected in accordance with the conditions.
- the tunnel structure and the brush drum are installed parallel to the vessel but a fairly small angle does not essentially affect directing the water inside the tunnel.
- the system works according to the idea of the invention even with a larger angle up to about 90° .
- the system can also be self-supporting so that it moves under the effect of the propeller providing the water flow. This very advantageous solution can be used in small operational areas. Such a practical system can be quickly taken into use when small oil spills occur in waterways in industrial regions.
- the amount of bristles per unit of surface in the bristle rings, the mutual distance of the bristle rings, and the length of the bristles are selected according to the conditions and experience. It is also clear that the gripping members of the brush drum can be other gripping members rather than bristles, such as a tassel or tassels of a synthetic substance to which the oil easily adheres and from which it is easy to remove by the compression of the comb member.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU22955/97A AU2295597A (en) | 1996-02-21 | 1997-04-04 | System for picking up oil from the water |
EE9800350A EE04064B1 (en) | 1996-02-21 | 1997-04-04 | A device for collecting oil from the water surface |
EP97915500A EP0894168A1 (en) | 1996-02-21 | 1997-04-04 | System for picking up oil from the water |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI960779A FI960779A (en) | 1996-02-21 | 1996-02-21 | Oil spill response unit |
FI960779 | 1996-04-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997039194A1 true WO1997039194A1 (en) | 1997-10-23 |
Family
ID=8545505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1997/000209 WO1997039194A1 (en) | 1996-02-21 | 1997-04-04 | System for picking up oil from the water |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0894168A1 (en) |
AU (1) | AU2295597A (en) |
EE (1) | EE04064B1 (en) |
FI (1) | FI960779A (en) |
WO (1) | WO1997039194A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014001613A1 (en) * | 2012-06-25 | 2014-01-03 | M & L Patent Oy Ab | Oil collector |
WO2017055690A1 (en) * | 2015-09-30 | 2017-04-06 | M & L Patent Oy Ab | Oil collecting device |
WO2017212117A1 (en) * | 2016-06-08 | 2017-12-14 | Sajakorpi Oy | Brush for collecting oil from water using a collection device and a corresponding collection device |
WO2019170957A3 (en) * | 2018-03-07 | 2019-10-17 | M & L Patent Oy Ab | Oil spill response unit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH565905A5 (en) * | 1973-03-12 | 1975-08-29 | Seaclean Sa | Collecting oil slick from sea water - uses conduit dragged across water surface and trapping floating oil film |
FI70443B (en) * | 1982-11-10 | 1986-03-27 | Lundin Lars Patent | ANORDNING FOER UPPSAMLING AV OLJA ELLER DYLIKT FRAON VALTENYTA |
WO1990012157A1 (en) * | 1989-04-03 | 1990-10-18 | Oy Larsen Marin Ab | An oil collecting unit |
-
1996
- 1996-02-21 FI FI960779A patent/FI960779A/en unknown
-
1997
- 1997-04-04 EP EP97915500A patent/EP0894168A1/en not_active Withdrawn
- 1997-04-04 AU AU22955/97A patent/AU2295597A/en not_active Abandoned
- 1997-04-04 EE EE9800350A patent/EE04064B1/en not_active IP Right Cessation
- 1997-04-04 WO PCT/FI1997/000209 patent/WO1997039194A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH565905A5 (en) * | 1973-03-12 | 1975-08-29 | Seaclean Sa | Collecting oil slick from sea water - uses conduit dragged across water surface and trapping floating oil film |
FI70443B (en) * | 1982-11-10 | 1986-03-27 | Lundin Lars Patent | ANORDNING FOER UPPSAMLING AV OLJA ELLER DYLIKT FRAON VALTENYTA |
WO1990012157A1 (en) * | 1989-04-03 | 1990-10-18 | Oy Larsen Marin Ab | An oil collecting unit |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014001613A1 (en) * | 2012-06-25 | 2014-01-03 | M & L Patent Oy Ab | Oil collector |
CN104641045A (en) * | 2012-06-25 | 2015-05-20 | M&L专利股份有限公司 | Oil collector |
US9683344B2 (en) | 2012-06-25 | 2017-06-20 | M & L Patent Oy Ab | Oil collector |
WO2017055690A1 (en) * | 2015-09-30 | 2017-04-06 | M & L Patent Oy Ab | Oil collecting device |
US10633814B2 (en) | 2015-09-30 | 2020-04-28 | M & L Patent Oy Ab | Oil collecting device |
WO2017212117A1 (en) * | 2016-06-08 | 2017-12-14 | Sajakorpi Oy | Brush for collecting oil from water using a collection device and a corresponding collection device |
WO2019170957A3 (en) * | 2018-03-07 | 2019-10-17 | M & L Patent Oy Ab | Oil spill response unit |
US11473259B2 (en) | 2018-03-07 | 2022-10-18 | M & L Patent Oy Ab | Oil spill response unit |
Also Published As
Publication number | Publication date |
---|---|
FI960779A (en) | 1997-10-18 |
FI960779A0 (en) | 1996-02-21 |
AU2295597A (en) | 1997-11-07 |
EE9800350A (en) | 1999-04-15 |
EE04064B1 (en) | 2003-06-16 |
EP0894168A1 (en) | 1999-02-03 |
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