EP0712457A1 - Device for recovering pollutants spilled on water or on the ground - Google Patents
Device for recovering pollutants spilled on water or on the groundInfo
- Publication number
- EP0712457A1 EP0712457A1 EP95919480A EP95919480A EP0712457A1 EP 0712457 A1 EP0712457 A1 EP 0712457A1 EP 95919480 A EP95919480 A EP 95919480A EP 95919480 A EP95919480 A EP 95919480A EP 0712457 A1 EP0712457 A1 EP 0712457A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- float
- threshold
- compartment
- floating
- recovery
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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
- E02B15/046—Collection of oil using vessels, i.e. boats, barges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/32—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for collecting pollution from open water
-
- 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
- E02B15/048—Oil collectors moved over the water skimming the water surface
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/918—Miscellaneous specific techniques
- Y10S210/922—Oil spill cleanup, e.g. bacterial
- Y10S210/923—Oil spill cleanup, e.g. bacterial using mechanical means, e.g. skimmers, pump
Definitions
- the invention relates to a device for recovering pollutants spilled on water or on the ground, such as, for example, hydrocarbons at sea or on beaches.
- document EP-A-0005 411 describes a device the characteristic of which is to separate settling tanks carried by a boat, from a so-called “skimming" apparatus.
- Such a skimming device comprises a weir threshold compartment intended to receive the material to be recovered and a system for emptying said compartment, while the weir threshold forms or comprises at least one clean float submerged at least partially in the recovery compartment , said threshold being already known and called "floating threshold".
- the skimming device When the skimming device has significant dimensions, or if it forms one body with a support of the storage tank, of the type for example boat or barge, which is in particular compulsory if the device for emptying is of the noria type, such a device is very insensitive to agitation or ripples (such as swell or chop) of the water, which is a major drawback since there is no adaptation accordingly of the threshold -floating.
- Document FR-A-2 200859 also describes a device intended for its part to dampen the movement of waves.
- the inventor has designed an apparatus, one of the aims of which is to maintain the overflow threshold of the recovery compartment at a substantially constant level of immersion, whatever the movements of the body of water.
- the apparatus according to the invention of the aforementioned type with floating threshold, is remarkable in that said threshold is connected to at least one float carried by the water body external to said compartment, so as to be sensitive both to variations in levels in the compartment and to the relative movements of the outside water level.
- connection between the threshold and the external float is ensured by means which allow relative movement between said threshold and said external float.
- the recovery compartment is delimited by the threshold which is in the form of a transverse float, a bottom and lateral cheeks, said bottom and the threshold being interconnected by a deformable partition.
- a drainage system which comprises a continuous flexible inclined belt, mounted endlessly between at least two drums, at least one of which is motor, and carrying a plurality of flexible transverse lamellae which move in a adjusted manner in a tunnel formed by two vertical flat cheeks and an inclined bottom, which is extended at its lower part by cheeks and a bottom delimi ⁇ as with the threshold the recovery compartment.
- Known systems of this type due to the fact that the lamellae must enter the water perpendicular to the surface and that they generally have a "donkey back" boss at this location, require that said lamel ⁇ be mounted tangentially to the carpet, which results in repeated work and curvature of the slats which wear out quickly.
- the invention makes it possible to design a device provided with such an emptying system but which is remarkable in that the recovery compartment reserves between the threshold and the slats a space such that the outer edges of said slats cannot touch said threshold. , the slats making, at rest, with the plane of the carpet, an angle close to 90 degrees.
- a device according to the invention equipped with an emptying system of the aforementioned type, can allow this double function and for this purpose, an embodiment is remarkable in that its lower part is removable along the '' a separation line and replaceable by an interchangeable assembly which is open to its lower part to allow the flexible strips to protrude slightly, and which is provided with wheels allowing it to move on the ground, while flexible strips or scraping blades are provided so as to use the device for recovering materials spread or washed up on the ground.
- An original mode according to the invention is remarkable in that the floating support is provided with a device for automatically maintaining a substantially constant draft, comprising means sensitive to the external water level, mounted so as to act on a device for controlling a pump arranged to evacuate the contents of said storage tank to the outside in an amount necessary to maintain a constant relative position of the outside water level relative to the floating support.
- the means sensi ⁇ ble at the outside water level comprises at least one float which floats on this outside water body.
- a complete device it can be mounted on a support that is both floating and rolling of the amphibious type.
- FIG. 1a is a vertical section and FIG. 1b a plan view of the assembly of recovery equipment according to the invention in its "floating" configuration,
- FIG. 2a shows in vertical section and Figure 2b in perspective, the detail of the lower part of the noria type lifting system around its mouth, with its entry threshold with double buoyancy, in "floating" configuration
- FIGS. 3a, 3b, 3c, 3d show schematically that this same lower part in several cases of position of the floating threshold
- FIG. 4 represents another embodiment of the double buoyancy floating threshold
- FIG. 5 is a section through the hull of the floating support in the area of the draft control device
- FIG. 1 shows in vertical section and Figure 6b in perspective, the mouth in its configuration "lands-
- Figure 7a is a vertical section and Figure 7b a plan view of the entire equipment in its "amphibious" configuration.
- All of the pollution recovery equipment shown in FIGS. 1 a and 1 b comprises a floating support 1 of the boat type carrying a power unit 2, composed for example of a heat engine which drives a hydraulic power station. It also carries a sealed reservoir 3 on its vertical walls and on the bottom but open on top, which contains the recovered pollutant 9, floating on water. Finally, this floating support also carries a lifting device 4 for fluids, of the noria type, with flexible lamellae, intended to serve as an emptying system, and which has a mouth 5 at the lower part, located in the vicinity of the floating surface 6 , and in the upper part a pouring spout 7 which opens onto the top of the reservoir.
- a sealed well 8 passes through the hull in the vicinity of the elevator, and contains a float 10 acting on a device 11, of the type hydraulic distributor for example, which controls the movement of the hydraulic motor of a pump 12, placed in the bottom of the tank 3.
- This pump is provided with a flexible delivery pipe 13, the discharge end of which can be directed to any point outside of the hull and in particular in the area of the water body located immediately upstream of the mouth 5.
- the flexible lamella lift is equipped in front of the mouth 5 with a set of two articulated arms 14, preferably floating, arranged flush with the water in the shape of a "V".
- This elevator is moreover articulated with respect to the floating support thanks to an axis 15 around which a hydraulic cylinder 16 allows it to move in rotation and to take various positions.
- This hydraulic cylinder is provided with a device making it possible, once it has been brought to a given position, to give it if necessary a degree of freedom allowing its upper end, therefore the entire elevator, to oscillate freely around this position.
- This can be obtained in a known manner by releasing one of the end axes of the jack which can then slide in an ovalized space, or even by using a hydraulic distributor capable of putting the two compartments of the jack in free communication located on each side of its piston.
- the lift 4 of the noria type with flexible lamellae is shown in FIGS. 2a and 2b. Its upper part of known type, with its spout 7 and its drive motor 32, is mentioned here for the record.
- Its lower part or mouth has an assembly consisting of two vertical cheeks 17 and a horizontal bottom 18, which carries on the upstream side, that is to say on the left in the drawing, a movable and deformable partition 19 produced here under shape of an articulated bellows, with tight hinges, for example made of flexible plastic.
- This partition is linked to a floating body, or float 20, of substantially cylindrical or parallelepiped shape with horizontal generatrices, which can move vertically between the two cheeks 17, jointly with the deformation of the bellows 19.
- weir threshold can be a member different from the float itself on the condition of being rigidly linked to it in all of its vertical movements.
- the combination of these two bodies in one represented here, is only a simplification of realization and one can speak in this case of "threshold-float" tor.
- the float threshold 20 and the partition 19 are adjusted with gentle friction inside the cheeks 17 which are of planar shape, so as to achieve a quasi-sealing and at the very least a possibility of fluid leaks.
- These cheeks 17, the bottom 18 and the bellows partition 19 delimit a compartment 22.
- two floats 23 resting on the body of water, outside the device, and free to move vertically while being guided between two slides 24.
- floats 23, whose total volume is significantly greater than that of float 20, are connected to that -this by two bars 25 each provided with a transverse axis which spans the cheeks 17 from above, and are guided by the slides 24.
- the connection by the bars 25 between the float 20 and the floats 23 is carried out in such a way and with a clearance such that the float 20 has the possibility of oscillating vertically over a small amplitude, independently of the movements of the floats 23, while being slaved to the movements of these floats beyond this low am fullness, as will be explained later.
- the elevator 4 of the noria type uses a flexible rotating carpet 26 which moves in the direction of the arrow 27. In its rising, therefore lower, part 26 this carpet is adjusted on its lateral sides with gentle friction between two cheeks 29 which extend the cheeks 17 over the entire length of the elevator to the pouring spout 7.
- the assembly formed by the bottom 21 and the cheeks 29 tightly connected constitutes a tunnel or chute which has inside a section in the shape of a "U" with sharp angles, constant along the length of the elevator. The lower part of this trough is curved until it is sealed with the bottom 18.
- the space between the cheeks 29 may be different from that which exists between the cheeks 17.
- the whole of the mouth including the compartment 22 with its different organs as well as the lower part of the chute 21, 29 is preferably made so as to be removable in one piece, with, for example, a separation line or cut 50 with edges adjusted in leaktight fashion, the fixing of this mouth being made at this cut, by example with quick couplers of the “latches” type 51.
- the mat 26 is stretched between two rotating cylindrical drums, a lower drum 30 and an upper drum 31, one of which, for example the upper, carries a drive motor 32, for example hydraulic.
- This carpet 26, in its rising part, that is to say its lower strand, is guided on the inner face by pressing on a slide 35. It further carries a series of pallets or rectangular lamel ⁇ 33 of flexible material , fixed on the outer face of the mat 26, in a sealed manner, for example by means of rigid angles 34 held by screws, and adjusted on their extreme edges with gentle friction with respect to the cheeks 17 and 29 which are in the same plan.
- the dimensions of the compartment 22 are such that the float 20 and the passage of the outer edges of the strips 33, there is reserved a space such that the strips cannot touch or even touch the threshold float 20.
- compartment 22 The operation is as follows: the fluids present in compartment 22 are trapped between each of the lamellae which pass there and the walls 17 and 18 of compartment 22 first, then the walls of the chute 21, 29, and transported to the spout pourer 7 from which they fall into the reservoir 3. Note that the counter-currents which may exist under the lamellae before their edge touches the bottom 18 have no reflux effect here on the products recovered since they do not 'only affect the interior of compartment 22.
- the gentle friction produced between three of the faces of each of the lamellae and the rigid walls which guide them, maintains a seal in each of the intervals between lamellae, such that these intervals include as many close elevating buckets, constituting a noria, and creating a continuous withdrawal of fluid in the compartment 22.
- the flexible strips being at their base substantially perpendicular to the support mat 26, they are only caused to bend slightly in the chute 21, 29, at an angle of the order of 45 °, causing only one deformation and therefore very limited fatigue of the material which constitutes them.
- FIGS. 3a to 3d make it possible to understand the operation of the recuperator according to the invention for its part located in the vicinity of the mouth.
- these schematic representations 3a to 3d adopt the following simplifications:
- FIGS. 1a, 1b and 2a, 2b we find the following elements described in FIGS. 1a, 1b and 2a, 2b: the external buoyancy surface 6, the compartment 22, the float threshold 20, the bulkhead bellows 19, the cheek 17, the bar 25, the float 23, the vertical guide glissiè ⁇ res 24.
- the connection between the float 20 and the float 23 is shown there in more detail, although schematically.
- This connection comprises an axis 36 fixed at the end of the bar 25 and free to move vertically in an open light in a vertical extension 37 of the float 23, between the limits of a high stop 38 and a low stop 39. This maximum vertical displacement is characterized by a stroke 40.
- the floating pollutant layer 41 has been shown.
- FIG. 1a, 1b and 2a, 2b we find the following elements described in FIGS. 1a, 1b and 2a, 2b: the external buoyancy surface 6, the compartment 22, the float threshold 20, the bulkhead bellows 19, the cheek 17, the bar 25, the float 23, the
- compartment 22 represents the mouth in its normal position of immersion on a body of calm water and before putting in in movement of the noria or any other pumping system in compartment 22.
- This compartment 22 is therefore normally filled to the maximum, that is to say at the level of the external water body, by the play of inevitable slight leaks at the ends of the float 20 and the bellows 19.
- the upper level of the float threshold 20 is such that the floating pollutant cannot pass over it.
- the adjustment by construction of the relative position of the floats 20 and 23 is carried out in such a way that under these conditions the axis 36 touches the bottom stop 39.
- the operation is as follows. As soon as the pump is pumped into compartment 22, the level of the liquid that it contains drops, causing float 20 to descend when it descends, which slightly deforms the bellows 19 and releases at its upper part a space through which the layer of pollutant floating 41 flows towards compartment 22 as it appears in FIG. 3b representative of what happens at the start of this phase, that is to say that there is still a little water at the bottom of compartment 22.
- the drop in level in compartment 22, and therefore the thickness of layer 41 which can pass over threshold 20, are all the more important as the pumping regime is itself important.
- the float 23 will follow this level and raise, by pressing up the axis 36 on the upper stop 38, the extension 37 and therefore the float threshold 20, which instantly takes the position shown in Figure 3c. Under these conditions, the passage of the corrugation does not cause any increase in the possible passage height above the threshold 20. There is therefore no overflow from the outside towards the compartment 22, which would have happened if 'It was necessary to wait for the rise of the float threshold 20 under the effect of filling the compartment 22, the time necessary for this filling allowing a large unnecessary entry of water.
- the float 23 descends, d 'first freely until a play equal to the stroke 40 is taken up, then drives the float threshold 20 downward, which sinks further into the compartment 22, its low buoyancy not being able to oppose at the downward force of the float 23, traversed by pressing the pin 36 on the bottom stop 39.
- the upper level of the float threshold 20 is therefore forced to follow down the movement of the float 23, c 'that is to say that of the water level 6. This avoids the break in passage above the threshold which would have occurred if the float threshold had only been linked to the level of fluid in compartment 22.
- the invention therefore has the particular effect of keeping the height of passage of the fluid substantially constant above the threshold and of making it adapt automatically to variations in pumping rate, by variation of speed of the noria by example, this constancy and this adaptation not being affected by the relative vertical movements of the body of water with respect to this noria.
- This provision applies moreover to all pumping systems other than a noria and in general, to all emptying systems.
- Figure 4 is a longitudinal section of the mouth of the noria in an embodiment of the double-float threshold-float, where the movements in vertical translation of this threshold-float 20, as shown in the figures 3, are replaced by rotational movements, also substantially vertical.
- the role of the deformable wall of the bellows 19 is played by a flap 64 adjusted with gentle friction at its ends inside the cheeks 17, linked to the bottom 18 by means of a flexible flexible blade 65, and which can move by rotation around two axes 66 to which it is linked by two arms 67.
- the flap 64 is fixed over the entire length and in a sealed manner to the float threshold 20 whose movements therefore follow the same rotation symbolized by the arrow 68.
- the axis of rotation 66 being in the vicinity of the horizontal of the top of the float threshold 20 in the middle position, this top moves substantially vertically.
- connection between the float threshold 20 and the floats 23 is here ensured by means of the axis 66 which crosses the cheek 17 and on which are embedded, on the one hand, inside, the arm 67, and on the other apart, on the outside, an arm 69, so that the rotation of one of these two arms necessarily tends to cause the rotation of the other.
- This arm 69 has at its end a light in which a pin 36 can be moved which is integral with the float 23, between two bu ⁇ tees, one high 38, the other low 39.
- Figure 5 is a section of the floating support 1 in its front part, enlarged with respect to the representation of Figure la, so as to show the details.
- the elevator 4 of the noria type, represented here for the record by a simple silhouette, with its pouring spout 7, the pollutant storage tank 3, the waterproof well 8 in communication with the ambient water by its lower opening.
- float 10 hydraulic distributor 11, pump 12, the flexible delivery pipe 13, the articulated floating arms 14, the axis of rotation 15 and the hydraulic cylinder 16.
- the invention is remarkable on this point in that the hydraulic distributor 11 is linked, for example, by a rigid rod 42 to the movements of the float 10, so that the rise of this float controls the hydraulic supply of the motor 43 of the pump 12 by the flexible piping 44 and starts this pump, and reciprocally, the descent of the float 10 controls the stop.
- the tank 3 being a decantation capacity, it is necessary to fill it with water from the start of a recovery operation. This operation can be easily carried out using the pump 12 for example.
- Such a pump is normal complementary equipment to the main equipment, as a means of emptying and transferring the contents of the reservoir 3.
- This pump has flexible pipes and can therefore be moved.
- it is easy, by hand or using a loading mast, to dip it in the water surrounding the floating support while the free end of its flexible delivery pipe 13 is then placed at the -above the tank 3.
- the pump 12 is started by manually raising the control lever 46 of the hydraulic distributor 11. We thus fill the tank with water and we only stop at a level higher than that which will be kept during the operation.
- the filling causes the floating support to sink, that is to say an increase in its draft.
- the pump 12 is then put back on the bottom of the tank and the free end of its flexible pipe 13 outwards, in the positions shown in FIG.
- This characteristic of the invention therefore has the effect of maintaining at a selected and constant average immersion the inlet threshold of the recuperator whatever the load variations of the floating support, independently of the origin of these load variations .
- a power unit 2 composed of a heat engine and a hydraulic power station, which can result in this case also the engine of the propeller propeller represented at 49 in FIG. 1.
- the energy transmission means may be different, for example compressed air or electricity.
- the motors of the elevator, the pump and the propeller are of the same type, that is to say respectively pneumatic and electric.
- the hydraulic distributor 11 then becomes, depending on the case, either a pneumatic distributor or an electrical contactor.
- the float 10 may not be necessary and may be replaced by a known type of relay contactor operating in contact with water by passage of the current in this water and interruption as soon as the relative level drops.
- the free end of the flexible pipe 13 is arranged in FIG. 1 and in FIG. 5 upstream from the mouth 5. This position is not compulsory and simply corresponds to the possibility of guarding against an inadvertent discharge of pollutant (at the end of filling of the reservoir 3 when the pollutant reaches the bottom) towards an area of the water body where its presence is not desirable.
- Figures 6 show in longitudinal section (Figure 6a) and in perspective view ( Figure 6b), the mouth of the noria suitable for the recovery of pollution polluted, or in the process of being grounded, on beaches, or even simply liquid or semi-liquid pollution spread on the ground, on roads for example.
- This figure shows a different embodiment of the lower part of the noria, which is otherwise identical to the previous one. Special complete equipment can be made, but it may be preferable for this lower part to be an interchangeable accessory mounted on the same basic equipment. It is therefore possible to dismantle, as described above, the assembly or mouthpiece comprising the compartment 22 with its different members and the lower part of the chute 21, 29, and replace it with the interchangeable mouthpiece of FIG. 6.
- This mouthpiece also tightly adjusted to the chute 21, 29 at the cutout 50 and fixed to this chute by quick couplers 51, comprises two cheeks 52, a bottom 53, and two wheels 54.
- the cheeks 52 are finished at their lower part by blades 60 made of a sheet of flexible material, which extends to the rear of the entry edge 55 of the bottom 53. Along this edge, is fixed tangentially a flexible transverse strip 56 length equal to the width of the bottom 53.
- the fulcrum of the wheels 54 on the ground is preferably close to the vertical of the axis of rotation of the drum 30, the diameter of these wheels being such that the strips 33 which touch the ground in the vicinity of this fulcrum naturally take a curvature similar to that which they have in the trough 21, 29.
- a transverse bar 58 for example, makes it possible to give this interchangeable mouthpiece sufficient rigidity.
- the cheeks 52 can be extended forwards, that is to say to the left of FIG. 6, by two symmetrical "V" arms 59, whether or not removable, provided at their base with flexible blades 61 similar to blades 60.
- the invention is remarkable on this point by the fact that the recovery elevator on the water is capable of easily receiving a mouth open at the bottom and comprising scraping elements with flexible blades.
- the assembly goes to meet the pollutants which are "swallowed” and pushed by the strips 33 towards the bottom 53 and the chute 21, 29 along which they go up to the pouring spout 7.
- the flexible strips 56 prevent these products from escaping from the rear and the blades 60 from escaping from the sides. These products, often viscous hydrocarbons, are therefore scraped off the ground and recovered continuously.
- the freedom of vertical oscillation and the support on the elevator wheels in the vicinity of the scraping zone means that the strips 33 follow exactly any unevenness in the ground, for example wet sand at low tide. Use in addition to the arms 17
- FIG. 7a represents in longitudinal section and FIG. 7b in top view, a floating support 1 of the type of that of FIG.
- this floating support 1 with its various components, and in particular the elevator 4, of the noria type, which can receive either l '' mouth for floating recovery, or the mouth for scraping the ground, as described above.
- this floating support 1 has been made capable of moving on the ground.
- the wheels can be, for example, provided with individual hydraulic motors 70 and 71.
- the steering operation of the front axle can also be ensured in this case by a jack. hydraulic 72.
- the wheels thanks to hydraulic cylinders 73 and 74, can be eclipsed in the hull in order to improve the hydrodynamics when it floats. These same jacks 72 and 73 allow the wheelsets to come out in order to move on the ground.
- the invention is remarkable on this point by the implementation of the recovery means described above, from a single amphibious support capable of moving indifferently on the water and on the ground.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9405590A FR2719610B1 (en) | 1994-05-06 | 1994-05-06 | Device for recovering polluting products spilled on water or on the ground. |
FR9405590 | 1994-05-06 | ||
PCT/FR1995/000585 WO1995030798A1 (en) | 1994-05-06 | 1995-05-05 | Device for recovering pollutants spilled on water or on the ground |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0712457A1 true EP0712457A1 (en) | 1996-05-22 |
EP0712457B1 EP0712457B1 (en) | 2001-08-01 |
Family
ID=9462961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95919480A Expired - Lifetime EP0712457B1 (en) | 1994-05-06 | 1995-05-05 | Device for recovering pollutants spilled on water or on the ground |
Country Status (5)
Country | Link |
---|---|
US (1) | US5647975A (en) |
EP (1) | EP0712457B1 (en) |
DE (1) | DE69521970D1 (en) |
FR (1) | FR2719610B1 (en) |
WO (1) | WO1995030798A1 (en) |
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WO1999057378A1 (en) | 1998-05-06 | 1999-11-11 | Mantis Oil Separation Limited | Weir skimmer and flotation system |
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FR2803270B1 (en) * | 2000-01-04 | 2002-03-29 | Droff Yves Le | DEVICE FOR RECOVERING POLLUTING MATERIALS, PARTICULARLY HYDROCARBONS |
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US20120043284A1 (en) * | 2010-08-17 | 2012-02-23 | Paulk James H | Oil skimmer |
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FR2424184A1 (en) * | 1978-04-24 | 1979-11-23 | Diaz Martin | FLOATING DECANTATION BASIN |
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FR2430350B1 (en) * | 1978-07-04 | 1981-10-23 | Ouest Ets Generaux Meca | |
WO1985005644A1 (en) * | 1984-05-25 | 1985-12-19 | Gordon Douglas Haig Withnall | Amphibious oil spill absorbing machine |
US4758355A (en) * | 1987-01-02 | 1988-07-19 | Atlantic Richfield Company | Oil spill recovery method |
US4842735A (en) * | 1988-03-21 | 1989-06-27 | Hollis Calvin L | Oil skimming apparatus |
IT1234582B (en) * | 1988-03-22 | 1992-05-25 | Mirella De Toffoli | PROCEDURE FOR CLEANING WATER FROM OILY FLOATING WASTE AND ITS APPARATUS, OF MODEST WEIGHT, WORKING WITHOUT PERSONNEL ON BOARD AND WITH CLEANING EFFICIENCY AND HIGH COLLECTION EVEN WITH SEA SEA |
US5043065A (en) * | 1990-07-30 | 1991-08-27 | Propp Carl F | Variable draft oil/debris skimming vessel |
US5215654A (en) * | 1992-03-06 | 1993-06-01 | C. R. Lewis Co., Inc. | Oil slick skimmer |
-
1994
- 1994-05-06 FR FR9405590A patent/FR2719610B1/en not_active Expired - Fee Related
-
1995
- 1995-05-05 WO PCT/FR1995/000585 patent/WO1995030798A1/en active IP Right Grant
- 1995-05-05 US US08/578,659 patent/US5647975A/en not_active Expired - Fee Related
- 1995-05-05 DE DE69521970T patent/DE69521970D1/en not_active Expired - Lifetime
- 1995-05-05 EP EP95919480A patent/EP0712457B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9530798A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999057378A1 (en) | 1998-05-06 | 1999-11-11 | Mantis Oil Separation Limited | Weir skimmer and flotation system |
Also Published As
Publication number | Publication date |
---|---|
FR2719610A1 (en) | 1995-11-10 |
EP0712457B1 (en) | 2001-08-01 |
WO1995030798A1 (en) | 1995-11-16 |
US5647975A (en) | 1997-07-15 |
DE69521970D1 (en) | 2001-09-06 |
FR2719610B1 (en) | 1996-07-26 |
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