CA1076038A - Skimmer surrounded by perforated baffles - Google Patents
Skimmer surrounded by perforated bafflesInfo
- Publication number
- CA1076038A CA1076038A CA253,841A CA253841A CA1076038A CA 1076038 A CA1076038 A CA 1076038A CA 253841 A CA253841 A CA 253841A CA 1076038 A CA1076038 A CA 1076038A
- Authority
- CA
- Canada
- Prior art keywords
- oil
- water
- suction
- pump
- floating
- 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.)
- Expired
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
- E02B15/106—Overflow skimmers with suction heads; suction heads
-
- 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
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
ABSTRACT OF THE DISCLOSURE
A novel floating oil recovery device is provided. It includes a main platform, and a plurality of radiating float members projecting there-from. A plurality of concentric perforated open cylindrical baffles depend-ing therefrom, thereby providing a plurality of annular passages and a cen-tral cylindrical core. A suction is disposed within the cylindrical core, the pump being flexibly suspended therewithin to float with its intake sub-stantially at the oil-water interface. This suction pump provides a floating device for the recovery of oil from oil spills where the quantity of oil is large and/or there is too much wave action.
A novel floating oil recovery device is provided. It includes a main platform, and a plurality of radiating float members projecting there-from. A plurality of concentric perforated open cylindrical baffles depend-ing therefrom, thereby providing a plurality of annular passages and a cen-tral cylindrical core. A suction is disposed within the cylindrical core, the pump being flexibly suspended therewithin to float with its intake sub-stantially at the oil-water interface. This suction pump provides a floating device for the recovery of oil from oil spills where the quantity of oil is large and/or there is too much wave action.
Description
1()76038 This invent~on rela~es to method and apparatus for removing a layer of combustible liquid from the surface of a body of water and more particularly to a method and apparatus for continuously burnlng a preselected portion of a layer of combustible liqulds on the surface of a body of water.
In the past, attempts have been made to conflne and collect the layer of combustible liquid formed by oil spills and the like. It has been suggested to provide booms to encircle the spill and then to collect the layer of oil on the water's surface by means of absorbent material or skimming devices. Some of the suggested boom structures have difficulty in encircling the entire layer of combustible liquid and frequently, portion of the layer pass over and under the booms.
Skimmer vessels, as described in United States Patent No.
3,219,190 issued NOvember 23, 1965 to Thune, are suggested to remove the oil from the surface of the water by a mechanical means and to collect the oil in collector vessels. It has been found, however, that the layer of oil is relatively thin as compared with the body of water on which it is floating and an inordinate amount of water must be removed with the oil. The water removed is contaminated with the oil and must also be ZO collected in the collector vessel and disposed of with the oil to prevent further contamination.
United States Patents Nos. 3,661,495, 3,661,496 and 3,661,497, all issued May 9, 1972 to Johnson, are directed to processes for posi-tioning a monolayer of cellular ceramic nodules on the surface of a layer of combustible liquid and completely burning the layer of combus-tible liquid therebeneath. These processes provided a method for successfully burning substantially all of the layer of combustible liquid beneath the nodules. The processes described in the above-mentioned patents do not, however, confine the burning to selected areas and the body of water with the layer of combustible liquid thereon is sub~ect to the prevailing wind and wave action.
Canadian Patent No. 972,692 issued August 12, 1975 to R.B.
- 1 - '3~
l~eagler~ provides an improvement to the above-mentioned United States patents, by providing a generally U-shaped, buoyant, self-propelled vessel which floats partially submesged in a body of water and has a longitudinal channel portion with a front opening. The vessel has an open bottom portion beneath the longitudinal channel portion. As the vessel advances into a body of water, a band of water with the layer of combustible liquid floating thereon, enters the channel portion of the vessel. The rate at which the combustible liquid, as a layer, enters the channel portion of the vessel is dependent on the forward speed of the vessel and the speed is controlled so that substantially all of the layer of combustible liqudd is removed by burning before the band of water passes under the rear portion of the vessel. As the vessel advances, the band of water with the layer of combustible liquid moves through a mixing chamber within the channel portion where a monolayer of cellular ceramic nodules are positioned on the top surface of the layer of combustible liquid. The layer of combustible liquid with the nodules floating thereon, moves rearwardly with the for~ard advance of the vessel into a combustion cham~oer where the layer of combustible liquid is ignited and burned. The nodules within the combustion chamber are recycled to the mixing chamber where they are again positioned as a -.
monolayer on the upper surface o~ the layer of combustible liquid.
Combustion air is provided for the combustion chamber and the combustion gases may be subjected to a secondary burning in the stack to remove the combustible materials in the combustion gases and provide a substan-tially smoke-free waste gas. Apparatus is provided to seal the combus-tion chamber and mixing chamoer if the burning of the combustible liquid tends to spread beyond the receiver.
Skimming devices are also known for skimming a floating con-taminant from the surface of the liquid upon which it is floating and is particularly applicable in the area of controlling oil refinery pollution.
~hile skimming apparatuses in general are known to the art, many problems are experienced wlth their use. These problems include the fact that quite often large quantities of water are collected along with the oil to be gkimmed, thus greatly reducing the effectiveness of the separation. Weather conditions also often adversely affect the degree of separation afforded by those devlces now known in the art.
For example, cold weather causes the heavier fraction of the floating oil to congeal in large masses whlch are dlfficult to collect from separator pickup surfaces. Furthermore, this semisolid oil often causes clogging problems in collection troughs and associated piping. Converse-ly in warm weather the oil spreads out in a thin surface coating thewater and making effective separation difficult. In both cases, exces-sive amounts of unwatted water are collected.
Canadian Patent No. 825,483 issued October 21, 1969 to L.W.
Lefke et al attempted to provide means to maximize oil recovery while minimizing water pickup, and to eliminate detrimental temperature effects on oil viscosity by providing means for varying and controlling the temprature of the separator pickup surfaces. This was alleged to be provided by means for guiding a stream of liquid which has a top immis-cible layer, a bottom immiscible layer and an interface therebetween. A
drum is provided having a serrated hydrophobic pickup surface and means are provided for rotatably mounting the drum so that its axis of rotation is so located above the stream that the roots of the serrations of the hydrophobic surface lie on the interface when the serrations, as viewed in cross-section, are at their limit of downward travel. Means are pro-vided for removing liquid from the hydrophobic surface of the drum, the removing means including a squeegee blade making continuous contact with the surface of the hydrophobic pickup surface. Means are provided for varying the rate of rotation of the drum, and means are optionally provided for controlling the temperature of the hydrophobic pickup surface.
There are situations, however, which do not favour the use of the above-described conyentional skimming or burn-off devices for either or both of the following reasons, namely: Ca) the quantity of oil is too large as is possible in the case of an offshore well blow-out;
(b) there is too much wave action.
Accordingly, it is an ob~ect of a broad aspect of this inven-tion to provide an improved floating device for the recovery of oil from oil spills.
By a broad aspect of this invention, a floating oil recovery device is provided comprising: a main platform; a plurality of radiating float members projecting therefrom, a plurality of concentric perforated open cylindrical baffles depending therefrom, providing a plurality of annular passages and a central cylindrical core; a suction pump disposed within the cylindrical core, the pump being flexibly suspended therewithin to float with its intake substantially at the oil-water interface.
By one variant of this invention, the cylindrical baffles are provided with circular flanges projecting into the annular passages.
~ - By a variation-of this variant,a plurality of vertically spaced-apart flanges are provided.
By another variant of this invention,:the radiating float members comprise a plurality of outrigger floats, each supported by an arm having an elbow capable of articulated adjustment.
By yet another variant of this invention, the suction pump includes a discharge tube, and the discharge tube is connected to the pump by flexible means.
B - 4 _ .
`` 1076038 By a variation of this variant, the discharge tube is freely vertically movable with relation to the main platform.
By another aspect of this invention, a method is provided for skimming and suctioning spilled oil from a body of water, the method including the steps of: '(1) passing waves containing the oil spill through a plurality of consecutive perforated baffles, thereby progres-sively reducing the height of the ~ave; (2) providing a central collec-ting core of relatively calm water; ~3) positioning a free floating .. , . -- . . . _ . _ . . ...................... . . . .. .. . .suctlon device therein, the device having an intake at the oil-water inter-face; and (4) operating the free floating suction device to suction off spilled oil in the central collecting core and (S) providing discharge means connected to the free floating suction device to remove the oil collected by the suction device.
Thus, the device according to an aspect of this invention comprises two parts. The first part is a series of concentric wave baffles making up a unit which is supported by outrigger floats to provide a wide "stance" and stability. This unit provides an area of chop-free water in the centre where the second part operates.
The second part is a free floating skimming device which drains off the top few inches of oil and/or water which is then pumped out to be collected or burned in an oil-well testburner which can typically accept up to 50%
water. The skimming nozzle is free to follow changes in wave height by being unrestricted in vertical movement independent of the wavebreaker which sup-ports it. It can also f~llow the changes in waveslope by being free to tilt in any direction through the use of a flexible connection. This ensures that the skimmer's intake remains parallel and just below the water level at all times. By ad~usting the buoyancy the intake can be kept so that the oil film can be collected with relatively little water.
3B s - , :. , :.
~ ' ;. ' :
10~6038 The primary pump can be incorporated into the skimming device and driven by hydraulics or any other pumping system can be mounted on the floating wave baffle unit, directly above the ski~mer.
In the accompanying drawings, Figure 1 is a partial cutaway view of the device of one aspect of this invention; and Figure 2 is a section through line II-II of Figure 1.
The floating oil recovery-device, shown generally as 100, is basically intended to provide a platform for supporting the equipment necessary to skim and remove spilled oil from a water body. In order to operate efficiently under adverse weather conditions such as choppy waters, certain features form part of the construction of the device, thus providing an adYantage in the operation of the device.' In order to maintain the'devlce in a stable floating position, outrigger floats 110 rest belo~ supporting arms 111 which radiate from the platform 112 of the device.' Supporting arms 111 have an elbow 113 which allows the floats 110 to be rigidly supported from the platform while the bulk and weight of the'supporting arms 111 is minimized. By providing a pivotal adjustment to the supporting arms 111, the floats 110 can be lowered or raised to obtain the desired platform height in rela-tion to particular wave conditions. The elbows 113 also serve the pu -pose of providing adjustment to the position of the float through arti-culating adjustments. In a preferred embodiment, the floating device has four outrigger floats; however, as long as symmetry is maintained, more outrigger floats may be provided.' -::. - . .
. . . : . : .
.' ~" ~ .
1076~38 Referring now to the main body of the floating oil recovery device 100, the platform 101 has a plurality of concentric depending open cylindrical baffles 114, 116, 118, 120 provided with a plurality of perforations 117.
The baffles are partially submerged below the water surface 115. The spaced-apart perforations 117 are of suitable size to allow the passage of the oil infested water into the concentric annular passages 122, 124, 126 between baffles 114, 116, 118 and 120, respectively. Baffle 114 is provided, along - its inner wall, with a plurality of vertically spaced-apart downwardly depend-ing flanges 128, to assist in calming the agitated water as it passes through perforations 117. Similarly, baffles 116 and ~18 are provided with such flanges 128 both on their outer walls and their inner walls, and baffle 120 is provided with such flanges 128 on its outer wall.
Within the inner core 121 enclosed by the third baffle 120 is a relatively calm area where an oil recovery pump 121 is disposed. The pump is described in copending Canadian patent application Serial No. 253,7~2 filed June 1, 1976 is suitably suspended from the platform 101 by means of a flexi-ble connection 123. The outlet pipe 125 is connected to pump 127 by means of a flexible conduit 129 and elbow pipe 131. Pipe 125 is free to move ver-tically within roller bearing retainer 133. Thus, any wave - 6 a -. : , .
: , .
, - "
iO76038 or turbulent water which strikes the outside surface of baffle 114 continues through perforation 117 towards the pump 121 and ls progres-sively reduced in height with esch passage through the concentrlc baffles 116, 118, 120 and contact with the flanges 12~. When entrance is gained i~to the central collecting area 119, the motion of the water has been substantiall~ reduced, and the pump 121 is able efficlently to skim and suction off the oil resting on the surface of the relatively calm and confined water. The floating pump 121 is furthermore able to cope with any remaining minor water motion as a result of its flexible connection 123 and its "free'floating" pipe connection via retainer 133 to the platform 112. The'liquid which is suctioned off is removed by a conventional pump 127 positioned on the platform 112 driven by motor 135 '' and is disposed of via outflo~ pipe 137 in a burner (not shown).
The entire device 100 can be either towed by a vessel or can be set up to provide its own motive means.
In the past, attempts have been made to conflne and collect the layer of combustible liquid formed by oil spills and the like. It has been suggested to provide booms to encircle the spill and then to collect the layer of oil on the water's surface by means of absorbent material or skimming devices. Some of the suggested boom structures have difficulty in encircling the entire layer of combustible liquid and frequently, portion of the layer pass over and under the booms.
Skimmer vessels, as described in United States Patent No.
3,219,190 issued NOvember 23, 1965 to Thune, are suggested to remove the oil from the surface of the water by a mechanical means and to collect the oil in collector vessels. It has been found, however, that the layer of oil is relatively thin as compared with the body of water on which it is floating and an inordinate amount of water must be removed with the oil. The water removed is contaminated with the oil and must also be ZO collected in the collector vessel and disposed of with the oil to prevent further contamination.
United States Patents Nos. 3,661,495, 3,661,496 and 3,661,497, all issued May 9, 1972 to Johnson, are directed to processes for posi-tioning a monolayer of cellular ceramic nodules on the surface of a layer of combustible liquid and completely burning the layer of combus-tible liquid therebeneath. These processes provided a method for successfully burning substantially all of the layer of combustible liquid beneath the nodules. The processes described in the above-mentioned patents do not, however, confine the burning to selected areas and the body of water with the layer of combustible liquid thereon is sub~ect to the prevailing wind and wave action.
Canadian Patent No. 972,692 issued August 12, 1975 to R.B.
- 1 - '3~
l~eagler~ provides an improvement to the above-mentioned United States patents, by providing a generally U-shaped, buoyant, self-propelled vessel which floats partially submesged in a body of water and has a longitudinal channel portion with a front opening. The vessel has an open bottom portion beneath the longitudinal channel portion. As the vessel advances into a body of water, a band of water with the layer of combustible liquid floating thereon, enters the channel portion of the vessel. The rate at which the combustible liquid, as a layer, enters the channel portion of the vessel is dependent on the forward speed of the vessel and the speed is controlled so that substantially all of the layer of combustible liqudd is removed by burning before the band of water passes under the rear portion of the vessel. As the vessel advances, the band of water with the layer of combustible liquid moves through a mixing chamber within the channel portion where a monolayer of cellular ceramic nodules are positioned on the top surface of the layer of combustible liquid. The layer of combustible liquid with the nodules floating thereon, moves rearwardly with the for~ard advance of the vessel into a combustion cham~oer where the layer of combustible liquid is ignited and burned. The nodules within the combustion chamber are recycled to the mixing chamber where they are again positioned as a -.
monolayer on the upper surface o~ the layer of combustible liquid.
Combustion air is provided for the combustion chamber and the combustion gases may be subjected to a secondary burning in the stack to remove the combustible materials in the combustion gases and provide a substan-tially smoke-free waste gas. Apparatus is provided to seal the combus-tion chamber and mixing chamoer if the burning of the combustible liquid tends to spread beyond the receiver.
Skimming devices are also known for skimming a floating con-taminant from the surface of the liquid upon which it is floating and is particularly applicable in the area of controlling oil refinery pollution.
~hile skimming apparatuses in general are known to the art, many problems are experienced wlth their use. These problems include the fact that quite often large quantities of water are collected along with the oil to be gkimmed, thus greatly reducing the effectiveness of the separation. Weather conditions also often adversely affect the degree of separation afforded by those devlces now known in the art.
For example, cold weather causes the heavier fraction of the floating oil to congeal in large masses whlch are dlfficult to collect from separator pickup surfaces. Furthermore, this semisolid oil often causes clogging problems in collection troughs and associated piping. Converse-ly in warm weather the oil spreads out in a thin surface coating thewater and making effective separation difficult. In both cases, exces-sive amounts of unwatted water are collected.
Canadian Patent No. 825,483 issued October 21, 1969 to L.W.
Lefke et al attempted to provide means to maximize oil recovery while minimizing water pickup, and to eliminate detrimental temperature effects on oil viscosity by providing means for varying and controlling the temprature of the separator pickup surfaces. This was alleged to be provided by means for guiding a stream of liquid which has a top immis-cible layer, a bottom immiscible layer and an interface therebetween. A
drum is provided having a serrated hydrophobic pickup surface and means are provided for rotatably mounting the drum so that its axis of rotation is so located above the stream that the roots of the serrations of the hydrophobic surface lie on the interface when the serrations, as viewed in cross-section, are at their limit of downward travel. Means are pro-vided for removing liquid from the hydrophobic surface of the drum, the removing means including a squeegee blade making continuous contact with the surface of the hydrophobic pickup surface. Means are provided for varying the rate of rotation of the drum, and means are optionally provided for controlling the temperature of the hydrophobic pickup surface.
There are situations, however, which do not favour the use of the above-described conyentional skimming or burn-off devices for either or both of the following reasons, namely: Ca) the quantity of oil is too large as is possible in the case of an offshore well blow-out;
(b) there is too much wave action.
Accordingly, it is an ob~ect of a broad aspect of this inven-tion to provide an improved floating device for the recovery of oil from oil spills.
By a broad aspect of this invention, a floating oil recovery device is provided comprising: a main platform; a plurality of radiating float members projecting therefrom, a plurality of concentric perforated open cylindrical baffles depending therefrom, providing a plurality of annular passages and a central cylindrical core; a suction pump disposed within the cylindrical core, the pump being flexibly suspended therewithin to float with its intake substantially at the oil-water interface.
By one variant of this invention, the cylindrical baffles are provided with circular flanges projecting into the annular passages.
~ - By a variation-of this variant,a plurality of vertically spaced-apart flanges are provided.
By another variant of this invention,:the radiating float members comprise a plurality of outrigger floats, each supported by an arm having an elbow capable of articulated adjustment.
By yet another variant of this invention, the suction pump includes a discharge tube, and the discharge tube is connected to the pump by flexible means.
B - 4 _ .
`` 1076038 By a variation of this variant, the discharge tube is freely vertically movable with relation to the main platform.
By another aspect of this invention, a method is provided for skimming and suctioning spilled oil from a body of water, the method including the steps of: '(1) passing waves containing the oil spill through a plurality of consecutive perforated baffles, thereby progres-sively reducing the height of the ~ave; (2) providing a central collec-ting core of relatively calm water; ~3) positioning a free floating .. , . -- . . . _ . _ . . ...................... . . . .. .. . .suctlon device therein, the device having an intake at the oil-water inter-face; and (4) operating the free floating suction device to suction off spilled oil in the central collecting core and (S) providing discharge means connected to the free floating suction device to remove the oil collected by the suction device.
Thus, the device according to an aspect of this invention comprises two parts. The first part is a series of concentric wave baffles making up a unit which is supported by outrigger floats to provide a wide "stance" and stability. This unit provides an area of chop-free water in the centre where the second part operates.
The second part is a free floating skimming device which drains off the top few inches of oil and/or water which is then pumped out to be collected or burned in an oil-well testburner which can typically accept up to 50%
water. The skimming nozzle is free to follow changes in wave height by being unrestricted in vertical movement independent of the wavebreaker which sup-ports it. It can also f~llow the changes in waveslope by being free to tilt in any direction through the use of a flexible connection. This ensures that the skimmer's intake remains parallel and just below the water level at all times. By ad~usting the buoyancy the intake can be kept so that the oil film can be collected with relatively little water.
3B s - , :. , :.
~ ' ;. ' :
10~6038 The primary pump can be incorporated into the skimming device and driven by hydraulics or any other pumping system can be mounted on the floating wave baffle unit, directly above the ski~mer.
In the accompanying drawings, Figure 1 is a partial cutaway view of the device of one aspect of this invention; and Figure 2 is a section through line II-II of Figure 1.
The floating oil recovery-device, shown generally as 100, is basically intended to provide a platform for supporting the equipment necessary to skim and remove spilled oil from a water body. In order to operate efficiently under adverse weather conditions such as choppy waters, certain features form part of the construction of the device, thus providing an adYantage in the operation of the device.' In order to maintain the'devlce in a stable floating position, outrigger floats 110 rest belo~ supporting arms 111 which radiate from the platform 112 of the device.' Supporting arms 111 have an elbow 113 which allows the floats 110 to be rigidly supported from the platform while the bulk and weight of the'supporting arms 111 is minimized. By providing a pivotal adjustment to the supporting arms 111, the floats 110 can be lowered or raised to obtain the desired platform height in rela-tion to particular wave conditions. The elbows 113 also serve the pu -pose of providing adjustment to the position of the float through arti-culating adjustments. In a preferred embodiment, the floating device has four outrigger floats; however, as long as symmetry is maintained, more outrigger floats may be provided.' -::. - . .
. . . : . : .
.' ~" ~ .
1076~38 Referring now to the main body of the floating oil recovery device 100, the platform 101 has a plurality of concentric depending open cylindrical baffles 114, 116, 118, 120 provided with a plurality of perforations 117.
The baffles are partially submerged below the water surface 115. The spaced-apart perforations 117 are of suitable size to allow the passage of the oil infested water into the concentric annular passages 122, 124, 126 between baffles 114, 116, 118 and 120, respectively. Baffle 114 is provided, along - its inner wall, with a plurality of vertically spaced-apart downwardly depend-ing flanges 128, to assist in calming the agitated water as it passes through perforations 117. Similarly, baffles 116 and ~18 are provided with such flanges 128 both on their outer walls and their inner walls, and baffle 120 is provided with such flanges 128 on its outer wall.
Within the inner core 121 enclosed by the third baffle 120 is a relatively calm area where an oil recovery pump 121 is disposed. The pump is described in copending Canadian patent application Serial No. 253,7~2 filed June 1, 1976 is suitably suspended from the platform 101 by means of a flexi-ble connection 123. The outlet pipe 125 is connected to pump 127 by means of a flexible conduit 129 and elbow pipe 131. Pipe 125 is free to move ver-tically within roller bearing retainer 133. Thus, any wave - 6 a -. : , .
: , .
, - "
iO76038 or turbulent water which strikes the outside surface of baffle 114 continues through perforation 117 towards the pump 121 and ls progres-sively reduced in height with esch passage through the concentrlc baffles 116, 118, 120 and contact with the flanges 12~. When entrance is gained i~to the central collecting area 119, the motion of the water has been substantiall~ reduced, and the pump 121 is able efficlently to skim and suction off the oil resting on the surface of the relatively calm and confined water. The floating pump 121 is furthermore able to cope with any remaining minor water motion as a result of its flexible connection 123 and its "free'floating" pipe connection via retainer 133 to the platform 112. The'liquid which is suctioned off is removed by a conventional pump 127 positioned on the platform 112 driven by motor 135 '' and is disposed of via outflo~ pipe 137 in a burner (not shown).
The entire device 100 can be either towed by a vessel or can be set up to provide its own motive means.
Claims (7)
1. A floating oil recovery device comprising: a main platform;
a plurality of radiating float members projecting therefrom, a plurality of concentric perforated open cylindrical baffles depending therefrom, providing a plurality of annular passages and a central cylindrical core;
a suction pump disposed within the cylindrical core, said pump being flexibly suspended therewithin to float with its intake substantially at the oil-water interface.
a plurality of radiating float members projecting therefrom, a plurality of concentric perforated open cylindrical baffles depending therefrom, providing a plurality of annular passages and a central cylindrical core;
a suction pump disposed within the cylindrical core, said pump being flexibly suspended therewithin to float with its intake substantially at the oil-water interface.
2. The device of claim 1 wherein said cylindrical baffles are provided with circular flanges projecting into the annular passages.
3. The device of claim 2 wherein a plurality of vertically spaced-apart flanges are provided.
4. The device of claim 1 wherein said radiating float members comprise a plurality of outrigger floats, each supported by an arm having an elbow capable of articulated adjustment.
5. The device of claim 1 wherein said suction pump includes a discharge tube, and wherein the discharge tube is connected to the pump by flexible means.
6. The device of claim 5 wherein the discharge tube is freely vertically movable with relation to the main platform.
7. A method for skimming and suctioning spilled oil from a body of water, said method including the steps of:
(1) passing waves containing said oil spill through a plurality of consecutive perforated baffles, thereby progressively reducing the height of said wave;
(2) providing a central collecting core of relatively calm water;
(3) positioning a free floating suction device therein, said device having an intake at the oil-water interface;
(4) operating said free floating suction device to suction off spilled oil in said central collecting core;
and (5) providing discharge means connected to said free floating suction device to remove said oil collected by said suction device.
(1) passing waves containing said oil spill through a plurality of consecutive perforated baffles, thereby progressively reducing the height of said wave;
(2) providing a central collecting core of relatively calm water;
(3) positioning a free floating suction device therein, said device having an intake at the oil-water interface;
(4) operating said free floating suction device to suction off spilled oil in said central collecting core;
and (5) providing discharge means connected to said free floating suction device to remove said oil collected by said suction device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA253,841A CA1076038A (en) | 1976-06-01 | 1976-06-01 | Skimmer surrounded by perforated baffles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA253,841A CA1076038A (en) | 1976-06-01 | 1976-06-01 | Skimmer surrounded by perforated baffles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1076038A true CA1076038A (en) | 1980-04-22 |
Family
ID=4106103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA253,841A Expired CA1076038A (en) | 1976-06-01 | 1976-06-01 | Skimmer surrounded by perforated baffles |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1076038A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294002A1 (en) * | 1987-06-04 | 1988-12-07 | Norddeutsche Affinerie Ag | Clarified-liquid outlet device for settling tanks |
| EP0679767A1 (en) * | 1994-04-26 | 1995-11-02 | JPM INGENIEURTECHNIK GmbH | Apparatus for extracting a liquid from waters |
| WO2017133922A1 (en) * | 2016-02-01 | 2017-08-10 | Alfred Römhild | Device for removing impurities from bodies of water |
-
1976
- 1976-06-01 CA CA253,841A patent/CA1076038A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0294002A1 (en) * | 1987-06-04 | 1988-12-07 | Norddeutsche Affinerie Ag | Clarified-liquid outlet device for settling tanks |
| EP0679767A1 (en) * | 1994-04-26 | 1995-11-02 | JPM INGENIEURTECHNIK GmbH | Apparatus for extracting a liquid from waters |
| WO2017133922A1 (en) * | 2016-02-01 | 2017-08-10 | Alfred Römhild | Device for removing impurities from bodies of water |
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