JPH11104634A - Oil recovery apparatus and oil-water separation tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject articles at a low cost so that even a local- government such as a prefecture or a city is able to get them by providing two oil fences to a plurality of oil-water separation tanks and providing a tugboat pulling two oil fences and a belt conveyor feeding oil mixed with water in the oil-water separation tank. SOLUTION: An oil recovery apparatus is constituted of two connected bottomless oil-water separation tanks 1, 1, two oil fences 2, 2 attached to the bottomless oil-water separation tanks 1, 1, the tugboats 3, 3 pulling these oil fences 2, 2, a belt conveyor 4 feeding oil mixed with water in the single bottomless oil-water separation tank 1, the transport ship 5 for transferring the oil separated in the bottomless oil-water separation tanks and the float 6 such as a float bag 6 or the like having the belt conveyor 4 arranged thereto. In this oil recovery apparatus, the oil separated from water in one bottomless oil-water separation tank 1 can be transferred to the transport ship by a pump or the like while the oil mixed with water in the other bottomless oil-water separation tank 1 is fed in by the belt conveyor 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil recovery apparatus and an oil / water separation tank in the case where oil such as crude oil or heavy oil flows into the sea, lake, river, or the like due to an accident of a tanker or an oil pipe.

[0002]

2. Description of the Related Art The Naotoka oil spill accident occurred in the Sea of Japan last year, but the arrival of a full-fledged oil recovery vessel was delayed, and fishing boats were collected by a primitive method such as pumping oil with a scoop, and oil was collected on the coast. Has been contaminated. This is because the construction of a full-scale oil recovery vessel requires a large amount of money and the number of vessels is small.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a low-cost oil recovery apparatus and an oil-water separation tank which can be prepared by local governments such as prefectures and cities.

[0004]

The oil recovery device of the present invention is as follows. One or more oil / water separation tanks, two oil fences attached to the oil / water separation tank, a tugboat for towing the two oil fences, and a belt conveyor for carrying oil mixed with water into the oil / water separation tank. It is characterized by comprising. The above-described oil-water separation tank is characterized in that it is a plurality of bottomed or bottomless oil-water separation tanks or a bottomed or bottomless oil-water separation tank divided into a plurality of sections. The oil-water separation tank described above is characterized in that it is composed of a bottomless oil-water separation tank and a bottomed oil-water separation tank. An oil removing device is provided at a dropping portion of the belt conveyor described above. The oil-water separation tank of the present invention is as follows. It is a bottomless oil / water separation tank composed of a floating body such as an inflatable and stretchable air bag or Styrofoam, a sheet hanging thereunder, and a weight attached below the sheet. It is a bottomed oil / water separation tank which is installed so as to be positioned above the water surface by a floating body such as an inflatable and stretchable air bag or styrofoam.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Two oil-water separation tanks connected to each other, two oil fences attached to the two oil-water separation tanks, and two tugboats pulling the two oil fences, With a belt conveyor that carries oil mixed with water into the oil-water separation tank,
An oil recovery device was configured. The oil / water separation tank may be a small tanker, a non-self-propelled ship, a bottomed oil / water separation tank such as a bottomed cylinder, or a tubular oilless water separation tank. The oil fence may be a conventionally used oil fence, or may be a thing in which a sheet made of plastic or cloth or a small mesh is attached under the floating body, and a weight is attached below it. When a small mesh is used, if the oil is heavy oil or the like, the oil adheres to the mesh and does not flow out. Fishing boats can be used for towing the oil fence. The water-mixed oil carried into the oil-water separation tank is separated with time due to the difference in specific gravity between water and oil, and the separated oil can be transferred to a carrier using a pump or the like. In one oil / water separation tank, oil cannot be transferred while oil / water separation is performed. However, if there are multiple oil / water separation tanks, another oil / water separation is performed while the oil in the oil / water separation tank is transferred. Oil mixed with water can be carried into the tank. The belt conveyor may be installed on a floating body such as a floating bag, may be installed between the oil-water separation tank and the floating body, or may be installed in the oil-water separation tank.

As the above-described oil-water separation tank, a plurality of bottomed or non-bottomed oil-water separation tanks or a bottomed or non-bottomed oil-water separation tank divided into a plurality of sections is used. It is more convenient to use a plurality of vessels in the case of a small boat or the like in which the oil-water separation tank cannot run on its own, and it is convenient to use a tank divided into a plurality of sections in the case of a small tanker or the like. If the oil / water separation tank has a bottom, the remaining water must be drained after the oil / water separation is performed and the oil is transferred, but if the bottomless oil / water separation tank is used, the water must be drained. There is no. As the oil-water separation tank described above, a bottomless oil-water separation tank followed by a bottomed oil-water separation tank was used. Since oil / water is separated by the bottomless oil / water separation tank and oil / water is separated by the bottomed oil / water separation tank, the oil / water separation is performed more efficiently. The oil / water separation tank may be a bottomed oil / water separation tank followed by a bottomless oil / water separation tank, and the bottomed oil / water separation tank and the bottomless oil / water separation tank may be arranged side by side. An oil remover was provided at the dropping part of the above-mentioned belt conveyor. If the oil is sticky oil such as heavy oil, it will be difficult to carry it into the oil / water separation tank due to the oil adhering to the belt, but it will be easy to carry it in by removing the oil into the oil / water separation tank with an oil remover. . The oil removing device can be attached to a non-movable portion or the like of the belt conveyor.

[0007] A floating body such as an inflatable and stretchable air bag or styrofoam, a plastic or cloth sheet (including a small mesh) hanging under the floating body, and a weight attached below the sheet are used. A bottom oil / water separation tank was built. The bottomless oil / water separation tank prevents the floating body from sinking and prevents the oil carried by the floating body and a sheet of plastic or the like with a weight hanging down from flowing out to the outside. It can be transferred to a bottomed oil / water separation tank or carrier ship by floating, and there is no need to discharge water. Therefore, it can be used as a bottomless oil / water separation tank of the oil recovery apparatus described in the above-mentioned ~. The bottomed oil / water separation tank was installed above the water surface by a floating body such as an inflatable and stretchable air bag or Styrofoam. Since the bottomed oil / water separation tank is installed so as to be located above the water surface of the sea or the like, the inside of the bottomed oil / water separation tank is less susceptible to waves and the oil / water separation is performed more efficiently and separated. It is also convenient to drain the bottom water. The floating body may be a ship.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows two connected bottomless oil / water separation tanks 1 connected together.
1; two oil fences 2.2 attached to the bottomless oil / water separation tank 1.1; two tugboats 3.3 for pulling the two oil fences; and one bottomless oil / water separation tank 1 shows an example of an oil recovery apparatus comprising a viet conveyor 4 for carrying oil mixed with water into 1, a carrier 5 for transferring oil separated in a bottomless oil / water separation tank, and a floating bag 6 on which a belt conveyor 4 is installed. It is a floating body. As shown in FIG. 2, a spatula-shaped oil removing tool 7 is attached to a dropping portion of the belt conveyor 4, and the oil adhering to the belt is peeled off into the bottomless oil-water separation tank 1 and dropped. . As shown in FIG. 3, the bottomless oil / water separation tank 1 includes an inflatable and expandable air bag (floating body) 8, a sheet 9 made of plastic or cloth hanging thereunder, and a lead attached below the sheet 9. And a weight 10 such as a stone. The air bag (floating body) 8 may be a floating body such as styrene foam. In the oil recovery apparatus, while the oil mixed with water is carried into one bottomless oil / water separation tank 1 by the belt conveyor 4, the oil / water separated oil in the other bottomless oil / water separation tank 1 is pumped to the carrier. Etc. can be transferred. The oil / water separation tank may be a bottomless oil / water separation tank floating on a plurality of waters or a bottomless oil / water separation tank divided into a plurality of sections, and a plurality of bottomed oil / water separation tanks or a bottomed oil / water sectioned into a plurality of sections. It may be a separation tank. Also, one tank may be used instead of a plurality.

FIGS. 4 and 5 show another example of an oil recovery apparatus.
Alternatively, the bottomed oil / water separation tank 11 installed between the floating bodies or on the floating body so as to be located above the water surface by the plurality of floating bodies 6, the bottomless oil / water separation tank 1 provided on the front side thereof, and attached thereto. Two oil fences 2.2, two tugboats 3.3 for towing the two oil fences, and a bottomless oil / water separation tank 1.
Shows an example of an oil recovery device comprising a belt conveyor 4 for carrying oil mixed with water in the bottomed oil / water separation tank 11, and numeral 5 uses a pump to separate the oil separated in the bottomed oil / water separation tank 11. The oil carrier 7 is attached to a drop portion of the belt conveyor 4. 12 is oil separated in a bottomed oil-water separation tank, 13 is water such as seawater,
Reference numeral 14 denotes a water discharge pipe provided at the bottom of the bottomed oil / water separation tank 11. The discharge of the water 13 may be controlled by further raising the water discharge pipe 14 as shown in FIG.
The water 13 is naturally discharged out of the bottomed oil / water separation tank 11. Further, a valve or a cock may be provided, and opening and closing of the valve or the cock may be remotely controlled. The bottomless oil-water separation tank is provided with a water-mixed oil intake port at the tip, so that the oil in the boom is collected and the layer is thickened. The oil may be conveyed to a bottomless oil / water separation tank by a belt conveyor. Further, the oil fence may be attached to a floating body, and the attachment portion is not limited as long as both the bottomless oil / water separation tank and the bottomed oil / water separation tank are towed.

[0010]

The present invention is constructed as described above, and can provide a low-cost oil recovery apparatus and an oil-water separation tank which can be prepared by local governments such as prefectures and cities.

[Brief description of the drawings]

FIG. 1 is an overhead view illustrating an outline of an example of an oil recovery apparatus.

FIG. 2 is a side view showing a part of a bottomless oil / water separation tank and a belt conveyor.

FIG. 3 is a sectional view of a bottomless oil / water separation tank.

FIG. 4 is an overhead view illustrating an outline of another example of the oil recovery apparatus.

FIG. 5 is a side view showing the transfer of oil from a bottomless oil / water separation tank to a bottomed oil / water separation tank.

[Explanation of symbols]

1. Oil-water separation tank without bottom 2. Oil fence 3. Tugboat
4: Belt conveyor 5: Carrier 6: Floating body 7: Oil remover 8 Air bag (floating body) 9: Sheet 10: Weight 1
DESCRIPTION OF SYMBOLS 1 ... Bottomed oil-water separation tank 12 ... Oil 13 ... Water 14 ... Water discharge pipe

Claims (6)

[Claims] 1. An oil-water separation tank, one or more oil-water separation tanks, two oil fences attached to the oil-water separation tank, a tugboat pulling the two oil fences, and oil mixed with water in the oil-water separation tank. An oil recovery device, comprising a belt conveyor for carrying in the oil. 2. The oil recovery tank according to claim 1, wherein the oil-water separation tank is a plurality of bottomed or bottomless oil-water separation tanks or a bottomed or bottomless oil-water separation tank divided into a plurality of sections. apparatus. 3. The oil recovery apparatus according to claim 1, wherein the oil / water separation tank according to claim 1 comprises a bottomless oil / water separation tank and a bottomed oil / water separation tank. 4. An oil removing device is provided at a dropping portion of the belt conveyor according to claim 1.
Oil recovery device. 5. A bottomless oil / water separator characterized by being constituted by a floating body such as an inflatable telescopic air bag or styrofoam, a sheet hanging down therefrom, and a weight attached below the sheet. Tank. 6. A bottomed oil / water separation tank which is installed so as to be positioned on the water surface by a floating body such as an inflatable and stretchable air bag or styrofoam.