JPH07100472B2 - Water spilled oil recovery device - Google Patents

Description

Detailed Description of the Invention a. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water surface spilled oil recovery device for recovering oil spilled on the surface of water such as a sea surface and a lake.

B. 2. Description of the Related Art Conventionally, when oil has spilled to the surface of water such as a sea surface or a lake, a means for collecting the spilled oil is to collect the oil after coagulating it by spraying a coagulant onto the spilled oil surface. Is normal,
At present, the coagulated oil is directly disposed of because it is chemically difficult to process after recovery and difficult to reuse. However, the direct disposal of the coagulated oil is not only strictly regulated from the viewpoint of pollution prevention, but also has a problem from the viewpoint of effectively reusing valuable oil resources.

C. DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention enables the floating oil that has flowed out to the surface of the water such as the sea surface and lakes to be recovered as it is without any chemical treatment, and a method other than the conventional treatment as waste oil is used. The aim is to obtain a water surface spilled oil recovery device that contributes to pollution prevention while effectively utilizing the spilled oil.

D. Means for Solving the Problems The present invention has been made in view of the above viewpoints, and has an inlet at an upper portion of a container and an outlet at a lower portion thereof, and an inlet in which the inlet is divided into a plurality of upper and lower portions. An oil / water intake portion provided with a partition wall that gradually flows down from the intake port and an intake path that is divided below the partition wall by a movable wall having a lower end as a free end, and a lower portion of the oil / water intake portion The oil / water pumping device including an oil / water pumping device provided with a tank body that connects the outlet of the tank to the lower end and a submersible pump stored in the bottom of the cavity, and an oil / water intake system including a float tank connected to the oil / water intake part. An input device, a plurality of partition tanks that partition a storage tank having a large volume by partition plates, a drain valve attached to the bottom of the side wall of each partition tank, and an oil pump for pumping installed in the final partition tank , Means for overflowing from the upper end of the partition plate to the next adjacent sorting tank , A pretreatment tank communicating with the first tank at a lower part is provided in front of the first tank of the sorting tank, and the pretreatment tank has a plurality of upper buffer plates having a large number of pores at the upper end thereof. Are stepped so that their pore positions are vertically shifted from each other and are stacked horizontally, and an opening slope is provided immediately below the upper buffer plate toward the wall surface of the first tank and is opened on the wall surface. An oil-water separation device provided with a lower cushioning material in which convex angle materials leave a slight gap in the lateral direction and the mounting positions in the vertical direction are staggered.
Means for causing the oil water stored in the oil pumping device to flow out above the upper buffer plate of the pretreatment tank by an underwater pump,
A gate structure configured in the space between the hulls configured on both sides,
Means for suspending and instructing the oil / water intake device and the oil / water separator provided in the gate structure, and the upper concentrated oil component in the final division tank of the oil / water separator provided in the hull An object of the present invention is to provide a water surface outflow oil recovery device including a catamaran type oil storage vessel provided with a recovery storage tank for pumping and recovery by an oil pumping pump.

E. Operation and Example Hereinafter, the configuration of one embodiment of the present invention will be described together with the operation with reference to the drawings.

The main components are an oil / water intake device A for taking in oil / water, an oil / water separator B for separating the oil / water taken in by the oil / water intake device A, and a twin cylinder for storing the oil component separated by the oil / water separator B. It is a type oil storage tank C.

The oil / water intake device A has intakes 16, 18, 20 and 16 which are formed by vertically dividing the inlet 12 of a container 10 having a vane-shaped inlet 12 and an outlet 14 at the bottom. , 18, 20 are provided with partition walls 22, 24 that gradually flow down from them, and below the partition walls 22, 24, intake passages 30, 32, 34 divided into three sections by movable walls 26, 28 having lower ends as free ends. An oil / water intake part a having a mesh screen 36 stretched at the inlet 12 and a tank body 38 for receiving and fixing the lower outlet 14 of the oil / water intake part a at its lower end are provided, and a submersible pump is provided at the bottom of the cavity. An oil / water pumping device b in which 40 is stored and a box 42 are connected to the outside of the oil / water intake part a, and a compressed air gas supply pipe 46 and an air vent valve 48 are attached to the top plate 44 thereof. The bottom plate 50 is composed of a float tank c provided with a water passage 52. 54 is a power cord of the submersible pump 40.

The oil / water separator B has a first tank 62 and a second tank 6 in which a storage tank 56 having a large volume is partitioned by partition plates 58 and 60.
4, a pretreatment tank 68 that communicates with the first tank 62 at a lower portion is provided in front of the first tank 62 and the three divided tanks of the third tank 66. It is designed to successively overflow from the upper end to the next adjacent sorting tank, that is, the first tank 62 to the second tank 64, and the second tank 64 to the third tank 66 in sequence. At the upper end of the upper part, three upper holes 70, 74, and 76 having a large number of fine holes 70 are formed so that the positions of the fine holes are shifted vertically from each other so as to be horizontally stacked. Buffer plate 7
Immediately below 2, 74, and 76, an upward slope is provided toward the wall surface 78 of the first tank 62, and an upwardly convex angle member 82 that opens in the wall surface 78 leaves a slight gap in the lateral direction. There is a lower cushioning material 82A arranged in a staggered manner with the mounting positions in the vertical direction offset from each other, and the oil water stored in the tank body 38 by the submersible pump 40 is provided by the flexible hose 84. It is configured so as to flow out above the upper buffer plates 72, 74, 76 of the pretreatment tank 68 via the storage control valve 86. The first tank 62 and the second tank of the oil / water separator B
The side walls 88 of the No. 64 tank and No. 3 tank 66 are provided with viewing windows 90 through which the oil level inside the tank can be visually recognized from the outside. The inside surfaces of the viewing windows 90 are dirty and the oil level can be visually recognized. A brush 92 capable of wiping the dirt off when it is difficult and a handle 94 for operating the brush are provided, and a drain valve 96 is attached to the bottom of each side wall 88, which is the final tank No. 3. An oil pumping pump 98 is installed in the tank 66, and further, the first tank 6
2. A vaporization discharge pipe 100 for setting the vaporization discharge hole for discharging the vaporization of the oil stored in the second tank 64 and the third tank 66 to the outside is provided on the top plate of each tank. ing.

The catamaran type oil storage vessel C has hulls 101 and 102 formed on both sides with a required space and a gate structure 10 formed in a space between them.
The gate structure 104 comprises four, and both ends of arm rods 38a, 38a provided on both sides of an oil pumping device b having a submersible pump 40 for suspending and supporting the oil and water intake device A are lifted and lowered. Freely supporting tank lifting valve controls 106, 106, and a lifting winch 1 with a hook that hangs on a hanging ring 56a attached to a predetermined portion on both sides of the oil / water separator B for suspending and supporting it.
08 is provided, and the hulls 102, 102 are provided with a recovery storage tank 110 for collecting and collecting the upper concentrated oil component in the third tank 66 of the oil / water separator B by the oil pumping pump 98. In addition, it is equipped with internal combustion engines, generators, and other machines, instruments, devices, etc. that are required for voyages that are normally installed by ships.

Next, the operation of the device constructed according to the above embodiment will be described.

The oil / water intake device A and the oil / water separation device B are attached to the gate structure 104 of the catamaran type oil storage vessel C. In this case, the oil and water intake device A and the oil and water separator B are
It is designed to be lifted so that it does not come into contact with the water surface of the voyage, and the water resistance during traveling is minimized as much as possible. Upon arrival at the spilled oil recovery site, the oil / water intake device A and the oil / water separation device B are lowered onto the water surface and floated on the water surface.

At the oil spill recovery site, the spilled oil, which has a relatively low specific gravity compared to water, floats near the water surface. Therefore, it is better to prevent the spilled oil from spreading with an oil fence or the like in a localized case. . At the spilled oil recovery site, the oil / water intake device A lowered to the surface of the water has a float tank at the position of the inlet 12 of the oil / water intake part a so that the spilled oil / water near the surface of the water where the mixing ratio of oil to water is large is taken as much as possible. The buoyancy of c is adjusted by appropriately operating its compressor (not shown) to adjust the amount of water in box 42. Since the oil content ratio is closer to the water surface, it is advantageous to take in a layer as close to the water surface as possible in order to take in a large amount of oil content, but the water surface fluctuates due to waves, so the average water surface level The upper intake 16 of 12 is aligned. As a result, oil water is always sucked from the upper intake 16, but flows from the middle intake 18 when the water surface drops due to the waves, and from the lower intake 20 when the water surface further drops. As a result, normally, when oil water is taken in from the upper intake 16, it naturally flows also from the middle intake 18 and the lower intake 20, and when it is taken in from the middle intake 18, the lower intake 20 naturally comes.
Will come from. However, when it is flowing in from the upper stage intake 16 into which oil water having a relatively large oil content ratio flows, it also flows in from the middle stage intake 18 and the lower stage intake 20, but at that time, the upper stage intake passage 30 and the middle stage. The movable wall 26 partitioning the intake passage 32 is pushed by the fluid pressure of the oil water taken from the upper intake opening 16 to maintain the closed state.
The movable wall 28 that separates the lower intake passage 34 from the lower wall 32 also remains closed. Therefore, when the oil is taken in through the upper intake port 16, only the oil water flowing in through the upper intake path 30 flows out from the lower outlet 14 to the tank body 38. In the same manner, when oil is taken in from the middle-stage intake port 18, only oil and water flowing in through the middle-stage intake passage 32 pushes the movable wall 26 and opens the tank 38 from the lower outlet 14.
Only when it flows in from the lower intake port 20, the movable walls 26, 28 are pushed open via the lower intake path 34 and flow out from the lower outlet 14 to the tank body 38. As a result, the oil / water having a relatively large oil content ratio is preferentially taken in, the inflow of the oil / water is not interrupted, and the storage amount of the tank body 38 is prevented from withering.

The oil water that has flowed out and stored in the tank body 38 of the oil / water pumping device b as described above passes from the bottom portion thereof to the submersible pump 40 through the flexible hose 84 and the flow rate adjusting valve 86 to the pretreatment tank of the oil / water separating device B. It flows out above the upper buffer plates 72, 74, 76 of 68. The oil / water flowing out onto the upper buffer plate is adjusted to an extremely quiet flow in the process of sequentially passing through a large number of pores 70 formed on the upper buffer plate, and a large number of convex portions are arranged immediately below the oil / water. In the process of flowing down between the angle-shaped angle members 82, the inside of the wall 78 of the first tank 62 is guided along the lower back surface of the angle member 82 filled with oil having relatively light specific gravity. Opening
It flows from 80 to the first tank 62.

The oil content of the oil water that has been roughly separated in advance in the pretreatment tank 68 previously rises from the wall surface 78 of the first tank 62 toward the water surface,
The remaining water having a very small oil content flows from the lower part of the pretreatment tank 68 to the first tank 62 from the lower part. Further, the first tank 62
The oil and water are decomposed while staying in the tank, and the upper layer having a large oil content ratio overflows from the top to the next No. 2 tank 64. In the No. 2 tank 64, the oil-water separation operation similar to that in the No. 1 tank 62 is naturally performed, and the concentration of the oil content further proceeds. And the final third
In the tank 66, the final concentration of oil content is continuously concentrated. The oil water level in each of the first tank 62, the second tank 64, and the third tank 66 is viewed from the outside through a viewing window 90 at any time to visually check the oil water surface of each tank, and separate the oil water according to the type of spilled oil. Since the time required for the pretreatment tank is different, adjust the flow rate adjusting valve 86.
The amount of oil and water flowing into 68 is adjusted to maintain the optimal storage volume and residence time in each tank. Then, the drainage valve 96 is appropriately opened to drain the accumulated amount that is as close as possible to the water that has accumulated at the bottom of each tank, and the processing capacity is leveled.

The oil content densely concentrated in the upper layer of the third tank 66 is pumped up by the oil pumping pump 98 to the recovery storage tank 110 of the catamaran type oil storage tank C, transferred, collected and stored.

The above recovery work is carried out until the spilled oil is collected.

F. EFFECTS OF THE INVENTION As will be apparent from the above description, the present invention is capable of recovering the spilled oil floating on the water surface of the sea surface, lakes and marshes as it is without adding any chemical treatment at the spill site. This is a water surface spilled oil recovery device that has excellent performance such as effective utilization of the spilled oil as well as simple refining of the recovered oil and contribution to pollution prevention.

[Brief description of drawings]

FIG. 1 is a schematic front view showing the configuration of an oil / water intake device A and an oil / water separation device B, which are essential parts of one embodiment of the present invention, FIG. 2 is a schematic plan view of the same, and FIG. 3 is a similar view from the bow side. Fig. 4 is a schematic side view, Fig. 4 is a sectional view taken along line IV-IV in Fig. 2, Fig. 5 is a plan view showing the structure of the upper buffer plate, and Fig. 6 is an upward slope toward the wall surface of the first tank. The convex angle members that are open to the wall surface are arranged in a row in the lateral direction with a slight gap therebetween, and the lower cushioning members that are arranged in a zigzag manner with the vertical mounting positions offset from each other are provided. FIG. 7 is a schematic plan view showing the entire structure of the first embodiment of the present invention, and FIG. 8 is a schematic side view as seen from the bow side of the same. .

Claims (1)

[Claims] 1. Intakes 16, 18, 20 having an inlet 12 at an upper portion and an outlet 14 at a lower portion of the body 10 and dividing the inlet 12 into a plurality of upper and lower portions.
And the intake passages 30 divided into a plurality of sections by partition walls 22 and 24 that flow down gradually from the intake ports 16, 18 and 20, and movable walls 26 and 28 whose lower ends are free ends below the partition walls 22 and 24. , 32, 34
An oil / water pumping unit provided with an oil / water intake part a, a tank body 38 connecting the lower outlet 14 of the oil / water intake part a to the lower end, and a submersible pump 40 stored in the bottom of the cavity. Device b
And an oil / water intake device A composed of a float tank c connected to the oil / water intake part a, a plurality of sorting tanks 62 in which a storage tank 56 having a large volume is partitioned by partition plates 58, 60, 64 and 66, and the side wall 88 of each division tank
A drain valve 96 attached to the bottom of the tank, an oil pumping pump 98 installed in the final partition tank, a means for overflowing from the upper ends of the partition plates 58 and 60 to the next partition tank sequentially, and the partition tank First tank 62
Is provided with a pretreatment bath 68 communicating with the first bath 62 at a lower part thereof, and the pretreatment bath 68 has a plurality of upper buffer plates 72, 74 having a large number of pores 70 at the upper end thereof. , 76 are stepped so that their pore positions are vertically offset from each other and are stacked horizontally, and an upward slope is provided directly below the upper buffer plates 72, 74, 76 toward the wall surface 78 of the first tank 62. The lower cushioning material having the opening 80 formed in the wall surface 78 and the convex angle material 82 with a slight gap in the horizontal direction and the vertical mounting positions being staggered.
An oil / water separator B provided with 82A, means for causing the oil / water stored in the oil / water pumping device b to flow above the upper buffer plates 72, 74, 76 of the pretreatment tank 68 by the submersible pump 40, configured on both sides Gate structure 104 formed in the space between the hulls 102 and 102, and the oil / water intake device A provided in the gate structure 104
And means for instructing the suspension of the oil / water separation device B and the upper concentrated oil component in the final sorting tank 66 of the oil / water separation device B, which is provided in the hulls 102 and 102, and the oil pumping pump.
A water surface spilled oil recovery apparatus comprising: a catamaran type oil storage vessel C provided with a recovery storage tank 110 for pumping and recovery by 98.