JP2000170143A - Run-off oil collecting fence material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily collect run-off oil and treat the collected oil by giving an oil-adsorbing capacity to respective fence materials constituting an oil fence. SOLUTION: This material is formed of a cylindrical bag body 1 with a certain length in which an oil-adsorbing material is filled, the ends are made mutually connectable, and oil is permeable into the inside. When many these bag bodies are connected and set afloat as an oil fence on an opened water face in a run-off area of oil, it prevents the run-off area of oil from dispersing and oil can be rapidly and efficiently adsorbed into the oil-adsorbing material in the inside of the fence material. Further, thereafter, respective fence materials are collected and incinerated in an incineration furnace or the like to burn only oily components and leave only perlite formed harmlessly. Since the perlite can be buried in ground as it is or disposed of after it has been ground to make sand, any pollution problem does not arise and hence, after treatment is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fence material for recovering spilled oil such as heavy oil, and more particularly to a method for quickly and easily spilling an oil on a so-called open water surface in the ocean, coast, port, or inland water such as a river or lake. The purpose is to enable efficient oil recovery.

[0002]

2. Description of the Related Art Conventional oil recovery operations in the event of an oil spill are performed by setting up an oil fence to prevent the diffusion of oil, and collecting and collecting floating oil or dispersing an oil dispersant to remove oil. It is common to collect after attaching.

[0003]

However, in the above-mentioned conventional oil fence, the oil boom is simply floated on the open water surface to prevent the diffusion of the oil. Etc., or by collecting the oil by adsorbing an oil adsorbent to adsorb the oil and then scooping it with a scooping net. However, the method of scooping with a scooping net is extremely inefficient, and even in the method of dispersing the dispersant, the dispersed dispersant sucks more water than oil rather than oil suction. Not only is the capacity extremely low, but the dispersant itself tends to settle below the water surface by sucking water, and the oil recovery efficiency is extremely poor. Also, no suitable solution has been found for the recovered oil at its disposal site or disposal. It is needless to say that a low oil recovery capacity causes remarkable destruction of the natural environment, including adverse effects on marine animals and plants.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention solves the above-mentioned various problems in the prior art, enables efficient oil recovery, and simplifies the processing of the recovered oil. Specifically, the inside is filled with an oil adsorbent, and the ends are connectable to each other. The present invention relates to a spilled oil recovery fence material comprising a bag.

[0005] A number of the above-mentioned oil spill recovery fence materials are connected and floated on an open water surface, thereby preventing an oil spill area from expanding and arranging the oil spill area around an oil spill area. The oil spill area is gradually reduced, and the spilled oil collecting fence material is positively brought into contact with the oil so that the oil penetrates into the bag body and the oil is adsorbed by the oil adsorbent in the bag body. Oil that has not been completely absorbed by the oil adsorbent is completely removed by, for example, scooping.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The concrete contents of the present invention will be described below with reference to an embodiment of a fence material for oil spill recovery shown in FIG. 1. Reference numeral 1 denotes a fixed length of a fence material. Represents a cylindrical bag body having a diameter, more specifically, a diameter: 12 to 40 mm, and a length: 80 to 120 mm.
A synthetic resin fiber such as nylon or tetron, or hemp or other relatively strong and preferably water-repellent fibers that are about the size and that allow oil to penetrate from outside to inside. The net material 2 is formed in a net bag shape.

The tubular bag 1 is filled with an oil adsorbent (not shown), and any type of oil adsorbent can be used as long as it adsorbs oil such as heavy oil drifting on an open water surface. Although it is not preferred, it preferably has a certain level of water repellency itself, and not only does not suck water, but also floats on water for a long time, has good oil absorbability, and is easy to treat after recovery. Good. As such a material, it can be said that granular pearlite obtained by firing obsidian is desirable.

The granular pearlite has an average particle size of 3 m.
m or less, the oil adsorption capacity is not very high, and conversely, if it exceeds 16 mm, it becomes difficult to adsorb the oil to the inner center, and the oil adsorption capacity also decreases, so that the average particle size is 4 to 15 mm. It is preferably within the range. In order to further increase the water repellency of the pearlite, it is desirable to coat the surface with a water repellent. As a water repellent to be coated, for example, use of a known water repellent such as a silica agent or silicone can be considered.

At both ends of the tubular bag 1 filled with the oil-absorbing material, connecting means 3 are provided with a length sufficient to be interconnected and connected to the adjacent tubular bag 1. A rope is attached, so that a plurality or a plurality of tubular bags 1 can be interconnected. As the connecting means 3 in this case, in addition to the rope described above, a nylon string,
Alternatively, any known connecting means such as a plastic band, and a hook with a stopper made of metal or plastic material can be used.

[Experimental Example] An oil adsorption experiment was carried out in the case of using pearlite having a mean particle size of 4 to 15 mm obtained by calcining obsidian as an oil adsorbent used in the present invention. In the experiment, as shown in FIG. 2, a relatively small pool P was installed, and an oil fence in which a plurality of fence materials of the present invention consisting of a tubular bag 1 were connected on the water surface was attached to the center of the pool P. Float so that it surrounds the part, and sprinkle oil 4 (Ministry of Transport designation B heavy oil) inside it, and make it a state of oil-water mixing,
The oil adsorbent filled inside the oil fence by gradually pulling the connecting means 3.3 provided at both ends of the oil fence to narrow the diffusion range of the oil 4 and bringing the oil into contact with the fence material composed of the cylindrical bags 1. It was made to adsorb in.

The results of the adsorption efficiency of the oil adsorbent indicate that about 163 cc of oil is absorbed per liter of perlite (about 16.3 liters of oil per 100 liter of perlite). It was found that the efficiency was high.

In the above-described configuration, a continuous oil fence is assembled by connecting a large number of tubular bags 1 constituting a fence material by using connecting means 3 provided at both ends thereof, and the oil flows out. Floating on the open water surface in the direction to cut off the flow of the area where the oil flows out, preventing the expansion of the oil spill area, and as shown in FIG. The oil spill area is gradually reduced by pulling the both ends, and the cylindrical bag 1 constituting the fence material is positively brought into contact with the oil 4 so that the oil 4 penetrates into the cylindrical bag 1. The oil 4 is adsorbed on the oil adsorbent in the tubular bag 1. Finally, the oil that has not been adsorbed by the oil adsorbent is finally scooped and almost completely collected and removed. The oil-absorbed cylindrical bag is later collected and incinerated using an incinerator or the like to leave only the harmless pearlite, which can then be buried in the ground or pressed and ground to form sand. And discard it.

[0013]

As described above, according to the present invention, a cylindrical bag having a fixed length through which oil can penetrate into the inside, which is filled with an oil adsorbent and whose ends can be connected to each other. Since it is a fence material for oil spill recovery consisting of a body, if it is connected in large numbers and floated as an oil fence on the open water surface of the oil spill area, it not only prevents the oil spill area from spreading, The oil penetrates from the surface of each fence material to the inside, contacts the filled oil absorbent, and is adsorbed by the oil absorbent. Therefore, in the event of an oil spill, it enables quick and efficient oil recovery, and later collects each fence material and incinerates it in an incinerator, etc., and burns only the oil, leaving only the harmless perlite remaining. This can be buried in the ground as it is, or can be crushed and pressed into sand, and discarded, so that there is no problem of pollution and post-processing is simplified.

Further, in the case where the surface of granular pearlite obtained by calcining obsidian used as an oil adsorbent is coated with a water repellent such as a silica agent, the buoyancy on the open water surface is further increased and water is completely absorbed. Therefore, the oil adsorption capacity increases by that much, and the amount of perlite used decreases, which is economical. Further, when the pearlite obtained by calcining obsidian used as the oil adsorbent is a granular pearlite having an average particle diameter of 4 to 15 mm, the oil absorption capacity is the highest, and the use of a relatively small amount of pearlite is sufficient for the oil. It can perform the adsorption function and is excellent in economic effect.

[Brief description of the drawings]

FIG. 1 is a front view of an oil spill fence material according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a large number of fence members of FIG. 1 are connected to collect spilled oil.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical bag 2 Net material 3 Connecting means 4 Oil P Pool

Claims (9)

[Claims] 1. A spilled oil collecting device comprising a cylindrical bag having a fixed length through which oil can penetrate, wherein an oil adsorbent is filled inside and an end portion thereof is connectable to each other. Fence material. 2. The spilled oil collecting fence material according to claim 1, wherein the cylindrical bag body having a fixed length through which oil can penetrate is a net-shaped net bag. 3. The spilled oil recovery fence material according to claim 1, wherein connection means are provided at both ends of the cylindrical bag body. 4. The spilled oil recovery fence material according to claim 1, wherein the connecting means provided at both ends of the cylindrical bag is a rope of a fixed length. 5. The spilled oil collecting fence material according to claim 1, wherein the connecting means provided on both ends of the tubular bag are connecting metal fittings. 6. An oil adsorbent filled in a cylindrical bag body is granular pearlite obtained by firing obsidian.
6. A fence material for collecting oil spills according to any one of Items 5 to 5. 7. The oil spill according to claim 1, wherein the oil adsorbent filled in the cylindrical bag is obtained by coating a water repellent on the surface of granular pearlite obtained by firing obsidian. Fence material. 8. The oil spill for oil spills according to claim 1, wherein the oil adsorbent filled in the cylindrical bag is a granular pearlite surface coated with a silica material as a water repellent. Fence material. 9. The oil spill according to claim 1, wherein the oil adsorbent filled in the cylindrical bag is pearlite having an average particle diameter of 4 to 15 mm obtained by firing obsidian. Fence material.