JP5155052B2 - Storage method of oil adsorbent - Google Patents

Description

  The present invention relates to a method for preserving an oil adsorbent that adsorbs, for example, oil that has flowed out to the surface of the water or oil that has leaked from various mechanical devices.

  Conventionally, various oil adsorbers disclosed in, for example, Japanese Patent Application Laid-Open No. 2003-144918 have been proposed as oil adsorbers that adsorb oil that has flowed out to the surface of the water or oil that has leaked from various mechanical devices.

  However, these conventionally proposed oil adsorbents hardly adsorb the oil that has flowed out to the water surface in actual use situations, and may not fully perform their functions.

JP 2003-144918 A

  The present invention has advanced further research and development on the aforementioned oil adsorbent, and as a result, has developed an innovative oil adsorbent storage method that exhibits unprecedented effects.

  The gist of the present invention will be described with reference to the accompanying drawings.

A method for preserving an oil adsorbent 3 that adsorbs oil composed of rice husk charcoal , wherein the oil adsorbent 3 is housed in a container 4 that does not vent together with an oxygen scavenger 5 and a desiccant 6 and sealed. The present invention relates to a method for storing an oil adsorbent that is characterized.

2. The oil adsorbent according to claim 1, wherein the rice husk charcoal is rice husk charcoal having a water content of 20% or less before being stored in the container 4. This relates to the storage method.

The method for preserving an oil adsorbent according to any one of claims 1 and 2 , wherein the rice husk charcoal is subjected to a surface active treatment.

The oil adsorbent storage method according to any one of claims 1 to 3 , wherein the oil adsorbent 3 is a bag 2 in which the rice husk charcoal is stored. It relates to the body preservation method.

5. The method for storing an oil adsorbent according to claim 4 , wherein a bag 2 made of a woven fabric or a non-woven fabric is adopted as the bag 2.

Further, in the method for preserving an oil adsorbent according to any one of claims 4 and 5 , a plurality of the bag bodies 2 are provided in series, and an end portion of the bag body 2 is formed of another bag body 2. The present invention relates to a method for preserving an oil adsorbent, characterized in that the oil adsorbent is continuously connected to an end portion.

Further, in the method for storing an oil adsorbent according to any one of claims 4 to 6, a locking portion 7 for locking a connecting member 10 such as a hook, a rope or a connecting ring to the end of the bag body 2. The present invention relates to a method for preserving an oil adsorbent characterized in that is provided.

  Since the present invention is configured as described above, the oil adsorbent can be maintained in a state of always exhibiting excellent oil adsorbing performance and excellent water floating performance. Become a method.

  Embodiments of the present invention considered to be suitable will be briefly described with reference to the drawings.

  As a cause of the conventional problem described above (the problem of hardly adsorbing oil that has flowed out to the surface of the water in an actual use situation and not fully performing its function), the inventor of the oil adsorbing member constituting the oil adsorbent I thought there might be a problem with the moisture content.

  In other words, oil adsorbents are usually stored for a long period of time and are used in emergencies. As a storage method, it is common to store them in a bag (plastic bag, hemp bag, etc.). It is. This is based on the premise that the oil adsorbing member that constitutes the oil adsorbing body has the performance of repelling water and adsorbing oil (water floating performance and oil adsorbing performance), and therefore the oil adsorbing body is stored. In this case, the oil adsorbing member constituting the oil adsorbing body must be prevented from absorbing moisture as much as possible, but the water absorption at the time of storage is not taken into consideration at all. Therefore, in reality, the oil adsorbing member constituting the oil adsorbing body absorbs moisture and water vapor during storage (this point has been confirmed), and thus is stored for a long time. In the meantime, the moisture content of the oil adsorbing member increased compared to the time of manufacture, and it was thought that the function could not be fully demonstrated in the actual use scene (the oil adsorbing member constituting the oil adsorbing body is porous The quality of oil adsorption is good. The porosity of the fine pores with the Chakubuzai, that is, determined by the water content.).

For moisture content and oil adsorption on the oil suction member constituting the oil adsorbent is verified by experiments, each prepared husk charcoal different water content to an oil suction member constituting the oil adsorbent chaff When the oil adsorption performance and the water floating performance regarding charcoal were tested, as shown in FIG. 1, when the water content was higher than about 20% (the water content 22.8% in FIG. 1 and the water content 34. It was confirmed that each performance (oil adsorption performance and water floating performance) suddenly decreased. In addition, from this experiment, it was also confirmed that a water content of 20% or less is desirable at the actual use level.

  In the first aspect of the present invention, the oil adsorbent 3, the oxygen scavenger 5 and the desiccant 6 are housed in a container 4 which is not ventilated and sealed and stored.

With this configuration, the function of the oxygen scavenger 5 and the desiccant 6 enables good long-term storage of rice husk charcoal constituting the oil adsorbent 3 having a low water content (for example, a moisture content of 20 due to moisture or the like over time). Can be preserved so that it does not exceed 100%), and when it is taken out from the container 4 at any time, it has good functions (for example, excellent oil adsorption performance and excellent water floating performance obtained at a moisture content of 20% or less) ) Can be obtained in a good storage state.

And further, a first aspect of the present invention, it is possible to prevent the spontaneous ignition during storage which is feared in the chaff charcoal that make up the oil adsorbent.

Specifically, when storing rice husk charcoal , which is generally a flammable solid, spontaneous ignition may occur when the temperature rises in an oxygen atmosphere, especially with a low moisture content. According to the invention described in claim 1, since the oxygen absorber 5 is housed in the container 4 together with the oil adsorbent 3, there is no oxygen that becomes a component of spontaneous ignition, so that spontaneous ignition occurs. It can be prevented as much as possible.

In addition, according to the second aspect of the present invention, the rice husk charcoal is rice husk charcoal having a water content of 20% or less in the state before being stored in the container 4 , so that the following effects can be obtained.

That is, when the rice husk charcoal with a water content of 20% or less is placed on the oil that has flowed to the surface of the water, it exhibits excellent oil adsorbing performance that adsorbs oil instantly and in large quantities, and it also floats well in water. Since the water floating performance is exhibited, the oil on the water surface can be adsorbed efficiently and satisfactorily. Rice husk charcoal is porous and has excellent oil adsorption performance.

In addition, rice husk charcoal also has a deodorizing effect and can deodorize the odor of the adsorbed oil.

Therefore, the rice husk charcoal having a water content of 20% or less has excellent oil adsorption performance and excellent water floating performance, and is particularly effective when treating oil that has flowed out to the water surface. Of course, it is also effective when processing oil such as oil leaked from various mechanical devices.

According to the invention of claim 3 , since the rice husk charcoal has been subjected to surface active treatment, for example, an oil film formed of oil that has flowed out to the water surface can be removed well.

That is, as described above, rice husk charcoal with a low water content can adsorb oil that has flowed to the water surface instantly by having excellent oil adsorption performance and excellent water floating performance, It is difficult to adsorb even the oil film formed on the water surface.

  This is because an oil film having a small mass is repelled due to excellent water floating performance.

In this respect, the invention according to claim 3 is that the rice husk charcoal is surface-actively treated, so that the oil absorption performance can be further improved and the water absorption performance can be improved, whereby the oil film can be favorably adsorbed.

  Therefore, when removing the oil film, it is preferable to use the one subjected to the surface activation treatment.

According to the invention of claim 4 , since the rice husk charcoal is stored in the bag body 2, only the oil can be adsorbed by the rice husk charcoal in the bag body 2, and it is scattered and handled. Compared with the case where rice husk charcoal, which is not good, is sprayed directly, the handling property becomes extremely good by storing the rice husk charcoal in the bag body 2.

Further, according to the invention described in claim 5 , since the bag body 2 made of woven fabric or non-woven fabric is adopted as the bag body 2, an oil adsorbent that exhibits a good function in rice husk charcoal can be obtained with certainty. .

According to the invention described in claim 6 , a plurality of bag bodies 2 are continuously provided, and an end portion of the bag body 2 is continuously provided so as to be separable from an end portion of another bag body 2. Therefore, it can be used in accordance with conditions (for example, the amount of oil spilled and the area of the oil) that are appropriately separated and used.

  Further, the connecting portion between the bag bodies 2 serves as a bending start point, and when the connecting portion is bent, the contact area with respect to the water surface is maintained corresponding to the shape change (ripple) of the water surface. In this respect, the oil adsorption efficiency can be improved.

According to the seventh aspect of the present invention, the end portion of the bag body 2 is provided with the locking portion 7 for locking the connecting member 10 such as a hook, a rope, or a connecting ring. When the bag body 2 is arranged at the site where it has been collected, or when it is recovered from the site, it is used as a site for locking the connecting member 10 such as a lifting hook, or when an oil fence is formed at the site where the oil has flowed out It can be used when a plurality of bag bodies 2 are connected using a connecting member 10 such as a rope or a connecting ring.

  Specific embodiments of the present invention will be described with reference to the drawings.

  The present embodiment is a method for storing the oil adsorbent 3 that adsorbs oil.

  The oil adsorbing body 3 according to this embodiment is obtained by housing the oil adsorbing member 1 in a bag body 2.

  Specifically, the oil adsorbing member 1 is rice husk charcoal (carbonized husk) or rice husk (uncarbonized rice husk), and has a moisture content of 20% (weight) or less by heat treatment.

  The rice husk charcoal according to the present embodiment is carbonized by indirect heating of a carbonization carbonization apparatus (a carbonization method in which rice husk is stored in a drum in which heated gas is arranged and carbonized), and cooling after carbonization is also indirect. It is cooled by cooling (a cooling method for cooling by storing rice husk charcoal in a drum in which cooling water is arranged in the surroundings).

  Therefore, the rice husk charcoal obtained in this way has a shape and volume substantially equivalent to those of rice husk and has a large surface area, so that it exhibits excellent oil adsorption performance and excellent water floating performance. It will be.

  Moreover, the rice husk charcoal or rice husk which comprises the oil adsorption member 1 has the outstanding oil adsorption performance and the outstanding water floating performance by making water content 20% or less by heat processing (refer FIG. 1, 2). ).

  The definitions of the moisture content, water floating rate, and oil suction rate shown in FIGS. 1 and 2 are as follows.

  The moisture content (weight) is obtained by the following formula based on a measurement principle called a loss on drying method.

Formula ((W−Wo) ÷ W) × 100 = moisture content (MOIST)
W: Initial sample mass Wo: Absolute dry mass

  The water floating rate is a rate calculated from the amount of what floats on the water and what sinks when a predetermined amount is floated on the water.

  The oil suction rate is defined as the amount of oil sucked by the standard moisture content (1.1% for rice husk charcoal, 1.0% for rice husk charcoal), and each water content relative to this. It is a rate calculated from the amount of oil inhaled.

Further, when the oil adsorbing member 1 made of rice husk having a water content of 20% or less is disposed on the oil that has flowed out to the surface of the water, the oil adsorbing performance is inferior to the oil adsorbing member 1 made of rice husk charcoal described above, but the rice husk By setting the water content of the water to 20% or less, it has good oil adsorption performance and water floating performance that can sufficiently meet the practical level.

This point has been confirmed by experiments, and when rice husks having different moisture contents were prepared and oil adsorption performance and water floating performance were tested for each rice husk, the moisture content was higher than about 20% as shown in FIG. As the rate increased (per boundary between the moisture content 17.8% and the moisture content 31.7% in FIG. 2), it was confirmed that each performance (oil adsorption performance and water floating performance) suddenly decreased. From this experiment, it is considered that a water content of 20% or less is desirable at the actual use level.

In addition, the oil adsorbing member 1 made of rice husk requires less energy for commercialization than the oil adsorbing member 1 made of rice husk charcoal, which requires a lot of energy for carbonization, and can be manufactured at low cost. Can be reduced as much as possible.

Further, the oil adsorbing member 1 made of rice husk has excellent shape retention performance that is less likely to be broken (collapsed) against external pressure than the oil adsorbing member 1 made of rice husk charcoal that is crushed and broken easily. Therefore, volume reduction caused by carbonization can also be suppressed.

Further, when the oil adsorbing member 1 formed by mixing rice husk charcoal having a water content of 20% or less and rice husk having a water content of 20% or less is disposed on the oil that has flowed to the water surface, the above-described oil adsorption simply consisting of the rice husk charcoal described above. Similar to the member 1 and the oil adsorbing member 1 simply consisting of rice husks, it has excellent oil adsorbing performance and excellent water floating performance, and further, the merit of the oil adsorbing member 1 consisting of rice husk charcoal by mixing (Excellent oil adsorption performance, excellent water floating performance, etc.) and merits of oil adsorption member 1 made of rice husk (low cost and excellent shape retention performance (oil adsorption member 1 made of rice husk charcoal as cushion) Performance), etc.).

  Further, the oil adsorbing member 1 may be subjected to a surface activation treatment according to the use.

  That is, by treating the surface of the oil adsorbing member 1 with a small amount of a surfactant (for example, sodium alkylbenzene sulfonate), the oil adsorbing performance is further improved while the water repellency performance is reduced and the water absorbing performance is improved. The oil adsorbing member 1 also absorbs an oil film having a small mass while absorbing moisture.

  Therefore, when the oil film is removed as a finishing process for oil adsorption, it is preferable to use the one subjected to the surface activation process.

  When the above-described oil adsorbing member 1 is housed in the bag 2 to form the oil adsorbing body 3, when the oil adsorbing member 1 made entirely of rice husk charcoal is housed, when the oil adsorbing member 1 made entirely of rice husk is housed, or rice husk The oil adsorbing member 1 formed by mixing charcoal and rice husk may be stored.

  When the oil adsorbing member 1 made of all the rice husk charcoal is stored, the oil adsorbing body 3 is obtained in which the advantages of the rice husk charcoal such as excellent oil adsorbing performance and excellent water floating performance are utilized.

  Further, when the oil adsorbing member 1 composed entirely of rice husks is housed, the oil adsorbing body 3 is obtained in which the merits of rice husks such as low cost and excellent shape retention performance are utilized to the maximum.

  Further, when the oil adsorbing member 1 formed by mixing rice husk charcoal and rice husk is stored, the oil adsorbing body 3 having both the merit of rice husk charcoal and the merit of rice husk can be obtained.

  The oil adsorbing member 1 constituting the oil adsorbing body 3 is not limited to rice husk charcoal or rice husk, but may be activated carbon, synthetic fiber or natural yarn. Any one can be used as long as the function is sufficiently exhibited by the storage method described later.

  The bag body 2 is formed of a material (woven fabric or non-woven fabric) having water repellency and oil permeability as shown in FIGS. 3 to 5 and is formed in a plan view shape (225 mm × 225 mm). Note that the size and shape of the bag body 2 can be appropriately changed in design. Moreover, this bag body 2 contributes to maintaining the low water content of the oil adsorbing member 1 housed therein by having good water repellency.

  In this embodiment, as shown in FIG. 3, the end portions 2a of the four bag bodies 2 are connected in a separable manner, and the connected portions are separated using a cutting tool such as a scissors. In addition, you may comprise so that a perforation may be provided in this connection part and it can isolate | separate with the force of a hand.

  Further, as shown in FIG. 7, a locking portion 7 that can lock the connecting member 10 such as a hook, a rope, or a connecting ring may be provided at the end of the bag body 2.

  Specifically, the engaging portion 7 is an annular body formed of an appropriate synthetic resin member.

  Specifically, a locking portion 7b that is inserted into and locked to the cylindrical portion 7a is provided at the distal end portion of the wire 7A provided with the cylindrical portion 7a at the base end portion. The ring portion (eyelet) provided at the end 2a is inserted into the ring portion 7b so as to be connected in an annular shape.

  As shown in FIG. 8, the locking portion 7 connects a plurality of bag bodies 2 using a connecting member 10 such as a rope or a connecting ring when an oil fence is formed at a site where oil flows out, In addition, for example, when the oil adsorbing body 3 is arranged at a site where the oil has flowed out or when the oil adsorbing body 3 is collected from the site, it can be used as a site for locking the connecting member 10 such as a hook that is lifted.

  Further, as shown in FIG. 6, the oil adsorbent 3 according to this embodiment described above includes an appropriate oxygen scavenger 5 (for example, Ageless (registered trademark) manufactured by Mitsubishi Gas Chemical Co., Ltd.) and an appropriate desiccant 6 ( For example, it is preserved by storing Hishi beat (trade name) manufactured by AGC S-Tech Co., Ltd. in a non-ventilated container 4 and sealing it.

  Specifically, the container 4 is a bag made of an appropriate material (synthetic resin, metal, etc.) (for example, a bag made of barrier nylon / polyethylene, a bag made of polyethylene terephthalate / aluminum / polyethylene manufactured by Meiwa Packs Co., Ltd.). Yes, a predetermined amount of the oil adsorbing body 3, the oxygen scavenger 5 and the desiccant 6 are accommodated from the opening, and then the opening is sealed (heat-sealed). The container 4 is not limited to a bag but may be a box-shaped body.

  From this storage method, the function of the oxygen scavenger 5 and the desiccant 6 makes it possible to store the oil adsorbing member 1 constituting the oil adsorbing body 3 having a low water content for a long period of time (for example, moisture content due to moisture over time). The storage rate can be kept so that the rate does not exceed 20%, and when it is taken out from the container 4 at any time, it has a good function (for example, excellent oil adsorption performance obtained at a moisture content of 20% or less and excellent performance) A good storage state capable of exhibiting water floating performance) will be obtained.

  For example, when the oil adsorbing member 1 constituting the oil adsorbing body 3 is charcoal (chaff husk charcoal), it is possible to prevent spontaneous ignition during storage which is a concern.

  An oil processing operation using the oil adsorbing body 3 according to the present embodiment having the above configuration will be described.

  For example, when oil flows into a river or the ocean, the oil adsorbent 3 is taken out from the storage container 4 and used.

  Specifically, as illustrated in FIG. 8, a plurality of oil adsorbers 3 (bags 2) are connected to each other using a connecting member 10 (rope), and oil that suppresses further outflow of oil that has flowed to the water surface. Use as a fence. Since the connecting portions between the bag bodies 2 are bent, the contact area with the water surface is maintained corresponding to the shape change (waves) of the water surface, which functions well as an oil fence.

  In this case, if necessary, the oil retained by the oil fence formed by the oil adsorbing body 3 is adsorbed by arranging another oil adsorbing body 3.

  Thereafter, when the oil adsorbing body 3 that has adsorbed the oil is recovered, the oil adsorbing body 3 can be recovered using the recovery rod 11 as shown in FIG. A connecting member 10 such as a hook (not shown) is locked to a locking portion 7 provided at the end of the bag body 2 and is lifted and collected.

  Further, as another oil processing operation using the oil adsorbing body 3 according to the present embodiment, as shown in FIG. 10, the oil that has flowed into the U-shaped groove 12 by cutting the continuous portions of the bag bodies 2. Can be adsorbed, and oil such as oil leaked from various mechanical devices can be adsorbed.

  In this embodiment, oil is treated by using the oil adsorbing member 3 in which the oil adsorbing member 1 is housed in the bag 2. However, depending on the case, the oil adsorbing member 1 (rice husk having a water content of 20% or less) is used. Charcoal or rice husk) may be sprayed directly on the oil.

  As described above, in this embodiment, the oil adsorbent 3 can be maintained in a state of always exhibiting excellent oil adsorbing performance and excellent water floating performance. It will surely exhibit excellent oil adsorption performance and excellent water floating performance.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

It is an experimental result figure of the oil adsorption | suction performance and the water floating performance of the oil adsorption | suction member 1 which consists of rice husk charcoal. It is an experimental result figure of the oil adsorption | suction performance and water floating performance of the oil adsorption | suction member 1 which consists of a rice husk. It is a top view which shows the oil adsorption body which concerns on a present Example. It is a description perspective view of the principal part concerning a present Example. It is explanatory sectional drawing of the principal part which concerns on a present Example. It is explanatory drawing of the preservation | save method of the oil adsorbent which concerns on a present Example. It is a top view which shows the oil adsorption body which concerns on a present Example. It is use condition explanatory drawing of the oil adsorption body which concerns on a present Example. It is use condition explanatory drawing of the oil adsorption body which concerns on a present Example. It is use condition explanatory drawing of the oil adsorption body which concerns on a present Example.

2 Bag 3 Oil adsorber 4 Container 5 Oxygen absorber 6 Desiccant 7 Locking part
10 Connecting member

Claims (7)

An oil adsorbent storage method for adsorbing oil composed of rice husk charcoal , wherein the oil adsorbent is housed and sealed in a non-ventilated container together with an oxygen scavenger and a desiccant. How to save the body. 2. The method for preserving an oil adsorbent according to claim 1, wherein the rice husk charcoal is rice husk charcoal having a water content of 20% or less before being stored in the container. . The method for preserving an oil adsorbent according to any one of claims 1 and 2 , wherein the rice husk charcoal is surface-treated. The method for preserving an oil adsorbent according to any one of claims 1 to 3 , wherein the oil adsorbent is a bag containing the rice husk charcoal. . 5. The method for preserving an oil adsorbent according to claim 4 , wherein a bag made of a woven fabric or a non-woven fabric is adopted as the bag. The method for preserving an oil adsorbent according to any one of claims 4 and 5 , wherein a plurality of the bags are provided in series, and an end of the bag is separated from an end of another bag. An oil adsorbent storage method, wherein the oil adsorbents are arranged continuously. In the preservation method of the oil adsorption object according to any one of claims 4 to 6 , the end of the bag body is provided with the latching part which latches connection members, such as a hook, a rope, and a connection ring. An oil adsorbent storage method characterized by the above.

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