Sorbent material for removal of the oil pollution

 

(57) Abstract:

The invention relates to sorbent materials for the removal of the oil pollution. The material includes two outer fibrous layers, each of which is pre-bonded hypoproteinemia, and an intermediate layer of synthetic fibers between the outer layers. All layers are bonded together by hypoproteinemia. While the outer layers are made of polypropylene, and an intermediate layer of polypropylene or polyester fibers, and the outer fibrous layers are made thicker than the intermediate fibrous layer. The technical result of the invention is the possibility of holding oil and reusable material. 3 C.p. f-crystals, 1 Il.

The technical field to which the invention relates.

The invention relates to materials for liquidation of emergency floods of oil and mineral oil on the surface of the water and the land. The preferred materials for cleaning and removal of oily liquids, when not effectively end the use of heavy equipment or in combination with last for purification of surfaces. The materials can be used as a preventive transport, pipelines of any company whose activities are connected with the use of oily liquids).

Art

Known sorbent material, described in U.S. patent N 4340486 on CL 210-693, publ. on 3 July 1982 and N 3607741 on CL 210-36, publ. September 4, 1971, consisting of cellulose fibers, enclosed in a net, to absorb oil stains from the surface of the water.

Famous U.S. patent N 4006079 on CL 210-39, publ. February 2, 1977, protecting materials from glass fibers, enclosed in a net, for absorbing ability.

With good sorption properties of these materials have low strength and lack buoyancy.

Known sorting non-woven material, as described in the application EPO N 0287264 in class. D 04 H 1/46, published. 88.10.19. According to this application proposed a material consisting of two layers of short cotton fibers and an intermediate non-woven fabric of synthetic fibers between the layers.

The intermediate non-woven material is a material obtained from a melt of the polymer. All three layers are connected by hypoproteinemia.

To remove oil from contaminated surface of such a Mat is spread stalkivalsa properties provides processing Mata special chemicals.

The disadvantage of this material is the use of short fibers that can be separated during operation of the Mat, contaminating the collected liquid.

In its essence and the achieved result, the specified non-woven material closest to the invention and taken as a prototype.

The invention

The main objective of the invention is to create a material with the necessary combination of sorption properties, the ability to hold the collected oil, buoyancy, ease of extraction and the extraction of the collected oil from reusing material. This problem is solved due to the fact that the material comprising two outer fibrous layers, each of which is pre-bonded hypoproteinemia, and an intermediate fibrous layer of synthetic fibers located between the said outer layers, bonded together by hypoproteinemia, outer fibrous layers are made of polypropylene, and an intermediate layer of polypropylene or polyester fibers, and fibrous layers are made thicker than the intermediate fibrous layer. The linear density of the fibers of the outer S="ptx2">

The holding capacity of the material can be further increased due to the fact that the intermediate layer is made of coarser fibers than fibers of the outer layers.

Another object of the invention is the creation of material, which, along with sufficient sorption and retention properties in respect of petroleum products would have increased resistance to flow through the collected oil in the terms of use of the material as a preventive means to prevent the ingress of oil to the surface of contact with the material. This problem is solved due to the fact that the surface of the material with one or both outer sides processed by calendering.

List of figures

The figure schematically presents a cross section of the sorption material according to the invention.

Information confirming the possibility of carrying out the invention.

As shown in the drawing, the material according to the invention includes two outer layers 1 made of polypropylene fibers, pre-bonded beams 3 fibers by hypoproteinemia, and the intermediate layer 2 between them from polypro is. Due to this structure, the material of the outer fibrous layers 1 is made thicker than the intermediate layer.

When using cloth made of such material is placed on a spot of oil or oil on the surface of water or land in such a way that the surface layer 1 comes into contact with the contamination, which is sucked inside the open pores of the layer 1, and fills them, moving to the layer 2, is distributed throughout the volume.

Since layer 1, compacted due to the impact of bundles of fibers 3 and 4, has a less developed total surface is then compared to layer 2 that is handled by the impact beam 4, the pollution getting into layer 2 and extending in the volume with a larger total surface area of pores, kept them within the required time. Then the cloth is removed from the contaminated surface and pressed to extract the collected oil.

Depending on the rheological properties of sorbed oil outer fibrous layers 1 made of polypropylene, and the intermediate fibrous layer 2 is made of polypropylene or polyester fibers with a linear density of 0.1 to 0.68 Tex, preferably of 0.17-0.68 techno linear density, same with the linear density of the fibers of the intermediate layer.

In the collection of the middle fraction oil is preferable application of the intermediate layer 2 made of fibers with a higher linear density in relation to the fibers of the outer layers 1.

In this case, increasing the retention effect of the collected oil as difficult to reverse the movement of contamination from the layer 2 with a large pore diameter of the layer 1 with a smaller diameter inner pores.

During the renovations, the distribution of fuel and so on, the bed of such material is placed on the protected from contact with the oil surface otsilindrovannoy outer side of one of the layers 1 and the outer surface of the other layer 1 is up. Pollution, falling on the surface of the processed or unprocessed layer 1, pre-bonded hypoproteinemia due to the beams 3, flows into it and moves to the layer 2, divided by the entire volume of the layers 1 or 2, fastened together by hypoproteinemia through bundles of fibers 4, and accumulating at the surface layer 1 is subjected to processing calendered. Because by calendering a significant portion or all of the pores of the outer layer 1 is closed, he mill is provided with the movement of heavy objects on the surface of the litter, it is preferable to apply the Mat of material, in which both outer surfaces of the material processed by calendering. This facilitates, on the one hand, the strengthening of the material and on the other hand, an increase in its resistance to fracture under the action of friction forces in the contact zone.

So, for example, to collect spill middle fraction oil (waste oil) takes the napkin from the material in which layers 1 formed of polypropylene fibers of 0.1-0.29 Tex., pre-bonded hypoproteinemia beams 3 fibers, and the intermediate layer 2 is made of polypropylene fibers 0,68 Tex. all layers are bonded together by hypoproteinemia beams 4 fibers.

To collect spills of light fractions of petroleum products (gasoline) takes the napkin from the material in which layers 1 formed of polypropylene fibers of 0.1-0.29 Tex., pre-bonded hypoproteinemia fascicles of 3, and an intermediate layer of polypropylene fibers of 0.1-0.29 Tex. and all the layers are bonded together by hypoproteinemia the fiber bundles 4.

To collect spills of heavy oil fractions (oil) is taken napkin from a material in which layers 1 formed of polypropylene palaeoeconomy fibers 0,68 Tex., all layers are bonded together by hypoproteinemia the fiber bundles 4.

Extracting oil is easily accomplished by any mechanical means, in particular by pressing the sting shaft. This wipes out such material can be used multiple times.

Perhaps the use of polypropylene fibers with a linear density of less than 0.1 Tex. and more 0,68 Tex. However, in the first case, the difficult process of fibers on the carding and haloperidolum equipment, and the second is sharply reduced holding capacity of the material in relation to petroleum and petroleum products.

The term "fibrous layer" means a layer formed of loosely arranged fibers using known mechanical hollowbrook devices. The formation and bonding of these layers hypoproteinemia is carried out in a single process on a known needle units type AYIN or AIL (e.g. M. D. Perepelkina and other "Mechanical technology for the production of nonwovens" M "Light industry", 1973, S. 431-433), etc. equipment.

1. Sorbent material for removal of the oil pollution, including two outer fibrous layers, each of the fibers, located between these outer layers, bonded together by hypoproteinemia, characterized in that the outer layers are made of polypropylene, and an intermediate layer of polypropylene or polyester fibers, and the outer fibrous layers are made thicker than the intermediate fibrous layer.

2. Sorbent material under item 1, characterized in that the linear density of the fibers of the outer layers of the same material with a linear density of the fibers of the intermediate layer.

3. Sorbent material under item 1, characterized in that the intermediate layer is made of coarser fibers than fibers of the outer layers.

4. Sorbing material on PP.1 and 2, characterized in that its surface on one or both outer sides processed by calendering.

 

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