SI9200295A - Process for the non-polluting removal of petroliferous products from land or aquatic surfaces and oil-adsorbent for this procedure - Google Patents

Abstract

To combat oil spillages and for rapid uptake of the escaped oil or oleaginous substances, there serves a process in which high-temperature-blown glass wool is hydrophobised and simultaneously bound using silicone and a starch serving as binder. The glass wool treated in accordance with this is then combined to form a cuttable, mat-shaped framework and is expediently dried at 150 DEG C. The then cohering three-dimensional framework mats are applied to the contaminated water sites and are left there for complete absorption, and are then together with the absorbed oil, subjected to intermediate storage and then mechanically or thermally disposed of or reprocessed. A corresponding adsorber is composed of this fine-fibre glass wool which is prepared and configured by coating with silicone and starch in such a way that adsorption of the oil away from the water surface or the ground surface is then possible. <IMAGE>

Description

(57) To solve at i.e. In the case of accidents involving oil, especially mineral, and for the rapid uptake of oily oil or oil-like substances, we propose a process in which high-temperature blown glass wool is hydrophobized and simultaneously bonded with silicone and starch, which is used as a binder. Appropriately treated glass wool is then collected into a latticework in the form of a carpet that can be cut and dried at about 150 degrees Celsius. The continuous spatial lattice carpets are then applied to the laden water points and left there to be soaked with oil, then stored together with the oil in the middle and then safely removed or processed mechanically or thermally. A suitable adsorber is made of such fine fiberglass wool, which is pre-treated and shaped with a silicone and starch coating to allow oil to be adsorbed from the water or the earth.

Sl 9200295 A

SCHIWEK Helmut

Process for eco-friendly removal of oil and oil-like substances from the surface of water or soil and suitable oil adsorber

The invention relates to a process for preventing or eliminating water and soil contamination by oil, e.g. mineral or oil-like substances by applying hydrophobic, inorganic fibers to the affected area, accumulating risk oil on the fibers, and safely removing them by separating the fibers and oil. In addition, the invention relates to an adsorber for the uptake of oil or oil-like substances from the surface of water or soil consisting of inorganic fibers equipped with silicone as a hydrophobic agent.

With increasing oil conveyors, the environmental hazards of leaking oil are also increasing. In the wake of oil disasters in recent years, entire coastal areas have become heavily polluted and life in the sea has become completely destroyed under risky areas. Therefore, there was no shortage of attempts to extract already prominent oil from the surface of water or soil, or. It is neutralized by spraying various substances on oil or oil-like material. FR-PS 2 646 189 is known for blowing hydrophobic mineral fibers onto the water surface, whereby these fibers accumulate and absorb oil or oil-like substances, to then lift and remove the mixture. The fibers, which are supposed to be relatively short in shape, are hydrophobized with silicone oil. The amount added is 0.5 - 3%. A disadvantage of this known process is that relatively short mineral fibers like to be trapped if they cannot contact the oil early enough. Part of the inflated mineral fiber material is lost before it can become active at all. Pollution or pollution of the marine soil as well as the soil is so significant.

FR-PS 2 401 214 also teaches mineral oil uptake, with these mineral fibers pre-impregnated through a binder. This process has drawbacks that can be compared with those of the process known from FR-PS 2 646 189.

Also known from GB-PS 1 235 463 is a process whereby floating oil is said to be taken up by inorganic fibers, the fibers being pre-equipped with a water repellent material. The fibers float on the water and lead to the accumulation of oil, which is then removed from the fibers by incineration. Although simple combustion of the oil absorbed by the fibers cannot be defended from an economic point of view, it is only due to the burning of the oil that a significant environmental burden is caused. On top of this, it has been shown that the absorption capacity of inorganic fibers, which are simply dispersed or deposited on the water surface, is not sufficient for the short and reliable retrieval and intermediate storage of the required quantities of oil from the water. On top of that, the recovery of fibers that contain accumulated oil is quite expensive, with the above mentioned effect occurring, in order to submerge some of the fibers in water or not to recover for other reasons.

The invention is therefore based on the task of creating a fast and reliable operating procedure for the solution of problems in tank accidents and the like, as well as the creation of suitable adsorber oils by which the eco-friendly removal of leaking oil or oil-like substances is possible.

The task of the invention is solved by hydrophobicising and blowing the blown glass wool in a high temperature range and simultaneously binding it with silicone or starch (polysaccharides), which is used as a binder to collect properly treated glass wool before or during drying at 150 ° C in a grid formation. cut carpet and apply it continuously to the laden surface of water or earth and leave it there until completely soaked, then mostly completely soaked glass wool is lifted and stored in the interim to finally lead it to mechanical or thermal separation.

With this procedure, it is possible to apply a suitable glass wool carpet for short periods of time, even in the case of major tanker accidents or other environmental loads. many carpets of this type to absorb and bind the outstanding oil or oil-like substances and then transport them. The combined coating of the individual strands of glass wool ensures that the individual threads do not just lie lightly over one another, but form a convenient grate that can absorb more oil and other harmful substances. In addition, this grille offers the ability to actually bind the substances once so that the carpets can be recovered and stored for a long time until final treatment can begin. This finishing can be done mechanically and / or thermally, depending on whether we want glass wool or glass wool. Apply the appropriate glass wool mats again or not. Baking glass wool at about 150 ° C not only accelerates the drying effect but also causes a certain reaction of the silicone / starch mixture with the individual fibers. Starch allows for a specific combination or. bonding of the individual fibers to create the described grid, which gives the carpet the necessary stability and, on the other hand, allows for the accumulation of oil or oil-like substances. A suitable carpet is a spatial grid that, by capillary action, ensures the adsorption of oil.

In particular, a suitable grid is achieved by mixing 7 - 10% of silicone and starch with wool, so that the individual glass fibers are obtained. retain the necessary stability and, in particular, their length, so as to provide the described grate.

Sufficient adhesive effect is achieved by a mixture of silicone and starch when mixed in a 94 - 96% ratio of silicone to 6 - 4% starch and then added to glass wool. It will be shown that, depending on the subsequent drying process, a solidification occurs which leaves the grate a large surface area so that suitable amounts of oil can be adsorbed.

The invention provides that, in order to ensure, if possible, an even coating of the individual glass fibers, silicone and starch are sprayed on the fibers before or during the stacking of the fibers. fiber strands. This results in virtually every single fiber being fed to the pre-treated fiber for further processing. In addition, it is convenient to spray the fibers so that the droplets are practically impossible to form so as to allow the individual fibers to be evenly coated and properly folded. The above explains how to assemble a slit-shaped carpet grille that is then optimally suited for oil adsorption. In order to create as large an area as possible and to a certain extent also a large hollow space around individual fibers, the invention provides that the sprayed fibers are laid on top of one another and thus compacted and then baked together at about 150 ° C. This gives a slight formation which gives a convenient, well-cut grille.

In order to achieve a higher density in the raw state, it is possible to grab the fibers after being sprayed with silicone and starch and then seal together, and this forced union is already sufficient to achieve light compression.

With this type of grille, there is a larger surface area, on the one hand, and greater stability, on the other hand, when soft glass wool with a fiber diameter of 5 - 7 pcm is used as glass wool. This fine glass wool can also be stabilized so far with the described pre-treatment that the required fiber lengths are achieved and maintained, giving a completely uniform grille suitable for absorbing large quantities of oil. Surprisingly, these grids have a 1: 30 uptake capacity of one liter of soft glass wool, weighing about 30 g, binds 900 g of oil. Appropriate, oil-soaked lattice glass carpets can be removed in a variety of ways. It is possible to re-remove the oil by pyrolysis or direct annealing at about 850 ° C from latticed glass wool mats predominantly saturated with oil or similar substances. The glass is then melted and can then be conveniently used. e.g. for the construction of paths or roads, leaving absolutely no oil residue.

A further possibility is to remove oil from the predominantly saturated glass wool carpets of oil or oil-like material by centrifugation or pressing. This disposal has the disadvantage of preserving glass wool carpets in principle and reusing them. It is harmless if the oil is not eliminated 100% from the glass wool carpets, for example. only 99%. A further advantage is that the oil is then available in processed form, depending on the stage at which it was released into the environment. When centrifuging, the appropriate centrifugal force can be adjusted to take account of the strength of the fiberglass grid mats, so that they are then 100% available.

Where oil burning devices are available, the combustion of which often needs to be backed up with additional fuels, it is appropriate to direct the fiberglass grid carpets to waste incineration and remove them completely. The oil burns, leaving solid residues with solid residues of lattice glass carpets in ash, while the remaining substances are taken out together with the flue gases and taken care of together.

The expansion of the oil stain is conveniently prevented by sliding glass wool carpets into a perforated flexible hose and positioning it as a variable barrier over the water surface. Through the perforation, the oil can be applied to the lattice glass carpet so that it can be filled with it. The flexible hose itself can be made of material that does not burden the environment at all. which is not affected by any harmful substances. Glass wool carpets are slowly soaked so that a certain submergence of glass wool lattice tubes can occur, with new areas of oil rug coming into contact with and absorbing oil. The oil itself provides for natural buoyancy, so that the tube does not fully sink. If the oil layer is then removed with a further latticework of glass wool over the water surface, the hose or hose can be removed. The tubular barrier is again removed and taken care of. Also, it would be possible to expel the oil by compressing or spinning it so that the bar could then be reused. Huge reception capacity also the loaded carpet elements provide an immediate cracking of the locked oil stain, with the result that the necessary oxygen supply may occur at least in part. Eventually, the remaining oil fields in the form of islands, however, make it possible to preserve any kind of life below the water level, so that only in time this will bring environmental benefits. Alternatively, we could imagine installing this kind of oil adsorber as a permanent fixture around the drilling rigs so that any partially released oil fields are always trapped without the risk of escaping the water surface. The use of this kind of glass wool carpets in perforated flexible hoses is also appropriate because the risk of explosion is reduced or reduced by timely oil intake. completely prevent.

Adsorbei oil according to the present invention has not been in the prior art. According to documents such as FR-PS 2 646 189, which are considered to be state of the art, they merely spray hydrophobic inorganic fibers through the water without giving them a stable frame or material. a grid that can only be referred to as an oil adsorber. In order to create such an oil adsorption useful in the process of the present invention, the invention provides that the glass fibers produced in the high temperature region are coated with a mixture of silicone and starch (polysaccharides), that the fibers are combined and solidified into strands of glass wool , which can be cut, after which we adjust the length. This creates spatially shaped oil adsorbers that, depending on the dimension, i.e. thicknesses and lengths as well as depths can absorb virtually any amount of oil. In this way, the transported oil in the grate can also be stored with the capillary effect so that it will not stand out again at even the smallest loads, e.g. when lifting carpets out of the water. Of course, the binding of the oil depends on the fluid, but it can be said that the oils themselves are always bound, while gasoline and similar substances are only partially bound so that the carpets can then be re-transported, stored in the intermediate state and finally processed. It is important that the oil can be absorbed into such a way that it can accumulate on individual glass fibers with their large surfaces. This is ensured by the lattice structure provided by the invention.

The oil adsorber of the invention is particularly well suited for use in the form of barriers if the glass wool carpets are surrounded by a perforated flexible hose. As a rule, we push these lattice rugs, made of glass wool, into a hose. It is also possible to place a flexible hose made of suitable foil and with appropriate perforations around the individual glass wool lattice carpets and then weld them so that manual work can be largely avoided. Glass wool carpets perform their function as oil adsorbers also conveniently in the perforated hose, while being securely secured against impact and damage at the same time in the perforated hose.

A glass wool carpet with a density of 18 - 42 kg / m ³ has on the one hand sufficient upwelling capacity and, on the other hand, adequate stability.

The adsorption effect of a glass wool lattice mat is given in particular by the fact that, after coating, the glass fibers are lightly stacked on top of one another and subsequently baked at 150 ° C. This creates a fast and reliable latticework, respectively. a spatial lattice structure that also conveniently reliably accumulates the ingested oil. At temperatures above 150 ° C, the reaction of silicone and / or The starchy material with the fiber is accelerated and optimized so that the necessary glass fiber of small diameter can be incorporated into the latticework.

The invention is particularly distinguished by the creation of a process and an oil adsorber that can be quickly and reliably acted upon in the event of tanker accidents and other environmental threats. An oil adsorber prepared as described can be placed as a lattice glass carpet on the surface of water or soil, then automatically absorbing the oil or oil-like substance completely and then binding it so that it can then be transported together with lattice glass carpet. The glass wool carpet is then removed so that it can either be stored environmentally or reused. The speed with which glass wool carpets absorb oil or oil-like products is amazing, and then retains them so securely that it can be safely removed from compromised reports, and then continued or completed safely.

Further details and advantages of the object of the invention derive from the following description of the accompanying drawing, which shows a preferred embodiment with associated details and elements.

In doing so, they show:

FIG. 1 schematic view of a fiberglass machine,

FIG. 2 single glass fiber in section,

FIG. 3 shows the degree of authorization of the process scheme according to FIG. 1 in

FIG. 4 glass wool grid rug embedded in flexible hose.

FIG. 1 shows first a glass melt (1) which is heated appropriately. The glass stream (2) enters the area of the burners (3), where the rotating basket (4) with the spinning part (5) ensures proper formation of the fibers. Induction heating is indicated by (7).

Individual glass fibers (9, 10) leave the spinning section (5) and are available for further processing as glass wool strands (18).

This further processing of fiberglass (9, 10) or. the glass wool strands (18) are sprayed with silicone and starch, the material being fed through the inlet tubes (12, 13) already in a mixed state, then trapped through an air nozzle (14) and then sprayed on the glass fibers (9, 10). The inlet pipes (12, 13) are connected via a mixing vessel (16) to a silicone container (14) and a starch container (15).

While the hot air inlet (6) acts on the flow (2) of the hot air glass, normal air can be guided through the air nozzle (17).

FIG. 2 shows a single glass fiber (9, 10) equipped with silicone and starch coating (19). For clarity, the coating (19) shown here is disproportionately large.

In FIG. 1 shows that the strands (18, 18 &apos;) are guided from one another to the other, while stacking them according to FIG. 3 both strands (18, 18 ') of glass wool are easily folded, which is sufficient to stabilize the fibers and the resulting lattice formation with a suitable bonding effect. This bonding takes place in the process of the invention by feeding starch, while the silicone is to hydrophobize individual glass fibers (9,10).

In carrying out the invention, it is apparent from FIG. 3, the drying process is carried out at about 150 ° C by heating with a furnace (20). Alternatively, the emerging lattice carpet (21) of glass wool is optimally optimized with heat.

FIG. 4 shows a section of a flexible tube (22) in which lattice mats (21) of glass wool are located. The flexible hose (22) is provided with a number of openings distributed along the length and circumference to allow oil or oil-like substances to pass through the flexible hose (22), in which case the glass wool carpets (21) can develop their full adsorption effect.

While, according to the above illustration, the adsorption agent and the binder are only fed in one place, it is of course also possible for further mixing sites (24,

25) either spray silicone or starch, or a mixture thereof, on glass wool strands (18), by applying a second spray in the area of the inlet pipes (12, 13) to each glass wool lattice mat and the last coating.

All of the above characteristics, including those that are only apparent from the drawing, are considered alone or in combination as essential to the invention.

VRBLJA

Claims (15)

1. A process for the eco-friendly removal of oil and oil-like substances from the surface of water or soil by applying hydrophobic, inorganic fibers to the endangered area, the accumulation of high-risk oil, in particular mineral oil, on fibers, and the safe removal of fiber and oil by decomposition, in the high-temperature range, the blown glass wool is hydrophobized and simultaneously bonded with silicone and starch (polysaccharides), which is used as a binder at the same time to collect properly treated glass wool before or during drying at 150 ° C in a slit carpet formation , and apply it continuously to the laden surface of water or soil and leave it there until completely soaked, and then the mostly soaked glass wool is picked up and stored in the interim, then guided into mechanical or thermal separation. Process according to claim 1, characterized in that 7 to 10% of silicone and starch are mixed with glass wool. Process according to claim 1, characterized in that the silicone and the starch are mixed in a ratio of 94 to 96% silicone to 6 to 4% starch and then mixed together with glass wool. Method according to Claims 1 and 2, characterized in that the silicone and the starch are sprayed on the fibers before or during the stacking of the fibers. strands of fibers. Process according to Claims 1 and 4, characterized in that the sprayed fibers are folded and compacted and then baked at about 150 ° C. Method according to claim 1, characterized in that the fibers, after being sprayed with silicone and starch, are forcibly combined and then baked together. Method according to claim 1, characterized in that a soft glass wool with a fiber diameter of 5 to 7 μπι is used as glass wool. Method according to claim 1, characterized in that the oil or oil-like substances of the predominantly saturated glass wool carpet are pyrolyzed or directly annealed at 850 ° C at 850 ° C. Method according to claim 1, characterized in that the oil or oil-like substances are substantially saturated glass wool carpets by oil-centrifugation or compression. A method according to claim 1, characterized in that the glass wool carpets are run into a waste incineration plant. Method according to claim 1, characterized in that the glass wool mats are pushed into a perforated flexible tube and placed as a variable closure on the surface of the water. 12. An oil adsorber for the extraction of oil, in particular mineral, or oil-like substances from the surface of water or soil consisting of inorganic fibers equipped with silicone as a hydrophobic agent, characterized in that glass fibers are produced in the high temperature range (9, 10) coated with a mixture (19) of silicone and starch (polysaccharides), so that the fibers are assembled into strands (18) of glass wool in the form of a carpet that can be cut, then hardened and then adjusted in length. 13. An oil adsorber according to claim 12, characterized in that the lattice mats (21) of glass wool are surrounded by a perforated flexible hose (22). Adsorber oils according to claim 12, characterized in that the lattice mats (21) of glass wool have a volume density of 18 to 42 kg / m ³ . Adsorber oils according to claim 12, characterized in that the glass fibers (9,10) are lightly stacked one above the other after coating and then baked together at 150 ° C. ZaSCHIWEK Helmut: AVRELUA 586-P / AG / ep SCHIWEK Helmut Our sign: 586-P / AG / ep SCHIWEK Helmut Our sign: 586-P / AG / ep