WO1988006141A1 - Article for pollution control and process for absorbing pollutants - Google Patents

Article for pollution control and process for absorbing pollutants Download PDF

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Publication number
WO1988006141A1
WO1988006141A1 PCT/FR1988/000089 FR8800089W WO8806141A1 WO 1988006141 A1 WO1988006141 A1 WO 1988006141A1 FR 8800089 W FR8800089 W FR 8800089W WO 8806141 A1 WO8806141 A1 WO 8806141A1
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WO
WIPO (PCT)
Prior art keywords
cover
polymer
article according
fine mesh
article
Prior art date
Application number
PCT/FR1988/000089
Other languages
French (fr)
Inventor
Claude Stein
Original Assignee
Norsolor
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norsolor filed Critical Norsolor
Publication of WO1988006141A1 publication Critical patent/WO1988006141A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • C02F1/681—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of solid materials for removing an oily layer on water

Definitions

  • the present invention relates to the field of depollution of liquid or solid surfaces.
  • Patent FR-A-2,288,709 also describes a process for removing and recovering petroleum products, in particular hydrocarbons, spread on a liquid or solid surface by contacting, with said petroleum product, a finely divided polymer capable of producing with the petroleum product a film having sufficient strength to be able to be towed, then removal of said film by mechanical means.
  • a preferred polymer for carrying out this process is a polymer of bicyclo (2.2.1) heptene-2 or of its methyl derivative, these polymers forming with petroleum hydrocarbons a coherent film which may contain up to 10 parts by weight of petroleum products for a part of polymer.
  • the contacting of the polymer with the petroleum product is effected, according to this known process, by simple dusting of the polymer on the surface of said product.
  • a first object of the present invention therefore consists of a depollution article comprising a powdered polymer of bicyclo (2.2.1) heptene-2 or of its methyl derivative, characterized in that it comprises at least one cover in fine mesh fabric at least partially filled with said polymer.
  • the cover forming part of the pollution-control article according to the invention can be made of any textile material, woven or non-woven, chosen in particular from synthetic materials such as nylon, polyester, polypropylene, viscose or their mixtures or even among natural materials such as cotton. It can also be made of an extensible textile material. Said cover can be of any shape such as for example a cushion, sausage shape or any other. It can have various dimensions adapted to the intended application and chosen in particular between 3 centimeters and 10 meters approximately, without these quantified values being of a limiting nature. In order to prevent the polymer contained in the cover from escaping, it is obviously important as long as the sides and / or the ends of the cover are closed by any closure means, for example that they are sewn, knotted or strapped after filling of said polymer.
  • the useful sand cover according to the present invention may also comprise, preferably fixed to at least one of its ends, at least one gripping means such as a fastener or a knot allowing it to be pulled or towed by usual mechanical means. .
  • the textile cover forming part of the pollution-control article according to the invention has a fine mesh allowing the liquid polluting product (petroleum, oil, light hydro-carbide or other) to enter the cover. and come into contact with the powdered polymer.
  • the mesh of the textile cover must have a dimension less than the dimension of almost all (preferably at least 95%) of the particles of the powdered polymer.
  • the fine mesh textile cover must be at least partially filled with bicyclic powder polymer. (2.2.1) heptene-2 or its methyl derivative.
  • partial filling is meant that the cover should not necessarily be filled with the maximum quantity of polymer that its geometric shape could theoretically allow, this in order to provide a residual volume available for the polluting products to be absorbed by the polymer powder and to avoid the risk of rupture of the closure system of the cover, such as sewing or other.
  • the powdered polymer will fill from 20% to 80% approximately of the theoretical volume of the cover.
  • the polymer contained in the cover is in the form of a finely divided powder with an apparent density of between 0.25 and 0.45 approximately and a particle size of between 0.01 and 2 mm approximately.
  • a powdered polymer constituted by the refusal of sieving on a sieve whose mesh corresponds at least to the size of the interstices of the textile constituting the cover, in order to avoid losses of polymer powder through the textile.
  • the powdered polymers of bicyclo (2.2.1) heptene-2 or of its methyl derivative are well known and can be added, during their manufacture, fillers playing a role called anti-caking agents, such as silica, talc, calcium, sodium or zinc stearates.
  • the material capable of absorbing liquid pollutants and filling the cover may consist of a mixture of bicyclo powder polymer (2.2.1 ) heptene-2 and at least one other absorbent of pollutants, the proportion of this other absorbent in the mixture being at most equal to 90% by weight, preferably at most equal to 40% by weight and more particularly at most equal to around 20% by weight.
  • absorbent agents of polishing agents which can be used in the context of this variant of the present invention, mention may in particular be made of organic agents such as polymer residues based on propylene or styrene and plant agents such than peanut husk or grain waste.
  • a second object of the present invention consists of a method for absorbing liquid pollutants, characterized in that at least one textile cover with * fine mesh filled at least partially with a polymer is placed on the surface of said liquid.
  • bicyclo powder 2.2.1) heptene-2 or its methyl derivative.
  • the method according to the invention therefore consists in using the pollution control article described above to absorb a liquid pollutant. It is particularly applicable on a liquid surface such as that of a sea, a lake or a watercourse when pollutants have been improperly there- 4 treuseme ⁇ t spills. It is also applicable on a solid surface, such as a floor on which a machine (for example lathe or milling machine) lets oil leak. This process is more particularly applicable to the case where the polluting product is a petroleum product, in particular a hydrocarbon.
  • the number of covers to be used must be adapted according to the exact nature of the petroleum hydrocarbons spilled on the polluted surface.
  • the absorption capacity of the bicyclo powder polymer (2.2.1) heptene-2 or of its ethylene derivative varies greatly from one fraction of hydrocarbons to another: while it generally reaches order of 1 to 10 parts by weight of hydrocarbon per 1 part of polymer in the case of heavy hydrocarbons, as mentioned by the patent FR-A-2,288,709 cited above, it has surprisingly been discovered that it can reach up to 40 parts by weight of hydrocarbons per 1 part by weight of polymer in the case of transformers oils and lighter hydrocarbons such as domestic fuel, benzene, toluene and xylene.
  • the number of textile covers placed on the polished surface, when the polluting product is a petroleum product is therefore chosen in such a way that the quantity of powdered polymer contained in the assembly covers is between 1/40 and 1 times the quantity of polluting product to be absorbed.
  • the time required for the absorption of polluting products by the powdered polymer contained in the textile cover depends on the one hand on the chemical nature of said polluting products, on the other hand on their distribution mode, compact or dispersed, over the polluted surface. In the case of petroleum products, this time depends on whether it is heavy or light hydrocarbons. In the case of the latter, this time is generally between half an hour and a few hours.
  • a polybicyclo (2.2.1) heptene-2 sold by the applicant under the brand N0RS0REX is sieved through a 0.32 mm mesh sieve.
  • the rejection of sieves, with a particle size between 0.32 and 2 mm, is added by 1% zinc stearate as an anti-slip agent.
  • 200 g of this mixture, of 0.45 bulk density, are introduced into a nylon cover woven with 0.15 mm mesh, 1 meter long and 6 cm in diameter, and the two ends of which are closed. by means of metal rings.
  • Example 1 The cover of Example 1 is placed in a retention tank containing 2.5 kg of domestic fuel oil.
  • the fuel oil is gradually absorbed by the contents of the cover. 90 minutes after contacting, all the fuel oil has migrated and is trapped by the cover. The bottom of the retention tank is almost completely dry. The cover and its contents can be removed without risk of exudation or leakage. The same observation can be made when the same quantity of domestic fuel oil is spilled on the surface of a tank containing water.
  • EXAMPLE 3 The cover of Example 1 is placed in a retention tank containing 2.5 kg of toluene. After 2 hours, the toluene is completely absorbed and transformed into a consistent, non-exuding gel, inside the swollen cover. The same applies when the same amount of toluene is spilled on the surface of a container containing water.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Removal Of Floating Material (AREA)

Abstract

Article for pollution control comprising a powder polymer of bicyclo (2.2.1) heptene-2 or of its methylated derivative. It comprises at least on fine-mesh textile cover at least partially filled with the said polymer. Application to the absorption of liquid pollutants, in particular petroleum hydrocarbons.

Description

ARTICLE DE DEPOLLUTION ET PROCEDE POUR ABSORBER DES PRODUITS POLLUANTS. DEPOLLUTION ARTICLE AND METHOD FOR ABSORBING POLLUTANT PRODUCTS.
La présente invention se rapporte au domaine de la dëpollution de surfaces liquides ou solides.The present invention relates to the field of depollution of liquid or solid surfaces.
On connaît déjà, notamment par les brevets US-A-4.366.067, FR-A- 2.090.452 et EP-A-0.027.359, des articles destinés à éliminer du pétrole et/ou des huiles présents à la surface d'un liquide, comprenant un emballage ou sac en tissu ou autre matériau rempli de plumes d'oiseaux, de perlite expansée ou encore de mousse de polyisocyanurate à cellules fermées. L'ab¬ sorption de pétrole et/ou d'huiles par ces produits s'avère toutefois nette- ment insuffisante.Are already known, in particular from patents US-A-4,366,067, FR-A-2,090,452 and EP-A-0,027,359, articles intended for removing petroleum and / or oils present on the surface of a liquid, comprising a fabric or other packaging or bag filled with bird feathers, expanded perlite or even closed cell polyisocyanurate foam. However, the absorption of petroleum and / or oils by these products is clearly insufficient.
Le brevet FR-A-2.288.709 décrit par ailleurs un procédé d'enlève¬ ment et de récupération de produits pétroliers, notamment d'hydrocarbures, répandus sur une surface liquide ou solide par mise en contact, avec ledit produit pétrolier, d'un polymère finement divisé capable de produire avec le produit pétrolier une pellicule possédant une résistance suffisante pour pouvoir être tractée, puis enlèvement de ladite pellicule par des moyens mécaniques. Un polymère préféré pour la mise en oeuvre de ce procédé est un polymère du bicyclo(2.2.1)heptène-2 ou de son dérivé méthylê, ces polymères formant avec les hydrocarbures pétroliers une pellicule cohérente pouvant contenir jusqu'à 10 parties en poids de produits pétroliers pour une partie de polymère. La mise en contact du polymère avec le produit pétrolier s'ef¬ fectue, selon ce procédé connu, par simple saupoudrage du polymère à la sur¬ face dudit produit. Il a toutefois été constaté que l'emploi de ces polymè¬ res par saupoudrage sur les nappes de produits pétroliers présente l'incon- vénient, dans les conditions météorologiques difficiles qui prévalent sou¬ vent durant les opérations de dépoli uti on d'urgence et notamment par temps de vent, de conduire à l'entraînement d'une partie importante de la poudre de polymère en dehors de l'aire polluée visée et, par conséquent, de dimi¬ nuer l'efficacité de l' opération. Par ailleurs dans certains cas, notamment celui des huiles de transformateurs et celui d'hydrocarbures légers tels que fuel domestique, solvants, benzène, toluène et xylènes, le pouvoir absorbant du polymère peut atteindre 15 et même 40 parties en poids d'hydrocarbure pour 1 partie de polymère, tout en conduisant à des absorbats secs, dépourvus de toute exsu- dation ultérieure de l'hydrocarbure même sous une pression de 3 à 70 bars. De tels absorbats n'ont cependant plus une cohésion suffisante pour pouvoir être enlevés sous forme de pellicule tractable. Il s'agit plutôt de masses semi -agglomérées se présentant sous une forme de gélatine difficile à ramas ser et/ou à évacuer.Patent FR-A-2,288,709 also describes a process for removing and recovering petroleum products, in particular hydrocarbons, spread on a liquid or solid surface by contacting, with said petroleum product, a finely divided polymer capable of producing with the petroleum product a film having sufficient strength to be able to be towed, then removal of said film by mechanical means. A preferred polymer for carrying out this process is a polymer of bicyclo (2.2.1) heptene-2 or of its methyl derivative, these polymers forming with petroleum hydrocarbons a coherent film which may contain up to 10 parts by weight of petroleum products for a part of polymer. The contacting of the polymer with the petroleum product is effected, according to this known process, by simple dusting of the polymer on the surface of said product. However, it has been observed that the use of these polymers by dusting on the slicks of petroleum products has the drawback, in the difficult meteorological conditions which prevail often during emergency frosting operations and in particular in windy weather, lead to the entrainment of a large part of the polymer powder outside the targeted polluted area and, consequently, to decrease the efficiency of the operation. Furthermore, in certain cases, in particular that of transformer oils and that of light hydrocarbons such as household fuel, solvents, benzene, toluene and xylenes, the absorbency of the polymer can reach 15 and even 40 parts by weight of hydrocarbon per 1 part of polymer, while leading to dry absorbates, free from any subsequent exudation of the hydrocarbon even under a pressure of 3 to 70 bars. However, such absorbents no longer have sufficient cohesion to be able to be removed in the form of towable film. Rather, they are semi-agglomerated masses in the form of a gelatin which is difficult to collect. serve and / or dispose of.
La demanderesse a trouvé que les problèmes évoqués c -dessus, liés à l'ëpandage de polymère en poudre par temps de vent ou bien liés à la structure de certains absorbats peuvent être judicieusement surmontés, grâce à la présente invention, en enfermant la poudre de polymère dans une housse en textile S maille fine dont les extrémités sont fermées après introduction du polymère.The Applicant has found that the problems mentioned above, linked to the spreading of powdered polymer in windy weather or else linked to the structure of certain absorbates can be judiciously overcome, by virtue of the present invention, by enclosing the powder of polymer in a fine mesh S textile cover, the ends of which are closed after the polymer has been introduced.
Un premier objet de la présente invention consiste donc en un ar¬ ticle de dépollution comprenant un polymère en poudre de bicyclo(2.2.1) hep- tène-2 ou de son dérivé méthylë, caractérisé en ce qu'il comprend au moins une housse en textile à maille fine remplie au moins partiellement dudit polymère.A first object of the present invention therefore consists of a depollution article comprising a powdered polymer of bicyclo (2.2.1) heptene-2 or of its methyl derivative, characterized in that it comprises at least one cover in fine mesh fabric at least partially filled with said polymer.
La housse faisant partie de l'article de dëpollution selon l'in¬ vention peut être réal sée en un matériau textile quelconque, tissé ou non- tissé, choisi notamment parmi les matériaux synthétiques tels que nylon, po¬ lyester, polypropylène, viscose ou leurs mélanges ou encore parmi les maté¬ riaux naturels tels que le coton. Elle peut également être réalisée en un matériau textile extensible. Ladite housse peut être de forme quelconque telle que par exemple une forme de coussin, de boudin ou toute autre. Elle peut avoir des dimensions diverses adaptées à l'application visée et choi¬ sies notamment entre 3 centimètres et 10 mètres environ, sans que ces va¬ leurs chiffrées présentent un caractère limitatif. Afin d'éviter que le polymère contenu dans la housse puisse s'échapper, il est évidemment impor¬ tant que les côtés et/ou les extrémités de la housse soient obturés par un moyen de fermeture quelconque, par exemple qu'ils soient cousus, noués ou cerclés après remplissage dudit polymère.The cover forming part of the pollution-control article according to the invention can be made of any textile material, woven or non-woven, chosen in particular from synthetic materials such as nylon, polyester, polypropylene, viscose or their mixtures or even among natural materials such as cotton. It can also be made of an extensible textile material. Said cover can be of any shape such as for example a cushion, sausage shape or any other. It can have various dimensions adapted to the intended application and chosen in particular between 3 centimeters and 10 meters approximately, without these quantified values being of a limiting nature. In order to prevent the polymer contained in the cover from escaping, it is obviously important as long as the sides and / or the ends of the cover are closed by any closure means, for example that they are sewn, knotted or strapped after filling of said polymer.
La housse util sable selon la présente invention pourra également comporter, fixé de préférence à au moins Tune de ses extrémités, au moins un moyen de préhension tel qu'une attache ou un noeud permettant de la tirer ou de la tracter par des moyens mécaniques habituels.The useful sand cover according to the present invention may also comprise, preferably fixed to at least one of its ends, at least one gripping means such as a fastener or a knot allowing it to be pulled or towed by usual mechanical means. .
Par ailleurs il est également important que la housse en textile faisant partie de l'article de dëpollution selon l'invention possède une maille fine permettant au produit polluant liquide (pétrole, huile, hydro¬ carbure léger ou autre) d'entrer dans la housse et de venir au contact du polymère en poudre. On entend par 11 que la maille de la housse textile doit avoir une dimension inférieure à la dimension de la quasi -totalité (de pré¬ férence au moins 95 %) des particules du polymère en poudre.Furthermore, it is also important that the textile cover forming part of the pollution-control article according to the invention has a fine mesh allowing the liquid polluting product (petroleum, oil, light hydro-carbide or other) to enter the cover. and come into contact with the powdered polymer. By 11 is meant that the mesh of the textile cover must have a dimension less than the dimension of almost all (preferably at least 95%) of the particles of the powdered polymer.
Selon la présente invention, la housse en textile à maille fine doit être remplie au moins partiellement de polymère en poudre de bicyclo- (2.2.1)heptène-2 ou de son dérivé mêthylë. Par remplissage partiel on entend que la housse ne doit pas nécessai ement être remplie de la quantité maxima¬ le de polymère que sa forme géométrique pourrait théoriquement autoriser, ceci afin de ménager un volume résiduel disponible pour les produits pollu- ants devant être absorbes par le polymère en poudre et afin d'éviter les risques de rupture du système de fermeture de la housse, tel que couture ou autre. De préférence le polymère en poudre remplira de 20% à 80% environ du volume théorique de la housse. Le polymère contenu dans la housse se présen¬ te sous forme de poudre finement divisée de densité apparente comprise entre 0,25 et 0,45 environ et de dimension de particules comprise entre 0,01 et 2 mm environ. De préférence on utilisera un polymère en poudre constitué par le refus de tamisage sur un tamis dont la maille correspond au minimum à la dimension des interstices du textile constituant la housse, afin d'éviter les pertes de poudre de polymère au travers du textile. Les polymères en poudre du bicyclo(2.2.1)heptêne-2 ou de son dérivé mëthylé sont bien connus et peuvent être additionnés, au cours de leur fabrication, de charges jouant un rôle dit d'agents anti-mottants, telles que silice, talc, stéarates de calcium, de sodium ou de zinc.According to the present invention, the fine mesh textile cover must be at least partially filled with bicyclic powder polymer. (2.2.1) heptene-2 or its methyl derivative. By partial filling is meant that the cover should not necessarily be filled with the maximum quantity of polymer that its geometric shape could theoretically allow, this in order to provide a residual volume available for the polluting products to be absorbed by the polymer powder and to avoid the risk of rupture of the closure system of the cover, such as sewing or other. Preferably the powdered polymer will fill from 20% to 80% approximately of the theoretical volume of the cover. The polymer contained in the cover is in the form of a finely divided powder with an apparent density of between 0.25 and 0.45 approximately and a particle size of between 0.01 and 2 mm approximately. Preferably, use will be made of a powdered polymer constituted by the refusal of sieving on a sieve whose mesh corresponds at least to the size of the interstices of the textile constituting the cover, in order to avoid losses of polymer powder through the textile. The powdered polymers of bicyclo (2.2.1) heptene-2 or of its methyl derivative are well known and can be added, during their manufacture, fillers playing a role called anti-caking agents, such as silica, talc, calcium, sodium or zinc stearates.
Par remplissage partiel de la housse on entend, selon une variante de réalisation de la présente invention, que la matière capable d'absorber des polluants liquides et remplissant la housse peut être constituée d'un mélange de polymère en poudre de bicyclo(2.2.1)heptène-2 et d'au moins un autre agent absorbant de produits polluants, la proportion de cet autre agent absorbant dans.le mélange étant au plus égale à 90% en poids, de prë- férence au plus égale à 40% en poids et plus particulièrement au plus égale à 20% en poids environ. Parmi les autres agents absorbants de produits pol¬ luants util sables dans le cadre de cette variante de la présente invention, on peut citer notamment des agents organiques tels que des résidus de poly¬ mères à base de propylène ou de styrène et des agents végétaux tels que des déchets de cosse d'arachide ou de céréales.By partial filling of the cover is meant, according to an alternative embodiment of the present invention, that the material capable of absorbing liquid pollutants and filling the cover may consist of a mixture of bicyclo powder polymer (2.2.1 ) heptene-2 and at least one other absorbent of pollutants, the proportion of this other absorbent in the mixture being at most equal to 90% by weight, preferably at most equal to 40% by weight and more particularly at most equal to around 20% by weight. Among the other absorbent agents of polishing agents which can be used in the context of this variant of the present invention, mention may in particular be made of organic agents such as polymer residues based on propylene or styrene and plant agents such than peanut husk or grain waste.
Un second objet de la présente invention consiste en un procédé pour absorber des produits polluants liquides, caractérisé en ce qu'on dis¬ pose à la surface dudit liquide au moins une housse en textile à* maille fine remplie au moins partiellement d'un polymère en poudre de bicyclo(2.2.1)hep- tène-2 ou de son dérivé mëthylé.A second object of the present invention consists of a method for absorbing liquid pollutants, characterized in that at least one textile cover with * fine mesh filled at least partially with a polymer is placed on the surface of said liquid. bicyclo powder (2.2.1) heptene-2 or its methyl derivative.
Le procédé selon l'invention consiste donc à utiliser l'article de dëpollution décrit précédemment pour absorber un polluant liquide. Il est notamment applicable sur une surface liquide telle que celle d'une mer, d'un lac ou d'un cours d'eau lorsque des produits polluants y ont été malencon- 4 treusemeπt déverses. Il est également applicable sur une surface solide, telle qu'un sol sur lequel une machine (par exemple tour ou fraiseuse) laisse fuir de l'huile. Ce procède est plus particulièrement applicable au cas où le produit polluant est un produit pétrolier, notamment un hydrocar- bure. Pour la mise en oeuvre du procédé selon l'invention, le nombre de housses a utiliser devra être adapté en fonction de la nature exacte des hydrocarbures pétroliers répandus sur la surface polluée. En effet la capa¬ cité d'absorption du polymère en poudre de bicyclo(2.2.1)heptène-2 ou de son dérivé éthylë varie fortement d'une fraction d'hydrocarbures à une autre: alors qu'elle atteint généralement de l'ordre de 1 à 10 parties en poids d' hydrocarbure pour 1 partie de polymère dans le cas des hydrocarbures lourds, comme mentionné par le brevet FR-A-2.288.709 cité précédemment, on a décou¬ vert de manière surprenante qu'elle peut atteindre jusqu'à 40 parties en poids d'hydrocarbures pour 1 partie en poids de polymère dans le cas d'hui- les de transformateurs et d'hydrocarbures plus légers tels que fuel domesti¬ que, benzène, toluène et xylène. Selon un mode de réalisation du procédé selon l'invention, le nombre de housses textiles disposées sur la surface polîuëe, lorsque le produit polluant est un produit pétrolier, est donc choisi de telle manière que la quantité de polymère en poudre contenu dans l'ensemble des housses soit compris entre 1/40 et 1 fois la quantité de pro¬ duit polluant à absorber.The method according to the invention therefore consists in using the pollution control article described above to absorb a liquid pollutant. It is particularly applicable on a liquid surface such as that of a sea, a lake or a watercourse when pollutants have been improperly there- 4 treusemeπt spills. It is also applicable on a solid surface, such as a floor on which a machine (for example lathe or milling machine) lets oil leak. This process is more particularly applicable to the case where the polluting product is a petroleum product, in particular a hydrocarbon. For the implementation of the method according to the invention, the number of covers to be used must be adapted according to the exact nature of the petroleum hydrocarbons spilled on the polluted surface. Indeed, the absorption capacity of the bicyclo powder polymer (2.2.1) heptene-2 or of its ethylene derivative varies greatly from one fraction of hydrocarbons to another: while it generally reaches order of 1 to 10 parts by weight of hydrocarbon per 1 part of polymer in the case of heavy hydrocarbons, as mentioned by the patent FR-A-2,288,709 cited above, it has surprisingly been discovered that it can reach up to 40 parts by weight of hydrocarbons per 1 part by weight of polymer in the case of transformers oils and lighter hydrocarbons such as domestic fuel, benzene, toluene and xylene. According to one embodiment of the method according to the invention, the number of textile covers placed on the polished surface, when the polluting product is a petroleum product, is therefore chosen in such a way that the quantity of powdered polymer contained in the assembly covers is between 1/40 and 1 times the quantity of polluting product to be absorbed.
Le temps nécessaire à l'absorption des produits polluants par le polymère en poudre contenu dans la housse textile dépend d'une part de la nature chimique desdits produits polluants, d'autre part de leur mode de rë- partition, compacte ou dispersée, sur la surface polluée. Dans le cas des produits pétroliers, ce temps dépend du fait de savoir s'il s'agit d'hydro¬ carbures lours ou légers. Dans le cas de ces derniers, ce temps est généra¬ lement compris entre une demi-heure et quelques heures. Une fois l'essentiel des produits polluants absorbés par le polymère, la housse et son contenu peuvent être aisément évacués, notamment grâce au moyen de préhension indi¬ que précédemment, sans risques d'exsudation et/ou d'écoulement, par exemple vers un point de décharge autorisée ou encore vers un lieu d'incinération.The time required for the absorption of polluting products by the powdered polymer contained in the textile cover depends on the one hand on the chemical nature of said polluting products, on the other hand on their distribution mode, compact or dispersed, over the polluted surface. In the case of petroleum products, this time depends on whether it is heavy or light hydrocarbons. In the case of the latter, this time is generally between half an hour and a few hours. Once most of the polluting products have been absorbed by the polymer, the cover and its contents can be easily removed, in particular by means of the gripping means indicated above, without the risk of exudation and / or flow, for example towards a authorized discharge point or to a place of incineration.
Les exemples ci -après sont donnés à titre illustratif et non limi¬ tatif de la présente invention. EXEMPLE 1The examples below are given by way of illustration and not by way of limitation of the present invention. EXAMPLE 1
On tamise un polybicyclo(2.2.1)heptène-2 commercialisé par la de¬ manderesse sous la marque N0RS0REX sur un tamis de maille 0,32 mm. Le refus de tamis, de granulomêtrie comprise entre 0,32 et 2 mm, est additionné de 1% de stërarate de zinc comme agent anti- ottant. On introduit 200 g de ce mé¬ lange, de densité en vrac de 0,45, dans une housse en nylon tissé de maille 0,15 mm, de 1 mètre de long et 6 cm de diamètre, et dont les deux extrémités sont obturées au moyen de bagues métalliques. EXEMPLE 2A polybicyclo (2.2.1) heptene-2 sold by the applicant under the brand N0RS0REX is sieved through a 0.32 mm mesh sieve. The rejection of sieves, with a particle size between 0.32 and 2 mm, is added by 1% zinc stearate as an anti-slip agent. 200 g of this mixture, of 0.45 bulk density, are introduced into a nylon cover woven with 0.15 mm mesh, 1 meter long and 6 cm in diameter, and the two ends of which are closed. by means of metal rings. EXAMPLE 2
On dispose la housse de l'exemple 1 dans un bac de rétention con¬ tenant 2,5 kg de fuel oil domestique. Le fuel-oil est progressivement absor¬ bé par le contenu de la housse. 90 minutes après la mise en contact, tout le fuel-oil a migré et se trouve emprisonné par la housse. Le fond du bac de rétention est quasi-totalement sec. La housse et son contenu peuvent être évacués sans risque d'exsudation ou d'écoulement. La même observation peut être faite lorsque la même quantité de fuel-oil domestique est répandue à la surface d'un bac contenant de l'eau. EXEMPLE 3 On dispose la housse de l'exemple 1 dans un bac de rétention con¬ tenant 2,5 kg de toluène. Après 2 heures, le toluène est intégralement absorbé et transformé en un gel consistant, non exsudant, à l'intérieur de la housse enflée. Il en va de même lorsque la même quantité de toluène est répandue à la surface d'un bac contenant de l'eau. The cover of Example 1 is placed in a retention tank containing 2.5 kg of domestic fuel oil. The fuel oil is gradually absorbed by the contents of the cover. 90 minutes after contacting, all the fuel oil has migrated and is trapped by the cover. The bottom of the retention tank is almost completely dry. The cover and its contents can be removed without risk of exudation or leakage. The same observation can be made when the same quantity of domestic fuel oil is spilled on the surface of a tank containing water. EXAMPLE 3 The cover of Example 1 is placed in a retention tank containing 2.5 kg of toluene. After 2 hours, the toluene is completely absorbed and transformed into a consistent, non-exuding gel, inside the swollen cover. The same applies when the same amount of toluene is spilled on the surface of a container containing water.

Claims

REVENDICATIONS
1. Article de dëpollution comprenant un polymère en poudre de bi¬ cyclo (2.2.1) heptène-2 ou de son dérive mëthylë, caractérisé en ce qu'il comprend au moins une housse en textile à maille fine remplie au moins par- tiellement dudit polymère.1. Pollution control article comprising a bi¬ cyclo powder polymer (2.2.1) heptene-2 or its methyl derivative, characterized in that it comprises at least one fine mesh textile cover filled at least partially of said polymer.
2. Article selon la revendication 1, caractérise en ce que la housse à maille fine est réalisée en matériau tissé.2. Article according to claim 1, characterized in that the fine mesh cover is made of woven material.
3. Article selon la revendication 1, caractérisé en ce que la housse à maille fine est réalisée en matériau non-tissë. 3. Article according to claim 1, characterized in that the fine mesh cover is made of non-woven material.
4. Article selon la revendication 1, caractérisé en ce que la housse I maille fine est réalisée en un matériau synthétique choisi parmi nylon, polyester, polypropylène, viscose ou leurs mélanges.4. Article according to claim 1, characterized in that the cover I fine mesh is made of a synthetic material selected from nylon, polyester, polypropylene, viscose or mixtures thereof.
5. Article selon la revendication 1, caractérise en ce que la housse à maille fine est en coton. 5. Article according to claim 1, characterized in that the fine mesh cover is cotton.
6. Article selon l'une des revendications 1 à 5, caractérisé en ce que les côtés et/ou les extrémités de la housse sont obturés par un moyen de fermeture.6. Article according to one of claims 1 to 5, characterized in that the sides and / or the ends of the cover are closed by a closure means.
7. Article selon l'une des revendications 116, caractérise en ce que la housse comporte, fixé de préférence à au moins l'une de ses extrêmi- tes, au moins un moyen de préhension permettant de la tirer ou de la tracter par des moyens mécaniques.7. Article according to one of claims 116, characterized in that the cover comprises, preferably fixed to at least one of its ends, at least one gripping means allowing it to be pulled or towed by mechanical means.
8. Article selon Tune des revendications 1 à 7, caractérisé en ce que le polymère en poudre contenu dans la housse présente une dimension de particules comprise entre 0,01 et 2 mm. 8. Article according to one of claims 1 to 7, characterized in that the powdered polymer contained in the cover has a particle size between 0.01 and 2 mm.
9. Article selon Tune des revendications 1 à 8, caractérisé en ce que le polymère en poudre est mélangé avec au moins un autre agent absor¬ bant.9. Article according to one of claims 1 to 8, characterized in that the powdered polymer is mixed with at least one other absorbent agent.
10. Procédé pour absorber des produits polluants liquides, carac¬ térisé en ce qu'on dispose à la surface dudit l quide au moins une housse en textile à maille fine remplie au moins partiellement d'un polymère en poudre de bicyclo (2.2. l)heptène-2 ou de son dérivé mëthylé.10. A method for absorbing liquid pollutants, charac¬ terized in that there is at the surface of said l which at least one fabric cover with a fine mesh at least partially filled with a powdered bicyclo polymer (2.2. L ) heptene-2 or its methyl derivative.
11. Procédé selon la revendication 10, caractérisé en ce que les produits polluants liquides sont des produits pétroliers.11. Method according to claim 10, characterized in that the liquid pollutants are petroleum products.
12. Procédé selon la revendication 11, caractérisé en ce que le nombre de housses est choisi de telle manière que la quantité de polymère en poudre contenu dans l'ensemble des housses soit compris entre 1/40 et 1 fois la quantité de produit polluant à absorber. 12. Method according to claim 11, characterized in that the number of covers is chosen so that the quantity of powdered polymer contained in the set of covers is between 1/40 and 1 times the quantity of polluting product to absorb.
PCT/FR1988/000089 1987-02-19 1988-02-18 Article for pollution control and process for absorbing pollutants WO1988006141A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR87/02141 1987-02-19
FR8702141A FR2611146B1 (en) 1987-02-19 1987-02-19 DEPOLLUTION ARTICLE AND METHOD FOR ABSORBING POLLUTANTS

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ES (1) ES2009233A6 (en)
FR (1) FR2611146B1 (en)
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FR2643083A1 (en) * 1989-02-14 1990-08-17 Norsolor Sa PROCESS FOR ABSORBING ORGANIC POLLUTANTS
EP0383641A1 (en) * 1989-02-17 1990-08-22 Elf Atochem S.A. Composition and process for absorbing harmful products
FR2645047A1 (en) * 1989-03-29 1990-10-05 Weber Sa A Process for the production of absorbent and plasticising belts or strips for the removal of hydrocarbons and absorbent belt or strip obtained by the application of this process
US5360548A (en) * 1989-02-14 1994-11-01 Elf Atochem, S.A. Process for absorbing organic polluting products

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FR2635332B1 (en) * 1988-06-30 1994-05-20 Norsolor ARTICLE AND METHOD FOR ABSORBING POLLUTANTS

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FR2288709A1 (en) * 1974-10-24 1976-05-21 Charbonnages Ste Chimique PROCESS FOR REMOVING PETROLEUM PRODUCTS FROM SOLID OR LIQUID SURFACES
EP0027359A1 (en) * 1979-10-10 1981-04-22 Alfred Frank Crotti Method of removing oil from water, and bag and two or more linked bags of feathers for use therein
US4366067A (en) * 1980-10-20 1982-12-28 Golding Gordon R Method and apparatus for removal and recovery of oil

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FR2090452A5 (en) * 1969-11-03 1972-01-14 Grace W R Ltd
FR2288709A1 (en) * 1974-10-24 1976-05-21 Charbonnages Ste Chimique PROCESS FOR REMOVING PETROLEUM PRODUCTS FROM SOLID OR LIQUID SURFACES
EP0027359A1 (en) * 1979-10-10 1981-04-22 Alfred Frank Crotti Method of removing oil from water, and bag and two or more linked bags of feathers for use therein
US4366067A (en) * 1980-10-20 1982-12-28 Golding Gordon R Method and apparatus for removal and recovery of oil

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2643083A1 (en) * 1989-02-14 1990-08-17 Norsolor Sa PROCESS FOR ABSORBING ORGANIC POLLUTANTS
EP0383640A1 (en) * 1989-02-14 1990-08-22 Elf Atochem S.A. Process for absorbing harmful organic products
WO1990009414A1 (en) * 1989-02-14 1990-08-23 Norsolor Process for the absorption of organic pollutants
US5360548A (en) * 1989-02-14 1994-11-01 Elf Atochem, S.A. Process for absorbing organic polluting products
EP0383641A1 (en) * 1989-02-17 1990-08-22 Elf Atochem S.A. Composition and process for absorbing harmful products
WO1990009415A1 (en) * 1989-02-17 1990-08-23 Norsolor Composition and process for the absorption of pollutants
FR2643381A1 (en) * 1989-02-17 1990-08-24 Norsolor Sa COMPOSITION AND METHOD FOR ABSORBING POLLUTANT PRODUCTS
FR2645047A1 (en) * 1989-03-29 1990-10-05 Weber Sa A Process for the production of absorbent and plasticising belts or strips for the removal of hydrocarbons and absorbent belt or strip obtained by the application of this process

Also Published As

Publication number Publication date
IT1219455B (en) 1990-05-18
FR2611146A1 (en) 1988-08-26
IT8847645A0 (en) 1988-02-18
ES2009233A6 (en) 1989-09-16
FR2611146B1 (en) 1991-02-15
BE1006271A3 (en) 1994-07-12

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