EP2126023A1 - Mousse de décontamination, de décapage et/ou de dégraissage à particules solides - Google Patents
Mousse de décontamination, de décapage et/ou de dégraissage à particules solidesInfo
- Publication number
- EP2126023A1 EP2126023A1 EP08716848A EP08716848A EP2126023A1 EP 2126023 A1 EP2126023 A1 EP 2126023A1 EP 08716848 A EP08716848 A EP 08716848A EP 08716848 A EP08716848 A EP 08716848A EP 2126023 A1 EP2126023 A1 EP 2126023A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- agent
- solid
- foaming
- particles
- foam
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0094—High foaming compositions
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
- C11D17/0013—Liquid compositions with insoluble particles in suspension
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/042—Acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/044—Hydroxides or bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/40—Specific cleaning or washing processes
- C11D2111/42—Application of foam or a temporary coating on the surface to be cleaned
Definitions
- the present invention relates to the field of decontamination, stripping and degreasing surfaces.
- the surfaces to be treated in the context of the present invention may be metal surfaces or not, more or less accessible and contaminated with grease, by radioactive mineral deposits, by an oxide layer or in the mass.
- the present invention provides a solution, a composition and a foam for decontaminating, etching and degreasing such surfaces.
- the composition and the solution according to the present invention make it possible to obtain a foam capable of decontaminating, pickling and / or degreasing any type of surface and, more particularly, a foam containing a solid stabilizing agent such as solid particles.
- the present invention also relates to a process for preparing said foam and its use.
- compositions for the treatment of surfaces. These compositions can be in the form of both gels and foams.
- the applicant's previous work has notably made it possible to develop a gelled (or viscose) decontamination foam containing from 0.2 to 2% by weight of organic surfactant (s) foaming agent (s) from 0.1 to 1.5% by weight of gelling agent and from 0.2 to 7 M of acid (s) or inorganic base (s) for radioactive decontamination.
- a gelled foam is described in international application WO2004 / 008463.
- This foam has many advantages vis-à-vis the compositions and, especially, vis-à-vis the decontamination compositions of the state of the art. These advantages include an increased life span, better efficiency in the treatment of surfaces and a decrease in the amount of effluent produced.
- An object of the present invention is to provide a foam having properties further improved over the foams described in the international application WO2004 / 008463.
- the improvements relate, in particular, the amount of surfactant (s) necessary (s) to form a given volume of foam, the amount of gelling agent to stabilize the foam and the treatment of products obtained at the end of the life of the foam once the decontamination, stripping and / or degreasing performed.
- the work of the Applicant has made it possible to develop a foam useful in the decontamination, stripping and degreasing of surfaces which has not only the properties of the gelled foams of the state of the art (such as increased service life). , a better efficiency in the treatment of surfaces and a decrease in the amount of effluents produced) but also the improvements described above.
- This objective is achieved by means of a stabilized foam comprising a solid stabilizing solid particle type agent.
- the stabilized foam of the present invention has a long life, between 1 and 24 hours, ensuring a prolonged contact time with the surface to be treated and a maintenance on this surface of a foam having a certain humidity. These advantages are particularly interesting when the surface to be treated includes hot spots.
- the life time of the stabilized foam according to the invention makes it possible to obtain a decontamination, pickling and / or significant degreasing efficiency and to find the same decontamination efficiencies as in the case of washes with decontaminating solutions.
- the foam consists of a dispersion of air bubbles in liquid and is often characterized by its expansion (F), defined under normal conditions of temperature and pressure, by the following relation: foam / liquid ⁇ liquid gas
- F expansion
- the stabilized foam according to the invention has initial expansion at the generator outlet of the order of 5 to 20, and, in the case of nuclear decontamination, 10 to 15, which makes it possible to treat a large volume (for example 100 m 3 ) with less than 10 m 3 of liquid.
- the stabilized foam according to the invention makes it possible, like the gelled foams described in the international application WO2004 / 008463, to eliminate the radioactivity of inaccessible installations, of large size, or of complex geometry, by filling ("static” action ”) , by circulation, or by spraying on an accessible surface.
- the use of a decontaminating foam filling the tank is particularly recommended.
- the foam limits the dead volumes of liquid, occupying the entire space and wetting all surfaces such as cooling coils and other equipment in the middle or in the tank.
- a solid solid-type stabilizing agent into the foam according to the invention has, in addition to the advantages developed above, the following original and unexpected advantages: the reduction or even the suppression of the amount of surfactants necessary for to form a given volume of foam, reducing or eliminating the amount of conventional biodegradable organic gelling agent, the possibility of sorption of chemical entities, such as pollutants or radioelements, detached from the surface to be treated,
- the stabilized foam of the invention can be stabilized only by the mineral and / or organic particles it contains. The quantities of reagents necessary for the mineralization of the liquid effluent generated and the duration of the treatment (cost) are thus reduced.
- the stabilized foam according to the present invention additionally contains a conventional organic stabilizer (or viscosifier) stabilizer of the prior art, the amount of said gelling agent is less thanks to the compensating action of the particles.
- This compensatory gain in stability provided by the particles comes either from the clogging of the flow channels in the foam retarding the drainage of the liquid, or, for large concentrations of particles (and depending on the nature of the particle and the foaming medium), by proper viscosification of the liquid.
- the solid stabilizing agent of the solid particle type of the stabilized foam according to the invention can be positioned at the gas / liquid interfaces by partly replacing the foaming surfactants, which allows a reduction in the amount of surfactant used.
- the solid stabilizing agent of the solid particle type can capture chemical entities and in particular the unhooked elements of the surface to be treated. This capture may consist of a conventional sorption (if the solid particles are present in the solution), or of a coprecipitation (if the solid particles are formed in situ). As part of the decontamination of nuclear facilities, the decontamination factors obtained with such particles are often greater than 100. Moreover, the sorption takes place in the foam and can also be continued in the drained liquid.
- the solid particles that have or have not captured chemical entities are easily recovered, for example, by decantation or filtration.
- the present invention therefore relates to a stabilized foam consisting of an aqueous foaming solution containing: from 0.1 to 7 moles of one or more reagents for decontamination, pickling and / or degreasing per liter of solution, and
- solid stabilizing agent means any solid substance which, incorporated in the aqueous foaming solution, makes it possible to improve the stability of the foam obtained from the latter.
- the stabilizing effect obtained can cause not only the formation of a large volume of foam but also lead to a greater persistence of the formed foam.
- the solid stabilizing agent in the context of the present invention may be a single solid stabilizing agent or a mixture of solid stabilizing agents of the same or different nature.
- the solid stabilizing agent used in the context of the present invention is in the form of solid particles. Solid particles of the same nature or mixtures of solid particles of different types can be used in the present invention.
- the stabilized foam consisting of an aqueous foaming solution object of the present invention contains at least one foaming and / or sorbent solid agent.
- the solid stabilizing agent in the form of solid particles, may also have foaming and / or sorbing properties.
- foaming stabilizing solid agents, sorbent stabilizing solid agents, solid stabilizing, foaming and sorbating agents and mixtures thereof is particularly contemplated.
- a solid agent having foaming and / or sorbing properties is added to a solid stabilizing agent.
- a mixture comprising at least one solid stabilizing agent and at least one foaming solid agent is particularly contemplated; a mixture comprising at least one stabilizing solid agent and at least one solid sorbent agent; and a mixture comprising at least one solid stabilizing agent and at least one solid foaming and sorbing agent.
- solid stabilizing agent solid particles, nature and form
- the cesium-sorbent nickel ferrocyanides ppFeNi are an example of a solid agent with sorbent properties.
- the colloidal silica particles with a diameter of 650 nm, at 54 g / l, and grafted with aminopropyltriethoxysilane at the rate of 15 molecules per nm 2 are an example of a solid agent with foaming properties.
- the stabilizing solid agent such as solid particles is present in the foaming aqueous solution constituting the stabilized foam according to the invention, in a content ranging from 0.01% to 25%, especially from 0.05% to 10% by weight. weight, in particular from 0.1% to 5% by weight and more particularly from 0.5% to 3% by weight, relative to the total weight of the solution.
- the percentage by total weight of solid agents is less than or equal to 30%.
- the solid stabilizing agent such as the solid particles may be spherical or perfectly arbitrary and have a monodisperse or polydisperse size distribution.
- the solid particles have characteristic dimensions of between 2 nm and 200 ⁇ m and in particular between 5 nm and 30 ⁇ m.
- the solid stabilizing agent may be in the form of fully inorganic (i.e. entirely inorganic), all-organic, solid particles or inorganic-organic hybrid particles or a mixture of at least two of these types of the same or different particles.
- the hybrid character may consist of an organic core and a mineral surface, or vice versa.
- the solid particles used in the present invention are mineral and / or organic as explained above, their surface may be either homogeneous hydrophilic or homogeneous hydrophobic, or have hydrophilic surface areas and representing 0, 01 to 99.99% of the total area, the remainder of the surface (99.99 to 0.01% of the total area) being hydrophobic. In the case where these two types of zones are distinctly separated, the particles are called "amphiphilic particles".
- the solid particles according to the invention can be functionalized by grafting organic molecules.
- Organic molecules to be grafted onto the solid particles according to the invention have the advantage in particular to improve the sorption properties of chemical entities, such as radioelements, detached from the surface to be treated.
- the organic molecules may be organic extracting and / or complexing molecules such as polydentate ligands (for example EDTA-ethylenediaminetetraacetic acid), calixarenes or crown ethers.
- the organic molecules grafted onto the solid particles may be used to modify or improve the hydrophilic, hydrophobic or amphiphilic nature of said particles. Those skilled in the art know different organic molecules that can be used to obtain these different results.
- inorganic solid particles there are particles of phosphotungstic acid, nickel ferrocyanide, oxide, hydroxide, carbonate, sulfate, nitrate, oxalate and / or titanate of one or more (for example, a mixed aluminosilicate oxide) species selected from alkali metals (e.g.
- solid particles are in particular available from ACROS ORGANICS.
- solid inorganic particles sorbent radioelements and usable in the context of the present invention, mention may be made of particles Ca 3 (PO 4 ) 2, CaCo 3, MnO 2, phosphotungstic acid (H 3 PO 4 .12WO3. xH 2 O) and nickel ferrocyanide (ppFeNi).
- the strontium is captured in basic medium (pH> 11) by Ca 3 (PO 4 ) 2, CaCO 3 or MnO 2 .
- Cesium is taken up in an acid medium by phosphotungstic acid (H 3 PO 4 .12WO 3 ⁇ xH 2 0), and in a moderately basic medium (pH ⁇ 10) with nickel ferrocyanide ppFeNi. Apart from nickel ferrocyanide, formed in situ by the reaction between potassium ferrocyanide and nickel sulphate, all these reagents are available for example from ACROS ORGANICS.
- the entirely organic particles are composed of thermoplastic and / or thermosetting polymers and copolymers and / or of biopolymers.
- the organic solid particles are solid particles of thermoplastic polymers or copolymers of the following families:
- thermosetting polymers or copolymers such as aminoplasts (urea-formaldehyde resins), polyurethanes, unsaturated polyesters, phenoplasts (phenol-formaldehyde resins), polysiloxanes, epoxy resins, allylic resins. and vinylesters, alkyds (glycerophthalic resins), polyureas, polyisocyanurates, poly (bismaleimide), and polybenzimidazoles.
- the particles resulting from these polymers are synthesizable by radical, anionic or cationic polymerization, polycondensation, copolymerization / copoly-condensation, thermally, photochemically, radiochemically, and this in emulsion, in suspension, and by precipitation.
- the precursors at the base of these polymers are available from ALDRICH, ACROS ORGANICS, FLUKA and ARKEMA.
- the organic solid particles may also consist of copolymers containing the monomer units at the base of the above polymers, for example poly (vinylidene chloride) -co-poly (vinyl chloride) or poly (styrene / poly) copolymers. acrylonitrile).
- the organic / inorganic hybrid solid particles may have a surface at least a portion of which is mineral and an organic core, or vice versa.
- these inorganic-organic hybrid particles have either an organic core consisting of at least one chemical compound chosen from the compounds usable for the organic solid particles previously described and a surface of which at least a part is mineral and composed of at least one chemical compound chosen from the compounds that can be used for the mineral solid particles previously described,
- Hybrid dissymetrical colloidal particles - Chem. Mater. 2005, 17, 3338-3344.
- the hybrid particles may have an organic surface portion and a mineral surface portion.
- These hybrid particles may, for example, be prepared by epitaxial growth in the vapor phase (or chemical vapor deposition) or liquid (by chemical precipitation of a mineral layer on an organic particle).
- the particles of opposite configuration (mineral core and organic surface) can be easily formed by coating mineral particles by the previously detailed polymers.
- these synthetic techniques make it possible to form amphiphilic heterogeneous inorganic or organic particles, included in the list of particles that may be suitable for formulating the foams of the present patent.
- the hybrid particles may also be, for example, mesoporous silica particles on the surface of which are grafted organic extractant or complexing molecules such as polydentate ligands (for example EDTA - ethylenediaminetetraacetic acid), calixarenes or ethers crowns.
- polydentate ligands for example EDTA - ethylenediaminetetraacetic acid
- calixarenes for example EDTA - ethylenediaminetetraacetic acid
- the foaming aqueous solution constituting the stabilized foam according to the invention comprises a decontamination, pickling and / or degreasing agent.
- a decontamination, pickling and / or degreasing agent is chosen according to the use for which the foam is intended.
- the active agent is chosen in particular according to the nature of the contamination and the surface to be decontaminated.
- the decontamination, pickling and / or degreasing agent is chosen from an acid or a mixture of acids, a base or a mixture of bases, an oxidizer (for example H 2 O 2), a reducing agent, a disinfectant, a antioxidant, antiseptic, etc.
- an oxidizer for example H 2 O 2
- a reducing agent for example a reducing agent
- a disinfectant for example a antioxidant
- antiseptic antiseptic
- the decontamination, pickling and / or degreasing agent can be chosen from a mineral or organic acid
- an acidic or alkaline foam may have either radiation-dissolving properties of radioactive deposits, for example for the elimination of non-fixed contamination on a surface, or Controlled corrosion properties of the surface for a fixed contamination on it.
- the decontamination, pickling and / or degreasing agent is a mineral acid chosen from hydrochloric acid, nitric acid, hydrofluoric acid, sulfuric acid, phosphoric oxalic acid, formic acid, citric acid, ascorbic acid, and mixtures thereof.
- the acid is advantageously present at a concentration of from 0.1 to 7 moles, especially from 0.2 to 6 moles, in particular from 0.5 to 5 moles and more particularly from 1 to 4 moles. These concentration ranges naturally relate to the H + ion concentration given for the preparation of 1 liter of foaming solution.
- the decontamination, pickling and / or degreasing agent is a mineral base chosen from soda, potassium hydroxide, sodium or potassium carbonate and mixtures thereof.
- the base is advantageously present at a lower concentration 4 mol.l "" ", preferably from 0.5 to 1, 5 mol.l ⁇ . These concentration ranges relate, of course OH ion concentration" given for the preparation of 1 liter of foaming solution.
- the foaming aqueous solution constituting the stabilized foam according to the invention may further comprise a surfactant, a mineral oxidizing agent, a complexing agent and / or an organic gelling agent.
- the foaming aqueous solution constituting the stabilized foam according to the invention may comprise at least one surfactant, and, more particularly, a single surfactant or a mixture of at least two surfactants chosen from foaming surfactants.
- foaming surfactants nonionic surfactants, anionic or cationic foaming surfactants, amphoteric surfactants, Bolaform type surfactants, Gemini type surfactants and polymeric surfactants.
- the stabilized foam according to the invention may comprise a single surfactant or a mixture of at least two surfactants chosen from alkylpolyglucosides, sulfobetaines, alkanolamides and block copolymer surfactants (such as block copolymers). based on ethylene oxide or propylene), ethoxylated alcohols and amine oxides.
- the surfactant used is a foaming nonionic surfactant.
- a foaming nonionic surfactant Foaming nonionic is described in international application WO2004 / 008463. It is, for example, chosen from the family of alkylpolyglucosides or alkylpolyetherglucosides, natural derivatives of glucose and biodegradable. These are, for example, the "ORAMIX CG-110" from the company SEPPIC, or the "Glucopon 215 CS" from the company COGNIS.
- the surface-active agent used is an amphoteric surfactant, for example from the family of sulphobetaines or alkylamidopropylhydroxy-sulphobetaines, such as the "AMONYL 675 SB” marketed by the company SEPPIC, or from the family of amine-oxides such as "AROMOX MCD-W", cocodimethylamine oxide marketed by the company Akzo Nobel.
- amphoteric surfactant for example from the family of sulphobetaines or alkylamidopropylhydroxy-sulphobetaines, such as the "AMONYL 675 SB” marketed by the company SEPPIC, or from the family of amine-oxides such as "AROMOX MCD-W", cocodimethylamine oxide marketed by the company Akzo Nobel.
- the surface-active agent is present in a proportion of from 0.01 to 2% by weight, in particular from 0.1 to 1.8% by weight, in particular from 0, 2 to 1.5% by weight, and most preferably from 0.5 to 1% by weight relative to the total weight of the solution.
- the foaming aqueous solution constituting the stabilized foam according to the invention may also contain a mineral oxidizing agent, advantageously chosen from potassium permanganate, cerium (IV) salts, potassium dichromate and mixtures thereof.
- a mineral oxidizing agent advantageously chosen from potassium permanganate, cerium (IV) salts, potassium dichromate and mixtures thereof.
- the concentration of oxidizing agent in the foaming solution is less than or equal to 1 M, in particular between 0.05 to 0.5 M, in particular between 0.1 to 0.4 M and more particularly between 0.2 to 0.3 M.
- the foaming aqueous solution constituting the stabilized foam according to the invention may also contain a complexing agent advantageously chosen from carbonates and polydentate ligands such as EDTA at concentrations of less than or equal to 1 M, in particular between 0, 01 and 0.5 M, in particular between 0.02 and 0.1 M and more particularly between 0.05 and 0.1 M.
- a complexing agent advantageously chosen from carbonates and polydentate ligands such as EDTA at concentrations of less than or equal to 1 M, in particular between 0, 01 and 0.5 M, in particular between 0.02 and 0.1 M and more particularly between 0.05 and 0.1 M.
- the foaming solution constituting the stabilized foam may comprise, in addition to the components mentioned above, an organic gelling agent (or viscosizing agent) in a content of less than or equal to 0.05% by weight, in particular less than or equal to to 0.04% by weight and in particular less than or equal to 0.02% by weight relative to the total weight of the solution.
- an organic gelling agent or viscosizing agent
- This gelling agent is advantageously a biodegradable gelling agent, more particularly, chosen from heterogeneous polyholosides such as pectins, alginates, agars, carrageenans, locust bean meal, guar meal and xanthan gum.
- heterogeneous polyholosides such as pectins, alginates, agars, carrageenans, locust bean meal, guar meal and xanthan gum.
- the stabilized foam according to the present invention can be prepared in different ways.
- the present invention relates to a method for preparing a stabilized foam as defined above.
- the various components of the foaming aqueous solution constituting said foam ie the active agent for decontamination, pickling and / or degreasing, the solid stabilizing agent and, optionally, the surfactant, the oxidizing agent, the complexing agent, the gelling agent and / or the solid foaming and / or sorbing agent are mixed together to form an aqueous solution prior to generating the foam.
- the introduction of these different components into the mixture can be carried out in any order. In case of particularities in the introduction of these agents, the skilled person will know how to choose, thanks to this knowledge, the order of introduction according to the agents implemented.
- the solid stabilizing agent may be formed in situ in the mixture.
- the solid stabilizing agent consists of solid particles of nickel ferrocyanide.
- This in situ training can be more or less fast. It can in particular take place in the presence of the contaminating chemical entities which, therefore, can be coprecipitated with the solid particles thus formed.
- the various components of the foaming aqueous solution constituting said foam ie the active agent for decontamination, pickling and / or degreasing and, optionally, the surfactant, the agent solid stabilizer, the solid foaming and / or sorbing agent, the oxidizing agent, the complexing agent and / or the gelling agent are mixed together, all or part of the solid stabilizing agent and / or all of the solid foaming agent and / or sorbent being brought directly into the gas to form a smoke contacted with the foaming liquid and generate the foam.
- the solid stabilizing agent is not present in the initial aqueous mixture and is provided only by the gas.
- the solid stabilizing agent is not only brought directly by the gas but also present in the aqueous mixture as in the conditions as presented in the first embodiment. implementation of the preparation process (ie stabilizing solid agent mixed with the other components or product in situ during mixing).
- stabilized foam comprises in addition to an agent solid stabilizer at least one solid foaming agent and / or sorbent.
- stabilizer means a stabilizing solid agent, a foaming stabilizing solid, a solid stabilizing sorbent, a solid stabilizing, foaming and sorbing agent or mixtures thereof;
- Foaming and / or sorbent a foaming solid agent, a solid sorbent, a foaming and sorbent solid or mixtures thereof; a type of solid agent (i.e., stabilizer, or foaming agent and / or sorbent) quoted twice on a line of Table 2 may be the same or different.
- the foam can be generated by any Foam generation system of the prior art and known to those skilled in the art.
- This is any device ensuring the gas-liquid mixture, in particular by mechanical stirring, by bubbling, by static mixer containing balls or not, devices described in patent FR-A-2,817,170, or devices using a spray nozzle or spray, etc.
- the present invention also relates to the use of a stabilized foam as defined above or a stabilized foam prepared according to a method as previously defined for decontaminating, etching and / or degreasing a surface.
- the decontamination of a surface is carried out by dissolving irradiating surface deposits or by corrosion over a few millimeters of the contaminated wall.
- this use is applicable to cleaning but will be of particular interest for the decontamination of contaminated metal surfaces either by fatty deposits or radioactive minerals, or by a layer of oxides.
- the contamination can also be located in a layer of several tens or hundreds of microns in the mass of the material to be treated.
- the present invention also relates to a method for decontaminating, etching and / or degreasing a surface comprising the steps of: a) preparing a stabilized foam according to the previously defined preparation methods, b) applying the stabilized foam obtained to the step (a) on the surface to be treated.
- the stabilized foam is used statically, in pseudostatic (or in rise-rest cycles), in circulation or spray.
- the method for decontaminating, stripping and / or degreasing a surface may also include an additional step of recovering the foam and / or the liquid constituting the foam after it has been drained.
- this additional step consists in recovering by suction or suction the foam having not finished draining.
- the foam is then sent to a device for recovering the solid stabilizing agent of the solid particle type it contains, for example a particulate filter.
- this additional step consists in recovering the liquid constituting the foam after its drainage, in order to separate the solid stabilizing agent of the solid particle type from the liquid.
- This separation can advantageously be carried out by decantation, preceded or not by flocculation, centrifugation, filtration, or any other device making it possible to recover a solid dispersed in a liquid.
- the solid-solid stabilizing agent thus recovered from the drained liquid may then be: reused in the decontamination, pickling and / or degreasing (recycling) process, or regenerated, in particular by desorption of the captured chemical entities,
- the effluent without the stabilizing solid agent recovered after the separation step as previously defined has a lower contamination and a lower foamability. Indeed, such advantages are obtained thanks to the foaming and sorbent properties of the solid agents present in the decontamination, pickling and / or degreasing foam according to the invention.
- the effluent thus recovered can be more easily treated, possibly after a mineralization step, vitrified or asphalted.
- the various techniques used during the decontamination, pickling and / or degreasing process according to the invention, such as asphalting, vitrification, centrifugation, filtration, etc., are techniques well known to the skilled person. job.
- Other features and advantages of the present invention will become apparent on reading the examples given below by way of illustration and not limitation and with reference to the appended figures.
- Figure 1 shows the apparatus used to generate foams according to the invention or the state of the art, and whose drainage is quantified by turbidity measurements over time.
- FIG. 2 shows the drainage kinetics obtained with the phosphonitic acid foams of the state of the art or according to the invention. More particularly, FIG. 2 shows the evolution over time of the standardized liquid heights at the bottom of the test piece, for foams of the state of the art (phosphonitric acid foams containing 1, 2, or 3 g / l of xanthan gum or 0 g / l of silica particles) and phosphonitic acid foams according to the invention ie containing 10, 15 or 20 g / l of silica particles.
- FIG. 3 shows the drainage kinetics obtained with the alkaline foams of the state of the art or according to the invention. More particularly, FIG. 2 shows the evolution over time of the standardized liquid heights at the bottom of the test piece, for an alkaline foam of the state of the art containing 1 g / l of xanthan gum and for an alkaline foam according to the invention containing 10 g / 1 of silica particles.
- EXAMPLE 1 Comparison of the Drainage Kinetics of Viscous Foams and Particulate Foams
- GLUCOPON 215 CS (COGNIS company) at 1.5 M H 3 PO 4 , 1.5 M HNO 3, and containing a biodegradable organic viscosity agent, xanthan gum; from a foamable solution containing the same concentrations of surfactant and acid, but in which the viscosity modifier is replaced with particles of Aerosil 380 ® in concentrations of 0, 10, 15, and 20 g / 1.
- the particles of Aerosil ® 380 marketed by DEGUSSA (or Stochem) are hydrophilic fumed silica particles having a specific surface area of 380 m 2 / g ⁇ 30 m 2 / g.
- the kinetics of the drainage of these mosses is followed by the turbidimetry of the mosses as a function of time.
- the principle of this measure is based on the difference in behavior of a foam and a liquid when they are illuminated by a beam of near infrared light: the foam reflects it while the liquid transmits it.
- the appearance of the liquid at the bottom of the sample tubes containing the foams results in a signal that increases with time.
- Figure 2 shows the evolution over time of liquid heights at the bottom of the specimen, for foams containing 1, 2, or 3 g / 1 of xanthan gum, and 0, 10, 15, or 20 g / 1 1 of silica particles.
- the silica particles introduced thus perfectly fulfill their role of stabilizer of the foam.
- Aerosil 380 silica particles at 10 g / l
- the other contains xanthan gum at 1 g / l.
- the foaming surfactant is, in both cases, GLUCOPON 215 CS (company COGNIS) at a rate of 10 grams of active ingredient per liter.
- Figure 3 shows the evolution over time of the liquid heights at the bottom of the test tube, for the alkaline foam containing 1 g / 1 of xanthan gum or 10 g / 1 of silica particles.
- APTES aminopropyltriethoxysilane
- Aerosil 380 particles are marketed by STOCHEM
- the primary particle diameter is 7 nm
- the silica adopts a fractal aggregate structure of 60 to 600 nm.
- the size of the naked or grafted colloidal silica particles is determined by spectroscopic correlation of photons on a Zetasizer Nano-ZS marketed by MALVERN.
- the foam is generated in a column similar to that developed by JJ Bikerman. It is a cylindrical column made of glass, with a height of 70 cm and a diameter of 3 cm. It is equipped at its base with a sinter of size 4, for bubbling compressed air to 3 bars in the suspension. For each of the characterization experiments, we introduce 30 ml of the suspension, previously sonicated for 10 minutes. The air flow is imposed at 40 lh "1. The height of foam formed above the liquid is measured after 5 minutes of bubbling. The results obtained are as follows
- the functionalization of the surface of colloidal particles thus favors the foamability of the suspension.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Detergent Compositions (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0753286A FR2912668B1 (fr) | 2007-02-15 | 2007-02-15 | Mousse de decontamination, de decapage et/ou de degraissage a particules solides |
| PCT/EP2008/051792 WO2008101855A1 (fr) | 2007-02-15 | 2008-02-14 | Mousse de décontamination, de décapage et/ou de dégraissage à particules solides |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2126023A1 true EP2126023A1 (fr) | 2009-12-02 |
| EP2126023B1 EP2126023B1 (fr) | 2014-08-27 |
Family
ID=38480610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08716848.0A Active EP2126023B1 (fr) | 2007-02-15 | 2008-02-14 | Mousse de decontamination, de decapage et/ou de degraissage a particules solides |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US8772357B2 (fr) |
| EP (1) | EP2126023B1 (fr) |
| JP (1) | JP5663170B2 (fr) |
| KR (1) | KR101524655B1 (fr) |
| CN (1) | CN101605880B (fr) |
| CA (1) | CA2678112C (fr) |
| ES (1) | ES2525618T3 (fr) |
| FR (1) | FR2912668B1 (fr) |
| RU (1) | RU2470068C2 (fr) |
| WO (1) | WO2008101855A1 (fr) |
| ZA (1) | ZA200905366B (fr) |
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| US20110284648A1 (en) * | 2010-04-20 | 2011-11-24 | California Institute Of Technology | Method to generate micro scale gas filled liquid bubbles as tracer particles or inhaler mist for drug delivery |
| FR2959504B1 (fr) * | 2010-04-30 | 2012-06-29 | Total Raffinage Marketing | Utilisation de molecules organogelatrices dans des compositions bitumineuses pour ameliorer leur resistance aux agressions chimiques |
| FR2962046B1 (fr) | 2010-07-02 | 2012-08-17 | Commissariat Energie Atomique | Gel de decontamination biologique et procede de decontamination de surfaces utilisant ce gel. |
| US8839661B2 (en) | 2010-10-26 | 2014-09-23 | Dow Global Technologies Llc | Direct quantitative colorimetric measurement of liquid foam |
| US20120237705A1 (en) * | 2011-03-15 | 2012-09-20 | Ppg Industries Ohio, Inc. | Method for coating containers |
| US20120238703A1 (en) * | 2011-03-15 | 2012-09-20 | Ppg Industries Ohio, Inc. | Thermosetting compositions catalyzed with phosphotungstic acid |
| FR2990364B1 (fr) | 2012-05-11 | 2014-06-13 | Commissariat Energie Atomique | Procede de decontamination radioactive d'une terre par mousse de flottation a air disperse et ladite mousse |
| DE102012219218A1 (de) * | 2012-10-22 | 2014-04-24 | Henkel Ag & Co. Kgaa | Tensid-haltige Schäume |
| JP6291647B2 (ja) * | 2013-04-02 | 2018-03-14 | 学校法人 工学院大学 | 洗浄剤、洗浄方法、および洗浄剤の処理方法 |
| GB201310507D0 (en) * | 2013-06-13 | 2013-07-24 | Reckitt Benckiser Brands Ltd | Product |
| GB201312158D0 (en) * | 2013-07-05 | 2013-08-21 | Xeros Ltd | Method of treating a metal substrate |
| GB201312159D0 (en) * | 2013-07-05 | 2013-08-21 | Xeros Ltd | Method of treating a metal substrate |
| CN103695205B (zh) * | 2013-12-03 | 2016-01-20 | 中国人民解放军总参谋部工程兵科研三所 | 一种自碎式消污液 |
| JP6678917B2 (ja) * | 2014-10-22 | 2020-04-15 | 学校法人 工学院大学 | 洗浄方法 |
| FR3037597B1 (fr) * | 2015-06-16 | 2019-05-31 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Mousse aqueuse desinfectante, son procede de preparation et ses utilisations |
| WO2017017176A1 (fr) * | 2015-07-29 | 2017-02-02 | Basf Se | Particules nettoyantes et leur utilisation |
| CN105624692B (zh) * | 2016-01-29 | 2018-06-29 | 安徽三环水泵有限责任公司 | 一种印染污水管道泵定期泵洗剂 |
| RU2638162C1 (ru) | 2017-03-06 | 2017-12-12 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Композиция для пылеподавления и локализации продуктов горения после тушения пожара с радиационным фактором |
| CN108796526B (zh) * | 2018-05-11 | 2020-05-12 | 佛山市高明利钢精密铸造有限公司 | 一种低碳钢铸锭表面清洁方法 |
| CN108660468B (zh) * | 2018-05-11 | 2019-09-10 | 佛山市高明利钢精密铸造有限公司 | 一种高碳钢铸锭表面清洁方法 |
| CN108456891B (zh) * | 2018-05-11 | 2019-10-25 | 佛山市高明利钢精密铸造有限公司 | 一种不锈钢母合金铸锭表面清洁方法 |
| FR3087090A1 (fr) | 2018-10-12 | 2020-04-17 | Societe D'exploitation De Produits Pour Les Industries Chimiques Seppic | Composition de decontamination de surfaces solides |
| US11572530B2 (en) * | 2019-04-18 | 2023-02-07 | Colorado Mesa University | Removal of paint from porous, smooth, and mineralogically fragile surfaces |
| CN112745992B (zh) * | 2020-12-31 | 2022-04-22 | 广东好顺欧迪斯科技股份有限公司 | 一种水性清洗剂、其制备方法及应用 |
| CN116262182B (zh) * | 2021-12-13 | 2025-08-15 | 中国石油天然气股份有限公司 | 一种胺液除泡装置及其除泡工艺 |
| CN116042323A (zh) * | 2022-10-25 | 2023-05-02 | 中国人民解放军军事科学院防化研究院 | 一种聚乙烯醇基泡沫凝胶表面去污材料 |
| CN119841435B (zh) * | 2025-02-21 | 2025-10-03 | 中国矿业大学 | 一种用于重有机污染物密度调控的自破乳胶态双液泡沫的制备方法和应用 |
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| US3007A (en) * | 1843-03-21 | Improvement in salt-boilers | ||
| GB1155552A (en) * | 1966-04-14 | 1969-06-18 | Geigy Uk Ltd | Cleaning and Anti-soiling Compositions |
| US4228048A (en) * | 1979-05-25 | 1980-10-14 | Chemed Corporation | Foam cleaner for food plants |
| DE3434817C2 (de) | 1984-03-02 | 1986-10-16 | Vorwerk & Co Interholding Gmbh, 5600 Wuppertal | Verfahren zur Herstellung eines Reinigungsmittels und Reinigungsmittel |
| JPS60238400A (ja) * | 1984-03-02 | 1985-11-27 | フオ−ルヴエルク・ウント・カンパニ−・インタホルデイング・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | 洗浄剤の製造方法 |
| JPH0415599A (ja) * | 1990-05-10 | 1992-01-20 | Mitsubishi Heavy Ind Ltd | ウラン水溶液中のセシウムの分離方法 |
| RU2035074C1 (ru) * | 1993-03-18 | 1995-05-10 | Татьяна Александровна Матковская | Средство для снятия загрязнений радиоактивными и токсичными металлами |
| FR2717709B1 (fr) * | 1994-03-22 | 1996-04-26 | Commissariat Energie Atomique | Gel capable de retenir une contamination radioactive et son utilisation pour protéger ou décontaminer une surface. |
| US5955414A (en) * | 1994-10-05 | 1999-09-21 | S. C. Johnson & Son, Inc. | Cleaning foam having fluorinated stain repellent and low flammability |
| FR2774994B1 (fr) | 1998-02-13 | 2000-05-05 | Rhodia Chimie Sa | Particules composites comprenant un coeur a base d'un polymere organique contenant une matiere active et un revetement externe a base d'au moins un oxyde et/ou un hydroxyde, leur procede de preparation et leurs utilisations |
| US6387870B1 (en) * | 1999-03-29 | 2002-05-14 | Ecolab Inc. | Solid pot and pan detergent |
| WO2002000820A1 (fr) * | 2000-06-23 | 2002-01-03 | Combe International Ltd. | Mousse stable pour produit d'essuyage jetable |
| FR2817170B1 (fr) | 2000-11-30 | 2003-01-03 | Commissariat Energie Atomique | Procede, module et dispositif de mise en contact d'un gaz et d'un liquide |
| US6586483B2 (en) * | 2001-01-08 | 2003-07-01 | 3M Innovative Properties Company | Foam including surface-modified nanoparticles |
| RU2191200C1 (ru) * | 2001-04-26 | 2002-10-20 | Степанов Игорь Константинович | Пенообразующий состав |
| WO2003014284A1 (fr) * | 2001-08-07 | 2003-02-20 | Fmc Corporation | Systemes de desinfection a retention elevee |
| US20030078180A1 (en) * | 2001-10-24 | 2003-04-24 | Benchmark Research & Technology, Inc. | Contaminant-tolerant foaming additive |
| FR2841802B1 (fr) | 2002-07-08 | 2005-03-04 | Commissariat Energie Atomique | Composition, mousse et procede de decontamination de surfaces |
-
2007
- 2007-02-15 FR FR0753286A patent/FR2912668B1/fr not_active Expired - Fee Related
-
2008
- 2008-02-14 RU RU2009134115/04A patent/RU2470068C2/ru not_active IP Right Cessation
- 2008-02-14 JP JP2009549830A patent/JP5663170B2/ja active Active
- 2008-02-14 ES ES08716848.0T patent/ES2525618T3/es active Active
- 2008-02-14 CN CN200880004303.3A patent/CN101605880B/zh active Active
- 2008-02-14 US US12/525,836 patent/US8772357B2/en active Active
- 2008-02-14 KR KR1020097018720A patent/KR101524655B1/ko not_active Expired - Fee Related
- 2008-02-14 CA CA2678112A patent/CA2678112C/fr not_active Expired - Fee Related
- 2008-02-14 WO PCT/EP2008/051792 patent/WO2008101855A1/fr not_active Ceased
- 2008-02-14 EP EP08716848.0A patent/EP2126023B1/fr active Active
-
2009
- 2009-07-31 ZA ZA200905366A patent/ZA200905366B/xx unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008101855A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008101855A1 (fr) | 2008-08-28 |
| ES2525618T3 (es) | 2014-12-26 |
| CN101605880A (zh) | 2009-12-16 |
| US20100069281A1 (en) | 2010-03-18 |
| KR101524655B1 (ko) | 2015-06-01 |
| ZA200905366B (en) | 2010-05-26 |
| CA2678112C (fr) | 2017-04-11 |
| CA2678112A1 (fr) | 2008-08-28 |
| JP5663170B2 (ja) | 2015-02-04 |
| US8772357B2 (en) | 2014-07-08 |
| FR2912668A1 (fr) | 2008-08-22 |
| CN101605880B (zh) | 2014-06-25 |
| FR2912668B1 (fr) | 2009-05-22 |
| RU2470068C2 (ru) | 2012-12-20 |
| JP2010518250A (ja) | 2010-05-27 |
| EP2126023B1 (fr) | 2014-08-27 |
| KR20090114441A (ko) | 2009-11-03 |
| RU2009134115A (ru) | 2011-03-20 |
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