EP1993923B1 - Aus einem korrosionsfesten verbundstoff hergestellter tank - Google Patents

Aus einem korrosionsfesten verbundstoff hergestellter tank Download PDF

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Publication number
EP1993923B1
EP1993923B1 EP07718014A EP07718014A EP1993923B1 EP 1993923 B1 EP1993923 B1 EP 1993923B1 EP 07718014 A EP07718014 A EP 07718014A EP 07718014 A EP07718014 A EP 07718014A EP 1993923 B1 EP1993923 B1 EP 1993923B1
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EP
European Patent Office
Prior art keywords
polymeric compound
layer
tank
shell
intermediate layer
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.)
Not-in-force
Application number
EP07718014A
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English (en)
French (fr)
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EP1993923A2 (de
Inventor
Benoît LACAZE
Florian Puech
Cécile CANCES
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LACAZE ENERGIES
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LACAZE ENERGIES
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Publication of EP1993923A2 publication Critical patent/EP1993923A2/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/181—Construction of the tank
    • F24H1/183—Inner linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings

Definitions

  • the present invention belongs to the field of equipment intended to contain potentially corrosive fluids, especially intended for the production of hot water.
  • It relates to a vessel whose wall is made from a composite material comprising three associated layers, which ensures both the rigidity of the wall and its physical and chemical stability vis-à-vis a corrosive fluid or can be in certain conditions of use.
  • Another object of the invention is a method of manufacturing such a composite wall.
  • the balloons used to supply hot water to individual or collective equipment are generally made from a steel shell, covered with a thermal insulating material.
  • the internal surface must be treated to resist corrosion as the domestic hot water contains impurities and aggressive treatment products with respect to the steel, especially as the temperature is maintained at a high level to be distributed at 65 ° C. Not only does the installation deteriorate, which is a problem in itself, but also corrosion promotes biofouling by bacterial growth on the inner wall. It is obvious that the production of hot water, intended especially for food use, can not be subject to this kind of hazard.
  • the solution provided by the present invention is to coat the inner face of the tanks with a corrosion-resistant material, such as a plastic material.
  • a corrosion-resistant material such as a plastic material.
  • the walls of the tanks are commonly made of steel, a material that provides the rigidity and the necessary mechanical strength at a moderate cost price.
  • steel has no particular affinity for plastics, and on the other hand, it has a significant coefficient of expansion in the range of temperatures concerned, ranging from -20 ° C to 100 ° C during various handling, storage, transport and operation, while plastics have a very different coefficient of expansion.
  • the expansion can cause deviations of several millimeters, leading to the dissociation of the coating and the deterioration of the wall. It is therefore imperative to ensure a strong cohesion of the coating with the wall.
  • thermoplastic polymeric compounds can be used as anticorrosive inner lining of tanks, when they are applied to a metallized steel shell, i.e. the inner face of the shell has been spray-treated with a molten metal material, which has the effect of rendering the surface porous.
  • the coating technique used is inspired by well-known rotational molding techniques and brings an unexpected result. Indeed, the thermoplastic properties of many polymers are known and implemented to achieve all kinds of objects, by different molding techniques, and among them rotomolding.
  • This plastics transformation process is carried out in three stages: filling of a mold with a thermoplastic polymer in the form of granules or of powder, melting of the plastic material, then solidification. During cooling, the molded object retracts and unstands itself from the mold.
  • this phenomenon is totally contrary to the desired objective, which is to obtain a strong and durable adhesion of the plastic compound to the wall giving it its shape.
  • the pull-out tests that have been conducted by the inventors have shown that the coating carried out using the rotational molding technique of a thin layer of a thermoplastic polymer on a metallized surface, led to the desired result. .
  • the wall obtained, object of the present invention can be considered as a composite wall, and the new manufacturing process, also claimed as an object of the invention, can receive the name of "rotoenduction".
  • An object of the present invention is therefore to provide a tank useful for receiving corrosive liquids, for example for the production of hot water, the wall of which, while retaining its previous mechanical properties, is insensitive to chemical attack and more particularly to oxidation and chlorine.
  • Another object of the invention is to provide a vessel whose wall is resistant to stress due to thermal expansion.
  • Another object of the present invention is to provide a tank meeting the above requirements for periods of several years, and with a moderate manufacturing cost.
  • Another object of the invention is to provide a method of manufacturing said tanks which is reliable and easy to implement.
  • the present invention makes it possible to offer establishments such as hotels or hospital centers a means of distributing hot water in complete safety, without significant additional cost of equipment or operation.
  • the present invention relates to a vessel for containing a corrosive fluid, original in that it has a composite wall comprising a shell outer steel, a metal or ceramic interlayer, and an inner layer of a thermoplastic polymeric compound.
  • the outer shell is the element ensuring the mechanical strength of the composite wall. It gives its shape to the tank and also serves as a support for other layers. It is commonly made of steel. It is possible to use, for example, non-alloyed hot-rolled structural steels that meet the standards in force. Its thickness is chosen according to the operating pressure and the diameter of the tank, in accordance with the pressure vessel code and / or the regulations in force in the country of use. It can thus be between 2 mm and 15 mm, more frequently between 4 mm and 8 mm. Manufacturers of heating equipment are familiar with these standards and the qualities of steel to implement.
  • the surface of the part to be coated is previously prepared to remove oxides and calamines, increase its roughness and allow particles to anchor in the irregularities of the surface .
  • the method called impact treatment can be used. It consists in projecting a natural or artificial abrasive onto the surface to be treated. The projection can be done by compressed air, either by a vacuum system (suction, suction, Giffard effect), or by a direct pressure system (overpressure). Depending on the size of the abrasive particles we are talking about sanding (fine particles) or shot blasting (larger particles).
  • the depth of the roughness profile is between 5% and 25% of the thickness of the subsequent coating, with an optimum value around 25% which has the effect of increasing the contact area by a factor of 3 or 4.
  • the inner face of the steel shell advantageously has a roughness Ra corresponding to the mean arithmetic mean deviation from the mean line of the surface, between 10 ⁇ m and 35 ⁇ m, preferably from 10 ⁇ m to 35 ⁇ m. about 15 ⁇ m. It is completely covered by the intermediate layer which adheres to it by a mechanical phenomenon with a force which can vary from 20 to 115 MPa after sanding, according to the processes and the materials.
  • the intermediate layer of the wall according to the invention is a layer of metallic or ceramic nature. It can consist essentially of a metal chosen from aluminum, zinc, copper, tin, nickel, molibdenum, manganese, or an alloy based on metals selected from zinc, copper, nickel, tin.
  • the intermediate layer consists essentially of a ceramic chosen from nitrides such as NiAl, NiCrBSi, aluminides such as Al 2 O 3 , Al 2 O 3 -TiO 2 , or oxides such as Cr 2 O 3 , ZrO 2 -CaO.
  • a treatment with a supply of reactive gas may be used.
  • a substrate here the steel shell
  • the reactive chemical species metal or ceramic to be supplied
  • LCVD laser assisted chemical vapor deposition
  • the material to be deposited is in the form of powder, wire, cord or rod. It is melted totally or partially in a source of heat (flame, electric arc, plasma).
  • a carrier gas allows spraying the material, and transporting the droplets thus formed to the surface to be coated on which they solidify. The surface of the substrate does not undergo any fusion.
  • the intermediate layer is porous, the porosity coming either from microcavities due to imperfect stacking of the droplets, or gas locked during solidification.
  • the porosity rate varies according to the process and the materials used. Whatever the nature of the intermediate layer chosen, it advantageously has a porosity level of 0.1% to 25%, preferably between 5% and 10%.
  • the deposits include inclusions such as oxides or other materials from the torches themselves, unmelted or partially melted particles that have not undergone a complete heat cycle (because of their size or their heat source). Due to the very fast cooling rate of the particles in contact with the substrate, the presence of intragranular microcracks within the deposits is possible. Furthermore, since the projections are made in the air, the droplets and the substrate are subjected to the oxidation phenomenon. It is not uncommon to see an increase in the oxygen level during the projection. It should be emphasized here that the characteristics of the intermediate layer (metallic or ceramic) should have led the inventors to dismiss such a layer of the solution of the problem posed by the present invention. On the contrary, the invention has made it possible to use, in order to meet the desired objective of chemical stability with respect to corrosive fluids, its fixing properties of a polymeric coating.
  • the wall of the vessel may further comprise an underlayer hooking between the steel shell and the intermediate layer.
  • an undercoating layer is then used, which can be made of different materials, among which mention may be made of nickel aluminide, molibdene, or alloys of the NiCr (80/20) or MCrAlY (M designating Ni) type. , Co or NiCo). It can be applied by any technique available to those skilled in the art, and advantageously according to the same technique as that used for the metallization of the steel shell.
  • the wall of the tank according to the present invention comprises a third layer, the innermost, intended to be in contact with a corrosive fluid and thus to protect the outermost layers of chemical attack.
  • a thermoplastic polymer that is to say softenable by heating and hardening by cooling without chemical reaction.
  • compounds available in various forms, for example in the form of powders or granules, which can be conveniently used in plastics processes.
  • additives or technological aids such as a load up to 40% by weight (talc or calcium carbonate for example), reinforcing additives, for example fiberglass or mica at 20 to 30% by weight.
  • said polymeric compound comprises polar groups of electronegative character. It has indeed been observed that the choice of such polymers leads to an even stronger cohesion between the inner layer and the intermediate layer. These groups may be originally present in the chosen polymer or provided by a suitable chemical reaction, for example by functional grafting or by chemical modification of the polymer.
  • the polymeric compound used for the inner layer according to the invention may for example be selected from ethylene polymers, propylene polymers, fluorocarbon resins, polyoxymethylenes.
  • polyethylene taken from the numerous types existing, for example from low density polyethylenes (or LDPE) having a density of between 0.92 g / cm 3 and 0.94 g / cm 3 , or from polyethylenes. high density (HDPE), having a density of between 0.95 g / cm 3 and 0.97 g / cm 3 . It is also possible to use polypropylenes, those used in the industry being almost always isotactic. They are often associated with a copolymer.
  • LDPE low density polyethylenes
  • HDPE high density
  • polypropylenes those used in the industry being almost always isotactic. They are often associated with a copolymer.
  • the fluorocarbon resins of formula [-CH 2 -CF 2 -] n are also usable for producing the inner layer of the tank according to the invention.
  • the main fluorocarbon resins are PTFE (polytetrafluoroethylene), FEP (fluorinated ethylene-propylene), PFA (perfluoroalkoxy), PVDF (polyfluorovinylidene), ETFE (modified copolymer of ethylene and tetrafluoroethylene) and ECTFE (ethylene / chlorotrifluoroethylene).
  • POM polyoxymethylene
  • They are technical thermoplastics which are distinguished by a high tensile strength, even at temperatures of -40 ° C, a Young's modulus of the order of 2800 to 3600 MPa, a very good dimensional stability when hot.
  • polystyrene polypropylenes grafted with acrylic acid, maleic anhydride or styrene, polypropylenes crosslinked with silanes can be used which are thus functionalized as required.
  • This list is not exhaustive and concerns all thermoplastics, including graft thermoplastic sub-families.
  • the polymeric compound is a diacid modified polymer.
  • the polymeric compound may be a polypropylene modified with maleic anhydride.
  • the insertion rate of the anhydride unit may be higher or lower.
  • the polymeric compound is a polypropylene modified with 5% to 50% maleic anhydride, in mole. So particularly preferred, the polymeric compound is a polypropylene modified with 20% maleic anhydride, in mole.
  • the intermediate layer must have a thickness of between a few microns and 200 microns. According to the preferred embodiment of the present invention, its thickness is about 120 microns.
  • the tank according to the invention intended to contain a corrosive fluid, has a composite wall comprising an outer steel shell, an aluminum intermediate layer and an inner layer of polypropylene modified with maleic anhydride.
  • the tank according to the invention can be manufactured by any known method for the deposition of metal or ceramic layers on the one hand and polymer on the other hand.
  • a particularly suitable method has been developed for producing the composite wall as described above. In principle, it involves making the metal or ceramic deposition by the techniques commonly used for the manufacture of conventional metallized tanks, then to coat this surface by an original process, which we will call "rotoenduction".
  • the term "metallization” refers to the operation of depositing a metal or ceramic compound on the inner face of the steel shell, leading to the formation of the intermediate layer.
  • the term “metallized shell” means a steel tank whose inner face is covered with a metal or ceramic layer.
  • the deposition of the intermediate layer on the steel shell can be achieved by a technique known per se.
  • the flame-wire projection technique is preferred for the practice of the present invention.
  • the flame serves to melt the supplied material, which is introduced in the form of wire, cord, or rod at its center.
  • the filler material is then projected onto the surface of the shell by a stream of compressed air.
  • the wire drive can be driven by an automatically regulated electric motor, which allows a perfect regularity of wire feed.
  • the particle velocity is about 150 m / s and the distance between the nozzle and the substrate is between 100 mm and 200 mm.
  • the deposited thicknesses can range from a few tenths of a millimeter to a few millimeters, at very variable hourly rates depending on the materials, the wire diameters used, and the properties of deposits required: of 1 kg / h, for some ceramics prepared in the form of flexible cord or baguette, more than 30 kg / h for anticorrosive threads such as zinc.
  • the intermediate layer is formed by aluminum projection according to the flame-wire technique.
  • the steel shell before the metallization step, may be subjected to an impact treatment to increase its roughness.
  • This treatment consists in projecting a natural or artificial abrasive onto the surface to be treated.
  • the conditions of implementation are chosen easily by the person skilled in the art who already practices these techniques of sanding (fine particles) or blasting (larger particles).
  • a sub-layer of attachment is applied to the shell. It can be carried out according to the same process as that used for the deposition of the intermediate layer, with different materials, among which mention may be made of nickel aluminide, molibdene, or alloys of the NiCr type (80/20). ) or MCrAIY (M denoting Ni, Co or NiCo).
  • the third layer can be applied. This is to reproduce the inner shape of a cavity (the inner surface of the wall of the tank) which can range from one to 100,000 liters.
  • a cavity the inner surface of the wall of the tank
  • one proceeds in three phases, by analogy with discontinuous processes of plastics processing: filling the cavity, melting of the polymeric material, solidification of the polymeric material.
  • a first step after a possible preheating, the cavity is loaded with powder of polymer material, whose weight corresponds to that of the coating to be obtained.
  • the tank is then closed and is rotated by a mechanical system that allows it to rotate about two axes oriented differently, generally perpendicular to each other.
  • the tank rotating in all directions, is then heated to the temperature of good melting, the melting temperature of the thermoplastic polymers being generally between 150 ° C and 300 ° C.
  • the molten plastic powder flows by gravity on the walls.
  • the rotational speeds being low the effect of the centrifugal force is negligible.
  • the melting of the powdered polymeric compound is obtained by heating the metallized shell containing it by an external heating means.
  • the heat input is achieved by means of an oven, a gas ramp or infrared panels.
  • the heated tank transmits its heat to the powder whose grains melt and stick on the wall.
  • the thermoplastic whose temperature is above its melting point has a viscous consistency.
  • the device is removed from the oven and allowed to cool. Cooling can be accelerated by projecting fresh air and / or water mist onto the tank.
  • thermoplastic polymers can be used in the process as just described.
  • the polymers used in the process according to the invention are chosen from those which are implemented in the wall of the tank described above.
  • a particularly advantageous embodiment of the process according to the invention uses a powdered polymeric compound comprising polar groups of electronegative character.
  • the polymeric powder compound used in the process according to the invention may be chosen from ethylene polymers, propylene polymers, fluorocarbon resins, polyoxymethylenes.
  • said polymeric powder compound is a diacid modified polymer. More preferably, said polymeric powder compound is a polypropylene modified with maleic anhydride.
  • the tank as described and claimed in the present application may be manufactured by the method of the invention or by any other suitable method. It finds application in various industrial fields, such as the production of hot water, but also the industrial production of chemical or biological substances in reactors, or the road or rail transport of corrosive fluids.
  • the fluids used in these applications may be at low, medium to high temperatures and may be more or less aggressive.
  • the characteristics of the tank allow its use in all conditions without long term degradation.
  • another object of the present invention is a device for storing, transporting, storing or producing a corrosive fluid, comprising a composite wall vessel as described above. More particularly, is claimed a hot water production device comprising a composite wall vessel according to the invention.
  • This wall was made from a steel shell of unalloyed construction, complying with the European standard bearing the EN 10025: 1993 (symbolic designation: S235JR, numerical designation: 1.0037) and to the French standard N ° NF A 35-501 (designation: E 24-2), of thickness 3 mm, and forming a cylindrical tank with a volume of 50 liters.
  • the inner side has undergone impact treatment using a sandblaster equipped with a cylindrical nozzle projecting corundum with an air pressure of about 7 bars.
  • the projection angle is practically tangential to the surface (30 to 40 degrees).
  • the ambient temperature is at 20 ° C to avoid oxidation as much as possible.
  • the inner face of the steel shell has a Ra roughness of 15 microns, which represents 25% of the thickness of the intermediate layer which will now be deposited.
  • the intermediate layer is high purity aluminum (99.9%). It is deposited by thermal spraying using the flame-wire technique.
  • the spray gun used is automatically regulated.
  • the lead feed is driven by an electric motor at a fixed speed of one meter per minute. For both bottoms, the layer is applied manually.
  • the movements of the spray gun are automated and regulated by sensors.
  • the metallization is carried out at 20 ° C., in order to reduce the oxidation.
  • the aluminum layer thus deposited has a thickness of 120 ⁇ m with a porosity of 8%.
  • the inner layer of the wall consists of a polypropylene modified with maleic anhydride.
  • the degree of insertion of the anhydride unit is 20 mol%.
  • Such polypropylene modified with maleic anhydride is obtained by the known methods for producing the polymeric raw materials.
  • the tank is mounted on a mechanical system that allows it to rotate about two perpendicular axes.
  • the whole is introduced into an oven and is preheated to 220 ° C for 20 minutes.
  • 1.4 kg of modified polypropylene powder is introduced into the cavity of the tank and the tank is closed by quick couplings. It is set in motion and is maintained at a temperature of 220 ° C for 14 minutes.
  • the device is removed from the oven and fresh air is projected onto the tank until the temperature reaches 50 ° C.
  • cooling is continued to room temperature, at least two hours.
  • the polymeric layer thus obtained has a constant thickness of about 120 microns over the entire internal surface of the vessel.
  • the composite wall has been subjected to various tests to evaluate its performance. It has been found on the one hand that during temperature variations, the layers remain united even though their coefficient of expansion is different. This result is assumed to be the intermediate layer absorbs the differential expansion between the materials of the outer and inner layers of the wall.
  • Each test piece 1 consists of an aluminum metallized steel plate 2 covered with a layer 3 of polypropylene melt-modified in an oven at 220 ° C.
  • the specimen 1 is removed from the furnace and a second aluminum metallized steel plate 4 is deposited on its surface, identical to the previous one, and provided with a hook 5 placed perpendicularly to the plane of the test tube 1. Then the whole is put back into the oven for 14 minutes.
  • a sandwich structure is obtained with a polymeric layer 3 fixed to the two metal plates 2, 4.
  • the lower plate 2 has a dimension of 200 mm ⁇ 100 mm, it is further provided with mass suspension means, by example of rings 6, while the upper plate 4 has a surface of only 50 mm x 50 mm. Their thickness is about 3 mm, as well as that of the polymeric layer.
  • the polymer layer 3 is sliced in its thickness around the upper plate 4, so as to laterally isolate a polymeric coating sample 7 of 50 mm side centered on the axis of the hook 5.
  • the test piece 1 is suspended by the hook 5 and attaches loads to the rings 6, mass increasingly high (10 kg in 10 kg).
  • the mass needed to take off the sample 7 from at least one of the plates 2 or 4 is thus measured in less than one minute and the corresponding force, expressed in daNcm -2, is calculated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Coating By Spraying Or Casting (AREA)

Claims (25)

  1. Tank zum Beinhalten eines korrosiven Fluids,
    dadurch gekennzeichnet,
    dass er eine Verbundwand mit einem äußeren Stahlgehäuse, einer metallischen oder keramischen Zwischenschicht und einer inneren Schicht auf Basis einer polymeren thermoplastischen Verbindung, die in direktem Kontakt mit der Zwischenschicht steht, aufweist.
  2. Tank nach Anspruch 1,
    dadurch gekennzeichnet,
    dass die innere Schicht im Wesentlichen eine polymere Verbindung enthält, die polare elektronegative Gruppen aufweist.
  3. Tank nach Anspruch 1 oder 2,
    dadurch gekennzeichnet,
    dass die polymere Verbindung ausgewählt ist aus Polyethylenen, Polypropylenen, fluorierten Kohlenwasserstoffharzen, Polyoxymethylen.
  4. Tank nach Anspruch 2,
    dadurch gekennzeichnet,
    dass die polymere Verbindung ein Polymer ist, das durch eine zweiwertige Säure derivatisiert ist.
  5. Tank nach Anspruch 4,
    dadurch gekennzeichnet,
    dass die polymere Verbindung ein Polypropylen ist, das durch Maleinsäureanhydrid derivatisiert ist.
  6. Tank nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet,
    dass die polymere Verbindung ein Polypropylen ist, das durch 5 Mol-% bis 50 Mol-% Maleinsäureanhydrid derivatisiert ist.
  7. Tank nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet,
    dass die polymere Verbindung ein Polypropylen ist, das durch 20 Mol-% Maleinsäureanhydrid derivatisiert ist.
  8. Tank nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet,
    dass die Zwischenschicht im Wesentlichen aus einem Metall gebildet ist, das ausgewählt ist aus Aluminium, Zink, Kupfer, Zinn, Nickel, Molybdän, Mangan oder aus einer Legierung auf Grundlage der Metalle, die ausgewählt sind aus Zink, Kupfer, Nickel, Zinn.
  9. Tank nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet,
    dass die Zwischenschicht im Wesentlichen aus einer Keramik gebildet ist, die ausgewählt ist aus NiAl, NiCrBSi, Al2O3, Al2O3-TiO2, Cr2O3, ZrO2-CaO.
  10. Tank nach Anspruch 8 oder 9,
    dadurch gekennzeichnet,
    dass die Zwischenschicht einen Porositätsgrad von 0, 1 % bis 25%, bevorzugt von 5% bis 10% aufweist.
  11. Tank nach einem der vorstehenden Ansprüche,
    dadurch gekennzeichnet,
    dass die innere Seite des Stahlgehäuses eine Rauigkeit zwischen 10 und 35 µm, bevorzugt von 15 µm aufweist.
  12. Tank nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet,
    dass er eine Verbindungsunterschicht zwischen dem Stahlgehäuse und der Zwischenschicht aufweist.
  13. Tank zum Beinhalten eines wasserhaltigen Fluids nach Anspruch 1,
    dadurch gekennzeichnet,
    dass er eine Verbundwand aufweist, die ein äußeres Stahlgehäuse, eine Zwischenschicht aus Aluminium und eine innere Schicht aus Polypropylen, das durch Maleinsäureanhydrid derivatisiert ist, enthält.
  14. Verfahren zur Herstellung eines Tanks zum Beinhalten eines korrosiven Fluids, der eine Verbundwand mit einem äußeren Stahlgehäuse, einer metallischen oder keramischen Zwischenschicht und eine innere Schicht auf Grundlage einer polymeren thermoplastischen Verbindung aufweist,
    dadurch gekennzeichnet,
    dass es im Wesentlichen die folgenden aufeinander folgenden Schritte aufweist:
    - einen Metallisierungsschritt bestehend aus dem Abscheiden einer metallischen oder keramischen Verbindung auf die innere Seite des Stahlgehäuses zum Bilden der Zwischenschicht, und
    - einem Beschichtungsschritt bestehend aus:
    - Einführen einer polymeren Verbindung in Pulverform in das metallisierte Gehäuse, die an einem zweiachsigen Rotationssystem befestigt ist,
    - Versetzen des metallisierten Gehäuses, das die polymere Verbindung in Pulverform enthält, in eine zweiachsige Rotation und Erwärmen auf eine Temperatur, die gleich oder höher ist als die Schmelztemperatur der polymeren Verbindung, bis zur Bildung einer kontinuierlichen polymeren Schicht,
    - Abkühlen nach der Rotation bis zur Verfestigung der polymeren Schicht.
  15. Verfahren nach Anspruch 14,
    dadurch gekennzeichnet,
    dass die Zwischenschicht durch thermisches Spritzen i) eines Metalls, ausgewählt aus Aluminium, Zink, Kupfer, Zinn, Nickel, Molybdän, Mangan; oder ii) einer Legierung auf Grundlage der Metalle, die ausgewählt sind aus Zink, Kupfer, Nickel, Zinn; oder iii) einer Keramik, die ausgewählt ist aus NiAl, NiCrBSi, Al2O3, Al2O3-TiO2, Cr2O3, ZrO2-CaO, gebildet wird.
  16. Verfahren nach Anspruch 15,
    dadurch gekennzeichnet,
    dass die Zwischenschicht durch Spritzen von Aluminium nach der Flammdrahttechnik gebildet wird.
  17. Verfahren nach einem der Ansprüche 14 bis 16,
    dadurch gekennzeichnet,
    dass vor dem Metallisierungsschritt das Stahlgehäuse einer Schlagbehandlung unterzogen wird, um dessen Rauigkeit zu erhöhen.
  18. Verfahren nach einem der Ansprüche 14 bis 17,
    dadurch gekennzeichnet,
    dass vor dem Metallisierungsschritt eine Verbindungsunterschicht auf das Gehäuse aufgetragen wird.
  19. Verfahren nach einem der Ansprüche 14 bis 18,
    dadurch gekennzeichnet,
    dass das Schmelzen der polymeren Verbindung in Pulverform durch Erwärmen des sie enthaltenden, metallischen Gehäuses mittels äußerer Erwärmung erreicht wird.
  20. Verfahren nach einem der Ansprüche 14 bis 19,
    dadurch gekennzeichnet,
    dass die polymere Verbindung in Pulverform polare, elektronegative Gruppen aufweist.
  21. Verfahren nach einem der Ansprüche 14 bis 20,
    dadurch gekennzeichnet,
    dass die polymere Verbindung in Pulverform ausgewählt ist aus Polyethylenen, Polypropylenen, fluorierten Kohlenwasserstoffharzen, Polyoxymethylenen.
  22. Verfahren nach einem der Ansprüche 14 bis 20,
    dadurch gekennzeichnet,
    dass die polymere Verbindung in Pulverform ein Polymer ist, das durch eine zweiwertige Säure derivatisiert ist.
  23. Verfahren nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet,
    dass die polymere Verbindung in Pulverform ein Polypropylen ist, das durch Maleinsäureanhydrid derivatisiert ist.
  24. Vorrichtung zum Lagern, Transportieren, Speichern oder Produzieren eines korrosiven Fluids,
    dadurch gekennzeichnet,
    dass sie einen Tank nach einem der Ansprüche 1 bis 13 aufweist.
  25. Vorrichtung zum Erzeugen von Warmwasser mit einem Tank nach einem der Ansprüche 1 bis 13.
EP07718014A 2006-01-20 2007-01-19 Aus einem korrosionsfesten verbundstoff hergestellter tank Not-in-force EP1993923B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0600506A FR2896489B1 (fr) 2006-01-20 2006-01-20 Cuve en materiau composite resistant a la corrosion
PCT/FR2007/000098 WO2007083029A2 (fr) 2006-01-20 2007-01-19 Cuve en matériau composite résistant à la corrosion

Publications (2)

Publication Number Publication Date
EP1993923A2 EP1993923A2 (de) 2008-11-26
EP1993923B1 true EP1993923B1 (de) 2009-06-24

Family

ID=37027870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07718014A Not-in-force EP1993923B1 (de) 2006-01-20 2007-01-19 Aus einem korrosionsfesten verbundstoff hergestellter tank

Country Status (8)

Country Link
EP (1) EP1993923B1 (de)
CN (1) CN101389539A (de)
AT (1) ATE434572T1 (de)
DE (1) DE602007001390D1 (de)
FR (1) FR2896489B1 (de)
MA (1) MA30215B1 (de)
TN (1) TNSN08307A1 (de)
WO (1) WO2007083029A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140215970A1 (en) * 2013-02-04 2014-08-07 Honeywell International Inc. METHODS OF HANDLING CHLORINATED COMPOUNDS USED FOR MANUFACTURING HFO-1234yf
CN110465462A (zh) * 2019-07-09 2019-11-19 马鞍山市天鑫辊业有限责任公司 涂层辊的制造方法
CN115014551A (zh) * 2022-06-14 2022-09-06 华夏磁电子技术开发(深圳)有限公司 一种温度传感器及其制作方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1406942A (en) * 1973-02-26 1975-09-17 Eastman Kodak Co Graft copolymers
US4358493A (en) * 1981-01-29 1982-11-09 Toyo Ink Manufacturing Co., Ltd. Cans
FR2551424B1 (fr) * 1983-09-01 1985-10-18 Schneider Ind S I Reservoir ferme, notamment d'un chauffe-eau a protection interne, et procede pour la realisation de cette protection
JPH05261858A (ja) * 1992-03-23 1993-10-12 Nippon Steel Corp ポリオレフィン被覆鋼材

Also Published As

Publication number Publication date
FR2896489B1 (fr) 2008-04-25
WO2007083029A2 (fr) 2007-07-26
MA30215B1 (fr) 2009-02-02
CN101389539A (zh) 2009-03-18
WO2007083029A3 (fr) 2007-09-27
FR2896489A1 (fr) 2007-07-27
DE602007001390D1 (de) 2009-08-06
EP1993923A2 (de) 2008-11-26
TNSN08307A1 (fr) 2009-12-29
ATE434572T1 (de) 2009-07-15

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