WO2001056711A1 - Conduite comportant une paroi interieure ultraphobe - Google Patents

Conduite comportant une paroi interieure ultraphobe Download PDF

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Publication number
WO2001056711A1
WO2001056711A1 PCT/EP2001/000701 EP0100701W WO0156711A1 WO 2001056711 A1 WO2001056711 A1 WO 2001056711A1 EP 0100701 W EP0100701 W EP 0100701W WO 0156711 A1 WO0156711 A1 WO 0156711A1
Authority
WO
WIPO (PCT)
Prior art keywords
ultraphobic
coated
heat exchanger
pipe according
pipe
Prior art date
Application number
PCT/EP2001/000701
Other languages
German (de)
English (en)
Inventor
Karsten Reihs
Burkhard KÖHLER
Dieter RÜHLE
Juan GONZÁLEZ-BLANCO
Heiko Herold
Mathias Voetz
Original Assignee
Sunyx Surface Nanotechnologies Gmbh
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 Sunyx Surface Nanotechnologies Gmbh filed Critical Sunyx Surface Nanotechnologies Gmbh
Priority to AU2001228479A priority Critical patent/AU2001228479A1/en
Publication of WO2001056711A1 publication Critical patent/WO2001056711A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/02—Coatings; Surface treatments hydrophilic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/04—Coatings; Surface treatments hydrophobic

Definitions

  • the present invention relates to pipelines, in particular heat exchangers, which are provided or coated with an ultraphobic surface in order to reduce the flow resistance and to reduce deposits on their inner and / or outer wall.
  • Numerous fluid media e.g. Drinking water, waste water, oil or gas are transported over long distances in pipelines.
  • the media are pumped through the pipes, i.e. with the help of a pressure drop.
  • pump stages To compensate for the pressure loss that occurs in the flow of the medium due to friction losses on the inner surface of the pipes, pump stages must be provided repeatedly over long distances. However, each pressure generation stage required for this is energy-intensive.
  • the task is therefore to provide pipelines whose inner surface has a reduced flow resistance compared to the prior art.
  • Heat exchangers have the task of transferring heat from one medium to another medium without the two media mixing together. Accordingly, a heat exchanger has so-called heat exchanger surfaces, for example overflowed plates or pipes, on which the two media are each on one Flow past the side of the heat exchanger and through which the heat or cold is transferred from one medium to the other medium.
  • the media are, for example, cooling water, oil, gases or liquids from chemical productions of any kind.
  • Heat exchanger performance of the heat exchanger decreases.
  • the object is achieved according to the invention by the provision of a pipeline or a heat exchanger which is provided or coated with an ultraphobic surface on its overflowed inner wall and / or outer wall.
  • a pipeline in the sense of the invention is any arbitrarily shaped pipeline made of any material familiar to the person skilled in the art. Preferably there is
  • this pipeline in particular the heat exchanger, has an ultraphobic surface on its inside and / or outside.
  • An ultra-phobic surface in the sense of the invention is characterized in that the contact angle of a drop of water lying on the surface is significantly more than
  • the roll angle here is understood to be the angle of inclination of a basically planar, but structured surface against the horizontal, at which a standing
  • ultraphobic surfaces are e.g. in WO 98/23549, WO 96/04123, WO 96/21523 and in WO 96/34697, which are hereby introduced as a reference and are considered part of the disclosure.
  • the inside of the pipeline is preferably covered with an ultraphobic surface.
  • the ultraphobic surface as a modified tube or coating of the tube or heat exchanger, is based on an aluminum surface which is provided with microstructures (periodic structures with a depth of 1 to 1000 ⁇ m and intervals of 50 to 900 ⁇ m), then anodized, optionally with Hot water treated, calcined, optionally coated with an adhesive layer and then provided with a hydrophobic coating agent, as described in the unpublished German patent application with the file number 19860137.9.
  • the pipeline in particular the heat exchanger, can in particular be made entirely of aluminum or preferably has an aluminum inner and / or outer lining, the surface of the aluminum being treated as previously indicated.
  • the ultraphobic surface of the inner tube wall is an aluminum surface which is optionally anodically oxidized, treated with hot water or steam, optionally coated with an adhesion promoter layer and then provided with a hydrophobic coating agent, as described in the unpublished German patent application with the file number 19860138.7 is described.
  • the pipeline in particular the heat exchanger, can in particular be made entirely of aluminum, or preferably has an aluminum coating, the surface of the aluminum being treated as indicated above.
  • the ultraphobic surface of the pipe wall in particular of the heat exchanger, is a surface which is coated with Ni (OH) particles, optionally coated with an adhesion promoter and then with a hydrophobic coating agent is provided, as is described in the unpublished German patent application with the file number 19860139.5.
  • the Ni (OH) 2 particles preferably have a diameter d 50 of 0.5 to 20 ⁇ m.
  • the ultraphobic surface of the tube wall in particular the heat exchanger, is constructed from tungsten carbide, which is structured with a laser, optionally coated with an adhesion promoter and then provided with a hydrophobic coating agent, as described in the unpublished German patent application with the
  • the pipeline is preferably only coated with tungsten carbide, which is then treated as indicated above.
  • the tungsten carbide layer particularly preferably has a layer thickness of 10 to 500 ⁇ m.
  • the ultraphobic surface of the pipe wall can be produced by sandblasting the surface of the pipe with an abrasive, optionally with an adhesion promoter layer and then providing it with a hydrophobic coating agent, as described in the unpublished German patent application with the file number 19860140.9 ,
  • Surface-active compounds with any molar mass are to be regarded as a hydrophobic coating agent (phobicization aid). These compounds are preferably cationic, anionic, amophotere or nonionic surface-active compounds, as described, for example, in the “Surfactants Europe, A Dictionary of Surface Active Agents available in Europe, Edited by Gordon L. Hollis, Royal Socity of Chemistry, Cambridge , 1995 are listed.
  • anionic phobing aids alkyl sulfates, ether sulfates, ether carboxylates, phosphate esters, sulfosucinates, sulfosuccinatamides, paraffin sulfonates, olefin sulfonates, sarcosinates, isothionates, taurates and Lingnine compounds.
  • Quaternary alkylammonium compounds and imidazoles may be mentioned as cationic phobicization aids
  • Amphoteric phobicization aids are, for example, betaines, glycinates, propionates and imidazoles.
  • nonionic phobing aids examples include: alkoxylates, alkyloamides, esters, amine oxides and alkypolyglycosides. Also suitable are: reaction products of alkylene oxides with alkylatable compounds, such as. B. fatty alcohols, fatty amines, fatty acids, phenols, alkylphenols, arylalkylphenols, such as
  • Phobicization aids are particularly preferred in which 1-100%, particularly preferably 60-95%, of the hydrogen atoms are substituted by fluorine atoms.
  • Examples include perfluorinated alkyl sulfate, perfluorinated alkyl sulfonates, perfluorinated alkyl phosphonates, perfluorinated alkyl phosphinates and perfluorinated carboxylic acids.
  • polymeric phobicization aids for hydrophobic coating or as polymeric hydrophobic material for the surface.
  • These polymeric phobicization aids can be nonionic, anionic, cationic or amphoteric compounds.
  • these polymeric phobicization aids can be homopolymers and copolymers, graft and graft copolymers and random block polymers.
  • Particularly preferred polymerizing auxiliaries are those of the type AB, BAB and ABC block polymers.
  • the A segment is a hydrophilic homopolymer or copolymer
  • the B block is a hydrophobic homopolymer or copolymer or a salt thereof.
  • Anionic, polymeric phobicizing aids are also particularly preferred, in particular condensation products of aromatic sulfonic acids with formaldehyde and alkylnaphthalenesulfonic acids or from formaldehyde, naphthane sulfonic acids and / or benzenesulfonic acids, condensation products from optionally substituted phenol with formaldehyde and sodium bisulfite.
  • condensation products which can be obtained by reacting naphthols with alkanols, additions of alkylene oxide and at least partially converting the terminal hydroxyl groups into sulfo groups or half esters of maleic acid and phthalic acid or succinic acid.
  • the phobicization aid is from the group of the sulfosuccinic acid esters and alkylbenzenesulfonates.
  • Sulfated, alkoxylated fatty acids or their salts are also preferred.
  • Alkoxylated fatty acid alcohols are understood in particular to be those with 5 to 120, with 6 to 60, very particularly preferably with 7-30 ethylene oxide, C 6 -C -fatty acid alcohols which are saturated or unsaturated, in particular stearyl alcohol.
  • the sulfated alkoxylated fatty acid alcohols are preferably present as a salt, in particular as alkali or amine salts, preferably as a diethylamine salt.
  • Liquid media of any kind can be passed through the pipelines according to the invention, in particular heat exchangers.
  • the pipes according to the invention have a pressure drop that is up to 50% lower than pipes according to the prior art.
  • the tubes according to the invention are simple and inexpensive to manufacture.
  • the preferred heat exchangers can be installed in any type of heat exchanger system, which are also the subject of the invention. These heat exchangers are preferably used for heating calcareous water, liquids with suspended solids, liquids with dissolved ingredients that have a negative solution coefficient and / or sludge, preferably sewage sludge.
  • An epoxy-functional resin (KBD7142) was first produced to coat the inner diameter of a pipe (material: stainless steel V4a). For that, a mix was made
  • AIBN azobisisobutyronitrile
  • MIBK methyl isobutyl ketone
  • the layer thickness of the coating is approximately 50 ⁇ m.
  • the roll angle for water is ⁇ 5 °.
  • the flow resistance of this pipe was compared with the flow resistance of an uncoated pipe of the same dimensions.
  • the two pipes were each flanged to an opening near the floor in the lateral surface of a cylindrical plastic boiler (volume 100 l).
  • the kettle was filled with water and emptied over the test tube in a horizontal position. With the help of an overflow, a constantly high liquid level of 90 cm was set during emptying.
  • the escaping water is collected in another plastic kettle, the weight of which is determined with a balance during the discharge.
  • the coated test tube had an outflow time of 113 seconds per 100 liters of water. With the uncoated comparison pipe, it took 183 seconds to let 100 liters of water run out of the boiler.
  • Example 1 The same pipes (uncoated and coated pipes) as in Example 1 were tested in the test installation according to FIG. 1 under turbulent flow conditions.
  • the test facility has a storage tank filled with water, from which 2,000 l / h of water are pumped through the test section and back into the storage tank in a circle by means of a centrifugal pump.
  • the test section has a flow meter and a manometer for measuring the pressure loss, which at
  • the pipe to be tested was coated once as described in Example 1 and the uncoated pipe according to Example 1 in a comparison test.
  • An epoxy-functional resin (KBD7142) was first produced to coat the inner diameter of a copper tube in a tube bundle heat exchanger. For that, a mix was made
  • MIBK methyl isobutyl ketone
  • the KBD 7142 was then 1:50 dissolved in MIBK (methyl isobutyl ketone, 100 ml) and 1 g of Aerosil R 812 (Degussa, Hanau) was added.
  • MIBK methyl isobutyl ketone, 100 ml
  • Aerosil R 812 Degussa, Hanau
  • the tube was placed horizontally and slowly turned by hand (approx. 5 turns).
  • the tube was tilted to the left and right when turning.
  • the tube ends still immersed in the solution to coat the areas that were covered by the plugs.
  • the layer thickness of the coating is approximately 50 ⁇ m.
  • the roll angle for water is ⁇ 5 °.
  • the copper tube treated in this way was installed in a tube bundle heat exchanger, the tubes of which were heated by steam at a temperature of 110 ° C. from the outside. Water with 2% floating particles was pumped in a circle through the inside of the tubes of the tube bundle heat exchanger.
  • the heat exchanger was operated continuously for one month.
  • the tubes of the tube bundle heat exchanger were then removed, sawn and visually examined for deposits.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne des conduites, en particulier des échangeurs thermiques, pourvus ou revêtus d'une surface ultraphobe sur leur paroi intérieure et/ou extérieure afin de réduire la résistance à l'écoulement.
PCT/EP2001/000701 2000-02-03 2001-01-23 Conduite comportant une paroi interieure ultraphobe WO2001056711A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001228479A AU2001228479A1 (en) 2000-02-03 2001-01-23 Conduit with an ultraphobic inner wall

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10004724.6 2000-02-03
DE2000104724 DE10004724A1 (de) 2000-02-03 2000-02-03 Rohrleitung mit ultraphober Innenwand

Publications (1)

Publication Number Publication Date
WO2001056711A1 true WO2001056711A1 (fr) 2001-08-09

Family

ID=7629694

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/000701 WO2001056711A1 (fr) 2000-02-03 2001-01-23 Conduite comportant une paroi interieure ultraphobe

Country Status (3)

Country Link
AU (1) AU2001228479A1 (fr)
DE (1) DE10004724A1 (fr)
WO (1) WO2001056711A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184115A1 (fr) * 2008-11-10 2010-05-12 Siemens Aktiengesellschaft Revêtement hydrophobe de condensateurs en état intégré
DE102012109811A1 (de) * 2012-10-15 2014-04-17 Noatzke Verwaltungs GmbH Rohrkörper und Medien-Installationssystem mit derartigen Rohrkörpern
FR3139891A1 (fr) * 2022-09-19 2024-03-22 Valeo Systemes Thermiques Echangeur thermique pour véhicule automobile, avec moyens de perturbation du fluide dans les canaux d’écoulement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6845788B2 (en) * 2003-04-15 2005-01-25 Entegris, Inc. Fluid handling component with ultraphobic surfaces
DE102008064125A1 (de) * 2008-12-19 2010-06-24 Siemens Aktiengesellschaft Kondensatorrohr mit erhöhter Hydrophobie, Herstellungsverfahren und Verwendung dazu
DE102011086414A1 (de) * 2011-11-15 2013-05-16 BSH Bosch und Siemens Hausgeräte GmbH Wärmetauscher mit einer äußeren Oberfläche

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525425A (en) * 1981-05-11 1985-06-25 El-Chem Corporation Water and oil repellent metal oxide-organic combination coating systems and method of making same
WO1996004123A1 (fr) 1994-07-29 1996-02-15 Wilhelm Barthlott Surfaces autonettoyantes d'objets et leur procede de production
WO1996021523A1 (fr) 1995-01-11 1996-07-18 Kao Corporation Procede permettant de rendre hydrofuge une surface metallique et materiau metallique extremement hydrofuge
WO1996034697A1 (fr) 1995-05-04 1996-11-07 Minnesota Mining And Manufacturing Company Films nanostructures fonctionnalises
WO1998023549A1 (fr) 1996-11-26 1998-06-04 Saint-Gobain Vitrage Substrat a proprietes hydrophiles ou hydrophobes ameliorees, comportant des irregularites
WO1999010322A1 (fr) 1997-08-21 1999-03-04 Galderma Research & Development Composes bi-aromatiques relies par un radical heteroethynylene et compositions pharmaceutiques et cosmetiques les contenant
DE19860135A1 (de) * 1998-12-24 2000-06-29 Bayer Ag Verfahren zur Herstellung einer ultraphoben Oberfläche auf Basis von Wolframcarbid
WO2000039240A1 (fr) * 1998-12-24 2000-07-06 Sunyx Surface Nanotechnologies Gmbh Surface ultraphobe
WO2000039368A2 (fr) * 1998-12-24 2000-07-06 Bayer Aktiengesellschaft Procede pour produire une surface ultraphobe a base d'aluminium
WO2000038845A1 (fr) * 1998-12-24 2000-07-06 Sunyx Surface Nanotechnologies Gmbh Procede pour produire une surface ultraphobe par sablage

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525425A (en) * 1981-05-11 1985-06-25 El-Chem Corporation Water and oil repellent metal oxide-organic combination coating systems and method of making same
WO1996004123A1 (fr) 1994-07-29 1996-02-15 Wilhelm Barthlott Surfaces autonettoyantes d'objets et leur procede de production
WO1996021523A1 (fr) 1995-01-11 1996-07-18 Kao Corporation Procede permettant de rendre hydrofuge une surface metallique et materiau metallique extremement hydrofuge
WO1996034697A1 (fr) 1995-05-04 1996-11-07 Minnesota Mining And Manufacturing Company Films nanostructures fonctionnalises
WO1998023549A1 (fr) 1996-11-26 1998-06-04 Saint-Gobain Vitrage Substrat a proprietes hydrophiles ou hydrophobes ameliorees, comportant des irregularites
WO1999010322A1 (fr) 1997-08-21 1999-03-04 Galderma Research & Development Composes bi-aromatiques relies par un radical heteroethynylene et compositions pharmaceutiques et cosmetiques les contenant
DE19860135A1 (de) * 1998-12-24 2000-06-29 Bayer Ag Verfahren zur Herstellung einer ultraphoben Oberfläche auf Basis von Wolframcarbid
WO2000039240A1 (fr) * 1998-12-24 2000-07-06 Sunyx Surface Nanotechnologies Gmbh Surface ultraphobe
WO2000039368A2 (fr) * 1998-12-24 2000-07-06 Bayer Aktiengesellschaft Procede pour produire une surface ultraphobe a base d'aluminium
WO2000038845A1 (fr) * 1998-12-24 2000-07-06 Sunyx Surface Nanotechnologies Gmbh Procede pour produire une surface ultraphobe par sablage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Verzeichnis,,Surfactants Europa, A Dictionary of Surface Active Agents", 1995, GORDON L.HOLLIS, ROYAL SOCITY OF CHEMISTRY, CAMBRIDGE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184115A1 (fr) * 2008-11-10 2010-05-12 Siemens Aktiengesellschaft Revêtement hydrophobe de condensateurs en état intégré
CN101786060A (zh) * 2008-11-10 2010-07-28 西门子公司 给安装状态下的冷凝器涂装憎水的涂层
US8580351B2 (en) 2008-11-10 2013-11-12 Siemens Aktiengesellschaft Hydrophobic coating of condensers in the fitted state
DE102012109811A1 (de) * 2012-10-15 2014-04-17 Noatzke Verwaltungs GmbH Rohrkörper und Medien-Installationssystem mit derartigen Rohrkörpern
FR3139891A1 (fr) * 2022-09-19 2024-03-22 Valeo Systemes Thermiques Echangeur thermique pour véhicule automobile, avec moyens de perturbation du fluide dans les canaux d’écoulement

Also Published As

Publication number Publication date
AU2001228479A1 (en) 2001-08-14
DE10004724A1 (de) 2001-08-09

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