EP2424958A2 - Filter device for purifying fluids - Google Patents

Filter device for purifying fluids

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Publication number
EP2424958A2
EP2424958A2 EP10715708A EP10715708A EP2424958A2 EP 2424958 A2 EP2424958 A2 EP 2424958A2 EP 10715708 A EP10715708 A EP 10715708A EP 10715708 A EP10715708 A EP 10715708A EP 2424958 A2 EP2424958 A2 EP 2424958A2
Authority
EP
European Patent Office
Prior art keywords
filter
filter device
catalyst
electrolysis
hydroxyl radicals
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
Application number
EP10715708A
Other languages
German (de)
French (fr)
Other versions
EP2424958B1 (en
Inventor
Richard Eberle
Markus Dewes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydac Filtertechnik GmbH
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Hydac Filtertechnik GmbH
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Publication date
Application filed by Hydac Filtertechnik GmbH filed Critical Hydac Filtertechnik GmbH
Publication of EP2424958A2 publication Critical patent/EP2424958A2/en
Application granted granted Critical
Publication of EP2424958B1 publication Critical patent/EP2424958B1/en
Active legal-status Critical Current
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
    • C10G31/09—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by filtration
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G27/00—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G32/00—Refining of hydrocarbon oils by electric or magnetic means, by irradiation, or by using microorganisms
    • C10G32/02—Refining of hydrocarbon oils by electric or magnetic means, by irradiation, or by using microorganisms by electric or magnetic means
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20—Characteristics of the feedstock or the products
    • C10G2300/201—Impurities

Definitions

  • the invention relates to a filter device for cleaning fluids, in particular fuels that are contaminated with organic ingredients.
  • the replacement intervals of filter arrangements generally depend on the flow resistance generated by the respective filter arrangement. With increasing dirt loading of the filter, the differential pressure formed on the filter medium and thus the flow resistance increases.
  • the invention has the object to provide a filter device for cleaning fluids, in particular of fuels, which, although simple and economical is operable, long service lives related filter media allows the filter device.
  • a significant feature of the invention is that a separation device is provided which separates the water molecules contained in the relevant fluid, in particular the fuel, in such a way that hydroxyl radicals are formed. Since hydroxyl radicals are chemically highly reactive oxidants, organic substances are oxidized by contact with hydroxy I radicals as far as possible.
  • the arrangement is preferably such that the separation device has hydroxyl radical-forming, catalyst-acting media and / or an electrolysis device.
  • titanium dioxide serving as catalyst is particularly advantageously provided on or in the filter medium of a filter element associated with the filter device.
  • the arrangement can advantageously be made so that titanium dioxide is applied as a layer on the filter medium.
  • the effectiveness of the catalyst can be enhanced in a simple and advantageous manner by making the arrangement such that the catalyst can be exposed to light radiation, in particular in the wavelength range from 180 to 300 nm.
  • the filter device has a housing part which forms a window for a radiation entry of natural light or light generated by an artificial radiation source to the catalyst on the filter medium.
  • a radiation source can be provided within the housing part.
  • the arrangement may be such that the electrolysis device has at least one diamond electrode which acts anodically in the electrolysis within a housing part accommodating a filter element.
  • the diamond electrode may be formed on an end cap of the filter element.
  • electrically conductive in particular made of stainless steel components of the filter medium or other parts of the filter element may be provided as the cathode of the electrolysis device.
  • FIG. 1 shows an embodiment of the device according to the invention with a catalytically operating separating device in a schematic and merely simplified manner in the manner of a symbol sketch, with two alternative possibilities of the invention
  • FIG. 2 is a perspective view, partly in section, of a filter element for an exemplary embodiment of the invention, in which an electrolytic separation device is provided.
  • Fig. 1 is a merely symbolically indicated filter device as a whole with 2, to the housing 4, a fuel supply line 6 and a fuel drain line 8 are connected.
  • a filter medium 10 In the housing 4 is a filter medium 10.
  • the filter medium 10 To separate the water into hydrogen and hydroxyl radicals, the filter medium 10 is provided with a layer of titanium dioxide acting as a catalyst.
  • the supply of electromagnetic radiation is provided, in the present case in a wavelength range of 180 to 300 nm.
  • Fig. 1 two alternative ways of supplying radiation are indicated.
  • only one light source 7 is indicated in the drawing, several light sources may be provided in a suitable arrangement and of any construction, for example one or more LEDs.
  • a radiation-permeable wall part is provided on the filter housing 4, which forms a preferably UV-transparent window through which the titanium dioxide can be irradiated by means of an external light source 9.
  • This external light source 9 can be formed by natural light or, as in the internal light source 7, by a lamp or multiple lamps of any design and radiating body of any kind, preferably also by LEDs.
  • the filter element 1 shown in Fig. 2 comprises a filter medium 10 which extends between two end caps 12, 14 which are each connected to an assignable end portion 16, 18 of the Filterrnedium 10, wherein between the end portion 16 and the end cap 12 a one type of insulating layer forming adhesive bed 26 is located, while the other end portion 18 of the filter medium 10 to the inner side of the lower end cap 14 is fluid-permeable.
  • the filter medium 10 is supported on the inner circumference of a support tube 20.
  • the lower end cap 14 forms an anodically effective diamond electrode 22 on its inner side.
  • This is a crystalline diamond layer only a few nanometers thick on the electrically conductive end cap 14, wherein the diamond is rendered electrically conductive by doping with the element boron ,
  • the filter medium 10 which has a multilayer structure in the manner of a filter mat, for example, to provide a grid layer made of stainless steel.

Abstract

The invention relates to a filter device for purifying fluids, especially fuels, that are contaminated with organic substances. Said filter device is characterised in that hydroxyl radicals are formed from water molecules contained in the fluids, by means of a separating device (10, 14, 22), said hydroxyl radicals oxidising the impurities, especially organic substances, as much as possible, and converting them into compounds such as CO2.

Description

Filtervorrichtung zum Reinigen von Fluiden Filter device for cleaning fluids
Die Erfindung betrifft eine Filtervorrichtung zum Reinigen von Fluiden, insbesondere von Kraftstoffen, die mit organischen Inhaltsstoffen verunreinigt sind.The invention relates to a filter device for cleaning fluids, in particular fuels that are contaminated with organic ingredients.
Um die Betriebssicherheit von mit flüssigen Kraftstoffen zu versorgenden Antriebseinheiten, wie insbesondere Verbrennungsmotoren, sicherzustellen, ist eine Reinigung der Kraftstoffe unumgänglich. Insbesondere müssen, um das empfindliche Einspritzsystem vor Beschädigungen zu schützen, aus Dieselkraftstoffen, die außer mit mitgeführten Wasseranteilen häufig auch mit organischen Stoffen und Partikeln verunreinigt sind, mittels zugeordneter Filteranordnungen organische Stoffe und Partikel abgeschieden werden, die als Schmutzbeladung innerhalb der betreffenden Filteranordnung verbleiben.In order to ensure the operational safety of fuel units to be supplied with liquid fuels, in particular internal combustion engines, cleaning of the fuels is unavoidable. In particular, in order to protect the sensitive injection system from damage, from diesel fuels which are often contaminated with organic substances and particles in addition to entrained water, organic substances and particles are deposited by means of associated filter arrangements, which remain as dirt loading within the filter assembly in question.
Die Wechselintervalle von Filteranordnungen hängen in der Regel von dem von der betreffenden Filteranordnung erzeugten Strömungswiderstand ab. Mit zunehmender Schmutzbeladung des Filters steigt der am Filtermedium gebildete Differenzdruck und damit der Strömungswiderstand.The replacement intervals of filter arrangements generally depend on the flow resistance generated by the respective filter arrangement. With increasing dirt loading of the filter, the differential pressure formed on the filter medium and thus the flow resistance increases.
Im Hinblick auf diese Problematik stellt sich die Erfindung die Aufgabe, eine Filtervorrichtung zum Reinigen von Fluiden, insbesondere von Kraftstoffen zur Verfügung zu stellen, die, obgleich sie einfach und wirtschaftlich betreibbar ist, lange Standzeiten betreffender Filtermedien der Filtervorrichtung ermöglicht.In view of this problem, the invention has the object to provide a filter device for cleaning fluids, in particular of fuels, which, although simple and economical is operable, long service lives related filter media allows the filter device.
Erfindungsgemäß ist diese Aufgabe durch eine Filtervorrichtung gelöst, die die Merkmale des Patentanspruches 1 in seiner Gesamtheit aufweist.According to the invention this object is achieved by a filter device having the features of claim 1 in its entirety.
Demgemäss besteht eine wesentliche Besonderheit der Erfindung darin, dass eine Auftrenneinrichtung vorgesehen ist, die die im betreffenden Fluid, insbesondere dem Kraftstoff, enthaltenen Wasserrnoleküle derart auftrennt, dass Hydroxylradikale gebildet werden. Da Hydroxylradikale chemisch hochreaktive Oxydantien sind, werden organische Stoffe durch Kontakt mit Hydroxy I radikalen weitestgehend aufoxydiert.Accordingly, a significant feature of the invention is that a separation device is provided which separates the water molecules contained in the relevant fluid, in particular the fuel, in such a way that hydroxyl radicals are formed. Since hydroxyl radicals are chemically highly reactive oxidants, organic substances are oxidized by contact with hydroxy I radicals as far as possible.
Während organische Stoffe in Partikelform einen hohen Strömungswider- stand in Filtervorrichtungen verursachen, ist dies bei den durch das Aufoxydieren gebildeten Oxyden, beispielsweise CO2, nicht der Fall. Dieses Phänomen ist beispielsweise bei Russpartikelfilter im Abgasstrang von Verbrennungsmotoren bekannt. Hier wird eine Oxydation zu Asche durch Regenerierung des Filters, im Allgemeinen durch Hitzezufuhr, eingeleitet, um diese Partikel zu Asche und CO2 zu veraschen. In ähnlicher Weise sieht die Erfindung bei Fluidfiltervorrichtungen eine „kalte" Oxydation mittels Hydro- xylradikalen vor. Im Ergebnis ist eine Reinigungsvorrichtung geschaffen, die sich durch ein wirtschaftliches Betriebsverhalten auszeichnet, insbesondere im Hinblick auf die Verringerung von Filterwechselintervallen.While organics in particulate form cause high flow resistance in filter devices, this is not the case with the oxides formed by the oxidation, for example CO2. This phenomenon is known, for example, in soot particle filters in the exhaust system of internal combustion engines. Here, oxidation to ashes is initiated by regeneration of the filter, generally by heat, to ash these particles to ash and CO2. Similarly, with fluid filter devices, the invention provides for "cold" oxidation by means of hydroxyl radicals, as a result of which a cleaning device is provided which is characterized by an economical operating behavior, in particular with regard to the reduction of filter replacement intervals.
Hinsichtlich der Erzeugung der Hydroxylradikale ist die Anordnung vorzugsweise so getroffen, dass die Auftrenneinrichtung Hydroxylradikale bildende, als Katalysator wirkende Medien und/oder eine Elektrolysiereinrich- tung aufweist. Bei katalytisch arbeitender Auftrenneinrichtung ist mit besonderem Vorteil als Katalysator dienendes Titandioxid am oder im Filtermedium eines der Filtervorrichtung zugehörigen Filterelementes vorgesehen.With regard to the generation of the hydroxyl radicals, the arrangement is preferably such that the separation device has hydroxyl radical-forming, catalyst-acting media and / or an electrolysis device. In the case of a catalytically operating separation device, titanium dioxide serving as catalyst is particularly advantageously provided on or in the filter medium of a filter element associated with the filter device.
Dabei kann die Anordnung vorteilhaft so getroffen sein, dass Titandioxid als Schicht auf dem Filtermedium aufgebracht ist.In this case, the arrangement can advantageously be made so that titanium dioxide is applied as a layer on the filter medium.
Die Wirksamkeit des Katalysators lässt sich auf einfache und vorteilhafte Weise dadurch verstärken, dass die Anordnung so getroffen ist, dass der Katalysator mit einer Lichtstrahlung, insbesondere im Wellenlängenbereich von 180 bis 300 nm, beaufschlagbar ist.The effectiveness of the catalyst can be enhanced in a simple and advantageous manner by making the arrangement such that the catalyst can be exposed to light radiation, in particular in the wavelength range from 180 to 300 nm.
Diesbezüglich kann so vorgegangen werden, dass die Filtervorrichtung ein Gehäuseteil aufweist, das ein Fenster für einen Strahlungseintritt von natür- lichem Licht oder durch eine künstliche Strahlungsquelle erzeugtem Licht zum Katalysator am Filtermedium bildet.In this regard, it is possible to proceed in such a way that the filter device has a housing part which forms a window for a radiation entry of natural light or light generated by an artificial radiation source to the catalyst on the filter medium.
Alternativ kann bei einem strahlungsdicht abgeschlossenen Gehäuseteil der Filtervorrichtung eine Strahlungsquelle innerhalb des Gehäuseteiles vorge- sehen sein.Alternatively, in the case of a radiation-tightly sealed housing part of the filter device, a radiation source can be provided within the housing part.
Bei einer elektrolytisch arbeitenden Auftrenneinrichtung kann die Anordnung so getroffen sein, dass die Elektrolysiereinrichtung mindestens eine bei der Elektrolyse anodisch wirkende Diamantelektrode innerhalb eines ein Filterelement aufnehmenden Gehäuseteiles aufweist.In the case of an electrolytically operating severing device, the arrangement may be such that the electrolysis device has at least one diamond electrode which acts anodically in the electrolysis within a housing part accommodating a filter element.
Bei vorteilhaften Ausführungsbeispielen kann die Diamantelektrode an einer Endkappe des Filterelementes gebildet sein.In advantageous embodiments, the diamond electrode may be formed on an end cap of the filter element.
Zur Vervollständigung der Elektrolysiereinrichtung können elektrisch leitfähige, insbesondere aus Edelstahl gebildete Bestandteile des Filtermediums oder anderer Teile des Filterelementes als Kathode der Elektrolysiereinrich- tung vorgesehen sein.To complete the electrolysis can electrically conductive, in particular made of stainless steel components of the filter medium or other parts of the filter element may be provided as the cathode of the electrolysis device.
Hinsichtlich der Kontaktierung der anodisch und kathodisch wirksamen Elektroden für den Anschluss einer die Elektrolyse bewirkenden Gleichspannungsquelle kann von der im Dokument DE 10 2004 005 202 A1 aufgezeigten Technik Gebrauch gemacht werden.With regard to the contacting of the anodically and cathodically active electrodes for the connection of a DC voltage source causing the electrolysis, use can be made of the technique disclosed in the document DE 10 2004 005 202 A1.
Nachstehend ist die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen im Einzelnen erläutert. Es zeigen:The invention with reference to embodiments shown in the drawings will be explained in detail. Show it:
Fig. 1 in schematischer und lediglich in der Art einer Symbolskizze vereinfachter Darstellung ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung mit katalytisch arbeitender Auf- trenneinrichtung, wobei zwei alternative Möglichkeiten der1 shows an embodiment of the device according to the invention with a catalytically operating separating device in a schematic and merely simplified manner in the manner of a symbol sketch, with two alternative possibilities of the invention
Zufuhr einer Lichtstrahlung angedeutet sind, undSupply of a light radiation are indicated, and
Fig. 2 eine teils aufgeschnitten gezeichnete perspektivische Ansicht eines Filterelementes für ein Ausführungsbeispiel der Erfindung, bei dem eine elektrolytische Auftrenneinrichtung vor- gesehen ist.FIG. 2 is a perspective view, partly in section, of a filter element for an exemplary embodiment of the invention, in which an electrolytic separation device is provided.
Während bei der Elektrolyse von Wasser dieses üblicherweise in Wasserstoff und Sauerstoff gespalten wird, lässt sich mittels spezieller Elektroden, beispielsweise mittels einer anodisch wirksamen Diarnantelektrode, die durch eine Dotierung mit dem Element Bor elektrisch leitfähig ist, eine spezielle Wasserzersetzung erreichen, bei der anstelle von Sauerstoff und Wasserstoff hochreaktive Hydroxyl radikale gebildet werden. Anstelle der Auftrennung mittels einer Elektrolysiereinrichtung lassen sich Hydroxylradikale jedoch auch mittels eines mit den mitgeführten Wassermolekülen in Kontakt stehenden Katalysators erzeugen, wofür sich Titandioxid sehr gut eig- net. Anhand der Fig. 1 ist die Erfindung anhand eines Beispieles erläutert, bei dem das Auftrennen der Wassermoleküle mit dem durch Titandioxid gebildeten Katalysator erfolgt.Whereas in the electrolysis of water this is usually split into hydrogen and oxygen, special water-decomposition can be achieved by means of special electrodes, for example by means of an anodically active diamond electrode which is electrically conductive by doping with the element boron, in which instead of oxygen and hydrogen highly reactive hydroxyl radicals are formed. Instead of separation by means of an electrolysis device, however, hydroxyl radicals can also be produced by means of a catalyst in contact with the entrained water molecules, for which titanium dioxide is very well suited. net. 1, the invention is explained with reference to an example in which the separation of the water molecules takes place with the catalyst formed by titanium dioxide.
Diesbezüglich ist in der Fig. 1 eine lediglich symbolartig angedeutete Filtervorrichtung als Ganzes mit 2 bezeichnet, an deren Gehäuse 4 eine Kraftstoffzulaufleitung 6 und eine Kraftstoffablaufleitung 8 angeschlossen sind. Im Gehäuse 4 befindet sich ein Filtermedium 10. Zum Auftrennen des Wassers in Wasserstoff und Hydroxylradikale ist das Filtermedium 10 mit einer Schicht aus als Katalysator wirkendem Titandioxid versehen.In this regard, in Fig. 1 is a merely symbolically indicated filter device as a whole with 2, to the housing 4, a fuel supply line 6 and a fuel drain line 8 are connected. In the housing 4 is a filter medium 10. To separate the water into hydrogen and hydroxyl radicals, the filter medium 10 is provided with a layer of titanium dioxide acting as a catalyst.
Um die katalytische Wirkung des im Filtergehäuse 4 befindlichen Titandioxids und die Bildung der Hydroxylradikale zu verstärken, ist die Zufuhr elektromagnetischer Strahlung vorgesehen, im vorliegenden Fall in einem Wellenlängenbereich von 180 bis 300nm. In der Fig. 1 sind zwei alternative Möglichkeiten der Strahlungszufuhr angedeutet. In einem Fall befindet sich innerhalb des Filtergehäuses 4 eine Lichtquelle 7. Obwohl lediglich eine Lichtquelle 7 zeichnerisch angedeutet ist, können mehrere Lichtquellen in geeigneter Anordnung und von beliebiger Bauweise vorgesehen sein, beispielsweise eine oder mehrere LED's.In order to increase the catalytic effect of the titanium dioxide present in the filter housing 4 and the formation of the hydroxyl radicals, the supply of electromagnetic radiation is provided, in the present case in a wavelength range of 180 to 300 nm. In Fig. 1, two alternative ways of supplying radiation are indicated. In one case, there is a light source 7 within the filter housing 4. Although only one light source 7 is indicated in the drawing, several light sources may be provided in a suitable arrangement and of any construction, for example one or more LEDs.
Bei der alternativen Ausführungsform ist am Filtergehäuse 4 ein strahlungsdurchlässiges Wandteil vorgesehen, das ein vorzugsweise UV-durchlässiges Fenster bildet, durch das das Titandioxid mittels einer äußeren Lichtquelle 9 bestrahlbar ist. Diese äußere Lichtquelle 9 kann durch natürliches Licht oder, wie bei der innenliegenden Lichtquelle 7, durch eine Lampe oder mehrere Lampen beliebiger Bauweise sowie strahlende Körper jeder Art gebildet sein, vorzugsweise ebenfalls durch LED's.In the alternative embodiment, a radiation-permeable wall part is provided on the filter housing 4, which forms a preferably UV-transparent window through which the titanium dioxide can be irradiated by means of an external light source 9. This external light source 9 can be formed by natural light or, as in the internal light source 7, by a lamp or multiple lamps of any design and radiating body of any kind, preferably also by LEDs.
Die „kalte" Oxydation verhindert durch das Aufoxydieren organischerThe "cold" oxidation is prevented by the oxidation of organic matter
Schmutzbeladung einen zu raschen Aufbau des Strömungswiderstandes der Filtervorrichtung 2 durch ansteigenden Differenzdruck am Filtermedium 10, so dass sich die Filterstandzeit verlängert.Dirt loading too rapid a structure of the flow resistance of Filter device 2 by increasing differential pressure on the filter medium 10, so that extends the filter life.
Bei dem Ausführungsbeispiel von Fig. 2 arbeitet die Auftrenneinrichtung elektrolytisch. Das in Fig. 2 gezeigte Filterelement 1 weist ein Filtermedium 10 auf, das sich zwischen zwei Endkappen 12, 14 erstreckt, die jeweils mit einem zuordenbaren Endbereich 16, 18 des Filterrnedium 10 verbunden sind, wobei sich zwischen dem Endbereich 16 und der Endkappe 12 ein eine Art Isolationsschicht bildendes Klebstoffbett 26 befindet, während der andere Endbereich 18 des Filtermediums 10 zur I nnenseite der unteren Endkappe 14 hin fluiddurchlässig ist. Das Filtermedium 10 stützt sich in- nenumfangsseitig an einem Stützrohr 20 ab.In the embodiment of Fig. 2, the separation device operates electrolytically. The filter element 1 shown in Fig. 2 comprises a filter medium 10 which extends between two end caps 12, 14 which are each connected to an assignable end portion 16, 18 of the Filterrnedium 10, wherein between the end portion 16 and the end cap 12 a one type of insulating layer forming adhesive bed 26 is located, while the other end portion 18 of the filter medium 10 to the inner side of the lower end cap 14 is fluid-permeable. The filter medium 10 is supported on the inner circumference of a support tube 20.
Die untere Endkappe 14 bildet an ihrer Innenseite eine im Betrieb anodisch wirksame Diamantelektrode 22. Dabei handelt es sich um eine nur wenige Nanometer dicke, kristalline Diamantschicht auf der elektrisch leitfähigen Endkappe 14, wobei der Diamant durch eine Dotierung mit dem Element Bor elektrisch leitfähig gemacht ist. Das elektrochemische Verhalten der Diamantelektrode 22 bei der Elektrolyse mit einer kathodisch wirksamen Elektrode, insbesondere aus Edelstahl, führt zu einer Auftrenn ung von Wassermolekülen in der Weise, dass anstelle von Wasserstoff und Sauerstoff hochreaktive Hydroxylradikale gebildet werden.The lower end cap 14 forms an anodically effective diamond electrode 22 on its inner side. This is a crystalline diamond layer only a few nanometers thick on the electrically conductive end cap 14, wherein the diamond is rendered electrically conductive by doping with the element boron , The electrochemical behavior of the diamond electrode 22 during the electrolysis with a cathodically active electrode, in particular stainless steel, leads to a separation of water molecules in such a way that highly reactive hydroxyl radicals are formed instead of hydrogen and oxygen.
Hinsichtlich der Ausbildung der kathodisch wirkenden Elektrode kann in- nerhalb des Filtermediums 10, das in der Art einer Filtermatte mehrlagig aufgebaut sein, kann beispielsweise eine Gitterlage aus Edelstahl vorgesehen sein.With regard to the formation of the cathodically acting electrode, it is possible within the filter medium 10, which has a multilayer structure in the manner of a filter mat, for example, to provide a grid layer made of stainless steel.
Hinsichtlich der Kontaktierung kann, wie bereits erwähnt, von der aus DE 10 2004 005 202 AI bekannten Technik ausgegangen werden, in der mehrere Bauweisen für Kontaktierungseinrichtungen an Filterelementen offen- bart sind und die an die Gegebenheiten beim Betrieb einer Elektrolysierein- richtung anpassbar sind.With regard to the contacting, as already mentioned, the technique known from DE 10 2004 005 202 A1 can be used, in which several construction methods for contacting devices on filter elements are disclosed. and are adaptable to the conditions during operation of an electrolysis device.
Ungeachtet dessen, ob eine katalytische Auftrennung von Wassermolekülen oder eine Elektrolyse angewendet wird, um Wassermoleküle in hochreaktive Hydroxy I radikale und Wasserstoff aufzutrennen, erfolgt durch den Kontakt mit Hydro xyl radikalen eine weitestgehende Oxydation organischer Stoffe. Dies führt sozusagen zu einer „kalten Veraschung" von organischen Partikeln mit Entweichen von CCh und geringfügigsten, verbleibenden Ve- raschungsresten, durch die bei Verbleib am Filtermedium kein signifikanter Anstieg des Strömungswiderstandes verursacht wird. Irrespective of whether catalytic separation of water molecules or electrolysis is used to separate water molecules into highly reactive hydroxy radicals and hydrogen, contact with hydroxyl radicals results in the greatest possible oxidation of organic substances. This leads, so to speak, to a "cold ashing" of organic particles with the escape of CCh and the slightest remaining residue of remnant which, when remaining on the filter medium, does not cause a significant increase in the flow resistance.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Filtervorrichtung zum Reinigen von Fluiden, insbesondere von Kraftstoffen, die mit organischen Inhaltsstoffen verunreinigt sind, dadurch ge- kennzeichnet, dass mittels einer Auftrenneinrichtung (10,14,22) aus in den Fluiden enthaltenen Wassermolekülen H yd roxy I radikale gebildet sind, die die Verunreinigungen, insbesondere organische Inhaltsstoffe, weitestgehend aufoxydieren und in Verbindungen, wie CCh, umwandeln.1. A filter device for purifying fluids, in particular of fuels, which are contaminated with organic ingredients, characterized in that by means of a separation device (10,14,22) of water molecules contained in the fluids H yd roxy I radicals are formed, the The impurities, especially organic ingredients, largely oxidize and convert into compounds such as CCh.
2. Filtervorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Auftrenneinrichtung Hydroxylradikale bildende, als Katalysator wirkende Medien (10) und/oder eine Elektrolysiereinrichtung (10,14,22) aufweist.2. Filter device according to claim 1, characterized in that the separation device has hydroxyl radicals forming, acting as a catalyst media (10) and / or an electrolysis device (10,14,22).
3. Filtervorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass als Katalysator dienendes Titandioxid am oder im Filtermedium (10) eines der Filtervorrichtung zugehörigen Filterelementes (1) vorgesehen ist.3. Filter device according to claim 2, characterized in that serving as a catalyst titanium dioxide on or in the filter medium (10) of the filter device associated filter element (1) is provided.
4. Filtervorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass Titandioxid als Schicht auf dem Filtermedium (10) aufgebracht ist.4. Filter device according to claim 3, characterized in that titanium dioxide is applied as a layer on the filter medium (10).
5. Filtervorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass der Katalysator zur Verstärkung seiner Wirksamkeit als Erzeuger der Hydroxylradikale mit einer Lichtstrahlung, insbesondere im Wellenlängenbereich von 180 bis 300 nm, beaufschlagbar ist.5. Filter device according to claim 3 or 4, characterized in that the catalyst to enhance its effectiveness as a producer of the hydroxyl radicals with a light radiation, in particular in the wavelength range of 180 to 300 nm, can be acted upon.
6. Filtervorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass sie ein Gehäuseteil (4) aufweist, das ein Fenster für einen Strahlungseintritt von natürlichem Licht oder durch eine künstliche Strahlungsquelle (9) erzeugtem Licht zum Katalysator am Filtermedium (10) bildet. 6. Filter device according to claim 5, characterized in that it comprises a housing part (4) which forms a window for a radiation entry of natural light or by an artificial radiation source (9) generated light to the catalyst on the filter medium (10).
7. Filtervorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass eine Strahlungsquelle (7) innerhalb des Gehäuseteiles (4) vorgesehen ist.7. Filter device according to claim 5, characterized in that a radiation source (7) within the housing part (4) is provided.
8. Filtervorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Elektrolysiereinrichtung mindestens eine bei der Elektrolyse anodisch wirkende Diamantelektrode (22) innerhalb eines ein Filterelement (1) aufnehmenden Gehäuseteiles (4) aufweist.8. Filter device according to claim 2, characterized in that the electrolysis device has at least one during the electrolysis anodic diamond electrode (22) within a filter element (1) receiving housing part (4).
9. Filtervorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Diamantelektrode (22) an einer Endkappe (14) des Filterelementes (2) gebildet ist.9. Filter device according to claim 8, characterized in that the diamond electrode (22) on an end cap (14) of the filter element (2) is formed.
10. Filtervorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass elektrisch leitfähige, insbesondere aus Edelstahl gebildete Bestandteile des Filtermediums (10) des Filterelementes (1) als Kathode der Elektrolysiereinrichtung vorgesehen sind. 10. Filter device according to claim 8 or 9, characterized in that electrically conductive, in particular made of stainless steel components of the filter medium (10) of the filter element (1) are provided as the cathode of the electrolyzer.
EP10715708.3A 2009-05-02 2010-04-22 Fuel filter device Active EP2424958B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009019744A DE102009019744A1 (en) 2009-05-02 2009-05-02 Filter device for cleaning fluids
PCT/EP2010/002464 WO2010127770A2 (en) 2009-05-02 2010-04-22 Filter device for purifying fluids

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EP2424958A2 true EP2424958A2 (en) 2012-03-07
EP2424958B1 EP2424958B1 (en) 2018-10-03

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KR (1) KR101754090B1 (en)
CN (1) CN102428162B (en)
DE (1) DE102009019744A1 (en)
WO (1) WO2010127770A2 (en)

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US10191036B1 (en) 2018-03-22 2019-01-29 NUB4U, Inc. System for detecting and removing biological analytes in fluids

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EP2424958B1 (en) 2018-10-03
US20120067720A1 (en) 2012-03-22
CN102428162A (en) 2012-04-25
DE102009019744A1 (en) 2011-04-14
US8961752B2 (en) 2015-02-24
KR101754090B1 (en) 2017-07-05
CN102428162B (en) 2015-04-22
WO2010127770A2 (en) 2010-11-11
WO2010127770A3 (en) 2010-12-29
KR20120027290A (en) 2012-03-21

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