EP2424958B1 - Fuel filter device - Google Patents

Fuel filter device Download PDF

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Publication number
EP2424958B1
EP2424958B1 EP10715708.3A EP10715708A EP2424958B1 EP 2424958 B1 EP2424958 B1 EP 2424958B1 EP 10715708 A EP10715708 A EP 10715708A EP 2424958 B1 EP2424958 B1 EP 2424958B1
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Prior art keywords
filter
filter device
catalyst
hydroxyl radicals
filter medium
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German (de)
French (fr)
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EP2424958A2 (en
Inventor
Richard Eberle
Markus Dewes
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Hydac Filtertechnik GmbH
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Hydac Filtertechnik GmbH
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    • 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 fuel filter device for purifying fuel that is contaminated with organic ingredients, wherein hydroxyl radicals are formed by means of a separation device of water molecules contained in the fluids that largely oxidize the impurities, especially organic ingredients, and convert into compounds such as CO 2 ,
  • the replacement intervals of filter arrangements generally depend on the flow resistance generated by the respective filter arrangement.
  • a gel additive is known in the art by which it is possible to reduce the ash content of an oil or exhaust gas of an engine.
  • the US 2008/0283446 A1 discloses a kerosene filter having a titanium dioxide surface for removing sulfur constituents from the kerosene.
  • From the DE 20 2005 003 720 U1 is a system for disinfecting liquids with a low conductivity. In the context of this system it is intended inter alia to provide electrodes with a doped diamond layer.
  • the US 5 141 714 A shows an exhaust gas filter provided with electrodes.
  • the invention has the object to provide a filter device for cleaning fluids, in particular of fuels available, which, although it is simple and economical to operate, allows long service lives of the filter media filter media.
  • a significant feature of the invention is that a separation device is provided which separates the water molecules contained in the fuel in question such that hydroxyl radicals are formed. Since hydroxyl radicals are chemically highly reactive oxidants, organic substances are largely oxidized by contact with hydroxyl radicals.
  • An electrolytically operating severing device has the electrolysis device at least one diamond electrode acting anodically in the electrolysis within a housing part accommodating a filter element.
  • the arrangement is preferably such that the separation device has hydroxyl radical-forming, catalyst-acting media.
  • 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 it can be provided within the housing part in a radiation-sealed housing part of the filter device, a radiation source.
  • the diamond electrode may be formed on an end cap of the filter element.
  • the electrolysis 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.
  • a filter medium 10 for separating the water in 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.
  • the Fig. 1 two alternative ways of irradiation are indicated.
  • a plurality of 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.
  • filter element 1 has a filter medium 10 which extends between two end caps 12, 14 which are each connected to a assignable end portion 16, 18 of the filter medium 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 inside of the lower end cap 14 is fluid-permeable.
  • the filter medium 10 is supported on the inner circumference side on 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 cathodically acting electrode may be constructed in several layers within the filter medium 10, which may be multi-layered in the manner of a filter mat, for example, a grid layer made of stainless steel may be provided.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Catalysts (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Filtering Materials (AREA)

Description

Die Erfindung betrifft eine Kraftstofffiltervorrichtung zum Reinigen von Kraftstoff, der mit organischen Inhaltsstoffen verunreinigt ist, wobei mittels einer Auftrenneinrichtung aus in den Fluiden enthaltenen Wassermolekülen Hydroxylradikale gebildet sind, die die Verunreinigungen, insbesondere organische Inhaltsstoffe, weitestgehend aufoxydieren und in Verbindungen, wie CO2, umwandeln.The invention relates to a fuel filter device for purifying fuel that is contaminated with organic ingredients, wherein hydroxyl radicals are formed by means of a separation device of water molecules contained in the fluids that largely oxidize the impurities, especially organic ingredients, and convert into compounds such as CO 2 ,

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.The replacement intervals of filter arrangements generally depend on the flow resistance generated by the respective filter arrangement.

Mit zunehmender Schmutzbeladung des Filters steigt der am Filtermedium gebildete Differenzdruck und damit der Strömungswiderstand.With increasing dirt loading of the filter, the differential pressure formed on the filter medium and thus the flow resistance increases.

Durch die US 2004/0261313 A1 ist ein gelförmiges Additiv im Stand der Technik bekannt, durch das es möglich ist, den Aschebestandteil eines Öls oder Abgases eines Motors zu reduzieren.By the US 2004/0261313 A1 For example, a gel additive is known in the art by which it is possible to reduce the ash content of an oil or exhaust gas of an engine.

Die US 2008/0283446 A1 offenbart einen Kerosinfilter mit einer Titandioxidoberfläche zur Entfernung von Schwefelanteilen aus dem Kerosin.The US 2008/0283446 A1 discloses a kerosene filter having a titanium dioxide surface for removing sulfur constituents from the kerosene.

In der WO 2004/004869 A1 wird ein Plasma-Rußfilter zur Verminderung von kohlenstoffhaltigen Partikelemissionen von Dieselmotoren beschrieben. In das Filtermaterial eines Abgfasfilterelements sind dabei Elektroden eingearbeitet.In the WO 2004/004869 A1 describes a plasma soot filter for reducing carbonaceous particulate emissions from diesel engines. In the filter material of a Abgfasfilterelements while electrodes are incorporated.

Aus der DE 20 2005 003 720 U1 geht ein System zur Desinfektion von Flüssigkeiten mit einer geringen Leitfähigkeit hervor. Im Rahmen dieses Systems ist es unter anderem vorgesehen, Elektroden mit einer dotierten Diamantschicht zu versehen.From the DE 20 2005 003 720 U1 is a system for disinfecting liquids with a low conductivity. In the context of this system it is intended inter alia to provide electrodes with a doped diamond layer.

Die US 5 141 714 A zeigt einen Abgasfilter auf, der mit Elektroden versehen ist.The US 5 141 714 A shows an exhaust gas filter provided with electrodes.

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 available, which, although it is simple and economical to operate, allows long service lives of the filter media filter media.

Erfindungsgemäß ist diese Aufgabe durch eine Kraftstofffiltervorrichtung gelöst, die die Merkmale des Patentanspruches 1 in seiner Gesamtheit aufweist.According to the invention this object is achieved by a fuel 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 Kraftstoff enthaltenen Wassermoleküle derart auftrennt, dass Hydroxylradikale gebildet werden. Da Hydroxylradikale chemisch hochreaktive Oxydantien sind, werden organische Stoffe durch Kontakt mit Hydroxylradikalen weitestgehend aufoxydiert. Eine elektrolytisch arbeitende Auftrenneinrichtung weist die Elektrolysiereinrichtung mindestens eine bei der Elektrolyse anodisch wirkende Diamantelektrode innerhalb eines ein Filterelement aufnehmenden Gehäuseteiles auf.Accordingly, a significant feature of the invention is that a separation device is provided which separates the water molecules contained in the fuel in question such that hydroxyl radicals are formed. Since hydroxyl radicals are chemically highly reactive oxidants, organic substances are largely oxidized by contact with hydroxyl radicals. An electrolytically operating severing device has the electrolysis device at least one diamond electrode acting anodically in the electrolysis within a housing part accommodating a filter element.

Während organische Stoffe in Partikelform einen hohen Strömungswiderstand 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 Hydroxylradikalen vor. Im Ergebnis ist eine Reinigungsvorrichtung geschaffen, die sich durch ein wirtschaftliches Betriebsverhalten auszeichnet, insbesondere im Hinblick auf die Verringerung von Filterwechselintervallen.While particulate organic matter causes high flow resistance in filtering devices, this is not the case with the oxides formed by the oxidation, for example CO 2 . 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 CO 2 . Similarly, with fluid filter devices, the invention provides for "cold" hydroxyl radical oxidation. As a result, a cleaning device is provided, which is characterized by an economical operating behavior, in particular with regard to the reduction of filter change intervals.

Hinsichtlich der Erzeugung der Hydroxylradikale ist die Anordnung vorzugsweise so getroffen, dass die Auftrenneinrichtung Hydroxylradikale bildende, als Katalysator wirkende Medien aufweist.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.

Bei katalytisch arbeitender Auftrenneinrichtung ist mit besonderem Vorteil als Katalysator dienendes Titandioxid am oder im Filtermedium eines der Filtervorrichtung zugehörigen Filterelementes vorgesehen.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 natürlichem 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 vorgesehen sein.Alternatively it can be provided within the housing part in a radiation-sealed housing part of the filter device, a radiation source.

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 Elektrolysiereinrichtung vorgesehen sein.To complete the electrolysis 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.

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 of the in the document DE 10 2004 005 202 A1 demonstrated technique be made use of.

Nachstehend ist die Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen im Einzelnen erläutert. Es zeigen:

Fig. 1
in schematischer und lediglich in der Art einer Symbolskizze vereinfachter Darstellung ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung mit katalytisch arbeitender Auftrenneinrichtung, wobei zwei alternative Möglichkeiten der Zufuhr einer Lichtstrahlung angedeutet sind, und
Fig. 2
eine teils aufgeschnitten gezeichnete perspektivische Ansicht eines Filterelementes für ein Ausführungsbeispiel der Erfindung, bei dem eine elektrolytische Auftrenneinrichtung vorgesehen ist.
The invention with reference to embodiments shown in the drawings will be explained in detail. Show it:
Fig. 1
an embodiment of the device according to the invention with catalytically operating separation device, wherein two alternative ways of supplying a light radiation are indicated, in schematic and merely in the manner of a symbol sketch simplified representation
Fig. 2
a partially cutaway perspective view of a filter element for an 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 Diamantelektrode, die durch eine Dotierung mit dem Element Bor elektrisch leitfähig ist, eine spezielle Wasserzersetzung erreichen, bei der anstelle von Sauerstoff und Wasserstoff hochreaktive Hydroxylradikale 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 eignet. 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 it is usually split into hydrogen and oxygen, it is possible 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, to achieve a specific water decomposition 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. Based on Fig. 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 is in the Fig. 1 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. For separating the water in 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 the Fig. 1 two alternative ways of irradiation are indicated. In one case, there is a light source 7 inside the filter housing 4. Although only one light source 7 is indicated in the drawing, a plurality of 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 organischer Schmutzbeladung einen zu raschen Aufbau des Strömungswiderstandes der Filtervorrichtung 2 durch ansteigenden Differenzdruck am Filtermedium 10, so dass sich die Filterstandzeit verlängert.The "cold" oxidation prevented by the Aufoxydieren organic dirt loading too rapid construction of the flow resistance of the 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 Filtermedium 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 Innenseite der unteren Endkappe 14 hin fluiddurchlässig ist. Das Filtermedium 10 stützt sich innenumfangsseitig an einem Stützrohr 20 ab.In the embodiment of Fig. 2 the severing device operates electrolytically. This in Fig. 2 shown filter element 1 has a filter medium 10 which extends between two end caps 12, 14 which are each connected to a assignable end portion 16, 18 of the filter medium 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 inside of the lower end cap 14 is fluid-permeable. The filter medium 10 is supported on the inner circumference side on 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 Auftrennung 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 made of 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 innerhalb 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 may be constructed in several layers within the filter medium 10, which may be multi-layered in the manner of a filter mat, for example, a grid layer made of stainless steel may be provided.

Hinsichtlich der Kontaktierung kann, wie bereits erwähnt, von der aus DE 10 2004 005 202 A1 bekannten Technik ausgegangen werden, in der mehrere Bauweisen für Kontaktierungseinrichtungen an Filterelementen offenbart sind und die an die Gegebenheiten beim Betrieb einer Elektrolysiereinrichtung anpassbar sind.With regard to the contacting can, as already mentioned, from the DE 10 2004 005 202 A1 known technique are disclosed in the several designs for contacting devices on filter elements and which are adaptable to the circumstances in the operation of an electrolysis device.

Ungeachtet dessen, ob eine katalytische Auftrennung von Wassermolekülen oder eine Elektrolyse angewendet wird, um Wassermoleküle in hochreaktive Hydroxylradikale und Wasserstoff aufzutrennen, erfolgt durch den Kontakt mit Hydroxylradikalen eine weitestgehende Oxydation organischer Stoffe. Dies führt sozusagen zu einer "kalten Veraschung" von organischen Partikeln mit Entweichen von CO2 und geringfügigsten, verbleibenden Veraschungsresten, durch die bei Verbleib am Filtermedium kein signifikanter Anstieg des Strömungswiderstandes verursacht wird.Regardless of whether a catalytic separation of water molecules or an electrolysis is used to separate water molecules into highly reactive hydroxyl radicals and hydrogen, the contact with hydroxyl radicals leads to the greatest possible oxidation of organic substances. This leads, so to speak, to a "cold ashing" of organic matter Particles with escape of CO 2 and the slightest, remaining Veraschungsresten, by the remaining on the filter medium, no significant increase in the flow resistance is caused.

Claims (9)

  1. Fuel filter device for cleaning fuel contaminated with organic ingredients, wherein hydraulic hydroxyl radicals are formed by means of a separating device (10, 14, 22) from water molecules contained in the fluids, which oxidise the contaminants, in particular organic ingredients, as best possible and convert them into compounds like CO2, characterised in that the separating device comprises an electrolysing device (10, 14, 22) and in that the electrolysing device comprises at least one diamond electrode (22) acting anodically during electrolysis within a housing part (4) receiving a filter element (1).
  2. Filter device according to Claim 1, characterised in that the separating device comprises media (10) which form hydroxyl radicals and act as a catalyst.
  3. Filter device according to Claim 2, characterised in that titanium dioxide serving as catalyst is provided on or in the filter medium (10) of a filter element (1) belonging to the filter device.
  4. Filter device according to Claim 3, characterised in that titanium dioxide is applied as a layer on the filter medium (10).
  5. Filter device according to Claim 3 or 4, characterised in that the catalyst can be subjected to light radiation, in particular in the wavelength range of 180 to 300 nm, in order to increase its effectiveness as a generator of hydroxyl radicals.
  6. Filter device according to Claim 5, characterised in that it comprises a housing part (4) which forms a window for an entrance of natural light or light radiation generated by an artificial radiation source (9) to the catalyst at the filter medium (10).
  7. Filter device according to Claim 5, characterised in that a radiation source (7) is provided inside the housing part (4).
  8. Filtering device according to one of the preceding Claims, characterised in that the diamond electrode (22) is formed on an end cap (14) of the filtering element (2).
  9. Filter device according to one of the preceding Claims, characterised in that electrically conductive components of the filter medium (10) of the filter element (1), in particular components formed of stainless steel, are provided as cathodes of the electrolysing device.
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

Publications (2)

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

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EP10715708.3A Active EP2424958B1 (en) 2009-05-02 2010-04-22 Fuel filter device

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US (1) US8961752B2 (en)
EP (1) EP2424958B1 (en)
KR (1) KR101754090B1 (en)
CN (1) CN102428162B (en)
DE (1) DE102009019744A1 (en)
WO (1) WO2010127770A2 (en)

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GB2543095A (en) * 2015-10-09 2017-04-12 Jaguar Land Rover Ltd Fuel filter apparatus and method
US10191036B1 (en) 2018-03-22 2019-01-29 NUB4U, Inc. System for detecting and removing biological analytes in fluids

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US5464513A (en) * 1994-01-11 1995-11-07 Scientific Utilization, Inc. Method and apparatus for water decontamination using electrical discharge
KR100253999B1 (en) * 1994-10-06 2000-04-15 서순기 Method for purifying waste water
US6596174B1 (en) * 1998-09-11 2003-07-22 Alexander C. Marcus Diesel fuel cleaning and re-circulation system
FR2812825B1 (en) * 2000-08-14 2003-04-18 Ahlstrom Paper Group Res And C FILTER MEDIA BASED ON PHOTOCATALYZERS AND ACTIVE CARBON
DE10229881B4 (en) * 2002-07-03 2008-01-31 Siemens Ag Plasma particulate filter
US20040261313A1 (en) 2003-06-25 2004-12-30 The Lubrizol Corporation, A Corporation Of The State Of Ohio Gel additives for fuel that reduce soot and/or emissions from engines
DE102004005202A1 (en) 2004-02-03 2005-08-25 Hydac Filtertechnik Gmbh filter element
US7316857B1 (en) * 2004-06-28 2008-01-08 Swanson Steven T Miniature electrochemical gas generator and power source
JP2006136874A (en) * 2004-10-15 2006-06-01 Ube Nitto Kasei Co Ltd Circulation type sewage purification method
DE202005003720U1 (en) * 2005-03-04 2006-07-13 Condias Gmbh System for the disinfection of liquids with a low conductivity
KR20080050355A (en) * 2005-09-26 2008-06-05 스미토모덴키고교가부시키가이샤 Diamond covered substrate, filtration filter, and electrode
JP5172084B2 (en) * 2005-09-26 2013-03-27 住友電気工業株式会社 Diamond coated substrate, filtration filter and electrode
WO2008137463A2 (en) 2007-05-01 2008-11-13 Auburn University Doped supported zinc oxide sorbents for desulfurization applications
WO2009050163A2 (en) * 2007-10-18 2009-04-23 Basf Se Method for electrochemical sewage treatment by means of a diamond electrode and titanium dioxide

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Publication number Publication date
KR101754090B1 (en) 2017-07-05
US8961752B2 (en) 2015-02-24
EP2424958A2 (en) 2012-03-07
CN102428162A (en) 2012-04-25
WO2010127770A3 (en) 2010-12-29
WO2010127770A2 (en) 2010-11-11
KR20120027290A (en) 2012-03-21
CN102428162B (en) 2015-04-22
US20120067720A1 (en) 2012-03-22
DE102009019744A1 (en) 2011-04-14

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