WO2009149969A1 - Vorrichtung zur stabilisierung oxidierbarer flüssigkeiten sowie verwendung der vorrichtung - Google Patents
Vorrichtung zur stabilisierung oxidierbarer flüssigkeiten sowie verwendung der vorrichtung Download PDFInfo
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- WO2009149969A1 WO2009149969A1 PCT/EP2009/053922 EP2009053922W WO2009149969A1 WO 2009149969 A1 WO2009149969 A1 WO 2009149969A1 EP 2009053922 W EP2009053922 W EP 2009053922W WO 2009149969 A1 WO2009149969 A1 WO 2009149969A1
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- Prior art keywords
- fuel
- antioxidant
- immobilized
- adsorber
- adsorbent
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/14—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding anti-knock agents, not provided for in subgroups F02M25/022 - F02M25/10
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
- B01D36/006—Purge means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
- C10L1/026—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only for compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
- F02M27/02—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by catalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/24—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
-
- 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
- C10G2300/10—Feedstock materials
- C10G2300/1011—Biomass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the invention relates to a device for stabilizing oxidizable liquids according to the preamble of claim 1. Furthermore, the invention relates to a use of the device.
- Oxidizable liquids are, for example, oxidation-labile fuels, as used for example in internal combustion engines in motor vehicles. Such oxidation-labile fuels are in particular biogenic fuels. Biogenic fuels are fuels of biological origin. These are mixed with both diesel fuel and gasoline.
- Biogenic fuels that are added to diesel fuel are, for example, esters of long-chain, often unsaturated fatty acids, which are obtained by transesterification of various biogenic oils and fats.
- diesel fuel with a share of 5% biogenic fuels is currently available on the market.
- Biodiesel also a biogenic fuel is sold in its pure form.
- a well-known representative of the biogenic fuels is, for example, rapeseed oil methyl ester.
- Biogenic fuels that are added to gasolines are usually alcohols.
- biogenic fuels are subject to aging or biodegradability or decomposition. As degradation products often arise organic acids that can cause corrosion of metallic materials. The corrosive effect of biogenic fuels or the acid degradation products on hydraulic components of injection systems, as they are usually used today in internal combustion engines, must be prevented. In particular, fuel injectors are manufactured extremely precisely to meet the functional requirements. By corrosion can however, small, unpredictable changes in fuel metering occur, for example, to an injector. This has significant effects on both fuel consumption and pollutant emissions. In the worst case, corrosion can even lead to the failure of the entire injection system.
- the chemical and biochemical degradation reactions of biogenic fuels are initiated by a reaction with atmospheric oxygen, an oxygenation.
- unsaturated organic compounds are susceptible to such reactions with atmospheric oxygen.
- free acids are also formed by acid-catalyzed ester cleavage with water.
- the water is generally already dissolved in the fuel or is introduced into the fuel and condensed out again. The entrainment of the water can be done, for example, during refueling of the motor vehicle. At higher temperatures during operation of the vehicle, for example, water accumulates in the fuel tank. This is because the solubility of water in the fuel increases with temperature. When parking the vehicle and cooling the fuel, the entrained water can condense in the injection system and unfold there its corrosive effect.
- biogenic fuels Due to their higher polarity compared to pure diesel fuel, biogenic fuels show an increased water absorption capacity. For this reason, the water-related corrosion is also further increased compared to pure diesel fuel.
- antioxidants are added in small amounts.
- the antioxidants are homogeneously dissolved in the liquid.
- ascorbic acid (vitamin C) or tocopherols or tocotrienols (vitamin E) are added.
- Synthetic antioxidants are, for example, phenols, enols or endiols. The antioxidants slow down the oxidative degradation of constituents of the liquid by reducing and / or trapping the antioxidants (radical) intermediates or by reducing or chemically binding the oxygen dissolved in the liquid directly to water.
- the stabilizing effect of homogeneously dissolved antioxidants remains only until they themselves have been oxidized. Since, however, especially in fuels, the concentration of antioxidants should remain low in order to exclude negative effects on fuel properties and / or hydraulic components, the stabilizing effect is limited. A simple increase in the concentration of antioxidants for storage stabilization is not possible. Disclosure of the invention
- An inventively designed device for stabilizing oxidizable liquids comprises a housing through which the liquid can flow.
- the housing contains at least one antioxidant immobilized on a carrier material and not soluble in the oxidizable liquid.
- the antioxidant By immobilizing the antioxidant on a carrier, it is possible to use a much larger amount of the at least one antioxidant. A greater storage stability of the liquid can be achieved without the liquid being admixed with antioxidants in the form of additives which are homogeneously dissolved in the liquid. As the housing flows through the at least one antioxidant immobilized on a carrier material, intermediates are reduced and / or trapped. Due to the much larger amount of antioxidants compared to the addition as an additive, the stabilizing effect can be increased in time many times. Also, no adverse, corrosive effects occur because the antioxidants or their reaction products are not flushed out into the liquid and thus can not come into contact with metallic materials. The corrosive action of antioxidants dissolved in the liquid results from the fact that these or their derivatives are good complexing agents to metals.
- Oxidizable liquids in the context of the present invention are, for example, fuels, such as commercial or generally known fuels for internal combustion engines, which contain predominantly different boiling fractions of aliphatic and aromatic hydrocarbons and other additives, so-called additives.
- the fuels can also be of biogenic origin.
- the fuels may also include other synthetically produced hydrocarbon compounds, so-called SynFuels, BTL or GTL fuels, produced, for example, by the Fischer-Tropsch synthesis.
- the term fuels also includes oxygen-containing hydrocarbons, for example alcoholic compounds, ethers, for example diethylene glycol dimethyl ether, esters, ketones, ketals, aldehydes, acetals and others.
- the aforementioned fuels may each be contained individually or in mixtures with a proportion of the individual types of fuel between 0 and 100% in the fuel.
- Any antioxidant known to those skilled in the art may be used as antioxidant.
- the antioxidant is selected from the group consisting of ascorbic acid (vitamin C), tocopherols, tocotrienols (vitamin E), phenols, enols and endiols.
- Ascorbic acid, tocopherols and tocotrienols are naturally occurring antioxidants, phenols, enols and endiols are synthetically produced antioxidants. In addition to the substances mentioned, their derivatives are also suitable.
- Suitable phenols, enols and endiols are, for example, substituted hydroquinones, phloroglucins, resorcinols, cresols, catechols, 2-biphenylol, pyrogallol or ⁇ -hydroxyketones.
- the support material on which the antioxidants or their derivatives are immobilized are inorganic or organic in nature.
- Inorganic carrier materials are, for example, ceramics or metal oxides, such as aluminum oxide.
- Organic carrier materials are, for example, polymers. Suitable polymers include, for example, crosslinked polystyrene or a divinylbenzene crosslinked polymer. Also suitable are copolymers such as polyacrylic-maleic acid, into which the antioxidant is copolymerized.
- Immobilization of the antioxidant on the carrier material does not allow it to detach from the carrier material and thus not dissolve in the fuel. This is achieved, for example, by forming a chemical bond between the antioxidant and the carrier material. It is also conceivable that, as a result of a very strong adsorptive interaction between antioxidant and carrier material, dissolution in the fuel is already prevented.
- the apparatus for stabilizing oxidizable liquids further comprises an adsorber comprising at least one adsorbent and / or molecular sieve in which acidic components and / or water are removed from the liquid.
- an adsorber comprising at least one adsorbent and / or molecular sieve in which acidic components and / or water are removed from the liquid.
- the adsorbent preferably comprises a basic adsorber material, a structurally bulky adsorbent material and / or a sterically hindered base.
- the acidic components or the water are adsorbed on the basic adsorber material.
- the separation of the acidic components or of the water takes place by molecular filtration with the aid of the molecular sieve.
- an optional ester cleavage takes place on the basic adsorber material, i. an undesired fuel cleavage, for example, suppressed by a transesterification.
- an undesired fuel cleavage for example, suppressed by a transesterification.
- the ester cleavage by the voluminous, long-chain residues of the constituents of the biogenic fuel.
- Sterically hindered bases can not react with the ester because of their spatially bulky molecular structure. However, they can deprotonate the acidic decomposition products of the biogenic fuels and / or water. This also works if the acidic decomposition products have a molecular size comparable to the ester.
- the steric hindrance can be realized in particular in that the sterically hindered base is part of a polymeric, structurally voluminous carrier material.
- the carrier for example, crosslinked polystyrene or its derivatives, for example, divinylbenzene, can be used. Such carriers are insoluble in organic media.
- basic compounds as adsorbent are polymeric compounds.
- Most suitable are basic resins which may be neutral or ionic.
- Ionic resins are also used as basic or acidic ion exchangers. These are commercially available in different base strengths.
- the ion exchangers can be present either as a solid or as a viscous liquid.
- ion exchangers comprise a crosslinked resin matrix in gel structure with incorporated fixed ions and usually moveably bound counterions.
- the counterions can be exchanged for other counterions of the same polarity.
- weakly acidic inorganic materials when used as the molecular sieve, for example, they can be basified with strong bases. Modified in this way, these then likewise act as strongly basic adsorbers and are advantageous for the purposes of the invention.
- surface-based metal oxides for example basic alumina
- adsorbent and / or molecular sieve are all organic or inorganic materials which have basic surfaces or centers and thereby firmly bind acidic components.
- inorganic ion exchange materials are generally used here.
- Such inorganic ion exchange materials are, for example, zeolites, silicates or clay minerals. Frequently the molecular sieves are cation exchangers. However, this is not required according to the invention.
- a cation exchanger as a molecular sieve, it must be ensured that all acidic centers of the cation exchanger are exchanged for non-acidic cations. If this is not the case, residual acidity of the adsorber material could favor the degradation of the biogenic fuel by acid catalysis.
- desiccant such as anhydrous magnesium sulfate, calcium sulfate or calcium chloride can be used.
- ester cleavage When using basic adsorber materials, care must be taken that the reaction of an ester with a strong mobile base leads to cleavage of the ester. For example, in the classic ester saponification, caustic soda is reacted with an ester and irreversibly converted to the sodium salt of the acid and a free alcohol. However, the ester cleavage may also occur, for example, by means of the water contained in the fuel in the presence of a basic material. This too leads to an irreversible cleavage of the ester constituents of the biogenic fuel.
- the immobilized on a support material antioxidant and the adsorbent and / or molecular sieve or other desiccant are accommodated in a common housing.
- Such a construction saves space since only one apparatus is needed to realize both the oxidative degradation of constituents and the removal of acids and / or water.
- the antioxidant immobilized on the carrier material and the adsorbent and / or the molecular sieve or the desiccant alternately in a plurality of layers in the housing, through which the oxidizable liquid flows in succession.
- a uniform adsorber medium which contains both the immobilized antioxidant and the adsorbent and / or the molecular sieve or desiccant.
- the device comprises a filter element.
- a filter element is, for example when used in motor vehicles, a fuel filter.
- the device additionally comprises a filter element, it is likewise preferred for the antioxidant immobilized on the carrier material and, if appropriate, the adsorbent and / or the molecular sieve or the desiccant and the filter element to be accommodated in a housing, in order to save installation space a filter element is included, it is further preferred that the filter material of the filter element is the carrier material on which, for example, the antioxidant is immobilized. In this case, suspended solids are simultaneously separated from the oxidizable liquid and oxidizable constituents are reduced.
- the device according to the invention is particularly suitable for stabilizing oxidation-labile fuels or organic solvents.
- the device according to the invention is used to stabilize oxidation-labile fuels in the fuel supply of internal combustion engines, combustion plants or industrial engines or to stabilize oxidation-labile fuels or organic solvents in liquid bearings.
- a storage tank with a liquid circulation in which the device according to the invention is accommodated.
- the liquid is circulated in a constant flow through the device in the liquid circulation and thus stabilized.
- the housing with the immobilized on a support material antioxidant and optionally the adsorber are preferably between the fuel tank and a pump, with the fuel to the combustion chambers of the internal combustion engine conveyed and compressed, arranged.
- the housing with the immobilized on a support material contained antioxidant and optionally the adsorber can, for example be arranged between the fuel tank and a fuel filter or connect to the fuel filter.
- the antioxidant immobilized on the carrier material and the adsorber are particularly preferably, as already described above, a constituent of the fuel filter.
- Such a fuel filter generally comprises an annular filter substrate through which the fuel flows.
- screw-on filters are used with star-folded or wound filter substrate.
- fuel filters are also used with aluminum / plastic and solid plastic housing. As a replacement part remains only a metal-free filter insert.
- a support tube is generally received, which is enclosed by the filter substrate. The fuel, after passing through the filter substrate, flows back through the support tube.
- the antioxidant immobilized on the support material and optionally the adsorbent and / or the molecular sieve or the drying agent are contained in the support tube.
- the immobilized on the support material antioxidant and optionally the adsorbent and / or the molecular sieve or the desiccant are used as filter material of the fuel filter.
- the filter substrate is the carrier material for the antioxidant and if it is to serve simultaneously as an adsorbent and / or molecular sieve or desiccant, made of the adsorbent and / or the molecular sieve or the desiccant.
- the adsorbent and / or molecular sieve or the desiccant as described above is part of the fuel filter and the immobilized on the support material antioxidant is disposed in a separate housing.
- the antioxidant immobilized on the carrier material and optionally has been freed from acidic components and / or water in the adsorber it is completely or at least partially recycled to the fuel tank. This protects the entire contents of the fuel tank from autocatalytic decomposition of the fuel. Also, the content of free acids and / or water in the fuel is kept to a minimum. Accordingly, even when using the device in a furnace or in a liquid storage pumped around, in order to achieve a sufficient stabilization in this way.
- the fuel When used in self-igniting internal combustion engines common rail systems, ie injection systems that work with a high-pressure accumulator, the fuel is on the path from the fuel tank into the high-pressure accumulator via the immobilized on the support material antioxidant and optionally passed through the adsorber and protected in this way from oxidative degradation and when an adsorber is included, simultaneously freed of water and / or acidic components. In this way, an acid and / or water-free fuel is supplied to the high pressure side of the injection module. As a result, the individual components of the common rail system are efficiently protected against corrosion. About the fuel return of the common rail system protected from oxidative degradation and freed of acid and / or water fuel flows back into the fuel tank.
- FIG. 1 shows a schematic representation of a high-pressure accumulator injection system
- Figure 2 is a three-dimensional sectional view of a fuel filter.
- FIG. 1 shows a schematic representation of a high-pressure accumulator injection system (common rail injection system), in which a possible position of the immobilized on a support material antioxidant is shown.
- a high-pressure accumulator injection system 1 comprises a fuel tank 3 in which fuel is stored.
- a fuel line 5 opens out of the fuel tank 3.
- a housing 7 adjoins the fuel tank 3 in the fuel line 5, in which at least one antioxidant immobilized on a carrier material is contained in order to protect the fuel from oxidative degradation.
- an adsorber 8 can be connected to the housing 7 with the antioxidant immobilized on the carrier material.
- the adsorber 8 contains an adsorbent and / or a molecular sieve or a drying agent, with which acidic components and / or water are removed from the fuel.
- the adsorbent preferably comprises a sterically hindered base.
- antioxidants for example, derivatives of natural antioxidants such as vitamin C (ascorbic acid) or vitamin E (tocopherols or tocotrienols) are used.
- synthetic antioxidants phenols, enols and endiols can be used.
- substituted derivatives can also be used. The antioxidants slow the oxidative degradation of fuel constituents by reducing and / or trapping the intermediates or by reducing or chemically bonding the oxygen dissolved in fuel directly to water.
- Suitable carrier materials on which the antioxidant is immobilized by, for example, copolymerization are, for example, crosslinked polystyrene polymers known for ion exchange resins, in particular divinylbenzene (DVB) -linked polymers or copolymers of acrylic acid, for example acrylic-maleic acid polymers.
- crosslinked polystyrene polymers known for ion exchange resins in particular divinylbenzene (DVB) -linked polymers or copolymers of acrylic acid, for example acrylic-maleic acid polymers.
- DVD divinylbenzene
- a strongly basic anion exchanger When used as the adsorbent, it has, for example, as functional fixed-bed ions, quaternary ammonium compounds embedded in a crosslinked resin matrix in gel structure.
- Crosslinked polystyrene is used as the matrix, as well as the support material for the antioxidant.
- Particularly suitable as a matrix is crosslinked divinylbenzene.
- the anion of the ion exchanger used is preferably RO ", where R is an organic, structurally bulky radical, for example a tertiary butyl group or the polymeric support structure per se, preferably the polymeric support structure per se.
- the fixed bed of the anion exchanger acts as a sterically hindered base capable of neutralizing acidic constituents of the decomposition products present in the fuel in an acid-base reaction and to firmly bind them in the adsorbent material with salt formation.
- both ionic species are immobile.
- both ion types are polyionic. This results in all reactants being firmly bound in the adsorber. Characterized in that the acidic components and / or the water are removed from the fuel in the adsorber 8, the subsequent parts of the high-pressure storage injection system 1 are effectively protected from corrosion.
- the adsorber 8 is followed by a fuel filter 9.
- solid components and impurities are removed from the fuel.
- free water contained in diesel fuel is largely precipitated. Since water is heavier than the diesel fuel, this accumulates in a water storage space of the fuel filter. 9
- the fuel filter 9 is generally followed by a prefeed pump 11. This is followed by a high pressure pump 13, with which the fuel is compressed to the accumulator pressure.
- the accumulator pressure to which the fuel is compressed by the high-pressure delivery pump 13 is generally in the range of e.g. 1600 to 2000 bar. With the help of a pressure control valve 15, the pressure is kept constant.
- the system pressure compressed fuel is then delivered to a high pressure accumulator 17. So that the fuel contained in the high-pressure accumulator 17 has system pressure during the entire operating time of the internal combustion engine, a pressure sensor 19 is arranged on the high-pressure accumulator 17.
- the pressure sensor 19 is connected to an electronic control unit 21. With the electronic control unit 21 and the high-pressure pump 13 is still connected. Depending on the measured pressure, the high-pressure pump 13 is controlled by the electronic control unit 21.
- High-pressure lines 23 fuel injectors 25 are connected to the high-pressure accumulator 17.
- the fuel injectors 25 are supplied with fuel via the high pressure lines 23.
- the fuel is then injected via the fuel injectors 25 into combustion chambers, not shown here, of an internal combustion engine.
- the order of injection is also controlled by the electronic control unit 21.
- the fuel injectors 25 are connected to the control unit 21.
- the fuel injectors 25 operate hydraulically, and for switching the valves, the fuel under system pressure is used in conjunction with an electric drive. Not injected into the combustion chambers of the internal combustion engine fuel is fed back via a fuel return line 27 into the fuel tank 3.
- the housing with the antioxidant immobilized on the carrier material is placed between the adsorber 8 and the fuel filter 9.
- the housing 7 with the antioxidant immobilized on the carrier material is placed between the fuel filter 9 and the prefeed pump 11.
- both the adsorber 8 and the housing 7 with the antioxidant immobilized on the carrier material are placed between the fuel filter 9 and the prefeed pump 11, it is also possible that in the flow direction of the fuel through the fuel line 5, first the housing with the therein contained on the support material immobilized antioxidant and then the adsorber 8 or first the adsorber 8 and then the housing 7 are placed in the contained therein on the carrier material immobilized antioxidant.
- the antioxidant immobilized on the carrier material may be part of the fuel filter 9.
- the adsorber 8 may be part of the fuel filter 9.
- FIG. 2 shows a three-dimensional sectional view of a fuel filter.
- a fuel filter 9, as used in self-igniting internal combustion engines, comprises a filter substrate 31, which is traversed by the fuel and are separated in the impurities from the fuel. The flow of the fuel is shown by an arrow 33. At the top of the fuel filter 9 are inlet openings 35 through which the fuel enters the filter. The inlet openings 35 are formed in a filter cover 37. Between the filter cover 37 and the filter substrate 31 there is a space 39 through which the fuel is distributed into the filter substrate 31.
- the filter substrate 31 contains e.g. Multi-layer filter media that filters out impurities contained in the fuel.
- the filter substrate 31 encloses a support tube 41, through which the filtered fuel flows to an outlet opening 43.
- the outlet opening 43 centrally within the inlet region in which the inlet openings 35 are formed.
- a sealing element 45 seals the inlet region of the fuel filter 9 against the environment.
- the filter substrate 31 is enclosed by a filter housing 49.
- the filter cover 37 is connected by means of a double flanging 51 with the filter housing 49.
- a liquid-tight connection is achieved. Since free water is heavier than diesel fuel, it sinks and collects in the water storage space 53.
- the diesel fuel is deflected in the water storage space 53 and flows out of the filter substrate 31 via the support tube 41 back up to the outlet opening 43.
- this is provided with a water drainage screw 55 and a drain tube 57.
- the carrier material 59 with the antioxidant immobilized thereon is arranged in the support tube 41 of the fuel filter 9 in a preferred embodiment.
- an adsorber 7 is included, it is preferably likewise arranged in the support tube 41 of the fuel filter 9. As it flows through the immobilized on the support antioxidant fuel is stabilized. By flowing through the adsorber 7, any dissolved (dissolved) water that has not been removed in the fuel filter 9 and collects in the water storage space 53 as well as acidic components of the fuel are removed from the already filtered fuel.
- the support material 59 with the antioxidant immobilized thereon and optionally the adsorber 7 are placed in the support tube 41, it is also possible, for example, to immobilize the antioxidant on the filter substrate 31. It is also possible to position the carrier material 59 with the antioxidant immobilized thereon and optionally the adsorber 7 in the space surrounding the support tube 41. In this case, it is possible, on the one hand, for the carrier material 59 with the antioxidant immobilized thereon and the adsorber 7 to be positioned, for example, in the space 39 or to connect to the filter substrate 31 in the form of a circular ring.
- the filter substrate 31 itself to be designed as an adsorber and / or molecular sieve or desiccant for removing water and acidic components.
- the filter substrate 31 acts both as an adsorber and / or molecular sieve or desiccant, and more preferably at the same time the antioxidant is immobilized on the adsorber and / or molecular sieve or desiccant.
- the fuel has a sufficient contact time with both the antioxidant immobilized on the carrier material and with the adsorber or having the molecular sieve or desiccant.
- Suitable adsorbents are, for example, weakly basic, neutral adsorbers, strongly basic, polycationic and polyanionic adsorbers and surface-based metal oxides.
- R 1 to R 3 are in particular organic, long-chain radicals or the polymeric support structure of the weakly basic, neutral adsorber.
- R 5 represents the remainder of an acidic component. In general, this is an organic radical.
- R 5 is for example OOCR 7 .
- the acidic component is a carboxylic acid and R7 is hydrogen or an organic radical as contained in biogenic fuels.
- R 7 is an organic residue, it can be both long and short chain.
- Ri to R 4 mean organic, long-chain radicals or the polymeric support structure of the adsorbent material.
- R 5 as above, also means the organic radical of an acidic component.
- R 6 is an organic or inorganic, polymeric and thus insoluble in the fuel, strongly basic radical.
- OR 6 is for example a sterically bulky polyalkoxide.
- a surface-based metal oxide for example an aluminum oxide, the following applies:
- R 5 as above also means the organic residue of an acidic component.
- an inorganic or metal oxide carrier material may also be surface-modified with a preferably sterically hindered base.
- the sterically hindered base may be inorganic or organic, preferably organic.
- the amount of antioxidant immobilized on the support material, as well as the amount of adsorber material needed to remove acidic components and / or water, can be estimated by a simple design calculation. The amount depends on the period of time after which the carrier material with the antioxidant immobilized on it or the adsorber is to be changed under the respective operating conditions.
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Abstract
Description
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CN2009801194711A CN102046956A (zh) | 2008-05-28 | 2009-04-02 | 用于使可氧化的液体稳定化的装置以及该装置的用途 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008002020A DE102008002020A1 (de) | 2008-05-28 | 2008-05-28 | Vorrichtung zur Stabilisierung oxidierbarer Flüssigkeiten sowie Verwendung der Vorrichtung |
DE102008002020.6 | 2008-05-28 |
Publications (1)
Publication Number | Publication Date |
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WO2009149969A1 true WO2009149969A1 (de) | 2009-12-17 |
Family
ID=40689280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2009/053922 WO2009149969A1 (de) | 2008-05-28 | 2009-04-02 | Vorrichtung zur stabilisierung oxidierbarer flüssigkeiten sowie verwendung der vorrichtung |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN102046956A (de) |
DE (1) | DE102008002020A1 (de) |
RU (1) | RU2010153378A (de) |
WO (1) | WO2009149969A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102017100084A1 (de) * | 2017-01-04 | 2018-07-05 | L'orange Gmbh | Verfahren zum Aufbereiten eines Kraftstoffs, Kraftstoffaufbereitungsvorrichtung, Einspritzanlage und Verfahren zum Betreiben einer Einspritzanlage |
KR102331593B1 (ko) * | 2017-03-02 | 2021-11-26 | 로드리고 코키스 산체스-꼰샤 | 촉매 합금의 성능 최적화 및 탄화수소의 미생물 오염 물질 제거 특성 향상을 위한 유체 역학 시스템 |
DE102022203518A1 (de) | 2022-04-07 | 2023-10-12 | Mahle International Gmbh | Ringfilterelement |
Citations (4)
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WO2004044254A1 (en) * | 2002-11-14 | 2004-05-27 | Powerplus International Corporation Limited | Fuel additive comprising tin and antimony having an open aerated texture |
EP1705362A2 (de) * | 2005-03-22 | 2006-09-27 | Hachiro Maruchi | Brennstoffreformer |
WO2007062304A2 (en) * | 2005-11-23 | 2007-05-31 | Novus International, Inc. | Biodiesel fuel compositions having increased oxidative stability |
WO2007145738A1 (en) * | 2006-06-14 | 2007-12-21 | Chemtura Corporation | Antioxidant additive for biodiesel fuels |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1914999A (en) * | 1932-03-10 | 1933-06-20 | Standard Oil Dev Co | Filtering used motor oils |
US2249681A (en) * | 1936-04-01 | 1941-07-15 | Briggs Clarifier Company | Porous block filter in lubricating system of internal combustion engines |
US3617580A (en) * | 1968-12-16 | 1971-11-02 | Exxon Research Engineering Co | Lubricating oil treatment system |
DE19605431A1 (de) * | 1996-02-14 | 1997-08-21 | Fh Neffgen Gmbh Tech Zubehoer | Filter zur Absorption von Wasser aus Kraftstoffen |
JP2001020714A (ja) * | 1999-07-08 | 2001-01-23 | Toyo Roki Mfg Co Ltd | オイル酸化防止用部材 |
DE102004009907A1 (de) * | 2004-02-26 | 2005-09-29 | Mann + Hummel Gmbh | Flüssigkeitsfilter, insbesondere Ölfilter für eine Brennkraftmaschine |
US20070114165A1 (en) * | 2005-11-21 | 2007-05-24 | Buczynsky Andrew E | Fuel filter |
US20080078715A1 (en) * | 2006-10-03 | 2008-04-03 | Reid Jason W | Ion Exchange and Particulate Filter Assembly |
-
2008
- 2008-05-28 DE DE102008002020A patent/DE102008002020A1/de not_active Withdrawn
-
2009
- 2009-04-02 CN CN2009801194711A patent/CN102046956A/zh active Pending
- 2009-04-02 RU RU2010153378/06A patent/RU2010153378A/ru not_active Application Discontinuation
- 2009-04-02 WO PCT/EP2009/053922 patent/WO2009149969A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004044254A1 (en) * | 2002-11-14 | 2004-05-27 | Powerplus International Corporation Limited | Fuel additive comprising tin and antimony having an open aerated texture |
EP1705362A2 (de) * | 2005-03-22 | 2006-09-27 | Hachiro Maruchi | Brennstoffreformer |
WO2007062304A2 (en) * | 2005-11-23 | 2007-05-31 | Novus International, Inc. | Biodiesel fuel compositions having increased oxidative stability |
WO2007145738A1 (en) * | 2006-06-14 | 2007-12-21 | Chemtura Corporation | Antioxidant additive for biodiesel fuels |
Also Published As
Publication number | Publication date |
---|---|
DE102008002020A1 (de) | 2009-12-03 |
RU2010153378A (ru) | 2012-07-10 |
CN102046956A (zh) | 2011-05-04 |
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