WO2007128656A1 - Dispositif pour régler la pureté du gaz dans un réservoir à gaz - Google Patents

Dispositif pour régler la pureté du gaz dans un réservoir à gaz Download PDF

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Publication number
WO2007128656A1
WO2007128656A1 PCT/EP2007/053730 EP2007053730W WO2007128656A1 WO 2007128656 A1 WO2007128656 A1 WO 2007128656A1 EP 2007053730 W EP2007053730 W EP 2007053730W WO 2007128656 A1 WO2007128656 A1 WO 2007128656A1
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WO
WIPO (PCT)
Prior art keywords
gas
filter
acid
valve
shut
Prior art date
Application number
PCT/EP2007/053730
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German (de)
English (en)
Inventor
Werner Gruenwald
Thorsten Allgeier
Kai Oertel
Ian Faye
Stephan Leuthner
Jan-Michael Graehn
Markus Schubert
Ulrich Mueller
Michael Hesse
Original Assignee
Robert Bosch Gmbh
Basf Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh, Basf Aktiengesellschaft filed Critical Robert Bosch Gmbh
Publication of WO2007128656A1 publication Critical patent/WO2007128656A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C11/00—Use of gas-solvents or gas-sorbents in vessels
    • F17C11/005—Use of gas-solvents or gas-sorbents in vessels for hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C11/00—Use of gas-solvents or gas-sorbents in vessels
    • F17C11/007—Use of gas-solvents or gas-sorbents in vessels for hydrocarbon gases, such as methane or natural gas, propane, butane or mixtures thereof [LPG]

Definitions

  • pressurized gas tanks are generally used today. Compressed gas tanks can be used both in stationary applications, for example for heating buildings or in mobile applications, for example in gas-powered motor vehicles. With regard to the mobile applications of pressurized gas tanks, the gas tanks are generally designed for a system pressure of 200 bar and are installed in a gaseous fuel-powered motor vehicle. The disadvantage here is the fact that special safety requirements are made of gas-powered vehicles. Another disadvantage in particular with regard to the mobile applications of pressurized gas tanks is the fact that due to safety regulations for gas tanks for motor vehicles, the gas tanks are usually designed as a cylindrical pressure vessel, the permissible capacity is only 80% of the available space. The remaining portion of the existing volume of the compressed gas storage serves as an expansion space for the gas.
  • gaseous fuel forms with air a particularly good mixture and is characterized by a lower pollutant emission.
  • Gaseous fuel is largely free of lead and sulfur compounds and has very good combustion properties with excellent mixture formation and distribution, which has an even stronger effect at low temperatures.
  • condensable fractions may condense in the gaseous fuel, such as, for example, higher molecular weight hydrocarbons such as butane under pressure at the bottom of the gas reservoir and lead to a change in the calorific value of the gas at Gasent-.
  • Adsorption storage becomes the gas to be stored to materials with a large internal surface, such as adsorbed zeolites and stored in this way.
  • impurities such as water vapor or higher molecular weight hydrocarbons occupy adsorption sites and thereby reduce the storage capacity of the adsorption of Adsorptions notess.
  • WO 97/36819 an apparatus and a method for storage for the release of hydrogen from a hydrogen storage is known.
  • the hydrogen gas is stored in a rechargeable storage and released by it. If necessary, the hydrogen gas can be taken out of the hydrogen storage.
  • a solid-state storage medium is added, which is in the form of a metal hydride in particulate form and does not require any treatment steps such as compaction or the like.
  • the hydrogen storage is subdivided into separate chambers, each containing a matrix formed by a suitable material, such as thermally conductive aluminum foam, which forms a number of cells.
  • the ratio of the chamber length to the diameter of the hydrogen storage is preferably between 0.5 and 2.
  • the hydrogen storage device has a hydrogen extraction line, through which the hydrogen gas flows when discharged from the hydrogen storage or when feeding to the hydrogen storage.
  • a filter which retains the metal hydride particles contained in the cells and prevents them from affecting the hydrogen gas in terms of its purity.
  • a heat transfer surface is formed by a channel which is thermally coupled to the aluminum foam.
  • the present invention has for its object to supply a gas storage, in particular an adsorption only storage gas such as natural gas or city gas, which is free of impurities.
  • this object is achieved in that a gas storage for receiving gaseous fuel, such as CH 4 or another gas, for example, for industrial applications, a particular heatable filter is connected upstream.
  • the gas flowing into the gas storage is disturbing before entering the gas storage Contaminants, such as CO 2 , CO and moisture, analyzed.
  • the gas flowing in from a gas station for filling the gas reservoir passes to the gas reservoir via a first shut-off valve and the filter and another shut-off valve arranged between the filter and the gas reservoir. If the filter effect no longer exists due to an overload of the filter material with contaminants, the first shut-off valve and the second shut-off valve upstream of the gas reservoir can be closed. This ensures that only such gas enters the gas storage, which has a prescribed purity and quality.
  • the blocking of the first, upstream of the filter shut-off valve and the second gas storage upstream shut-off valve via a control unit is connected to a gas sensor connected downstream of the filter and to a gas sensor arranged downstream of the gas extraction valve of the gas reservoir.
  • shut-off valves upstream of the filter and the gas accumulator are closed.
  • the filter can be provided with a heating device in order to expel the combustible gases retained therein from the filter and feed them via a metering valve to the consumer, such as, for example, a gaseous fuel-burning internal combustion engine.
  • a heating device in order to expel the combustible gases retained therein from the filter and feed them via a metering valve to the consumer, such as, for example, a gaseous fuel-burning internal combustion engine.
  • the filter which may optionally be associated with a heating device for expelling higher molecular weight C x H 5 , may in the simplest case be designed as a cold trap.
  • the design of the gas storage upstream filter as activated carbon filter is possible.
  • metal oxides such as ALO2, molecular sieves, zeolites or activated carbon can be used.
  • a calorific value or calorific value sensor can be used to control the calorific value upstream of this consumer.
  • calorific value or calorific value sensors in front of the consumer, such as an internal combustion engine, to use surface acoustic wave sensors, which detect higher molecular weight hydrocarbons C x H 5 , before flowing into the gas reservoir via the mass occupancy of the sensor surface.
  • the first and second shut-off valve may be present in the extending from the filter to the metering line before the consumer and behind the metering another gas quality sensor.
  • This may likewise be a calorific value or calorific value sensor, or a surface acoustic wave sensor or the like.
  • the measures described above with reference to a gas storage for mobile applications can be used instead of, for example, a gas-powered motor vehicle or even stationary gas storage, such as industrial gas storage.
  • the measures can also be carried out on a gas storage reservoir, for example, at a gas station, in particular if the storage of gaseous fuel provided there is a sorption reservoir.
  • Sorptions appointment be it a gas storage for mobile applications such as in the car, for stationary applications fertilize such as a storage tank at a gas station or for industrial purposes, come in Sorptions appointed sorption, such as zeolites and especially Metal Organic Frameworks as sorbent materials in question ,
  • the gas quality sensor which is connected downstream of the filter, can also be used without a filter in order to protect a gas reservoir received in the motor vehicle from being filled with poor quality gaseous fuel, which can be caused, for example, by a greasy gas station compressor, in which the gaseous fuel is loaded with oil fractions which may attach to the sorbent material within the gas reservoir.
  • the sorbent material which is preferably Metal Organic Frameworks, has a high specific surface area of at least 1000 m 2 / g, to which the gaseous fuel attaches. This surface must be kept free of impurities such as CO 2 , CO or moisture or the like in order to keep constant the storage capacity of the sorbent material, which is preferably MOF, over the operating time.
  • the preferred filter used may have an exchange cartridge that is easily replaceable when the filter effect is exhausted.
  • the filter can be configured as a double filter, in which a part of the double filter is regenerated, while the others can be used.
  • the filter can be regenerated by the heating shown above, ie the higher molecular weight hydrocarbons C x H 5 accumulating in the filter can be expelled therefrom by the heating device optionally assigned to the filter.
  • FIG. 2 shows the benzene desorption on a second metal organic framework, plotted over the desorption time and upon impressing a temperature gradient
  • FIG. 3 shows the octane sorption on a first metal organic framework, plotted over the desorption time and upon impressing a temperature gradient
  • FIG. 4 shows the octane sorption on the 2nd Metal Organic Framework, plotted over the desorption time and impressing a temperature gradient
  • FIG. 5 is a circuit diagram of a gas storage, in particular a Sorptions Lances with upstream filter element and
  • Figure 6 shows another embodiment of the interconnection of the gas storage.
  • the porous organometallic framework contains at least one at least one metal ion coordinated at least bidentate organic compound.
  • This organometallic framework (MOF) is described, for example, in US 5,648,508, EP-A-0 790 253, M. O-Keeffe et al, J. Sol. State Chem., JJ2 (2000), pages 3 to 20, H. Li et al., Nature 402 (1999), page 276, M. Eddaoudi et al., Topics in Catalysis 9 (1999), pages 105 to 111, Chen et al., Science 291 (2001), pages 1021 to 1023 and DE-A-101 11 230.
  • MOF organometallic framework
  • the MOFs according to the present invention contain pores, in particular micro and / or mesopores.
  • Micropores are defined as those having a diameter of 2 nm or smaller and mesopores are defined by a diameter in the range of 2 to 50 nm, each according to the definition as described by Pure Applied Chem. 45_, page 71, in particular on page 79 (FIG. 1976).
  • the presence of micro- and / or mesopores can be checked by means of sorption measurements, these measurements determining the uptake capacity of the organometallic frameworks for nitrogen at 77 Kelvin according to DIN 66131 and / or DIN 66134.
  • the specific surface area - calculated according to the Langmuir model (DIN 66131, 66134) for a MOF in powder form is preferably more than 5 m 2 / g, more preferably more than 10 m 2 / g, more preferably more than 50 m 2 / g , more preferably more than 500 m 2 / g, even more preferably more than 1000 m 2 / g and particularly preferably more than 1500 m 2 / g.
  • MOF shaped bodies can have a lower specific surface; but preferably more than 10 m 2 / g, more preferably more than 50 m 2 / g, even more preferably more than 500 m 2 / g and in particular more than 1000 m 2 / g.
  • the metal component in the framework of the present invention is preferably selected from Groups Ia, IIa, IHa, IVa to Villa and Ib to VIb. Particularly preferred are Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Re, Fe, Ru, Os, Co, Rh, Ir, Ni , Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Al, Ga, In, Tl, Si, Ge, Sn, Pb, As, Sb and Bi. More preferred are Zn, Cu, Mg, Al, Ga, In, Sc, Y, Lu, Ti, Zr, V, Fe, Ni, and Co.
  • Cu, Zn, Al, Fe, and Co. are particularly preferred.
  • At least bidentate organic compound refers to an organic compound containing at least one functional group capable of having at least two, preferably two coordinative, bonds to a given metal ion, and / or to two or more, preferably two, metal atoms, respectively form a coordinative bond.
  • Functional groups by means of which the abovementioned coordinative bonds can be formed include in particular, for example, the following functional groups: CO 2 H, -CS 2 H, -NO 2 , -B (OH) 2 , -SO 3 H, -Si (OH) 3 , -Ge (OH) 3 , -Sn (OH) 3 , -Si (SH ) 4, - Ge (SH) 4, -Sn (SH) 3, -PO 3 H, -AsO 3 H, -AsO 4 H, -P (SH) 3, -As (SH) 3, -CH (RSH ) 2 , -C (RSH) 3 -CH (RNH 2 ) 2 -C (RNH 2 ) 3 , -CH (ROH) 2 , -C (ROH) 3 , -CH (RCN) 2 , -C (RCN) 3 where R preferably represents an alkylene group having 1, 2, 3, 4 or 5 carbon atoms
  • functional groups are to be mentioned in which the abovementioned radical R is absent.
  • the at least two functional groups can in principle be bound to any suitable organic compound as long as it is ensured that the organic compound having these functional groups is capable of forming the coordinative bond and the preparation of the framework.
  • the organic compounds containing the at least two functional groups are derived from a saturated or unsaturated aliphatic compound or an aromatic compound or an aliphatic as well as an aromatic compound.
  • the aliphatic compound or the aliphatic portion of the both aliphatic and aromatic compound may be linear and / or branched and / or cyclic, wherein also several cycles per compound are possible. More preferably, the aliphatic compound or the aliphatic portion of the both aliphatic and aromatic compound contains 1 to 15, more preferably 1 to 14, further preferably 1 to 13, further preferably 1 to 12, further preferably 1 to 11 and particularly preferably 1 to 10 C atoms such as 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 C atoms. Methane, adamantane, acetylene, ethylene or butadiene are particularly preferred in this case.
  • the aromatic compound or the aromatic part of both aromatic and aliphatic compound may have one or more cores, such as two, three, four or five cores, wherein the cores may be separated from each other and / or at least two nuclei in condensed form.
  • the aromatic compound or the aromatic part of both aliphatic and aromatic matic compound one, two or three cores, with one or two cores are particularly preferred.
  • each nucleus of the named compound may contain at least one heteroatom, such as, for example, N, O, S, B, P, Si, Al, preferably N, O and / or S.
  • the aromatic compound or the aromatic portion of the both aromatic and aliphatic compound contains one or two C ⁇ cores, the two being either separately or in condensed form.
  • benzene, naphthalene and / or biphenyl and / or bipyridyl and / or pyridyl may be mentioned as aromatic compounds.
  • the at least bidentate organic compound is particularly preferably derived from a di-, tri- or tetracarboxylic acid or its sulfur analogs.
  • the term "derive" in the context of the present invention means that the at least bidentate organic compound can be present in the framework material in partially deprotonated or completely deprotonated form. Furthermore, the at least bidentate organic compound may contain further substituents, such as -OH, -NH 2 , - OCH 3 , -CH 3 , -NH (CH 3 ), -N (CH 3 ) 2 , -CN and halides.
  • dicarboxylic acids such as oxalic acid, succinic acid, tartaric acid, 1,4-butanedicarboxylic acid, 4-oxo-pyran-2,6-dicarboxylic acid, 1,6-hexanedicarboxylic acid, decanedicarboxylic acid, 1,8-heptadecanedicarboxylic acid, are examples of the present invention.
  • Tricarboxylic acids such as
  • 1,1-dioxide-per [1,12-BCD] thiophene-3,4,9,10-tetracarboxylic acid perylenetetracarboxylic acids such as perylene-3,4,9,10-tetracarboxylic acid or perylene-1,15-sulfone-3, 4,9,10-tetracarboxylic acid, butanetetracarboxylic acids such as 1,2,3,4-butanetetracarboxylic acid or meso-1,2,3,4-butanetetracarboxylic acid, decane-2,4,6,8-tetracarboxylic acid, 1,4,7, 10,13,16-
  • each of the cores can contain at least one heteroatom, where two or more nuclei have identical or different heteroatoms may contain.
  • monocarboxylic dicarboxylic acids preference is given to monocarboxylic dicarboxylic acids, monocarboxylic tricarboxylic acids, monocarboxylic tetracarboxylic acids, dicercaric dicarboxylic acids, dicercaric tricarboxylic acids, dicercaric tetracarboxylic acids, tricyclic dicarboxylic acids, tricarboxylic tricarboxylic acids, tricarboxylic tetracarboxylic acids, tetracyclic dicarboxylic acids, tetracyclic tricarboxylic acids and / or tetracyclic tetracarboxylic acids.
  • Suitable heteroatoms are, for example, N, O, S, B, P, Si, Al. Preferred heteroatoms here are N, S and / or O.
  • a suitable substituent in this regard is, inter alia, -OH, a nitro group, an amino group or an alkyl to name or alkoxy.
  • At least bidentate organic compounds are acetylenedicarboxylic acid (ADC), benzenedicarboxylic acids, naphthalenedicarboxylic acids, biphenyldicarboxylic acids such as 4,4'-biphenyldicarboxylic acid (BPDC), bipyridine dicarboxylic acids such as 2,2'-bipyridinedicarboxylic acids such as 2,2 '-Bipyridin-
  • benzene tricarboxylic acids such as 1,2,3-benzenetricarboxylic acid or 1,3,5-benzenetricarboxylic acid (BTC), adamantane tetracarboxylic acid (ATC), adamantane dibenzoate (ADB) benzene tribenzoate (BTB), methanetetrabenzoate (MTB), adamantane trenches - zoate or dihydroxyterephthalic acids such as 2,5-dihydroxyterephthalic acid
  • DVBDC used. Isophthalic acid, terephthalic acid, 2,5-dihydroxyterephthalic acid, 1,2,3-benzenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid or 2,2-bipyridine-5,5'-dicarboxylic acid are very particularly preferably used.
  • the MOF may also comprise one or more monodentate ligands.
  • Suitable solvents for the preparation of the MOF include ethanol, dimethylformamide, toluene, methanol, chlorobenzene, diethylformamide, dimethyl sulfoxide, water, hydrogen peroxide, methylamine, sodium hydroxide, N-methylpolidone ether, acetonitrile, benzyl chloride, triethylamine, ethylene glycol and mixtures hereof.
  • Further metal ions, at least bidentate organic compounds and solvents for the preparation of MOF are described inter alia in US Pat. No. 5,648,508 or DE-A 101 11 230.
  • the pore size of the MOF can be controlled by choice of the appropriate ligand and / or the at least bidentate organic compound. Generally, the larger the organic compound, the larger the pore size.
  • the pore size is preferably from 0.2 nm to 30 nm, more preferably the pore size is in the range from 0.3 nm to 3 nm, based on the crystalline material.
  • pores also occur whose size distribution can vary.
  • more than 50% of the total pore volume, in particular more than 75%, of pores having a pore diameter of up to 1000 nm is formed.
  • a majority of the pore volume is formed by pores of two diameter ranges. It is therefore further preferred if more than 25% of the total pore volume, in particular more than 50% of the total pore volume, is formed by pores which are in a diameter range of 100 nm to 800 nm and if more than 15% of the total pore volume, in particular more than 25% of the total pore volume is formed by pores in a diameter range of up to 10 nm.
  • the pore distribution can be determined by means of mercury porosimetry.
  • FIG. 1 shows the desorption of benzene on a first metal organic framework, such as, for example, cu-benzenetricarboxylic acid, plotted over the desorption time and upon impressing a temperature gradient.
  • a first metal organic framework such as, for example, cu-benzenetricarboxylic acid
  • FIG. 1 shows a desorption time, designated by reference numeral 10, in minutes.
  • FIG. 2 shows a desorption curve of benzene on a second metal organic framework, plotted over the desorption time and the temperature.
  • reference numeral 10 denotes the desorption time
  • reference numeral 20 denotes the temperature scale
  • the second maximum 36 which is shown in FIG. 2, finds its cause in a condensation process, which can be caused, for example, by an overdose.
  • FIG. 4 shows the desorption course of octane on a second metal organic framework, plotted over the desorption time and the temperature.
  • the illustration according to FIG. 5 shows that a filter 46 is preceded by a filter 46.
  • the filter 46 may be equipped as an activated carbon filter, as a cold trap or with a replaceable filter cartridge. If the filter effect of the filter cartridge used in the filter 46 exhausted, this can be easily replaced.
  • a filter 46 provided with an exchangeable replacement cartridge it is also possible to use a double filter, wherein one filter element of the double filter is used in each case and that in each case another can be regenerated, for example via an optional heating device 48.
  • the waste heat of the internal combustion engine for example via its heated cooling medium for heating the filter 46 or for regeneration of an unused part, of a filter 46 designed as a double filter could also be used.
  • the heated cooling medium of the internal combustion engine heats up the used part of a filter 46 in the form of a double filter. If adequate regeneration by heating alone is not possible, backwashing can be carried out during heating.
  • filter materials in addition to the already mentioned activated carbon and zeolites or metal organic framework such as MOF's in question.
  • filter material other suitable filter material can be used in the filter 46 in addition to the sorption material, such as metal oxide (A-102) and molecular sieves.
  • sorbent material 82 is not mandatory.
  • the filter 46 is connected upstream of a first shut-off valve 44;
  • the reference numeral 42 designates a gas station-side supply or a connection for a stationary gas storage 41. Between the filter 46 and the gas reservoir 41 there is a first gas quality sensor 52 and a second, the gas reservoir 41 upstream second shut-off valve 54.
  • a sorbent material 82 which is preferably a Metal Organic Framework (MOF).
  • the gas reservoir 41 is emptied via a gas extraction valve 56.
  • filter 46 From optionally provided with a heater 48 filter 46 extends a line for expelling high molecular hydrocarbon vapors C x H 5 , to a metering valve 50, which opens behind the gas sampling valve 56 and a second gas quality sensor 48 in a consumer line 80.
  • the consumer line 80 can For example, in mobile applications to a gaseous fuel operated internal combustion engine of a motor vehicle extend.
  • the gas evacuation valve 56 connected downstream of the gas accumulator 41 can be dispensed with.
  • the second shut-off valve 54 and the metering valve 60 are designed as a 3/2-way valve, which are connected via line 50 directly to each other.
  • a control unit 78 The interaction of the illustrated valves 44, 54, 56 and 60 can be coordinated by a control unit 78.
  • a signal line 64 extends from the second gas quality sensor 58.
  • a signal line 70 extends to the control unit 78 from the first gas quality sensor 52.
  • a control line 66 extends to the gas sampling valve 56, a control line 62 to the metering and each a control line 68 and 74 to the second shut-off valve 54 and the first shut-off valve 44, which is upstream of the filter 46.
  • a drive line 76 extends to the connection point of a refueling unit.
  • communication i. E. establish a data exchange between the control unit 78 and the gas station.
  • a signal for switching off the refueling process can be transmitted via the control line 76 when the tank is completely filled. Furthermore, a signal can be transmitted via the control line 76, which indicates the need for a filter change in the filter 46 and a signal which initiates a closing of a valve.
  • both the first shut-off valve 44 and the second shut-off valve 54 in front of the gas reservoir 41 are closed via the control lines 68 and 74. This ensures that only such gas enters the gas reservoir 41, which has a predefinable gas quality.
  • the filter 46 can be regenerated by means of a heater 46 optionally assigned to the filter 46.
  • the high molecular weight gases retained in the filter 46 can operate be passed via the line 50 to the metering valve 60.
  • the filter 46 is heated by the heater 48, or ügber the cooling medium with which the internal combustion engine is cooled.
  • the supply of heated cooling medium to the heater 48 can be controlled via a thermostat.
  • a plurality of filters 46 can be arranged one behind the other or parallel to one another, through which the gaseous fuel flows.
  • their filter parts can in each case be flowed through alternately, wherein the respective unused filter part can be regenerated within the scope of a heating process by a separate heating device 48 or the heated cooling medium of the internal combustion engine.
  • both the first shut-off valve 44 in front of the filter 46 and the second shut-off valve 54 in front of the gas reservoir 41 are closed.
  • the vapors of relatively high molecular weight hydrocarbons C x H 5 are fed into the consumption line 80.
  • a calorific value or calorific value sensor can be used to control the calorific value and a surface acoustic wave sensor can be used as the second gas quality sensor 58.
  • the second gas sensor 58 By means of the second gas sensor 58, depending on the embodiment of the sensor, a mass occupation of the sensor surface with relatively high molecular weight hydrocarbons C x H 5 can be detected.
  • the filter 46 may be required to control the gas quality during operation, a further gas quality sensor 58 in front of the consumer.
  • the further, second gas quality sensor 58 can be both a calorific value sensor and a calorific value sensor or the aforementioned surface acoustic wave sensor.
  • the filter material of the filter 46 which material may be activated carbon zeolites or also a sorbent material 82 such as the first MOF or the second MOF, and the second shut-off valve 54 is prevented from being contained in the gaseous fuel Impurities storage places for a gaseous Occupy fuel such as CH 4 on the sorbent material 82 in the interior of the gas storage 41, ie, the storage capacity seen over the operating time of the gas storage 41, steadily decreases.
  • the high molecular hydrocarbons C x H 5 retained in the filter 46 are nevertheless made accessible for recycling in a consumer by feeding them via the metering valve 60 into the consumer line 80, for example in the event the internal combustion engine of a gaseous fuel vehicle has warmed up.
  • gas storage 41 serving, for example, as a tank in a motor vehicle for receiving gaseous fuel
  • gas storage 41 which is provided in the context in question with a sorbent 82 such as Cu-MOF or Zn-MOF, for example, can serve as a storage for gaseous fuel at a gas station or used as a gas storage tank for industrial applications become.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

la présente invention concerne un procédé et un dispositif pour régler la pureté du gaz lors du remplissage d'un réservoir à gaz (41) dans lequel se trouve un agent de sorption (82). Dans le réservoir à gaz se trouve un filtre (46) qui peut être chauffé, dont la matière filtrante peut être régénérée ou échangée. Une première soupape d'arrêt (44) est connectée en amont du filtre (46) et une seconde soupape d'arrêt (54) est connectée en amont du réservoir à gaz (41). Les hydrocarbures CxHy à masse molaire plus élevée retenus dans le filtre (46) sont réintroduits dans un récepteur en contournant le réservoir à gaz (41), et alimentent une conduite de réception (80).
PCT/EP2007/053730 2006-05-04 2007-04-17 Dispositif pour régler la pureté du gaz dans un réservoir à gaz WO2007128656A1 (fr)

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DE102006020849.8 2006-05-04
DE200610020849 DE102006020849A1 (de) 2006-05-04 2006-05-04 Vorrichtung zur Regelung der Gasreinheit für einen Gasspeicher

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DE102007058671B4 (de) * 2007-12-06 2016-04-28 Basf Se Verfahren zur Regelung der Gasentnahme und Vorrichtung zur Speicherung mindestens eines Gases

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WO1997036819A1 (fr) 1996-04-01 1997-10-09 Westinghouse Savannah River Company Procede et dispositif de stockage et de degagement d'hydrogene
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