WO2005096423A2 - Dispositif filtrant, en particulier pour un empilement de cellules electrochimiques - Google Patents

Dispositif filtrant, en particulier pour un empilement de cellules electrochimiques Download PDF

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Publication number
WO2005096423A2
WO2005096423A2 PCT/EP2005/001902 EP2005001902W WO2005096423A2 WO 2005096423 A2 WO2005096423 A2 WO 2005096423A2 EP 2005001902 W EP2005001902 W EP 2005001902W WO 2005096423 A2 WO2005096423 A2 WO 2005096423A2
Authority
WO
WIPO (PCT)
Prior art keywords
filter
fuel cell
cell stack
feed line
filter device
Prior art date
Application number
PCT/EP2005/001902
Other languages
German (de)
English (en)
Other versions
WO2005096423A3 (fr
Inventor
Wolfram Kaiser
Markus Watzlawski
Original Assignee
Behr Gmbh & Co. Kg
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 Behr Gmbh & Co. Kg filed Critical Behr Gmbh & Co. Kg
Priority to EP05715486A priority Critical patent/EP1730805A2/fr
Publication of WO2005096423A2 publication Critical patent/WO2005096423A2/fr
Publication of WO2005096423A3 publication Critical patent/WO2005096423A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/003—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid
    • B01D46/0031—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid with collecting, draining means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/80—Chemical processes for the removal of the retained particles, e.g. by burning
    • B01D46/84—Chemical processes for the removal of the retained particles, e.g. by burning by heating only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2267/00—Multiple filter elements specially adapted for separating dispersed particles from gases or vapours
    • B01D2267/40—Different types of filters

Definitions

  • the invention relates to a filter device, in particular for a fuel cell stack, according to the preamble of claim 1.
  • part of the enthalpy of reaction converted can be obtained directly as electrical current.
  • a polymer electro-fuel cell essentially consists of a polymer membrane functioning as an electrolyte, which separates the reactants hydrogen and oxygen and has (H + -) proton conductivity, and two electrodes covered with catalyst material, the
  • Electrodes and polymer membrane are usually compacted into a membrane electrode assembly (MEA).
  • MEA membrane electrode assembly
  • bipolar plates are used which consist of electrically conductive material and are provided with gas distributor structures which enable the reaction products and reaction products to be transported in and out.
  • the distributor structures in the individual fuel cells usually have a meandering geometry in order to optimally supply the MEA with the operating media and to enable inexpensive removal.
  • a technical fuel single cell thus consists of an MEA and two bipolar plates which are supplied with the operating media via supply connections and through which the water of reaction is discharged and which can transport the electrical current occurring during the process.
  • a stack structure which is also referred to as a fuel cell stack, consists of one or more planar individual fuel cells stacked on top of one another and arranged in an electrical series connection.
  • Ports which are passed axially through the stack structure which and which supply the individual fuel cells with the operating media through channel structures branching off laterally via branch lines.
  • the filtering process takes place through a filter which is arranged between two sections of the feed line 102 in a housing 101 between the fuel cell stack 103 and the air compressor 104 or fan (in the case of low-pressure cells), the air from the environment, designated by reference numeral 105 in FIG. 3.
  • a main line (not shown) with the above-mentioned stub lines and channel structures is provided in the interior of the fuel cell stack 103.
  • a filter device for filtering an operating medium, which is fed to the fuel cell stack is provided with a filter, in which the filter is integrated in particular in the feed line running outside the fuel cell stack.
  • the filter is integrated in particular in the feed line running outside the fuel cell stack.
  • the filter is preferably arranged coaxially to the feed line, a gap being provided between the outer surface of the filter and the wall of the feed line, so that filtering can take place over the largest possible area.
  • the positioning is preferably carried out by means of support and positioning elements arranged in the gap, which ensure a central arrangement.
  • the support and positioning elements can be formed on the inner wall of the feed line and / or on the outer wall of the filter and / or can be formed by separately designed elements, in particular attached to the filter. They are particularly in the longitudinal direction running ribs arranged in a star shape are suitable.
  • the channels arranged between the individual ribs can be connected by means of interruptions of the ribs, so that flow compensation is possible in order to compensate for a pressure drop, for example as a result of a filter cake which has grown strongly on one side.
  • Four ribs are preferably provided at equidistant intervals. Distributed knobs are also possible, whereby the filter area can be kept as large as possible.
  • the filter preferably has a hollow cylindrical profile, but other configurations are also possible in principle.
  • a cleaning device is preferably provided, which is formed in particular by the filter being electrically heatable.
  • the filter can be arranged in a replaceable module, so that it can be replaced easily and without damage during installation.
  • the exchangeable module can in particular be formed by the corresponding part of the feed line forming the filter device with the filter arranged therein and corresponding connections to the blower or the blower-side feed line and to the fuel cell stack.
  • the filter is preferably hygroscopic at least in some areas and / or has capillaries which absorb the condensation water which occurs and / or enable the operating medium to be moistened, in particular in the starting phases of the fuel cell stack.
  • a prefilter can be arranged in front of the fuel cell stack, which filters out, in particular, larger particles, so that the filter inside the fuel cell stack can fulfill its function for as long as possible.
  • the filter can also protrude into the fuel cell stack and be at least partially received in a main line provided therein.
  • FIG. 1 shows a schematic illustration of a filter according to the first exemplary embodiment
  • 2b shows a schematic illustration of the partially cut-open fuel cell stack without illustration of the filter
  • Fig. 3 is a schematic representation of a conventional filter device according to the prior art.
  • a fuel cell stack 1 as indicated in FIGS. 1 and 2b, consists of a plurality of individual fuel cells, which in turn are constructed from two bipolar plates and an MEA arranged between them (not shown).
  • the individual fuel cells are supplied with operating media, in particular with coolant, and also hydrogen (H 2 ) and air (in particular 0 2 ), which are used for the above, via one or more, common main lines 3 and branches 4 leading from them in the form of branch lines described reaction are required. Only the main air supply line 3 is discussed below.
  • a filter 5 for filtering the ambient air serving as the operating medium is hollow-cylindrical, the air to be filtered flowing through the filter 5 in the longitudinal direction and exiting through the side walls over essentially the entire length and the entire circumference of the hollow cylinder.
  • the hollow cylindrical filter 5 is arranged approximately concentrically in a likewise substantially cylindrical feed line 6, with an annular gap being provided between the outer surface of the filter 5 and the inner surface of the feed line 6, apart from support and positioning elements (not shown), so that one is possible large discharge area is guaranteed.
  • the filter 5 has approximately the same length as the supply line 6, seals being provided at the front and rear ends of the filter 5 and the supply line 6 opening directly into the main line 3 of the fuel cell stack 1.
  • the filter can be heated electrically and consists of a temperature-resistant filter material. If the pressure drop rises above a predetermined value due to a growing filter cake or if renewal is necessary due to saturation of the filter with pollutants, a reversal of the gas flow in connection with the heating of the filter can "burn off" the pollutants and / or filtered out particles
  • the arrangement of the filter in the supply line of the operating medium to the fuel cell stack corresponds to that of the first exemplary embodiment.
  • a prefilter is arranged in front of a filter device according to one of the previously described exemplary embodiments, the arrangement and structure of the prefilter corresponding to that according to the prior art.
  • a prefilter is particularly useful for operating media heavily and / or contaminated with large particles, so that is preferred a pre-cleaning takes place in a coarse pre-filter and the fine filter inside the fuel cell stack is not clogged by coarse particles.
  • the pre-filter can also be designed to be self-cleaning.
  • the hollow cylindrical filter is designed to be extended in such a way that it projects into the main line of the fuel cell stack via the feed line, so that according to this exemplary embodiment, too, only a flow cross-section that is smaller and therefore smaller Transition increasing pressure drop from supply line to filter or fuel cell housing is provided.
  • the filter and the hose are preferably designed to be elastic, so that an optimal and flexible adaptation to the available installation space is possible with an enlarged filter area.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Fuel Cell (AREA)
  • Filtration Of Liquid (AREA)

Abstract

L'invention concerne un dispositif filtrant destiné à filtrer un fluide de travail amené à un empilement de cellules électrochimiques (1) par l'intermédiaire d'une conduite d'alimentation (6). Ce dispositif filtrant comporte au moins un filtre (5), ledit filtre (5) étant intégré dans la conduite d'alimentation (6) ou au moins une partie de cette conduite d'alimentation (6).
PCT/EP2005/001902 2004-03-18 2005-02-24 Dispositif filtrant, en particulier pour un empilement de cellules electrochimiques WO2005096423A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05715486A EP1730805A2 (fr) 2004-03-18 2005-02-24 Dispositif filtrant, en particulier pour un empilement de cellules electrochimiques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004013689A DE102004013689A1 (de) 2004-03-18 2004-03-18 Filtervorrichtung, insbesondere für einen Brennstoffzellenstapel
DE102004013689.0 2004-03-18

Publications (2)

Publication Number Publication Date
WO2005096423A2 true WO2005096423A2 (fr) 2005-10-13
WO2005096423A3 WO2005096423A3 (fr) 2006-06-29

Family

ID=34962070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/001902 WO2005096423A2 (fr) 2004-03-18 2005-02-24 Dispositif filtrant, en particulier pour un empilement de cellules electrochimiques

Country Status (3)

Country Link
EP (1) EP1730805A2 (fr)
DE (1) DE102004013689A1 (fr)
WO (1) WO2005096423A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1911503A2 (fr) * 2006-09-27 2008-04-16 Mann+Hummel Gmbh Dispositif de filtrage, en particulier destiné à la filtration d'air de combustion dans des moteurs à combustion interne
WO2012130436A1 (fr) * 2011-03-29 2012-10-04 Daimler Ag Moteur à combustion interne de véhicule automobile ayant un filtre d'huile
CN115121080A (zh) * 2022-08-05 2022-09-30 大连一元氢能源科技有限公司 一种应用于燃料电池电堆的化学过滤装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013014236A1 (de) 2013-08-27 2015-03-05 Daimler Ag Filtervorrichtung
DE102018212418A1 (de) * 2018-07-25 2020-01-30 Bayerische Motoren Werke Aktiengesellschaft Brennstoffzellensystem und Verfahren zum Entfernen von Schadstoffen
DE102018219201A1 (de) 2018-11-12 2020-05-14 Audi Ag Brennstoffzellenvorrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE826089C (de) * 1950-05-14 1951-12-27 Alfred Honsel Nieten U Metallw Luftfilter fuer Brennkraftmaschinen, insbesondere fuer Fahrzeugmotoren
US3991724A (en) * 1974-03-01 1976-11-16 Universal Oil Products Company Apparatus for moisture addition to engine air-fuel input
US5902365A (en) * 1995-08-16 1999-05-11 Purolator Products Company Filter hose assembly employing a conical filter element
US6432177B1 (en) * 2000-09-12 2002-08-13 Donaldson Company, Inc. Air filter assembly for low temperature catalytic processes
US20020157359A1 (en) * 2001-04-11 2002-10-31 Eivind Stenersen Filter assemblies and systems for intake air for fuel cells
US6638330B1 (en) * 1999-12-15 2003-10-28 Bmc S.R.L. Device for filtering the intake air of internal combustion engines
DE10230283A1 (de) * 2002-07-05 2004-01-29 Daimlerchrysler Ag Verfahren und Anordnung zum Reinigen der einer Brennstoffzelle für den Betrieb zuzuführenden Gase von Bestandteilen, die für den Brennstoffzellenbetrieb ungünstig sind

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE826089C (de) * 1950-05-14 1951-12-27 Alfred Honsel Nieten U Metallw Luftfilter fuer Brennkraftmaschinen, insbesondere fuer Fahrzeugmotoren
US3991724A (en) * 1974-03-01 1976-11-16 Universal Oil Products Company Apparatus for moisture addition to engine air-fuel input
US5902365A (en) * 1995-08-16 1999-05-11 Purolator Products Company Filter hose assembly employing a conical filter element
US6638330B1 (en) * 1999-12-15 2003-10-28 Bmc S.R.L. Device for filtering the intake air of internal combustion engines
US6432177B1 (en) * 2000-09-12 2002-08-13 Donaldson Company, Inc. Air filter assembly for low temperature catalytic processes
US20020157359A1 (en) * 2001-04-11 2002-10-31 Eivind Stenersen Filter assemblies and systems for intake air for fuel cells
DE10230283A1 (de) * 2002-07-05 2004-01-29 Daimlerchrysler Ag Verfahren und Anordnung zum Reinigen der einer Brennstoffzelle für den Betrieb zuzuführenden Gase von Bestandteilen, die für den Brennstoffzellenbetrieb ungünstig sind

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1911503A2 (fr) * 2006-09-27 2008-04-16 Mann+Hummel Gmbh Dispositif de filtrage, en particulier destiné à la filtration d'air de combustion dans des moteurs à combustion interne
EP1911503A3 (fr) * 2006-09-27 2008-08-13 Mann+Hummel Gmbh Dispositif de filtrage, en particulier destiné à la filtration d'air de combustion dans des moteurs à combustion interne
US7799110B2 (en) 2006-09-27 2010-09-21 Mann+Hummel Gmbh Filter apparatus especially for filtration of combustion air in internal combustion engines
WO2012130436A1 (fr) * 2011-03-29 2012-10-04 Daimler Ag Moteur à combustion interne de véhicule automobile ayant un filtre d'huile
CN115121080A (zh) * 2022-08-05 2022-09-30 大连一元氢能源科技有限公司 一种应用于燃料电池电堆的化学过滤装置

Also Published As

Publication number Publication date
DE102004013689A1 (de) 2005-11-10
WO2005096423A3 (fr) 2006-06-29
EP1730805A2 (fr) 2006-12-13

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