WO2022096287A2 - Contacteur à membrane destiné au transfert de vapeur d'eau entre deux flux gazeux - Google Patents

Contacteur à membrane destiné au transfert de vapeur d'eau entre deux flux gazeux Download PDF

Info

Publication number
WO2022096287A2
WO2022096287A2 PCT/EP2021/079314 EP2021079314W WO2022096287A2 WO 2022096287 A2 WO2022096287 A2 WO 2022096287A2 EP 2021079314 W EP2021079314 W EP 2021079314W WO 2022096287 A2 WO2022096287 A2 WO 2022096287A2
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
gas
pockets
flow
contactor
Prior art date
Application number
PCT/EP2021/079314
Other languages
German (de)
English (en)
Other versions
WO2022096287A3 (fr
Inventor
Thomas Beeskow
Klaus Ohlrogge
Klaus-Viktor Peinemann
Rudolf Waldemann
Original Assignee
GMT Membrantechnik GmbH
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 GMT Membrantechnik GmbH filed Critical GMT Membrantechnik GmbH
Priority to CA3201325A priority Critical patent/CA3201325A1/fr
Priority to EP21802603.7A priority patent/EP4240519A2/fr
Publication of WO2022096287A2 publication Critical patent/WO2022096287A2/fr
Publication of WO2022096287A3 publication Critical patent/WO2022096287A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • B01D63/084—Flat membrane modules comprising a stack of flat membranes at least one flow duct intersecting the membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • B01D63/084—Flat membrane modules comprising a stack of flat membranes at least one flow duct intersecting the membranes
    • B01D63/085—Flat membrane modules comprising a stack of flat membranes at least one flow duct intersecting the membranes specially adapted for two fluids in mass exchange flow
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04126—Humidifying
    • H01M8/04149—Humidifying by diffusion, e.g. making use of membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/04—Specific sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/04—Specific sealing means
    • B01D2313/041—Gaskets or O-rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/08—Flow guidance means within the module or the apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/13—Specific connectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/14—Specific spacers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/22—Membrane contactor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1435—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification comprising semi-permeable membrane
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • Membrane contactor for transferring water vapor between two gas streams
  • the invention relates to a membrane contactor for transferring water vapor between two gas streams.
  • the membrane contactor can in particular be part of an air conditioning system or fuel cell.
  • gas flows have to be humidified or dehumidified in a controlled manner.
  • An example is air conditioning in stationary or mobile rooms.
  • humid outside air is cooled down to 15° C, for example, in warm seasons in order to reduce the humidity to a desired value.
  • the excess moisture condenses as liquid water.
  • the resulting condensation heat increases the energy required for cooling. If the excess moisture is reduced before the airflow is cooled, the air conditioning requires significantly less energy. This task can be solved advantageously with the help of a membrane contactor.
  • the heart of the contactor is a membrane that is ideally only permeable to water vapor but not to oxygen, nitrogen and other components such as odorous substances.
  • the humid outside air flows over one side of the membrane and is dried in the process, since water vapor permeates through the membrane due to a partial pressure drop.
  • the partial pressure drop is maintained by directing the drier room air as exhaust air in counter- or cross-flow across the back of the membrane.
  • the dry, cold outside air is humidified by the moist, warm flow of exhaust air from the interior.
  • heat is exchanged via the thin membrane, which further reduces the energy consumption. This procedure is known in principle.
  • the manufacturing effort, the manufacturing time, the costs and the size of conventional flat membrane contactors for humidification and dehumidification are high.
  • Fuel cells which are used, for example, to power motor vehicles used use an electrochemical reaction between hydrogen and oxygen to generate electrical energy.
  • the heart of the fuel cell is a polymer membrane, which has a high conductivity for protons; the membrane should be impermeable to hydrogen and oxygen. Likewise, the membrane must be an electrical insulator.
  • Hydrogen is supplied to the fuel cell on the anode side, and a catalyst splits it into protons and electrons. The protons migrate through the membrane to the cathode side, where they react with the oxygen supplied to form water.
  • the electrons required for this are supplied from the anode side via an external line. They generate an electric current that can be used to drive a motor vehicle, for example.
  • the polymer electrolyte membranes known today require moisture to ensure high proton conductivity.
  • the exhaust air stream on the cathode side contains large amounts of water vapor generated by the reaction of hydrogen and oxygen. Now, this exhaust air flow containing water vapor cannot simply be mixed with the dry supply air flow for the purpose of humidification, because the exhaust air flow from the fuel cell is greatly depleted in its oxygen content. A way must therefore be found to transfer only the water vapor from the exhaust air flow to the supply air flow without reducing the oxygen content of the supply air. This is exactly the task of the fuel cell humidifier.
  • the core of the contactor is a membrane that ideally is only permeable to water vapor but not to oxygen and nitrogen. If moist air flows over one side of the membrane and dry air flows over the other side, preferably in countercurrent, water vapor flows from the moist gas flow to the dry gas flow. This occurs even though the compressed dry air stream is normally at a higher pressure than the moist exhaust air stream from the fuel cell. The water vapor partial pressure difference is decisive for the water transport.
  • membrane contactors have long been known as humidifiers for fuel cells. Suitable membranes can be thin hollow Tubes (hollow thread membranes) or as flat membranes.
  • hollow-fiber membranes In the case of hollow-fiber membranes, it is relatively easy to implement a counterflow, for example moist gas on the outside, dry gas in the tube, but the manufacture of the hollow-fiber modules is complex.
  • the strands, combined into bundles, are potted at the ends, usually with a polyurethane or epoxy resin.
  • the process is labor and time intensive.
  • large bonding blocks are difficult to produce due to the heat of reaction of the curing adhesive components, which is difficult to dissipate - heating up to the point of damage to the hollow fibers is possible.
  • the present invention deals exclusively with the use of flat membranes.
  • Flat membrane contactors for humidifying fuel cells are known. Admittedly, bonding is used to a large extent in most constructions. This means high production costs, the humidifier cannot be dismantled without being destroyed and, as a result, it is not possible to replace defective membranes or other components.
  • the few contactor concepts for humidifiers that largely do without adhesives use a large number of seals.
  • a known membrane contactor for humidifying or dehumidifying gas flows is described in DE102009034095 A1, for example.
  • a large number of membranes lying one on top of the other are combined to form a stack.
  • Flow channels and sealing elements for the dry or moist gas are located alternately between each 2 membranes.
  • the flow channels for the moist or the dry gas are arranged at right angles to one another.
  • the array consists of a large number of planar elements held together by bonding.
  • DE102016224475 A1 also describes a membrane humidifier which comprises a plurality of stacked units placed one on top of the other.
  • Each individual stacking unit consists of a flow plate and a diffusion unit.
  • the diffusion unit consists of one or 2 diffusion layers and a water vapor permeable membrane.
  • Each diffusion unit also has two opposing receiving elements.
  • the diffusion layer and membrane are folded at the edges in such a way that a groove is formed into which the flow plate is inserted.
  • DE102012008197 A1 describes an exchange system for exchanging substances between two fluids, with a first space through which a first fluid can flow.
  • a channel labyrinth forms a second space, which extends at least partially through the first space and is designed so that a second fluid can flow through it.
  • the channel labyrinth is formed from a first permeable membrane and a membrane counterpart, the same being connected at predetermined lines or areas so that the channel labyrinth is formed between the first membrane and the membrane counterpart.
  • the flat membrane contactor for the transfer of water vapor between two gas streams according to claim 1 eliminates or at least reduces the disadvantages of the prior art.
  • the flat membrane contactor comprises: a) a stack of membrane pockets arranged in a housing, each membrane pocket having two membranes which are welded gas-tight at their edges and are selectively permeable to water vapor; b) guiding structures for a first gas flow through the flat membrane contactor, which are in flow communication with the interior of the membrane pockets via openings in the membrane pockets; and c) guiding structures for a second gas stream through the flat membrane contactor, which are designed to guide the second gas stream past the outside of the membrane pockets.
  • the membrane pockets are arranged in the stack in such a way that their openings are on top of each other.
  • the openings of the membrane pockets are provided with gas rings and the first gas flow is in flow communication with the interior of the membrane pockets via the gas rings.
  • a further aspect of the invention relates to an air conditioning system or a fuel cell with such a flat membrane contactor.
  • FIG. 1 shows an exemplary embodiment of a flat membrane contactor according to the invention in a partially exploded view.
  • FIG. 2 shows a membrane pocket that can be installed in the flat membrane contactor according to FIG.
  • FIG. 3 shows a distributor plate which can be located inside the membrane pocket from FIG.
  • FIG. 4 shows a distributor plate which, according to a further embodiment of the flat membrane contactor, is arranged between the individual membrane pockets.
  • the flat membrane contactor according to the invention for transferring water vapor between two gas streams comprises: a) a stack of membrane pockets arranged in a housing, each membrane pocket having two membranes welded at their edges which are selectively permeable to water vapor; b) guiding structures for a first gas flow through the flat membrane contactor, which are in flow communication with the interior of the membrane pockets via openings in the membrane pockets; and c) guiding structures for a second gas stream through the flat membrane contactor, which are designed to guide the second gas stream past the outside of the membrane pockets.
  • the membrane pockets are arranged in the stack in such a way that their openings are on top of each other.
  • the openings of the membrane pockets are provided with gas rings and the first gas flow is in flow communication with the interior of the gas rings membrane pockets.
  • the flat membrane contactor has a stack of membrane pockets as a core component.
  • a first gas flows through the membrane pockets on the inside, while the second gas flows along the membranes of the membrane pocket on the outside, preferably in countercurrent.
  • the desired water vapor exchange is made possible by the selective water vapor permeable membranes.
  • the flat membrane contactor includes the guide structures required to guide the two gas streams through the stack of membrane pockets.
  • a first guide structure guides a first gas through a flow path that runs through the interior of the membrane pockets.
  • the second gas follows a flow path that is predetermined by the second guide structure and runs along the outside of the membrane pockets.
  • the membranes of adjacent membrane pockets are not directly adjacent to one another, but allow the second gas to pass through.
  • the resulting, very compact structure consisting of few components reduces the manufacturing effort and the manufacturing time considerably.
  • gluing can be completely or largely dispensed with.
  • the process parameters volume flow, pressure, pressure loss over the process section, overflow speed of the membrane, selectivity and permeability of the membrane can be adapted.
  • the individual membrane pockets can be flown in parallel, in series or in a defined stack formation.
  • the membranes can be flown through one after the other in a meandering shape.
  • the individual compartments of a stack formation can be equipped with a different number of membrane pockets. In this way, for example, a uniform overflow of the membrane surface can also be achieved, for example as a function of the decrease in volume flow caused by the membrane permeability.
  • the water vapor-selective membrane used to produce the membrane pockets is preferably a multi-layer membrane.
  • the membrane can consist, for example, of a polymer fleece such as polyester or polyphenylene sulfide and in the second layer of a porous polymer such as polysulfone or polyimide.
  • the typically 10 to 100 pm thick polymer layer may have pores that decrease in pore diameter from side to side, with the smaller pore diameters being at the top of the membrane.
  • the water vapor permeable membrane can also consist of three or more layers. In this case, there is a macroporous polymer layer on the fleece, for example made of polysulfone, which is provided with a further, largely non-porous layer. This pore-free layer can consist of one or a composite of several polymer layers.
  • the membrane pockets are made by welding two membrane cutouts at the edges. This welding can be done thermally, by ultrasound or with the help of laser beams.
  • the membrane fleece can be on the inside of the bag or, if desired, on the outside. In the case of a two-layer membrane consisting of a nonwoven and a nanoporous membrane, the preferred configuration is an outer nonwoven.
  • the welding of the membranes be it thermal, using ultrasound or laser beams, is gas-tight. The welding process can be easily automated, is fast, and therefore suitable for mass production. In many cases it takes less than 30 seconds to seal a bag.
  • the membrane pockets are arranged in the stack in such a way that their openings are on top of each other. In this way, the necessary conducting structures for the first gas can be implemented in a particularly simple manner.
  • the openings in the individual membrane pockets are spaced as far as possible from one another in such a way that the gas can be guided over the entire width and length of the membrane pocket. As a rule, the openings for the entry and exit of the gas are therefore on opposite edges of the membrane pocket.
  • the openings of the membrane pockets are provided with gas rings and the first gas flow is in flow communication with the interior of the membrane pockets via the gas rings.
  • the openings for the entry and exit of the gas in the membrane pocket have an annular structure that encloses and runs around the edge of the opening and has flow channels through which the gas can flow in the radial direction.
  • a height of the gas rings lying one above the other preferably specifies a distance between the membrane pockets. In this way, a stack with a defined distance between the individual membrane pockets can be produced in a particularly simple manner.
  • the individual membrane pockets only have to be stacked one on top of the other with their gas rings and braced.
  • the gas rings lying one on top of the other preferably form distribution channels which represent the part of the guide structure for the first gas flow in the stack which establishes the flow connection with the interior of the membrane pockets.
  • the gas rings of the inlet and outlet openings of the stacked membrane pockets thus result in a distribution channel through which the first gas is supplied and discharged.
  • the gas rings are gas-tight against each other so that the first gas cannot escape laterally.
  • the distribution channels of the first conductive structure usually open into connection points that are accommodated in a cover of the housing.
  • the aforementioned distribution channels are open continuously or the flow path of the first gas stream through the membrane pockets is specified by deflection plates in the distribution channels.
  • all membrane pockets are flown through in parallel, which enables a very simple realization of the flat membrane contactor.
  • the second alternative provides for the gas flow to be deflected so that all membrane pockets are flown through in series, for example.
  • the deflection structures can also be designed in such a way that individual blocks are formed from a plurality of membrane pockets, which are admittedly flowed on in parallel, but within which the membrane pockets are traversed in series.
  • a further preferred embodiment provides for a distributor plate to be present inside the membrane pockets, and for this distributor plate to have webs on its upper and lower side, which define a flow path for the first gas stream.
  • the inner distributor plate not only serves to mechanically stabilize the membrane pocket. Rather, the webs on the surface serve to distribute the gas flow more evenly inside the membrane pocket and to create turbulence. The latter leads to a reduction in the boundary layer on the membrane, which is created by laminar flow and impedes the exchange of water vapor.
  • spacer and flow-influencing elements such as polymer spacers, for example net-like spacers made of polypropylene, can be present in the membrane pocket.
  • the guiding structures for the second gas stream comprise distributor plates which are arranged in the stack alternately with the membrane pockets.
  • Each distributor plate has webs, in particular on the upper and lower side, which define a flow path for the second gas stream via the distributor plate.
  • the distributor plates are located between the membrane pockets, and the second gas flow is conducted via the upper and lower sides of these plates. This further increases the mechanical stability of the stack.
  • the distributor plates enable a more even distribution of the gas flow over the outside of the membrane pockets, so that the water vapor exchange is promoted.
  • the separation result of a membrane unit also depends on the laminar boundary layer between the gas flow and the membrane surface being kept low when the membrane surface is flown over.
  • spacer and flow-influencing elements such as polymer spacers, for example net-like spacers made of polypropylene, can be present between the membrane pockets.
  • a cover plate of the housing advantageously has the connections for the guide structures of the first gas stream and the connections for the guide structures of the second gas stream, so that the manufacturing process is greatly simplified and a flat membrane contactor that is particularly compact in terms of installation space is provided.
  • the stack is introduced into the housing in such a way that two separate spaces result, which are only connected by the free spaces existing between the membrane pockets.
  • a connection for the second gas flow is provided in the cover plate above one space, whereas a corresponding outlet is integrated in the cover plate above the second space.
  • FIG. 1 shows an exemplary embodiment in a partially exploded view a flat membrane contactor 100.
  • the flat membrane contactor 100 comprises a module housing 10 which is closed with a cover plate 20.
  • a stack 40 of individual membrane pockets 50 is accommodated inside the housing 10 .
  • a membrane pocket 50 is shown in more detail in FIG.
  • the membrane pocket 50 has a hexagonally elongated basic shape, the width being selected such that the stack 40 bears largely sealingly against the side walls of the housing 10 .
  • the membrane pocket 50 comprises two membranes 52 which are welded to one another at the edges 54 .
  • the membranes 52 are selectively permeable to water vapor.
  • Each membrane pocket 50 has two openings 56, 58 which allow the inlet and outlet of a gas flow.
  • the inlet and outlet openings 56, 58 are provided with seals 60 and gas rings 62 which define the distance to adjacent membrane pockets 50, whereby the seals 60 and gas rings 62 can also be made as one piece.
  • the gas can get into the interior of the membrane pockets 50 through a large number of radial bores 64 in the gas rings 62 .
  • the gas rings 62 can be formed of metal or hard plastic.
  • a distributor plate 70 for example made of metal, can be embedded in the interior of the membrane pocket 50.
  • the surface of the inner distributor plate 70 is structured on both sides by a number of webs 72 .
  • the webs 72 serve to evenly distribute the gas flow inside the membrane pocket 50 and are intended at the same time to generate turbulence which counteracts the formation of a laminar boundary film on the membranes 52 and thus facilitates the exchange of water vapor through the membrane 52 .
  • a large number of membrane pockets 50 are stacked one on top of the other, with the openings 56, 58 lying one on top of the other.
  • the inlet and outlet openings 56, 58 thereby form an inlet and outlet distribution channel for either the first gas or the second gas.
  • the stack 40 constructed in this way is located in the module housing 10 with the cover plate 20.
  • the membrane stack 40 is held in the distributor channels by two diagonally offset tie rods each comprising a rod 90 and an end piece 92.
  • the cover plate 20 has a circumferential seal and can also be reinforced with snap fasteners. It is equipped with an inlet opening 21 and an outlet opening 22 for the second gas and an inlet port 23 and an outlet port 24 for the first gas.
  • a first guide structure for a first gas flow therefore comprises the two inlet and outlet openings 23, 24 in the cover plate 20, the continuous distribution channels resulting from the openings 56, 58 of the membrane pockets 50 lying one above the other, and the inner paths in the individual membrane pockets 50.
  • a second guide structure for the second gas flow comprises the two inlet and outlet openings 21, 22 in the cover plate 20 and the adjoining spaces inside the module housing 10, which in the example are limited by walls of the module housing 10 and the stack 40 are. Furthermore, these spaces are in flow connection with one another via the stack 40, ie the second gas stream entering through the opening 21 is passed between the module pockets 50 along the membranes 52 through the stack 40. Accordingly, water vapor can be exchanged between the two gas streams.
  • the gas containing a lot of water vapor flows through the interior of the membrane pockets 50.
  • the flow path for the moist gas thus follows the first guiding structure.
  • gas containing little or no water vapor follows a flow path in counterflow, which is predetermined by the second guide structure.
  • the dry gas flows past the outside of the membranes 52 of the membrane pockets 50 and absorbs moisture.
  • operation is also conceivable in which the dry gas flows through the interior of the membrane pockets 50 and the moist gas flows countercurrently between the membrane pockets 50 .
  • a distributor plate 80 can be arranged between each of the membrane pockets 50 of the stack 40 .
  • the distributor plate 80 serves to distribute the gas stream flowing along the membranes 52 of the membrane pockets 50 more evenly.
  • the top and bottom of the distributor plate 80 have a multiplicity of webs 82 which define channels for the gas flow.
  • the channels increase the turbulence and thus keep the extent of the concentration polarization at the membranes 52 small, so that the exchange of water vapor is improved.
  • an edge seal 84 (on both sides) is provided, which prevents potential losses due to an edge flow.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un contacteur à membrane destiné au transfert de vapeur d'eau entre deux flux gazeux. Le contacteur à membrane peut notamment constituer une partie d'une installation de climatisation ou d'une pile à combustible. Le contacteur à membrane plane comprend : a) un empilement de poches membranaires disposé dans un boîtier, chaque poche membranaire présentant deux membranes dont les bords sont soudés de manière étanche au gaz et qui sont perméables sélectivement à la vapeur d'eau ; b) des structures de guidage destinées à un premier flux gazeux parcourant le contacteur à membrane plane, et en liaison fluidique avec l'intérieur des poches membranaires par l'intermédiaire d'orifices ménagés dans les poches membranes ; et c) des structures de guidage destinées à un deuxième flux gazeux parcourant le contacteur à membrane plane et conçues pour amener le deuxième flux gazeux à contourner les poches membranaires par l'extérieur. Les poches membranaires sont empilées de manière à ce que leurs orifices coïncident. Les orifices des poches membranaires sont pourvus de structures annulaires pour gaz et le premier flux gazeux est en communication fluidique avec l'intérieur des poches membranes par l'intermédiaire des structures annulaires pour gaz.
PCT/EP2021/079314 2020-11-09 2021-10-22 Contacteur à membrane destiné au transfert de vapeur d'eau entre deux flux gazeux WO2022096287A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA3201325A CA3201325A1 (fr) 2020-11-09 2021-10-22 Contacteur a membrane destine au transfert de vapeur d'eau entre deux flux gazeux
EP21802603.7A EP4240519A2 (fr) 2020-11-09 2021-10-22 Contacteur à membrane destiné au transfert de vapeur d'eau entre deux flux gazeux

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020129403.4 2020-11-09
DE102020129403.4A DE102020129403A1 (de) 2020-11-09 2020-11-09 Membrankontaktor zur Übertragung von Wasserdampf zwischen zwei Gasströmen

Publications (2)

Publication Number Publication Date
WO2022096287A2 true WO2022096287A2 (fr) 2022-05-12
WO2022096287A3 WO2022096287A3 (fr) 2022-08-11

Family

ID=78528894

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/079314 WO2022096287A2 (fr) 2020-11-09 2021-10-22 Contacteur à membrane destiné au transfert de vapeur d'eau entre deux flux gazeux

Country Status (4)

Country Link
EP (1) EP4240519A2 (fr)
CA (1) CA3201325A1 (fr)
DE (1) DE102020129403A1 (fr)
WO (1) WO2022096287A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3139246A1 (fr) * 2022-08-31 2024-03-01 Sogefi Filtration Humidificateur d’air pour pile à combustible

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009034095A1 (de) 2008-07-23 2010-03-11 GM Global Technology Operations, Inc., Detroit WVT-Konstruktion für reduzierte Masse und verbesserte Abdichtzuverlässigkeit
DE102012008197A1 (de) 2012-04-26 2013-10-31 Al-Ko Kober Ag Austauschsystem zum Austausch von Stoffen zwischen zwei Fluiden
DE102016224475A1 (de) 2016-12-08 2018-06-14 Bayerische Motoren Werke Aktiengesellschaft Membranbefeuchter, vorzugsweise für ein Brennstoffzellensystem

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8337473U1 (de) * 1983-04-30 1985-04-18 Gkss - Forschungszentrum Geesthacht Gmbh, 2054 Geesthacht Membrankissen
FR2698436B1 (fr) * 1992-11-20 1995-03-03 Seccacier Echangeur massique et thermique à plaques poreuses.
DE10209918A1 (de) 2002-03-07 2003-09-25 Geesthacht Gkss Forschung Vorrichtung zum Aufbereiten und Trennen von insbesondere biologisch organischen Strömungsmedien
DE102004051671A1 (de) * 2004-10-22 2006-04-27 Microdyn-Nadir Gmbh Vorrichtung zum Filtern von Stoffen aus Flüssigkeiten
JP2006156099A (ja) * 2004-11-29 2006-06-15 Mitsubishi Electric Corp 加湿器およびその製造方法
WO2012084960A1 (fr) * 2010-12-21 2012-06-28 Statkraft Development As Système à membrane pour osmose retardée par pression (pro)
CN104508417B (zh) * 2012-06-11 2017-03-29 7Ac技术公司 用于湍流式耐腐蚀的热交换器的方法和系统
US20180320988A1 (en) * 2017-05-02 2018-11-08 Dais Analytic Corporation Compact membrane-based heat and mass exchanger
DE102019217301A1 (de) * 2018-11-16 2020-06-04 Mahle International Gmbh Befeuchtungsmodul zum Befeuchten eines Fluids
DE102019200451A1 (de) * 2019-01-16 2020-07-16 Audi Ag Befeuchtermodul mit eingenähtem Flussfeld, Befeuchter, Verfahren zur Herstellung eines Befeuchtermoduls und Verfahren zur Herstellung eines Befeuchters

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009034095A1 (de) 2008-07-23 2010-03-11 GM Global Technology Operations, Inc., Detroit WVT-Konstruktion für reduzierte Masse und verbesserte Abdichtzuverlässigkeit
DE102012008197A1 (de) 2012-04-26 2013-10-31 Al-Ko Kober Ag Austauschsystem zum Austausch von Stoffen zwischen zwei Fluiden
DE102016224475A1 (de) 2016-12-08 2018-06-14 Bayerische Motoren Werke Aktiengesellschaft Membranbefeuchter, vorzugsweise für ein Brennstoffzellensystem

Also Published As

Publication number Publication date
WO2022096287A3 (fr) 2022-08-11
DE102020129403A1 (de) 2022-05-12
EP4240519A2 (fr) 2023-09-13
CA3201325A1 (fr) 2022-05-12

Similar Documents

Publication Publication Date Title
DE112005001084B4 (de) Gasseparator und Verfahren zu dessen Betrieb
DE10102447B4 (de) Befeuchter zur Verwendung mit einer Brennstoffzelle
DE112004000908T5 (de) Befeuchtungsvorrichtung
DE102005037485A1 (de) Befeuchter und Verfahren zu dessen Herstellung
DE102014006394A1 (de) Befeuchter für eine Brennstoffzelle
DE102017201814A1 (de) Strömungsplatte für einen Befeuchter
WO2017167925A1 (fr) Couche de diffusion gazeuse
WO2004028671A1 (fr) Dispositif permettant l'échange d'humidité entre un flux de gaz humide et un flux de gaz sec
DE102020134182A1 (de) Feuchtetauscher, insbesondere befeuchter für eine brennstoffzelle, und brennstoffzellensystem
DE102012218303A1 (de) Verfahren zur Herstellung einer Befeuchtungseinrichtung zur Befeuchtung von Prozessgasen sowie Befeuchtungseinrichtung
DE102014205029A1 (de) Konditionierungseinheit zur Konditionierung eines Betriebsmediums sowie Brennstoffzellenanordnung mit einer solchen
WO2018055132A1 (fr) Plaque d'écoulement pour un humidificateur
WO2022096287A2 (fr) Contacteur à membrane destiné au transfert de vapeur d'eau entre deux flux gazeux
DE19743067A1 (de) Strömungsmodul mit Strömungskammern für drei oder vier Fluide
DE102014006465A1 (de) Befeuchtungseinrichtung, beispielsweise für eine Brennstoffzelle
DE102014006464A1 (de) Befeuchtungseinrichtung beispielsweise für eine Brennstoffzelle
WO2015110236A1 (fr) Échangeur d'humidité et ensemble pile à combustible comprenant un tel échangeur d'humidité
EP4008035B1 (fr) Humidificateur, dispositif de pile à combustible comprenant un humidificateur et véhicule à moteur
DE102014009326B4 (de) Befeuchtungseinrichtung, beispielsweise für eine Brennstoffzelle
DE102019205814A1 (de) Konditionierungsvorrichtung sowie Brennstoffzellenvorrichtung mit einer solchen
DE102020111347A1 (de) Feuchteübertragungsschicht, Speicherbefeuchter, Brennstoffzellenvorrichtung und Kraftfahrzeug
DE102019211583A1 (de) Verfahren zur Herstellung eines Befeuchters sowie Befeuchter
DE102019126308A1 (de) Befeuchter, Brennstoffzellenvorrichtung sowie Kraftfahrzeug mit einer Brennstoffzellenvorrichtung
DE102005025914A1 (de) Feuchtetauscher in Brennstoffzellenanordnungen
DE102019205809A1 (de) Flussfeldplatte, Brennstoffzellenstapel mit einer Flussfeldplatte und Brennstoffzellensystem

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21802603

Country of ref document: EP

Kind code of ref document: A2

ENP Entry into the national phase

Ref document number: 3201325

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2021802603

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2021802603

Country of ref document: EP

Effective date: 20230609