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WO2018146182A1 - Brûleur à injecteur pour système de piles à combustible - Google Patents

Brûleur à injecteur pour système de piles à combustible Download PDF

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Publication number
WO2018146182A1
WO2018146182A1 PCT/EP2018/053138 EP2018053138W WO2018146182A1 WO 2018146182 A1 WO2018146182 A1 WO 2018146182A1 EP 2018053138 W EP2018053138 W EP 2018053138W WO 2018146182 A1 WO2018146182 A1 WO 2018146182A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling fluid
injector
burner
fuel cell
cell system
Prior art date
Application number
PCT/EP2018/053138
Other languages
German (de)
English (en)
Inventor
Vincent Lawlor
Robert Pöschl
Julian MAKINSON
Michael Reissig
Original Assignee
Avl List 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 Avl List Gmbh filed Critical Avl List Gmbh
Publication of WO2018146182A1 publication Critical patent/WO2018146182A1/fr

Links

Classifications

    • 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
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
    • H01M8/04022—Heating by combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts
    • 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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • H01M2008/1293—Fuel cells with solid oxide electrolytes
    • 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
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
    • H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
    • 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
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • H01M8/0618—Reforming processes, e.g. autothermal, partial oxidation or steam reforming
    • 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

  • the present invention relates to a burner for heating at least one functional unit of a fuel cell system, a fuel cell system, in particular a SOFC system, with such a burner and a method for cooling an injector in the fuel cell system.
  • a starting burner is typically used in a starting operation of a fuel cell system.
  • an operating fluid can be heated by the starting burner, which in turn heats an afterburner of the fuel cell system.
  • the afterburner is arranged to heat a reformer of the fuel cell system usually in the vicinity of this reformer, by means of the heated by the starting burner operating fluid and the reformer can be heated.
  • a heated reformer can be operated more efficiently and effectively.
  • hydrocarbon-containing fuel is injected via an injector into an injection region of a heating section of the starting burner.
  • the fuel can, depending on the design of the starting burner, be burned with flame or catalytically.
  • high temperatures can occur in the heating section and thus also in the injection area. This can lead to damage or destruction of the injector. Accordingly, an injector should always be protected from high temperatures in adjacent sections in the fuel cell system.
  • European Patent Application EP 1 447 874 A2 discloses an SOFC system with an integrated reformer unit.
  • the reformer unit comprises a hydrocarbon fuel reformer, an integrated exhaust and cathode air burner, a reformer heat exchanger, a fuel preheater, a fuel radiator, a fuel injector, a reformer air preheater heat exchanger, a reformer air temperature control valve and a pre-reformer start-up burner.
  • an injector is arranged axially in front of a mixing chamber or preheating chamber, the injector injecting fuel through an axial bore of an annular heat exchanger into the mixing chamber.
  • the heat exchanger is made massive or has a correspondingly high thermal conductivity.
  • heat generated in the preheat chamber can be quickly transported to the vicinity of the preheat chamber. Nevertheless, this can promote a high heat dissipation from the preheating chamber in the direction of the injector.
  • this should be avoided.
  • the heat exchanger could be actively cooled. However, this would require a corresponding cooling device and thus a more complex overall system, which moreover would have a correspondingly high energy requirement.
  • Object of the present invention is to at least partially overcome the disadvantages described above.
  • a burner for heating at least one functional unit of a fuel cell system is provided.
  • the burner has a heating section with an injection area and a combustion area.
  • the burner has an injector with a fluid outlet for injecting an operating fluid into the injection region of the heating section.
  • the combustion region is configured to combust the operating fluid injected by the injector.
  • a thermal insulation device is provided between the heating section and the injector and / or at least in sections along the injector Cooling fluid channel arranged to conduct cooling fluid for cooling the injector.
  • the injector can be effectively protected from heat from the heating section or the combustion area.
  • thermal insulation in the intermediate section does not cause heat accumulation in the heating section, which could adversely affect the fuel cell system.
  • a passive heat protection for the injector can be provided, whereby the injector can be correspondingly simple and inexpensive protected against overheating.
  • protection against overheating of the injector can also be achieved by arranging along the same, at least in sections, a cooling fluid channel for conducting cooling fluid for cooling the injector. It can be particularly favorable if both an insulating device and a cooling channel are provided. By virtue of this supplementary, active cooling possibility, the injector can be even better protected against excessive heat input, in particular from the heating section.
  • cooling fluid channel is arranged at least in sections along the injector
  • the cooling fluid channel may extend axially and / or radially along the Injector or outside of the injector or in the vicinity of the injector along.
  • the insulating device has a higher thermal resistance than the heating section and the combustion region and the injector.
  • the heat resistance in the intermediate section in the region of the insulating device is greater than in a region in which the insulating device is not configured. More specifically, the heat transfer resistance at a surface of the insulating device facing the heating portion is larger than at an end portion of the heating portion facing the insulating device.
  • the insulating device can directly adjoin the heating section.
  • the insulating device by a defined distance, for example in a range between 1 mm and 20 mm, in particular in a range between 1 mm and 10 mm, from the heating section, in particular from the combustion region or from the injection area, spaced. This area may contain air and / or a solid. By the spacing, a further thermal insulation layer can be created between the injector and the heating section or the combustion zone.
  • the operating fluid can be understood as an operating fluid mixture.
  • the operating fluid preferably comprises hydrocarbonaceous fuel, for example methane.
  • the burner is preferably designed as a starting burner for heating an afterburner of the fuel cell system.
  • the burner is designed as a starting burner for heating an afterburner, by which in turn a reformer of the fuel cell system can be heated.
  • the starting burner it is possible by the starting burner to bring an entire fuel cell system or components of a fuel cell system to a predetermined operating temperature.
  • the combustion region preferably includes a catalyst for catalytic combustion of the operating fluid.
  • the combustion region can also have a resistance heating device, for example in the form of a heating coil or a heating plate.
  • the combustion region for burning the injected operating fluid Ignition means for generating a spark by which the operating fluid is flammable.
  • the injection area has at least one fluid opening, through which the operating fluid can be injected into the injection area or the heating section.
  • at least one further fluid inlet can be configured in the injection region, by means of which a further operating fluid can be introduced into the injection region.
  • the further operating fluid may be air or another oxygen-containing fluid which can be mixed with the fuel in the injection area for combustion in the combustion area.
  • a region of the intermediate section downstream of the fluid outlet is to be understood as a region which is located in a projection of the injector in the direction of injection and in addition to the projection of the injector downstream of the fluid outlet. That is, the intermediate portion is not limited to projection of the injector in the injection direction, but is also understood to be radially outside of this projection.
  • the insulating device has at least one passage opening through which the operating fluid can be injected from the fluid outlet into the injection area.
  • the at least one passage opening is to be understood as part of the insulating device.
  • the at least one passage opening preferably adjoins the fluid opening of the injection area.
  • the region of the insulating device which adjoins the passage opening or is formed as a passage opening is designed, in particular, metal-free or approximately metal-free, so that a particularly direct thermal bridge is at least for the most part avoided. As a result, cooling of the injector and / or the injection area is further improved.
  • the at least one functional unit can be understood to mean an afterburner and / or a reformer of the fuel cell system. If the burner is designed in the form of a starting burner, the at least one functional unit can be understood to mean an afterburner and a reformer, since the starting burner is designed to heat the afterburner and thereby also to heat the reformer. If the burner is designed in the form of an afterburner or in the form of a start burner integrated in the afterburner, the at least one functional unit can be understood to mean the reformer.
  • the injector may be a standard injector used in the automotive industry for injecting fuel into a combustion chamber. The injector can also be designed as a nozzle.
  • the insulating device comprises insulating material or at least essentially consist of insulating material which has a thermal conductivity of ⁇ ⁇ 1 W / (m ⁇ K), in particular ⁇ ⁇ 0.1 W / ( m - K).
  • the insulating material preferably has a porous structure with a multiplicity of air chambers, in particular between chains of amorphous silicon accumulations with a particle size of 5 to 25 nm.
  • the insulating material therefore preferably has a microporous structure.
  • Such an insulating material may have a thermal conductivity of ⁇ ⁇ 0.05 W / (m ⁇ K). This allows a particularly good thermal insulation can be achieved, which also has a high reliability in the fuel cell system.
  • the insulating device in the case of a burner according to the invention, it is possible for the insulating device to be of annular design and to be arranged relative to the injector such that the injection direction of the injector extends through a passage opening of the annular insulating device. Due to the annular configuration of the insulating device, the injector, which generally has a round or substantially round cross-section, can be protected in a particularly good and space-saving manner against excessive heat input.
  • the annular isolation device is preferably at least partially disposed downstream of the injector such that an injection cone of the operating fluid injected into the injection area by the injector substantially injects the operating fluid into the isolation device in an exit region of the passage opening at an end of the isolation device has the same diameter or approximately the same diameter as the passage opening.
  • the injector is approximately maximally shielded by the insulating device in the injection direction, whereby the injector can be particularly effectively protected against excessive heat input from the heating section.
  • the insulating device in the injection direction of the injector has an insulating thickness and the fluid outlet and the injection area in the injection direction to the Isoliervor- directional thickness or further apart. Thereby, a certain basic distance between the heating section and the injector can be ensured, by which a corresponding thermal insulation is achieved.
  • the fluid outlet or injector outlet is thereby spaced in the injection direction at least by the length or depth of the passage opening from the heating section, whereby the Injektorauslass can be protected from too high heat load by the heating section.
  • the insulating device thickness is adapted to a maximum value of a possible cooling capacity of the cooling fluid.
  • the greater the insulation thickness the better the protection against overheating of the injector.
  • the insulating device thickness be as small as possible.
  • the cooling fluid channel in a burner according to the invention is arranged at least in sections in the circumferential direction around the injector, in particular by more than 180 ° around the injector. More specifically, the cooling fluid passage is preferably disposed around the injector such that the cooling fluid passage defines a cooling fluid directing direction that extends radially about the injector, preferably at least 180 °. As a result, an effective thermal shielding and cooling of the injector can be achieved.
  • the cooling fluid channel has a cooling fluid inlet for guiding a cooling fluid into the cooling fluid channel and a cooling fluid outlet for conducting the cooling fluid out of the cooling fluid channel, wherein an input coupling section for mechanically coupling the cooling fluid inlet to the cooling fluid inlet Cooling fluid supply line is configured and at the cooling fluid output, an output coupling portion for mechanically coupling the cooling fluid output is configured with a cooling fluid discharge line.
  • the cooling fluid channel can be provided as a compact component in the burner or on the heating section. For active cooling operation on the injector, only the appropriate cooling fluid lines need to be connected thereto.
  • the cooling fluid outlet and the cooling fluid inlet are designed in particular as channels or channel sections.
  • the cooling fluid channel is configured in a fastening body, which is fixed to the heating section, in particular at the injection area. Thereby, the cooling fluid channel can be particularly easily and safely positioned in the burner.
  • the heating section preferably has a housing unit, on which the fastening body is fixed.
  • the fastening body is preferably a one-piece, substantially one-piece and / or monolithic component.
  • the cooling fluid channel can be designed as a separate cooling fluid channel in the fastening body.
  • the cooling fluid channel is configured by the fastening body itself.
  • space, material and thus costs can be saved.
  • the fastening body is preferably screwed to the heating section or the housing unit. Thereby, a simple, for a disassembly or an inspection detachable, mechanical connection between the mounting body and the heating section can be provided.
  • the insulating device for thermal insulation of the cooling fluid channel is at least partially disposed between the combustion region and the cooling fluid channel.
  • the cooling fluid channel can be protected from excessive heating by the heating section.
  • the cooling function of the cooling fluid channel can be ensured thereby.
  • the insulating section has the same or a larger diameter than the cooling fluid channel orthogonally to the injection direction.
  • the injector and / or the insulating device are mounted in a mounting body which is fixed to the heating section.
  • the injector and / or the insulating device can be mounted in the burner in a particularly accurate position.
  • the injector is preferably mounted in such a way that the fluid outlet or injector outlet does not directly adjoin the passage opening of the insulating device. That is, there is a gap between the injector outlet and the passage opening.
  • the injector is at an end face, on which the Injektorauslass is configured, preferably at least partially from the mounting body comprises, in particular such that only the Injektorauslass is exposed. Thereby the injector can be particularly effectively protected from the heat in the heating section.
  • the fixing body forms a partition wall between the insulating device and the injection area. As a result, the insulating device can be protected against mechanical damage.
  • a burner according to the invention can dispense with the insulating device and to design only the cooling fluid channel described in detail above along the injector.
  • a cooling fluid channel for guiding cooling fluid for cooling the injector is arranged at least in sections along the injector. It is also possible that in such a burner, the cooling fluid channel at least partially in the circumferential direction around the injector around, in particular by more than 180 ° around the injector around, is arranged.
  • the cooling fluid channel can have a cooling fluid inlet for guiding a cooling fluid into the cooling fluid channel and a cooling fluid outlet for guiding the cooling fluid out of the cooling fluid channel, wherein an inlet coupling section for mechanically coupling the cooling fluid inlet to a cooling fluid supply line is configured on the cooling fluid inlet and Cooling fluid output an output coupling portion for mechanically coupling the cooling fluid output is configured with a cooling fluid discharge line.
  • the cooling fluid channel is configured in a fastening body which is fixed to the heating section.
  • a fuel cell system having a burner as described above.
  • the fuel cell system has a reformer which can be heated directly or indirectly by the burner, wherein the burner is designed in the form of a starting burner or in the form of an afterburner.
  • the fuel cell system according to the invention also brings about the same advantages as have been described in detail above with reference to the burner according to the invention. If the burner is designed in the form of the afterburner, the afterburner can fulfill the function of the starting burner. That is, in such an afterburner, a starting burner with the features according to the invention is integrated.
  • a cooling fluid supply line to be mechanically coupled via the input coupling section to the cooling fluid inlet of the cooling fluid channel and for a cooling fluid discharge line to be mechanically coupled via the outlet coupling section to the cooling fluid outlet of the cooling fluid channel, wherein the cooling fluid supply line is provided with a cooling fluid supply line
  • Cooling fluid source for conducting cooling fluid in the form of air in the cooling fluid channel is in fluid communication.
  • the cooling fluid source is an air source, in particular a source of fresh air or compressed air, and the cooling fluid is air.
  • cooling liquid of a passenger car or commercial vehicle can also be used as cooling fluid.
  • the injector can be cooled in a particularly simple and cost-effective manner and correspondingly efficiently protected against overheating.
  • the cooling fluid supply line may also be in communication with a source of cooling fluid from or for a motor vehicle.
  • a cooling fluid supply line is mechanically coupled via the input coupling section to the cooling fluid inlet of the cooling fluid channel and a cooling fluid discharge line is mechanically coupled via the output coupling section to the cooling fluid outlet of the cooling fluid channel, wherein the cooling fluid Outlet line is in fluid communication with a heat exchanger of the fuel cell system. This allows the air that has passed the injector near the heating section to be used in the heat exchanger. This can increase the efficiency of the fuel cell system.
  • a method for cooling an injector in a fuel cell system as described above, wherein during operation of the fuel cell system, a cooling fluid, in particular in the form of air, is passed through the cooling fluid passage at least in sections along the injector.
  • a cooling fluid in particular in the form of air
  • the cooling fluid is preferably passed through an air source, such as a fresh air or compressed air source, through the cooling fluid supply line during operation of the fuel cell system the cooling fluid channel at least partially along the injector further passed through the cooling fluid discharge line to the heat exchanger.
  • FIG. 1 shows a block diagram for illustrating a fuel cell system according to an embodiment of the invention
  • FIG. 2 shows a burner according to an embodiment of the present invention
  • FIG. 3 shows an overview with a burner according to the invention, a reformer and an afterburner for explaining a possible mode of operation of the burner.
  • FIG. 1 is a block diagram illustrating a fuel cell system 1000 having a starting burner 100 (burner).
  • the fuel cell system 1000 further includes an afterburner 200 and a reformer 300.
  • the afterburner 200 is disposed annularly around the reformer 300 to heat the reformer 300.
  • the starting burner 100 is arranged and configured for heating the afterburner 200 and thus for indirectly heating the reformer 300. Accordingly, the starting burner 100 is located upstream of the afterburner 200.
  • the starting burner 100 and the afterburner 200 are shown separated from each other.
  • the starting burner 100 is designed as an integral unit of the afterburner 200.
  • the fuel cell system 1000 can be made even more compact. the.
  • the cooling system according to the invention is particularly advantageous for carrying. 1 is configured as an SOFC system (SOFC stands for solid oxide fuel cell) downstream of the reformer 300 is a fuel cell stack 400 having an anode region 410 and a cathode region 420.
  • a fuel mixture, produced by the reformer 300 is directed to the anode region 410.
  • Anode exhaust gas is passed into the afterburner 200 where combustion of the anode exhaust gas heats the reformer 300.
  • the afterburner 200 For combustion in the afterburner 200, it has an afterburner catalyst 230 (see US Pat The burned anode exhaust gas is passed from the reformer 300 to a heat exchanger 500. From there, the exhaust gas is conducted into the environment of the fuel cell system via an evaporator 600. Via the heat exchanger 500, heated air is supplied to the cathode region 420 Cathode exhaust gas is also the afterburner 200 z u matter.
  • the starting burner 100 has a cooling fluid channel 40.
  • the cooling fluid channel 40 is in fluid communication with a cooling fluid source in the form of an air source 800 via a cooling fluid supply line 910. Furthermore, the cooling fluid channel 40 is in fluid communication with the heat exchanger 500 with a cooling fluid discharge line 920.
  • the starting burner 100, the afterburner 200, the reformer 300 and the evaporator 600 are located in the fuel cell system in a so-called heating or hot box 700, in which a compact heat transfer between the respective components can be made possible.
  • the related functions of starting burner 100, afterburner 200 and reformer 300 will be described in detail later with reference to FIG.
  • FIG. 2 shows a starting burner 100 (burner) for heating an afterburner 200 and a reformer 300 in a fuel cell system 1000.
  • the starting burner 100 has a heating section 10 with an injection region 11 and a combustion region 12.
  • the combustion region 12 includes a catalyst 60 for catalytic combustion of the operating fluid F1.
  • the starting burner 100 has an injector 20 with a fluid outlet 21 or injector. outlet for injecting an operating fluid F1 into the injection area 1 1 of the heating section 10, the combustion section 12 configured to burn the operating fluid F1 injected by the injector 20.
  • a thermal insulation isolator 30 is interposed between the heating portion 10 and the injector 20.
  • the intermediate portion 50 is located between the dashed lines shown in FIG. Via a fluid inlet 80, another operating fluid F2, in this case air or an oxygen-containing fluid, can be introduced into the injection area 11.
  • another operating fluid F2 in this case air or an oxygen-containing fluid
  • the operating fluid F1 mixes with the further operating fluid F2 in the injection region 11 and is conducted as an operating fluid mixture further in the direction of the catalyst 60.
  • the insulating device 30 comprises microporous insulating material having a thermal conductivity of ⁇ ⁇ 0.05 W / (m ⁇ K).
  • the insulating device 30 is designed annular and arranged to the injector 20 so that the injection direction E of the injector 20 passes through a through hole 31 of the annular insulating device 30.
  • the insulating device 30 has an insulating device thickness D in the injection direction E of the injector 20, and the fluid outlet 21 and the injection section 11 are spaced apart in the injection direction E by the insulating device thickness D and slightly more.
  • a cooling fluid channel 40 for conducting cooling fluid K for cooling the injector 20 is arranged at least in sections.
  • the cooling fluid channel 40 is arranged at least in sections in the circumferential direction around the injector 20.
  • the cooling fluid channel 40 has a cooling fluid inlet 41 for guiding a cooling fluid K into the cooling fluid channel 40 and a cooling fluid outlet 42 for conducting the cooling fluid K out of the cooling fluid channel 40, wherein an input coupling section for mechanically coupling the cooling fluid inlet 41 to a cooling fluid supply line 910 (FIG. see Fig. 1) is configured and at the cooling fluid outlet 42, an output coupling section for mechanically coupling the cooling fluid output 42 with a cooling fluid discharge line 920 is configured.
  • the cooling fluid channel 40 is configured in a fastening body 70, which is fixed to the heating section 10.
  • the insulating device 30 is arranged for thermal insulation of the cooling fluid channel 40 between the combustion region 12 and the cooling fluid channel 40.
  • the injector 20 and the insulating device 30 are also mounted on the mounting body 70. In addition to the embodiment shown in Fig. 2, it is also possible to dispense with the insulating device 30 and to cool the injector only by means of the illustrated cooling fluid channel 40 and thereby protect against excessive heating.
  • FIG. 3 shows an overview of a starting burner 100 which is arranged integrally with an afterburner 200, the afterburner 200 being arranged annularly around a reformer 300.
  • FIG. 3 can be understood to mean that the afterburner 200 can also be used as a starting burner 100.
  • the afterburner 200 has an afterburner inlet 210 and a secondary burner outlet 220.
  • the afterburner 200 has an afterburner catalyst 230, which is designed in the present case annular.
  • the reformer 300 has a reformer input 310 and a reformer output 320.
  • the reformer 300 further includes a reforming catalyst 330.
  • burnt fluid is conducted from the starting burner 100 in the direction of the afterburner catalyst 230. Thereby, the reformer 300 can be heated.
  • the reformer 300 is fed via the reformer input 310, a fuel mixture from the evaporator 600.
  • the fuel mixture can be converted into a suitable anode feed gas, for example hydrogen and carbon dioxide, as described above.
  • the anode supply gas is supplied to the anode region 410 of the fuel cell stack 400 via the reformer output 320.
  • anode exhaust gas and cathode exhaust which is burned in the afterburner 200 by means of the Nachbrennerkatalysators 230. By this combustion, the reformer 300 may also be heated. As shown in FIG.
  • the heated fluids or exhaust gases of the fuel cell stack 400, together with the burnt fluid, are guided out of the starter burner 100 in the direction of the afterburner catalyst 230. Once the reformer 300 has reached a defined operating temperature, the starting burner 100 may be deactivated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

La présente invention concerne un brûleur (100) destiné à chauffer au moins une unité fonctionnelle (200, 300) d'un système de piles à combustible (1000), comprenant une partie de chauffage (10), pourvue d'une zone d'injection (11) et d'une zone de combustion (12), et un injecteur (20) pourvu d'une sortie de fluide (21) servant à injecter un fluide de travail (F1) dans la zone d'injection (11) de la partie de chauffage (10). La zone de combustion (12) est conçue pour brûler le fluide de travail (F1) injecté par l'injecteur (20). Dans une partie intermédiaire (50) située dans au moins en partie en amont de la zone de combustion (12) et au moins en partie en aval de la sortie de fluide par référence à la direction d'injection (E) de l'injecteur (20), sont disposés un dispositif d'isolation destiné à réaliser une isolation thermique entre la partie de chauffage (10) et l'injecteur (20) et/ou, le long de l'injecteur (20), au moins en partie un conduit de fluide de refroidissement (40) servant à guider un fluide de refroidissement pour refroidir l'injecteur (20). L'invention concerne en outre un système de piles à combustible (1000), comprenant le brûleur (100), et un procédé de refroidissement d'un injecteur (20) dans le système de piles à combustible (1000).
PCT/EP2018/053138 2017-02-09 2018-02-08 Brûleur à injecteur pour système de piles à combustible WO2018146182A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50110/2017 2017-02-09
ATA50110/2017A AT519608B1 (de) 2017-02-09 2017-02-09 Brennstoffzellensystem mit Brenner mit Injektor

Publications (1)

Publication Number Publication Date
WO2018146182A1 true WO2018146182A1 (fr) 2018-08-16

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EP1447874A2 (fr) * 2002-06-24 2004-08-18 Delphi Technologies, Inc. Système de piles à combustible à oxydes solides ayant un reformeur intégré et un système de récupération d'énergie
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117948595A (zh) * 2024-02-29 2024-04-30 广西广投正润新材料科技有限公司 一种熔保炉燃烧器及其烧嘴主枪的制作方法

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