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WO2017003089A1 - Système de piles à combustible à oxyde solide chauffé par une source de chaleur externe - Google Patents

Système de piles à combustible à oxyde solide chauffé par une source de chaleur externe Download PDF

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Publication number
WO2017003089A1
WO2017003089A1 PCT/KR2016/005014 KR2016005014W WO2017003089A1 WO 2017003089 A1 WO2017003089 A1 WO 2017003089A1 KR 2016005014 W KR2016005014 W KR 2016005014W WO 2017003089 A1 WO2017003089 A1 WO 2017003089A1
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WIPO (PCT)
Prior art keywords
stack
supplied
air
heated
temperature
Prior art date
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Ceased
Application number
PCT/KR2016/005014
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English (en)
Korean (ko)
Inventor
신석재
박세진
이용
김진형
손승길
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Kyungdong Navien Co Ltd
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Kyungdong Navien Co Ltd
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Publication date
Application filed by Kyungdong Navien Co Ltd filed Critical Kyungdong Navien Co Ltd
Publication of WO2017003089A1 publication Critical patent/WO2017003089A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • 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
    • 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 solid oxide fuel cell system that is heated by an external heat source, and more particularly, by rapidly heating the stack to a predetermined temperature below the operating temperature or the operating temperature of the system by heating air from the external heat source,
  • the present invention provides a solid oxide fuel cell system capable of preventing damage to a stack and deterioration of thermal efficiency due to heating of an entire high temperature box.
  • the electrical energy that we currently use is mainly obtained by thermal and nuclear power generation, and a small amount of electrical energy is obtained by hydropower and other power generation.
  • thermal power generation is to burn fossil fuels such as coal, a large amount of carbon dioxide is inevitably generated by thermal power generation, and other pollutants such as carbon monoxide, sulfur oxides, or nitrogen oxides are emitted to the atmosphere.
  • the Renewable Energy Supply Mandate which has been in force since 2012, has a high weight on the zero-book, fuel cell power generation system, which requires more than a certain amount of power generation companies to supply a certain amount of renewable energy as renewable energy.
  • the promotion of the spread is being promoted.
  • a fuel cell is a device that converts chemical energy contained in a fuel into electrical energy.
  • hydrogen in reformed gas obtained by reforming fuel such as natural gas, methanol, and gasoline and oxygen in air are stacked in the anode of a stack.
  • reaction formula and total reaction formula at each pole are as follows.
  • fuel cells ultimately use hydrogen as a fuel and are very environmentally friendly because there are no other by-products other than water.
  • the fuel cell has the advantage of a very high-efficiency power generation method because it can obtain electrical energy from chemical energy by a relatively simple energy conversion process.
  • Fuel cells include polymer electrolyte fuel cells (PEMFC), direct methanol fuel cells (DMFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC),
  • PEMFC polymer electrolyte fuel cells
  • DMFC direct methanol fuel cells
  • PAFC phosphoric acid fuel cells
  • MCFC molten carbonate fuel cells
  • SOFC solid oxide fuel cells
  • AFC alkali type fuel cells
  • the solid oxide fuel cell is operated at a very high temperature as described above, in particular, the hot box of the solid oxide fuel cell must be heated to a very high temperature for power generation.
  • a method of heating the entire inside of the hot box has been generally used to raise the temperature of the hot box to the operating temperature of the system.
  • the sudden temperature change may cause a temperature difference between the unit cells constituting the stack and the cell, a temperature difference between the gas inlet and the outlet of the unit cell, or a temperature difference between the anode, the electrolyte, and the air electrode constituting the unit cell.
  • cracks or delamination may occur in the stack due to the temperature difference.
  • the present invention is to solve the above problems, an object of the present invention by heating the stack to a certain temperature below the operating temperature or operating temperature of the system by the heating air by an external heat source, damage to the stack by a sudden temperature change and It is to provide a solid oxide fuel cell system that can prevent the thermal efficiency is lowered by heating the entire high-temperature box.
  • a solid oxide fuel cell system heated by an external heat source for solving the above problems is a high temperature box; A burner, a heat exchanger, and a stack disposed in the hot box; And an external heat source disposed outside the high temperature box, wherein the heated air by the external heat source is supplied to the burner or the heat exchanger, and the gas supplied to the stack is supplied to the heat exchanger to exchange heat with the heated air. Is heated, and the stack is heated by the heated gas.
  • the external heat source may be an electric heater.
  • Damage to the stack due to a sudden temperature change may be prevented by controlling the temperature or flow rate of the heated air.
  • the heat exchanger includes a heat exchanger reformer, and the heat exchanger reformer may be heated by the heating air.
  • the heating air is supplied to the burner, the temperature inside the burner reaches the spontaneous ignition temperature of the combustion fuel by the supply of the heating air, the burner is supplied with the combustion fuel, and the burner is the natural It can be ignited by the ignition temperature and the combustion fuel.
  • the heated air may be sequentially supplied to the burner and the heat exchanger.
  • the burner When the temperature of the stack reaches a predetermined temperature, the burner is ignited by combustion fuel and an ignition device to generate combustion gas, and the combustion gas is supplied to the heat exchanger, and the gas supplied to the stack
  • the predetermined temperature may be supplied to the heat exchanger and heated by heat exchange with the combustion gas, and the predetermined temperature may be a temperature at which the stack damage may be prevented due to a sudden temperature change under the control of the burner combustion gas.
  • the gas supplied to the stack includes fuel or steam
  • the heat exchanger includes a heat exchanger reformer
  • the heated air is supplied to the heat exchanger reformer
  • the fuel or steam is supplied to the heat exchanger reformer and heated It can be heated by heat exchange with air.
  • the gas supplied to the stack includes air
  • the heat exchanger includes an air preheater
  • the heated air is supplied to the air preheater
  • the air is supplied to the air preheater and heated by heat exchange with the heated air.
  • the solid oxide fuel cell system further includes an anode exhaust gas cooler disposed inside the hot box, the anode exhaust gas of the stack is supplied to the anode exhaust gas cooler, and the air is sequentially supplied to the anode exhaust gas cooler; It is supplied to the air preheater may be heated by heat exchange with the anode exhaust gas and the heating air.
  • the solid oxide fuel cell system heated by an external heat source by rapidly heating the stack to a certain temperature below the operating temperature or operating temperature of the system by the heating air by the external heat source, a sudden temperature change It is possible to provide a solid oxide fuel cell system capable of preventing damage to the stack and thermal degradation caused by heating of the entire high temperature box.
  • FIG. 1 is a conceptual diagram of a solid oxide fuel cell system heated by an external heat source according to an embodiment of the present invention.
  • FIG. 2 is a view showing a heat transfer state in a high temperature box of a solid oxide fuel cell system heated by an external heat source according to an embodiment of the present invention.
  • FIG. 1 is a conceptual diagram of a solid oxide fuel cell system heated by an external heat source according to an embodiment of the present invention.
  • a solid oxide fuel cell system heated by an external heat source includes a high temperature box 100, a burner 300, a heat exchanger 200, a stack 400, and an external heat source. Include.
  • the high temperature box 100 generally provides thermal insulation for maintaining an operating temperature of a component operated at a high temperature among components applied to a fuel cell system, and minimizes heat loss to improve system efficiency.
  • the burner 300, the heat exchanger 200, and the stack 400 are disposed in the high temperature box 100.
  • An external heat source is disposed outside the high temperature box 100.
  • the external heat source may heat the air to generate heated air, and unlike the combustion gas of the burner 300 to be described later, the external heat source may be a heat source capable of controlling the temperature of the heated air in a low temperature region.
  • the external heat source may be an electric heater 500.
  • the external heat source, in particular the electric heater 500 generates heating air by heating the air supplied to the external heat source, in particular the electric heater.
  • the heated air is supplied to the heat exchanger 200 or to the heat exchanger 200 via the burner 300.
  • the heated air supplied to the heat exchanger 200 is discharged to the outside of the hot box 100 after heat exchange with the gas supplied to the stack 400, that is, the stack supply gas.
  • the heating air is cooled and the stack feed gas is heated.
  • the heated stack feed gas is supplied to the stack 400, and the stack 400 is heated by the heated stack feed gas.
  • the temperature of the stack 400 may increase to a temperature required for the operation of the solid oxide fuel cell system.
  • the gas may be used for power generation of the stack 400.
  • the stack feed gas or heated stack feed gas may be fuel, air or water vapor.
  • the temperature or flow rate of the heating air may also be controlled by the control of the external heat source, in particular, the electric heater 500.
  • the temperature of the heated air can be from a relatively low temperature to a very high temperature.
  • the temperature of the stack feed gas may also be adjusted according to the temperature of the heated air. That is, the temperature of the stack feed gas may also be from a relatively low temperature to a very high temperature.
  • the gas supplied to the stack 400 as a high temperature combustion gas by the burner 300 When the stack 400 is heated to heat the stack 400, the stack 400 may be damaged by a sudden temperature change. That is, due to the sudden temperature change, the temperature difference between the unit cell and the unit cell constituting the stack 400, the temperature difference between the gas inlet and the outlet of the unit cell, or between the fuel electrode, the electrolyte, and the air electrode constituting the unit cell. A temperature difference may be caused, and cracks or layer separation may occur in the stack 400 by the temperature difference.
  • a local high temperature due to a sudden temperature change not only oxidizes the stack 400, but the oxidation may be accompanied by volume expansion, causing cracks in the stack 400.
  • the damage of the stack 400 is due to the fact that the combustion gas of the burner 300 is very hot and the temperature control of the combustion gas in the low temperature region is very limited. That is, the burner 300 generates a high temperature combustion gas by combustion, and the generated combustion gas cannot exist below a predetermined temperature, and thus the temperature control of the combustion gas is limited.
  • the stack 400 is heated by an external heat source, in particular an electric heater 500 capable of generating high temperature air from a low temperature, damage of the stack 400 may be prevented. Can be.
  • the heated air may be supplied to the heat exchanger 200 via the burner 300.
  • the temperature inside the burner 300 also increases. As the temperature rises, the temperature inside the burner 300 may reach a spontaneous ignition temperature of the combustion fuel of the burner 300.
  • the spontaneous ignition temperature means the lowest temperature that ignites spontaneously when heated in air or oxygen stream without igniting the combustible material. Therefore, in the present specification, the spontaneous ignition temperature or spontaneous ignition temperature of the fuel for combustion supplied to the burner 300 is defined as meaning the lowest temperature that ignites naturally by the heating air without igniting the fuel for combustion. Can be.
  • combustion fuel may be supplied to the burner.
  • the combustion fuel since the temperature inside the burner 300 reaches a temperature at which the combustion fuel can spontaneously ignite, the combustion fuel may spontaneously ignite without a separate ignition device.
  • the heat of the combustion gas by spontaneous ignition may be supplied to the stack 400 along the same path as that of the heating air, and the operating temperature of the system according to the present invention is controlled by the combustion gas.
  • the temperature of the stack 400 may be maintained until it is raised or reached the operating temperature.
  • the stack 400 Since the combustion gas of the burner 300 is supplied to the stack 400 after the stack 400 is sufficiently heated by the external heat source, in particular, the heating air of the electric heater 500, the stack 400 is It may not be damaged by the sudden temperature change.
  • the supply of heating air by the external heat source, in particular the electric heater 500 may be stopped, and the stack 400 may be stopped by the combustion gas. ) May be heated or the temperature of stack 400 may be maintained.
  • the solid oxide fuel cell in one embodiment of the present invention may not include a separate ignition device for igniting the combustion fuel.
  • the solid oxide fuel cell system can be further simplified.
  • the burner 300 when the temperature of the stack 400 reaches a predetermined temperature, the burner 300 is ignited by an ignition device, and the combustion gas of the burner 300 is ignited.
  • the stack 400 may be heated or the temperature of the stack 400 may be maintained, which will be described below.
  • the stack 400 may be heated by the supply of the heating air, and the temperature of the stack 400 may reach a predetermined temperature.
  • the predetermined temperature may be defined as a temperature at which the stack 400 may be prevented from being damaged due to a sudden temperature change by controlling the combustion gas of the burner 300.
  • the control of the combustion gas may be control such as temperature or flow rate of the combustion gas.
  • the temperature inside the burner 300 is spontaneously ignited when the temperature of the stack 400 reaches the predetermined temperature. It may be different or earlier than the point in time at which the temperature is reached.
  • the burner 300 may be supplied with fuel for combustion.
  • the burner 300 When combustion fuel is supplied, the burner 300 may be ignited by the combustion fuel and a separate ignition device (not shown) to generate combustion gas.
  • the combustion gas heat may be supplied to the stack 400 along the same path as the heat of the heated air, wherein the temperature of the stack 400 is raised to the operating temperature of the system according to the present invention or reaches the operating temperature. The temperature of the stack 400 may be maintained.
  • the supply of heating air by the external heat source, in particular the electric heater 500 may be stopped. Therefore, the generation of the heating air by the external heat source, in particular the electric heater 500 can be minimized to reduce the power consumption.
  • FIG. 2 is a view showing a heat transfer state in a high temperature box of a solid oxide fuel cell system heated by an external heat source according to an embodiment of the present invention.
  • the heat exchanger 200 may include a heat exchange reformer 210 or an air preheater 220.
  • the gas supplied to the stack 400 may be fuel, air, or water vapor.
  • the gas supplied to the stack 400 by the heating air of the external heat source in particular, the electric heater 500, that is, the heating of the stack supply gas according to an embodiment of the present invention will be described.
  • the external heat source in particular the electric heater 500, generates heating air by heating the air supplied to the external heat source, in particular the electric heater 500.
  • the heating air may be supplied to the burner 300 or the first combustion gas pipe cp1 along the heating air pipe hap1.
  • the heated air may be supplied to the heat exchange reformer 210 along the first combustion gas pipe cp1.
  • the heated air supplied to the heat exchange reformer 210 is in the state of the highest temperature in the high temperature box 100.
  • the heating air supplied to the heat exchange reformer 210 heats the heat exchange reformer 210.
  • the reformer is a device for reforming the fuel supplied to the stack with hydrogen (H 2 ) and supplying it to the stack because the reformer needs to have a high temperature equal to or higher than a predetermined temperature. Therefore, according to one embodiment of the present invention, the heat exchange reformer 210 may be heated to a predetermined temperature or more by the heating air.
  • the heated air is heat exchanged with fuel or steam supplied to the stack 400, that is, stack feed fuel or stack feed steam.
  • fuel or steam supplied to the stack 400 that is, stack feed fuel or stack feed steam.
  • the stack feed fuel or stack feed steam is heated and the temperature of the heated air is lowered.
  • the heated air exchanged by the heat exchange reformer 210 may be supplied to the air preheater 220 along the second combustion gas pipe cp2.
  • the heated air supplied to the air preheater 220 exchanges heat with the air supplied to the stack 400, that is, the stack supply air.
  • the stack supply air is heated and the temperature of the heated air is lowered.
  • the heated air exchanged by the air preheater 220 may be discharged to the outside of the hot box 100 along the third combustion gas pipe cp3.
  • the heating air of the external heat source in particular the electric heater 500 may be sequentially supplied to the heat exchange type reformer 210 and the air preheater 220.
  • the heat exchange reformer 210 By the supply of the heated air, the heat exchange reformer 210 is heated, and the stack feed fuel, the stack supply air, or the stack supply steam is heated in the heat exchange reformer 210 or the air preheater 220. . The temperature of the heating air is gradually lowered through the heat exchange type reformer 210 and the air preheater 220.
  • the stack 400 may be heated by fuel or steam supplied to the stack 400 heat exchanged with the heated air, that is, stack feed fuel or stack feed steam.
  • the fuel may be various fuels of hydrogen or hydrocarbon series such as natural gas (NG), liquefied natural gas (LNG), liquefied petroleum gas (LPG) or diesel.
  • the stack supply fuel supplied into the high temperature box 100 may include steam, that is, stack supply steam by a separate supply device (not shown), and the stack supply steam may be in a state of water.
  • the stack feed fuel supplied into the hot box 100 may be supplied to the heat exchange reformer 210 along the first fuel / steam pipe fsp1.
  • the stack feed fuel supplied to the heat exchange reformer 210 is heated by heat exchange with the heating air of the electric heater 500 in the heat exchange reformer 210.
  • the stack supply steam When the stack supply steam is in the state of water, the water may phase change into water vapor by the heating.
  • the heated fuel may be supplied to the anode 411 of the stack 400 along the second fuel / steam pipe fsp2.
  • the stack 400 in particular the anode 411 of the stack 400 may be heated by the supply of the heated stack feed fuel.
  • the stack feed fuel may be used to burn the burner 300 by moving the fuel electrode 411 to the burner 300 along the first and second anode discharge gas pipes aop1 and aop2. .
  • the stack feed fuel supplied to the heat exchange reformer 210 is reformed into hydrogen gas by the heat exchange reformer 210, the hydrogen gas is It exists in the state of high temperature.
  • the hydrogen gas may be supplied to the anode 411 of the stack 400 along the second fuel / steam pipe fsp2.
  • the stack 400 By supplying the hydrogen gas, the stack 400, in particular, the anode 411 of the stack 400 may maintain an operating temperature of the system according to the present invention.
  • the hydrogen gas is also used for power generation in the stack 400.
  • the stack 400 is generally composed of a plurality of single cells connected in series or in parallel, and the unit cells are porous anodes 411 and cathodes 413 and a dense structure of electrolytes disposed therebetween ( 412).
  • Hydrogen (H 2 ) included in the hydrogen gas supplied to the fuel electrode 411 of the stack 400 is separated from oxygen ions (O 2- ) conducted through the electrolyte 412, which is an ion conductor, from the cathode 413.
  • O 2- oxygen ions
  • the reaction electrons, water (H 2 O), and heat are emitted, and the electrons perform electrical work in the process of moving to the anode through an external circuit (not shown). Since the reaction is exothermic to release heat, the stack 400, in particular, the anode 411 of the stack 400 may more easily maintain the operating temperature.
  • the gas discharged from the anode 411 that is, the anode discharge gas is supplied to the burner 300 along the first and second anode discharge gas pipes aop1 and aop2 to burn the burner 300. It can be used as fuel.
  • the reaction is an exothermic reaction that releases heat
  • the anode exhaust gas is discharged at a somewhat higher temperature than the hydrogen gas supplied to the anode 411.
  • the anode exhaust gas contains a large amount of water vapor.
  • the large amount of water vapor may not be suitable for the anode discharge gas to be used as fuel of the burner 300.
  • the reason is that the temperature increase due to the combustion of the burner 300 may be limited by the steam, and in particular, when the burner 300 is a catalytic burner, the steam may seriously damage the catalyst. .
  • the anode exhaust gas as fuel for combustion of the burner 300.
  • the steam may be removed by various methods, but in view of the use of heat by heat recovery, the steam is preferably condensed and removed by lowering the temperature of the anode exhaust gas.
  • the solid oxide fuel cell system may further include an anode exhaust gas cooler 240 disposed inside the hot box.
  • the anode exhaust gas cooler 240 transfers the heat of the stack supply fuel or the anode exhaust gas discharged from the stack 400 to the stack supply air supplied to the high temperature box 100.
  • the stack feed fuel or the anode exhaust gas discharged from the stack 400 may be connected to the anode exhaust gas cooler 240 along a first anode exhaust gas pipe aop1. Can be supplied.
  • the stack supply fuel or the anode exhaust gas supplied to the anode exhaust gas cooler 240 may be lowered in temperature by heat exchange with the stack supply air supplied to the hot box 100 along the first air pipe ap1. have.
  • the cooler stack feed fuel or the anode discharge gas may pass through a heat exchanger (not shown) disposed outside the hot box 100 while moving to the burner 310 along the second anode discharge gas pipe aop2. have.
  • the stack feed fuel or the anode discharge gas may be further cooled by the heat exchanger (not shown) disposed outside the high temperature box 100, and may be recovered from the stack 400 recovered by the heat exchanger (not shown).
  • the stack feed fuel discharged or the anode discharge gas, in particular, the heat of the anode discharge gas may be used for heating or hot water supply.
  • a condenser (not shown) may be disposed in the second anode discharge gas pipe aop2 passing through the outside of the high temperature box 100, and the water condensed by the temperature decrease is discharged from the anode discharge gas in the condenser (not shown). Can be separated and discharged from. As a result, a large amount of water vapor contained in the anode discharge gas may be removed, and the anode discharge gas may be used as a fuel for combustion of the burner 310 more effectively.
  • the stack 400 may be heated by the heating gas and the stack supply air.
  • the stack supply air may be supplied to the stack 400 along air pipes ap1, ap2, and ap3.
  • the heat exchanger 200 may include an air preheater 220.
  • the stack supply air may be supplied to the air preheater 220 along the first and second air pipes ap1 and ap2.
  • the stack supply air supplied to the air preheater 220 may be heated by heat exchange with heating air.
  • the solid oxide fuel cell system may further include an anode exhaust gas cooler 240 as described above.
  • the stack supply air may be supplied to the anode exhaust gas cooler 240 along the first air pipe ap1.
  • the stack supply air supplied to the anode exhaust gas cooler 240 may be heated by heat exchange with the stack supply air discharged from the stack 400 or the anode exhaust gas.
  • the stack supply air heat exchanged with the stack supply air or the anode discharge gas may be supplied to the air preheater 220 along a second air pipe ap2, and as described above, in the air preheater 220. It can be further heated by heat exchange with the heated air.
  • the heating in the anode exhaust gas cooler 240 may be auxiliary to the heating in the air preheater 220.
  • the temperature of the heating gas in the air preheater 220 may be higher than the temperature of the stack supply air or the anode exhaust gas in the anode exhaust gas cooler 240. Therefore, it may be preferable that the stack supply air passes through the anode exhaust gas cooler 240 and the air preheater 220 sequentially.
  • the air heated in the air preheater 220 or the anode exhaust gas cooler 240 and the air preheater 220 may be supplied to the cathode 413 of the stack 400 along a third air pipe ap3. Can be.
  • the stack 400, in particular, the cathode 413 of the stack 400 may be heated.
  • the stack supply air may be used to burn the burner 300 by heating the cathode 411 and then moving to the burner 300 along the cathode exhaust gas pipe cop1.
  • the stack supply air supplied to the cathode 413 of the stack 400 may be applied to the stack 400, in particular the It is used to maintain the operating temperature of the cathode 413 of the stack 400 and to generate electricity in the stack 400.
  • oxygen included in the stack supply air supplied to the cathode 413 is formed by oxygen ions (O 2 ⁇ ) by an electrochemical reaction between the cathode 413 and the anode 411. Is reduced to The oxygen ions (O 2- ) are conducted to the anode 411 through the electrolyte 412, which is an ion conductor, and the conducted oxygen ions (O 2- ) are hydrogen (H 2 ) of the anode 411. By reacting with the power generation is achieved.
  • Air used for maintaining the operating temperature of the cathode 413 or generating power in the stack 400 may be supplied to the burner 300 along the cathode exhaust gas pipe cop1 to be used for combustion of the burner.

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  • Chemical & Material Sciences (AREA)
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Abstract

La présente invention concerne un système de piles à combustible à oxyde solide chauffé par une source de chaleur externe. La présente invention peut procurer un système de piles à combustible à oxyde solide qui peut empêcher l'endommagement d'un empilement provoqué par une variation rapide de température, et la dégradation du rendement thermique provoquée par le chauffage de l'ensemble d'une boîte à haute température, par chauffage de l'empilement à la température de fonctionnement du système ou à une certaine température inférieure ou égale à la température de fonctionnement du système au moyen d'air chaud chauffé par une source de chaleur externe.
PCT/KR2016/005014 2015-06-29 2016-05-12 Système de piles à combustible à oxyde solide chauffé par une source de chaleur externe Ceased WO2017003089A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2015-0092182 2015-06-29
KR1020150092182A KR101721237B1 (ko) 2015-06-29 2015-06-29 외부열원에 의하여 가열되는 고체산화물 연료전지 시스템

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Cited By (2)

* Cited by examiner, † Cited by third party
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AT520417A1 (de) * 2017-08-18 2019-03-15 Avl List Gmbh Stationäres Brennstoffzellensystem mit Heizvorrichtung außerhalb der Hotbox
AT520881A1 (de) * 2018-01-17 2019-08-15 Avl List Gmbh Verfahren zum Betreiben eines Brennstoffzellensystems

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102081427B1 (ko) * 2017-12-22 2020-02-25 한국퓨얼셀 주식회사 연료전지 하이브리드 시스템
AU2020232743B2 (en) * 2019-03-06 2023-04-06 Korea Institute Of Machinery & Materials Reversible water electrolysis system and operation method thereof

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