• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a SOEC system (1), comprising a fuel cell stack (2) with a gas side (3) and an air side (4), and an ejector (5) for supplying a process fluid to a gas inlet (6) on the gas side (3), wherein the ejector (5) has a primary inlet (7) for introducing a water-containing primary process fluid through a primary line (8) of the SOEC system (1) into a primary section (9) of the ejector (5), and a Secondary inlet (10) for introducing recycled secondary process fluid through a recirculation line (11) of the SOEC system (1) from a gas outlet (12) on the gas side (3) into a secondary section (13) of the ejector (5) , wherein the SOEC system (1) further includes a control gas supply section (14) for supplying control gas into the primary section (9) and into the secondary section (13) for controlling a pressure and / or a mass flow in the primary section (9) and in the secondary section ( 13), and where the control has a valve arrangement (19, 20) for controlling the pressure and / or the mass flow in the primary section (9) and in the secondary section (13). The invention also relates to a method for operating an SOEC system (1) according to the invention.
    公开号:AT522484A4
    申请号:T50599/2019
    申请日:2019-07-02
    公开日:2020-11-15
    发明作者:Reichholf Dipl Ing David；Buchgraber Rene；Koberg BSC Franz
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

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    SOEC system and method for operating a SOEC system
    The present invention relates to a SOEC system, comprising a fuel cell stack with a gas side and an air side, and an ejector for supplying a process fluid to a gas inlet on the gas side, the ejector having a primary inlet for introducing a water-containing primary process fluid through a primary line of the SOEC system in a primary section of the ejector, and a secondary inlet, for introducing returned secondary process fluid through a recirculation line of the SOEC system from a gas outlet on the gas side in a secondary section of the ejector. In addition, the invention
    a method for operating such a SOEC system.
    SOEC systems, the core component of which is a fuel cell stack, must be operated in special operating states for meaningful functions and / or operating modes and desired lifetimes. This includes in particular a predefined supply of process gases to the fuel cell stack, that is to say a fluid containing water and / or water vapor to the gas side and air to the air side. When operating a SOEC system, as with conventional fuel cell systems, a distinction is made between cathode and anode gas flow, or in other words, between fuel and air side, with the cathode corresponding to the fuel side and the anode to the air side in electrolysis In high-temperature electrolysis with SOEC stacks, gas is routed on the fuel side, in particular with water vapor and carbon dioxide. On the air side, air is generally used to flush the anode gas space. The air leaves the fuel cell stack enriched with oxygen during operation. In order to prevent degradation of the cells on the fuel side, in particular an oxidation of the nickel catalyst, as far as possible, a reducing atmosphere must prevail on the fuel side, which also has a reducing effect in the gas supply.
    de species like hydrogen and carbon monoxide should be secured.
    In stand-alone systems without a test bench infrastructure or a separate storage tank with reducing species, the proportion of the reducing atmosphere must be provided directly from the system itself. This generally represents a major challenge in the development of SOEC systems and
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    can be realized through an internal recirculation of hot exhaust gases from the fuel cell stack on the fuel side.
    Recirculation requires suitable interconnection and a device that increases the pressure level of the exhaust gas part that is to be recirculated. In modern SOEC systems, this is accomplished by an ejector. Such a component is a static component that has to be specifically designed for the desired operating points of the system and does not have any moving parts. In the ejector, a secondary flow, which basically corresponds to the recirculated product gas from the gas side of the fuel cell stack, is added to a primary flow. The primary current comprises media that have to be fed to the fuel cell stack according to its functionality, for example water vapor for the electrolysis.
    Corresponding to the way an ejector works, the primary flow must have a specifically increased pressure level, whereby the primary flow in the ejector nozzle reaches a high speed and the outflowing jet generates a negative pressure in a mixing chamber of the ejector. The negative pressure causes the secondary flow to be drawn in by a suction effect and added to the primary flow. Due to the fixed geometry of the ejector, the suction effect, i.e. This means that the recirculation effect and the overall pressure increase depend on the respective operating state of the SOEC system. Since the primary current is directly related to the operating state on the fuel cell stack, this means that there is a maximum primary mass flow in an operating state with maximum electrolysis activity. In addition, with a fixed nozzle geometry of the ejector, the fastest jet speed is also available, which basically leads to the greatest recirculation rate and pressure increase at an ejector outlet. In the case of partial load operating states and thus lower primary mass flows, the jet speed, the recirculation rate and the possible pressure increase decrease. In order to even achieve the necessary pressure increase at a certain recirculation rate, a minimum primary mass flow must be present. This means that the recirculation required for system operation works from a certain minimum partial load operation and the recirculation rate always works with increasing load points towards full load
    gets bigger.
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    One problem with the use of ejectors is the limited controllability. The components of an ejector basically have a fixed geometry, which defines the characteristics for operation in the SOEC system. Basically, ejectors are designed for the main operating point and, if possible, operated at this operating point. In relation to the partial load range, you want one
    The greatest possible leeway in which safe operation can be made possible.
    The international patent application WO 2015/040270 A1 describes a reversibly operable SOFC / SOEC system in which an ejector of the generic type is arranged upstream of a reformer. In addition, means for feeding an additional fluid into the primary flow in order to regulate a fluid composition and / or a pressure in the ejector are described. Although this improves the controllability on the ejector, it does not yet meet the desired requirements.
    changes.
    The object of the present invention is to at least partially take account of the problems described above. In particular, the object of the invention is to create a SOEC system and a method for operating a SOEC system, which contribute to improving the controllability of an ejector in the SOEC system.
    The above object is achieved by the claims. In particular, the above object is achieved by the SOEC system according to claim 1 and the method according to claim 9. Further advantages of the invention emerge from the dependent claims, the description and the drawings. Features and details that are described in connection with the SOEC system naturally also apply in connection with the method according to the invention and vice versa, so that with regard to the disclosure of the individual aspects of the invention, reference is or will always be made to each other
    can.
    According to a first aspect of the present invention, a SOEC system is proposed. The SOEC system has a fuel cell stack with a gas side and an air side, and an ejector for supplying a process fluid to a gas inlet on the gas side. The ejector has a primary entrance for introducing
    a water-containing primary process fluid through a primary line of the SOEC
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    System in a primary section of the ejector, and a secondary inlet, for introducing returned secondary process fluid through a recirculation line of the SOEC system from a gas outlet on the gas side in a secondary section of the ejector. The SOEC system also has a control gas supply section for supplying control gas into the primary section and into the secondary section for controlling a pressure and / or a mass flow in the primary section and in the secondary section, the control gas supply section for controlling the pressure and / or the mass flow in the primary section and in the secondary
    section has a valve assembly.
    The SOEC system described represents a solution to the problem of improving the controllability of the ejector and the secondary process fluid in the recirculation line. The invention relates to the type of introduction of the control gas, which both on the primary side of the ejector and the water-containing primary process fluid can also be added to the recirculation flow on the secondary side of the ejector. An admixture on the primary side can be understood to mean an admixture on, in and / or upstream of the primary section of the ejector. An admixture on the secondary side of the ejector can be understood to mean an admixture on, in and / or upstream of the secondary section of the ejector
    will.
    The admixture in the primary section increases the mass and volume flow in the primary section. This leads to a correspondingly high pre-pressure in a nozzle of the ejector and a higher jet speed in the nozzle. As described above, this also increases the recirculation rate and the possible pressure increase. The introduction of the control gas into the secondary section, however, reduces the primary mass flow. If the control gas is added to the recirculation flow, the actual recirculation flow will decrease, or otherwise
    In other words, the proportion of product gas in the recirculation stream is reduced.
    Through the control gas supply section, the amount of control gas can be continuously adjusted between the primary and secondary side, i.e. i.e., between the primary section and the secondary section. In the event that the SOEC system is designed in the form of a co-electrolysis SOEC system, the largest control range is obtained if the ejector geometry for the flow with pure water vapor in the maximum
    len operating point is designed to achieve a desired recirculation rate and pressure
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    to achieve increase. In a corresponding operating state, the control gas can only be used on the secondary side, i. i.e., in the secondary section. In partial load operating states in which the primary process fluid flow, in particular in the form of a water vapor mass flow, no longer corresponds to the designed ejector mass flow, the control gas is no longer introduced on the secondary side, depending on the load point, but on the primary side, i.e. in the primary section. The consequence of this is that the ejector output drops less sharply in partial load operation and the operating range is significantly expanded
    can.
    The control gas can be understood to mean a gas for controlling and / or regulating the pressure and / or the mass flow in the primary section and in the secondary section. It should be mentioned here that by controlling and / or regulating the pressure and / or the mass flow in the primary section, the pressure and the mass flow in the secondary section can also be automatically controlled and / or regulated. Correspondingly, by controlling and / or regulating the pressure and / or the mass flow in the secondary section, the pressure and the mass flow in the primary section can also be automatically controlled and / or regulated.
    The control gas supply section can have a plurality of line sections and a plurality of control and / or regulating means arranged therein and / or thereon. The control gas feed section can also include fluid conveying means such as pumps and / or fans for conveying the control gas through the various line sections.
    sen.
    The SOEC system is to be understood in particular as a high-temperature SOEC electrolysis system. Furthermore, the SOEC system can also be understood as a reversibly operable SOFC / SOEC system. The SOEC system is preferably designed in the form of a co-electrolysis SOEC system, in which in particular and / or predominantly carbon dioxide is used as the control gas. The water-containing primary process fluid can have water and in particular water vapor, which can be generated by an evaporator that can be arranged upstream of the ejector. That is to say, the water-containing primary process fluid can be understood to mean a water- and / or water-vapor-containing primary process fluid. The recycled secondary process fluid can be used as a product generated on the gas side
    duct gas can be understood.
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    The ejector can be understood to mean a jet pump with a motive nozzle, a mixing chamber and a diffuser. The propellant nozzle can be understood as a primary section or at least as part of the primary section. An area upstream of the mixing chamber and downstream of the secondary inlet can be understood as a secondary section. The ejector is preferably arranged directly upstream of the gas side in order to supply the water vapor from there to the gas side as effectively and efficiently as possible.
    The SOEC system can have an operating state recognition device for recognizing a current operating state of the SOEC system. In addition, the SOEC system can have a controller which is in communication with the operating state detection device and is configured to set the control gas supply in the primary section and / or in the secondary section as a function of the detected operating state of the SOEC system. The ejector in the SOEC system can thus be controlled essentially automatically and / or automatically. The operating state recognition device can have one or more temperature sensors for recognizing operating temperatures in the SOEC system, one or more pressure sensors for recognizing operating pressures in the SOEC system, one or more mass flow recognition means for recognizing mass flows in the SOEC system, and / or one or more material sensors for recognizing Composition of substances in operating fluids, such as the primary process fluid and / or the secondary process fluid.
    A process fluid is understood to mean a fluid that is required for the operation of the SOEC system. In the present case, the primary process fluid has predominantly water vapor and, in addition, carbon dioxide. The process fluid downstream of the ejector comprises in particular the primary process fluid, the secondary process fluid and / or the control gas. The control of the pressure and / or the mass flow is to be understood in particular as the control of the pressure and / or the mass flow of the respective fluids in the respective functional section of the SOEC system. The valve arrangement can be used as a means for blocking and releasing flow
    idleitungsabschnitte be understood in the control gas supply section.
    According to a further embodiment of the present invention, it is possible that the control gas supply section is a primary control gas line for conducting the
    Has control gas in the primary inlet and / or in the primary line. Through the
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    In the primary control gas line, the control gas can be guided easily and directly to the desired position in the primary section of the ejector. The control gas can be fed into the primary line upstream of the ejector, if necessary upstream of further functional components of the SOEC system. For example, in a SOEC system according to the invention, a cold side of a heat exchanger is arranged upstream of the ejector, through which the primary line extends, the primary control gas line leading into the primary line upstream of the cold side. This means that the control gas can be heated up before it is fed to the ejector and lead to improved efficiency in the SOEC system. A branch line preferably leads from the recirculation line through the hot side of the heat exchanger. This means that hot product gas can be used to heat the control gas. The efficiency of the overall system can be increased
    ter be improved.
    As an alternative or in addition to the primary control gas line, the control gas supply section in an SOEC system according to the invention can also have a secondary control gas line for guiding the control gas into the secondary inlet. The control gas can be fed easily and directly through the secondary control gas line
    to the desired position in the secondary section of the ejector.
    It is of further advantage if the secondary control gas line in a SOEC system according to the invention is designed at least in sections to be separate from the recirculation line. This means that the secondary control gas line is designed as a dedicated control gas line separate from the recirculation line. This means that control gas can be fed to the ejector independently of the recirculation flow. The re-
    The gelability of the ejector can thus be improved accordingly.
    In addition, in a SOEC system according to the present invention, it is possible for the primary control gas line and the secondary control gas line to be designed separately from one another, at least in sections. In other words, the primary control gas line and the secondary control gas line are designed as dedicated control gas lines. It is advantageous in terms of circuit technology, since it can be implemented relatively easily, if the primary control gas line and the secondary control gas line extend parallel to one another at least in sections. In an advantageous circuit arrangement, the primary control gas line can be from
    a main control gas line extending from a control gas source to the
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    Primary input and / or extend into the primary line. The secondary control gas line can extend from the main control gas line and separately from the primary control gas line to the secondary inlet. The main control gas line can therefore be in a fork section in the primary
    Branch the control gas line and the secondary control gas line.
    For simple and reliable control and / or regulation of the control gas to the ejector, it is possible in an SOEC system according to the invention that the valve arrangement has a primary valve in the primary control gas line and a secondary valve in the secondary control gas line. Through the valves, the primary control gas line and the secondary control gas line can be used to achieve the desired controllability of the ejector, i. That is, for the desired introduction of the control gas into the primary section and / or into the secondary section, can be blocked or released. The valves can therefore each be used as a flow regulator
    Controlling a control gas flow are understood.
    It is also possible that the control and / or regulation is carried out by a rich water electrolysis. For this purpose, a second water line with, for example, another pump for increasing the pressure is provided. After the water has evaporated, it is added to the feed stream as a primary process fluid or secondary process fluid, so that the evaporated water is used as a control gas. This enables simple regulation. So steam is used as the control gas.
    It is also possible that a SOEC system according to the invention has a control gas source for providing the control gas in the form of carbon dioxide. The control gas source can have a carbon dioxide store, for example in the form of a carbon dioxide tank, and / or a decentralized supply source for carbon dioxide, for example in the form of recirculated carbon dioxide from other processes during operation of the SOEC system. The use of carbon dioxide as a control gas has proven particularly advantageous in a co-electrolysis SOEC system. Here the carbon dioxide is needed anyway on the fuel cell stack. By using carbon dioxide as a control gas, both the introduction of the carbon dioxide into the feed stream as the primary process fluid of the system, which is necessary for the co-electrolysis operation, and the
    desired, improved controllability of the ejector and the fluid flow in the re-
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    circulation line must be taken into account. Compared to water vapor, carbon dioxide has a larger actual volume in the same thermodynamic state. The invention relates to the type of introduction of the carbon dioxide, which is added to the water vapor on the primary side of the ejector and to the recirculation flow on the secondary side of the ejector
    can.
    According to a further aspect of the present invention, a method for operating a SOEC system as described in detail above is available
    provided. The procedure consists of the following steps:
    - Detection of a current operating status of the SOEC system by a
    Operating state detection device, and
    - Setting the control gas supply in the primary section and / or in the secondary section depending on the detected operating state of the SOEC system
    through a controller.
    A method according to the invention thus has the same advantages as have been described in detail with reference to the SOEC system according to the invention. As already described above with reference to the SOEC system, carbon dioxide or a gas rich in carbon dioxide is preferably used as the control gas. The operating state can be based on at least one recognized temperature, at least one recognized pressure, at least one recognized substance composition and / or at least one recognized and / or determined mass flow in the
    SOEC system recognized or determined.
    In an embodiment variant of the present invention according to the invention, it is also possible that a control gas mass flow to the primary section is increased and / or a control gas mass flow to the secondary section is reduced when a partial load operation of the SOEC system is detected. That is, depending on a recognized operating state of the SOEC system, in the present case when a partial load operation is recognized, the input gas compositions at the ejector, in other words the feed streams or the primary and secondary process fluids, are determined. By moving the control gas, especially in the form of carbon dioxide, from the secondary side to the primary side, the ejector output can be reduced to one
    can be improved in multiple ways.
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    Further measures improving the invention emerge from the following description of various exemplary embodiments of the invention, which are shown in FIG
    the figures are shown schematically. They each show schematically:
    Figure 1 is a block diagram of a SOEC system according to a preferred embodiment
    implementation of the present invention,
    Figure 2 shows a detailed view of an ejector in a SOEC according to the invention
    System, and FIG. 3 shows a flow chart for explaining a method according to the invention.
    Elements with the same function and mode of operation are shown in the figures
    the same reference numerals.
    1 shows a SOEC system 1 according to a preferred embodiment in the form of a co-electrolysis SOEC system. The SOEC system 1 shown has a fuel cell stack 2 with a gas side 3 and an air side 4. An electrolyte membrane 24 is arranged between the gas side 3 and the air side 4. In addition, the SOEC system 1 has an ejector 5 for supplying a process fluid to a gas inlet 6 on the gas side 3. The ejector 5 comprises a primary inlet 7 for introducing a water-containing primary process fluid through a primary line 8 of the SOEC system 1 into a primary section 9 of the ejector 5 and a secondary inlet 10 for introducing returned secondary process fluid through a recirculation line 11 of the SOEC system 1 from a gas outlet 12
    on the gas side 3 in a secondary section 13 of the ejector 5.
    In addition, the SOEC system 1 has a control gas supply section 14 for supplying control gas into the primary section 9 and into the secondary section 13 for controlling a pressure and / or a mass flow in the primary section 9 and in the secondary section 13, the control gas supply section 14 for controlling the pressure and / or the mass flow in the primary section 9 and in the secondary
    Section 13 has a valve arrangement 19, 20.
    More precisely, the control gas supply section 14 has a primary
    Control gas line 17 for guiding the control gas into the primary line 8. Age-
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    The control gas could also be fed directly into the primary section 9 either naturally or in addition. A cold side of a heat exchanger 18 is arranged upstream of the ejector 5, through which the primary line 8 extends, the primary control gas line 17 leading into the primary line 8 upstream of the cold side. Through the hot side of the heat exchanger 18, hot product gas, i.e. That is, the recirculated secondary process fluid is passed from the gas side 3 of the fuel cell stack 2 to heat the control gas.
    An evaporator 25 for evaporating water is arranged upstream of the cold side of the heat exchanger 18. Upstream of the evaporator 25 is one
    Pump 26 for delivering water to evaporator 25 is arranged.
    The control gas supply section 14 also has a secondary control gas line 21 for guiding the control gas into the secondary inlet 10. The secondary control gas line 21 is configured separately from the recirculation line 11. In addition, there are the primary control gas line 17 and the secondary control gas line
    21 designed separately from each other.
    The SOEC system 1 shown also has a control gas source 22 for providing the control gas in the form of carbon dioxide. A main control gas line 23 extends from the control gas source 22 and branches in a fork section into the primary control gas line 17 and the secondary control gas line 21. The primary control gas line 17 and the secondary control gas line 21 then extend parallel to one another up to the ejector 5.
    The valve arrangement has a primary valve 19 in the primary control gas line 17 and a secondary valve 20 in the secondary control gas line 21, through which the mass flows in the respective control gas line are controlled and / or regulated
    can be.
    An operating state recognition device 15 for recognizing an operating state in the SOEC system 1 is configured on the ejector 5. The operating state recognition device 15 has a sensor system for recognizing a current mass flow through a diffuser 29 of the ejector 5 on the basis of temperature and pressure values in the diffuser 29. The operating state detection device 15, the primary valve 19 and the secondary valve 20 are connected to a controller 16
    controlling the primary valve 19 and the secondary valve 20 based on a recognized
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    Operating status in signal connection. At the same time, the controller 16 can also control the primary valve 19 and the secondary valve 20, as desired, using directly communicated operating states. For example, the controller 16 can be informed by a user and / or a digital signal unit in which operating state, for example partial load or full load, the SOEC system is currently in
    is or should be located in the near future.
    The ejector 5 is shown in detail in FIG. 2. As shown, the ejector 5 has a nozzle 27, downstream of the nozzle 27 a mixing chamber 28 and downstream of the mixing chamber 28 a diffuser 29. In the area of the nozzle 27 and the mixing chamber 28, the primary inlet 7 and the primary section 9 are located at the end of the primary line 8. Both the recirculation line 11 and the secondary control gas line 21 rest on the ejector 5 shown. As shown enlarged, these both open into the secondary section 13. Alternatively, however, it would also be possible for the recirculation line 11 and the secondary control gas line 21 to be in different fluid inlet sections arranged separately from one another on the ejector
    5 open, as indicated in the simplified circuit diagram of FIG.
    3 shows a flow diagram for explaining a method according to a preferred embodiment. For this purpose, in a first step S1 a current operating state of the SOEC system 1 is recognized by the operating state recognition device 15. This can be done on the basis of current operating parameters in the SOEC system 1 or on the basis of a predetermined or desired operating state. Then, in a second step S2, the control gas supply into the primary section 9 and / or into the secondary section 13 is set by the controller 16 as a function of the detected operating state of the SOEC system 1. When a partial load operation of the SOEC system 1 is detected, a control gas mass flow to the primary section 9 is increased and / or a control gas mass flow to the secondary section
    secondary section 13 reduced.
    In addition to the illustrated embodiments, the invention allows further design principles. That is, the invention is not intended to apply to those with reference to the figures
    illustrated embodiments are considered limited.
    List of reference symbols
    1 SOEC system
    2 fuel cell stack 3 gas side
    4 air side
    5 ejector
    6 gas inlet
    7 primary input
    8 primary line
    9 primary section
    10 secondary input
    11 recirculation line
    12 gas outlet
    13 secondary section
    14 control gas supply section 15 operating state detection device 16 controller
    17 Primary control gas line
    18 heat exchangers
    19 primary valve
    20 secondary valve
    21 Secondary control gas line 22 Control gas source
    23 Main control gas line
    24 electrolyte membrane
    25 evaporators
    26 pump
    27 nozzle
    28 Mixing Chamber 29 Diffuser
    AVL List GmbH
    权利要求:
    Claims (10)
    [1]
    1 ... SOEC system (1), comprising a fuel cell stack (2) with a gas side (3) and an air side (4), and an ejector (5) for supplying a process fluid to a gas inlet (6) on the gas side ( 3), the ejector (5) having a primary inlet (7) for introducing a water-containing primary process fluid through a primary line (8) of the SOEC system (1) into a primary section (9) of the ejector (5), and a secondary inlet (10) ), for introducing returned secondary process fluid through a recirculation line (11) of the SOEC system (1) from a gas outlet (12) on the gas side (3) in a secondary section (13) of the ejector (5), characterized by a control gas feed section (14) for feeding control gas into the primary section (9) and into the secondary section (13) for controlling a pressure and / or a mass flow in the primary section (9) and in the secondary section (13), the control gas feed section (14) for Control of the pressure and / or de s mass flow in the primary section (9) and in the secondary section (13) has a valve arrangement (19, 20).
    [2]
    2. SOEC system (1) according to claim 1, characterized in that the control gas supply section (14) has a primary control gas line (17) for guiding the control gas into the primary inlet (7) and / or into the primary line
    (8).
    [3]
    3. SOEC system (1) according to claim 2, characterized in that upstream of the ejector (5) there is a cold side of a heat exchanger (18) through which the primary line (8) extends, the primary control gas line (17 ) upstream of the cold side into the primary line (8).
    [4]
    4. SOEC system (1) according to any one of the preceding claims, characterized in that the control gas supply section (14) has a secondary control gas line (21) to
    Has passing the control gas into the secondary inlet (10).
    [5]
    5. SOEC system (1) according to claim 4, characterized in that the secondary control gas line (21) at least in sections separated from
    the recirculation line (11) is designed.
    [6]
    6. SOEC system (1) according to one of claims 2 to 3 and according to one of claims 4 to 5, characterized in that the primary control gas line (17) and the secondary control gas line (21)
    are designed separately from one another at least in sections.
    [7]
    7. SOEC system (1) according to one of claims 2 to 3 and according to one of claims 4 to 6, characterized in that the valve arrangement has a primary valve (19) in the primary control gas line (17)
    and a secondary valve (20) in the secondary control gas line (21).
    [8]
    8. SOEC system (1) according to one of the preceding claims, characterized by a control gas source (22) for providing the control gas in the form of carbon dioxide.
    [9]
    9. A method for operating a SOEC system (1), in particular a SOEC system (1) according to one of the preceding claims, comprising the steps:
    - Recognition of the current operating status of the SOEC system (1)
    by an operating state recognition device (15), and
    - Setting the control gas supply in the primary section (9) and / or in the secondary section (13) depending on the detected operating state of the SOEC system (1) by a controller (16).
    [10]
    10. The method according to claim 9, characterized in that
    when a partial load operation of the SOEC system (1) is detected, a control gas
    mass flow to the primary section (9) is increased and / or a control gas mass flow to the secondary section (13) is reduced.
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    同族专利:
    公开号 | 公开日
    AT522484B1|2020-11-15|
    CN113906599A|2022-01-07|
    WO2021000003A1|2021-01-07|
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    KR20160049037A|2013-09-23|2016-05-04|콘비온 오와이|A recirculation arrangement and method for a high temperature cell system|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50599/2019A|AT522484B1|2019-07-02|2019-07-02|SOEC system and method for operating a SOEC system|ATA50599/2019A| AT522484B1|2019-07-02|2019-07-02|SOEC system and method for operating a SOEC system|
    CN202080039876.0A| CN113906599A|2019-07-02|2020-07-02|SOEC system and SOEC system operation method|
    PCT/AT2020/060260| WO2021000003A1|2019-07-02|2020-07-02|Soec system and method for operating a soec system|
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