JP2014165129A - Fuel battery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuel battery device that can be downsized and is high in operation efficiency.SOLUTION: A fuel battery device according to the present invention comprises a desulfurizer for desulfurizing raw fuel containing sulfur supplied by raw fuel supply means 2. The desulfurizer comprises: a high-temperature desulfurizer 18 arranged on the raw fuel supply means 2 side; and a normal-temperature desulfurizer 19 arranged on the downstream side of the high-temperature desulfurizer 18. This makes it possible to improve operation efficiency and restricts an increase in the size of the room-temperature desulfurizer 19, thus providing the fuel battery device that can be downsized.

Description

  The present invention relates to a fuel cell device.

  In recent years, as a next-generation energy, a fuel cell module in which a fuel cell capable of obtaining electric power using a fuel gas (hydrogen-containing gas) and an oxygen-containing gas (air) is stored in a storage container, or a fuel cell Various fuel cell devices in which a module is housed in an outer case have been proposed.

  Generally, city gas, propane gas, and the like are used as fuel gas used for power generation of such fuel cells, but these gases contain sulfur as an impurity. This sulfur must be removed before feeding the cell.

  As means for removing sulfur, a room temperature adsorption desulfurization agent having a rated operating temperature of room temperature and a warm adsorption desulfurization agent having a rated operation temperature of high temperature are known. In Patent Document 1 and Patent Document 2, these are known. A desulfurization apparatus and an operation method thereof have been proposed.

JP 2006-111766 A JP 2003-20489 A

  As described above, although a normal temperature adsorptive desulfurization agent having a rated operating temperature of normal temperature and a warm adsorptive desulfurizing agent having a high rated operating temperature can be used in combination, efficient operation can be performed, but normal temperature adsorptive desulfurization is possible. When the agent and the warm adsorption desulfurization agent are arranged in this order, the room temperature adsorption desulfurization agent has a small desulfurization capacity per unit volume. There is a problem that the fuel cell device becomes larger and the fuel cell device becomes larger.

  Therefore, an object of the present invention is to provide a fuel cell device that can be miniaturized and has high operating efficiency.

  The fuel cell device of the present invention comprises a desulfurization device for desulfurizing raw fuel containing sulfur supplied from the raw fuel supply means, and the desulfurization device is a high-temperature desulfurization device disposed on the raw fuel supply means side. An apparatus and a room temperature desulfurization apparatus disposed on the downstream side of the high temperature desulfurization apparatus are provided.

  The fuel cell device of the present invention improves operating efficiency by arranging a high temperature desulfurization device on the raw fuel supply means side and a normal temperature desulfurization device on the downstream side as a desulfurization device for desulfurizing raw fuel containing sulfur. In addition, the capacity of the room temperature desulfurization apparatus can be reduced, and the fuel cell apparatus can be downsized.

It is a block diagram which shows an example of a structure of a fuel cell system provided with the fuel cell apparatus of this invention. It is an external appearance perspective view which shows an example of the fuel cell module which comprises the fuel cell apparatus of this invention. It is a block diagram which shows another example of a structure of a fuel cell system provided with the fuel cell apparatus of this invention. It is a block diagram which shows another example of a structure of a fuel cell system provided with the fuel cell apparatus of this invention. It is a block diagram which shows another example of a structure of a fuel cell system provided with the fuel cell apparatus of this invention. It is a block diagram which shows another example of a structure of a fuel cell system provided with the fuel cell apparatus of this invention.

  FIG. 1 is a configuration diagram illustrating an example of a fuel cell system including the fuel cell device of the present embodiment. In the following drawings, the same numbers are assigned to the same members.

  The fuel cell system shown in FIG. 1 includes a power generation unit that generates power, a hot water storage unit that stores hot water after heat exchange, and a circulation pipe that circulates water between these units. Corresponds to the fuel cell device of the present invention.

  The fuel cell device (power generation unit) shown in FIG. 1 uses a fuel cell stack 1 (hereinafter sometimes abbreviated as a cell stack) formed by combining a plurality of fuel cells, and raw fuel such as natural gas or kerosene. The raw fuel supply means 2 to be supplied, the high temperature desulfurization device 18 and the normal temperature desulfurization device 19 for removing sulfur components contained in the raw fuel supplied from the raw fuel supply means 2, and the oxygen-containing gas to the fuel cells constituting the cell stack 1 And a reformer 4 for steam reforming with steam and raw fuel from which sulfur components have been removed in each desulfurization apparatus. The high temperature desulfurization apparatus 18 and the room temperature desulfurization apparatus 19 will be described in detail later, and in the following description, the two may be referred to as a desulfurization apparatus. The reformer 4 vaporizes water supplied by a water pump 5 described later (pure water, sometimes abbreviated to water as appropriate) and is supplied from the raw fuel supply means 2 to remove sulfur components. A vaporization section for mixing raw fuel and water vapor, and a reforming section for generating a fuel gas (hydrogen-containing gas) by reacting the mixed raw fuel and water vapor with a reforming catalyst inside And.

  In FIG. 1, a fuel cell module (hereinafter sometimes referred to as a module) constituting the fuel cell device of the present invention is configured by storing the cell stack 1 and the reformer 4 in a storage container. . In FIG. 1, each device constituting the fuel cell module is surrounded by a two-dot chain line (indicated by M in FIG. 1).

  In the following description, a fuel cell device including a solid oxide fuel cell as a fuel cell will be described as an example. However, the fuel cell device is not limited to the solid oxide type, but various types such as a solid polymer type. The fuel cell device can be obtained.

  Further, in the fuel cell device (power generation unit) shown in FIG. 1, heat exchange is performed by exchanging heat between exhaust gas (exhaust heat) generated by power generation of the fuel cells constituting the cell stack 1 and water flowing through the circulation pipe 12. 6, a condensed water treatment device 15 for treating the condensed water generated in the heat exchanger 6 into pure water, and a water tank 7 for storing water (pure water) treated in the condensed water treatment device 15. The water tank 7 and the heat exchanger 6 are connected by a condensed water supply pipe 14. In addition, depending on the quality of the condensed water produced | generated by the heat exchange in the heat exchanger 6, it can also be set as the structure which does not provide the condensed water processing apparatus 15. FIG. Moreover, when the condensed water processing apparatus 15 has the function to store water, it can also be set as the structure which does not provide the water tank 7. FIG.

  The water stored in the water tank 7 is supplied to the reformer 4 (vaporizer, not shown) by a water pump 5 provided in a water supply pipe 16 that connects the water tank 7 and the reformer 4. The

  Furthermore, the fuel cell device shown in FIG. 1 converts a DC power generated by the fuel cell into an AC power, and adjusts the supply amount of the converted current to an external load (power condition unit). Na) 8, In addition to the outlet water temperature sensor 10 for measuring the water temperature of the water (circulated water stream) provided at the outlet of the heat exchanger 6 and flowing through the outlet of the heat exchanger 6, a control device 9 is provided for circulation. A power generation unit (fuel cell device) is configured together with a circulation pump 11 that circulates water in the pipe 12. And each apparatus which comprises these electric power generation units can be set as an electric power generation unit with easy installation, carrying etc. by accommodating in an exterior case (not shown). The hot water storage unit includes a hot water storage tank 13 for storing hot water after heat exchange.

  The exhaust gas exhaust line from the module M is provided with an exhaust gas treatment device 17 for treating the exhaust gas generated during the operation of the fuel cell (cell stack 1). Note that the exhaust gas treatment device can be housed in a storage container, and the exhaust gas treatment device can be generally configured by housing a known combustion catalyst.

  Here, an operation method of the fuel cell system shown in FIG. 1 will be described. First, raw fuel is supplied from the raw fuel supply means 2 to the high-temperature desulfurization apparatus 18. The raw fuel after being desulfurized by the high temperature desulfurization apparatus 18 is continuously supplied to the room temperature desulfurization apparatus 19 and desulfurized again. The raw fuel (gas) after being desulfurized by the room temperature desulfurization device 19 is supplied to the reformer 4 via the raw fuel supply pump 20.

  The reformer 4 is supplied with condensed water generated by heat exchange between the exhaust gas generated by the operation of the fuel cell (cell stack 1) in the heat exchanger 6 (to be described later) and the water flowing through the circulation pipe 12. The The condensed water generated in the heat exchanger 6 is processed by the condensed water treatment device 15 (made pure water) and supplied to the water tank 7. The water stored in the water tank 7 is supplied to the reformer 4 by the water pump 5.

  Thereby, steam reforming is performed in the reformer 4 with the raw fuel after desulfurization supplied from each desulfurization apparatus and the water supplied from the water pump 5, and the fuel gas generated by the steam reforming Is supplied to the fuel cell. In the fuel battery cell, power generation is performed using the fuel gas and the oxygen-containing gas supplied from the oxygen-containing gas supply means 3. Thus, water self-sustained operation can be performed by using condensed water effectively.

  FIG. 2 is an external perspective view showing an example of the module M shown in FIG. The module M has a lower end of a cell stack 1 configured by electrically connecting a plurality of fuel battery cells 22 in series in a storage container 21 via current collectors (not shown). A cell stack device 28 fixed to a manifold 23 for supplying fuel gas to 22 is housed.

  In addition, in order to obtain the fuel gas used in the fuel battery cell 22, the reformer 4 for reforming the raw fuel after desulfurization processed by the desulfurization apparatus to generate the fuel gas is provided above the cell stack 1. The desulfurized raw fuel supply pipe 27 supplied to the reformer 4 from the desulfurizer is connected to the reformer 4. The reformer 4 also includes a vaporization unit 24 for vaporizing water supplied from the water pump 5 via the water supply pipe 16 and vaporization unit 24 in order to perform steam reforming in the reformer 4. And a reforming section 25 including a reforming catalyst for performing a reforming reaction between the vaporized water and the raw fuel. The fuel gas generated in the reforming unit 25 is supplied to the manifold 23 through the gas flow pipe 26 and is supplied to the fuel battery cell 22 through the manifold 23.

  FIG. 2 shows a state in which a part (front and rear walls) of the storage container 21 is removed and the cell stack device 28 and the reformer 4 housed inside are taken out rearward. Here, in the fuel cell module M shown in FIG. 2, the cell stack device 28 can be slid and stored in the storage container 21. Note that the cell stack device 28 may include the reformer 4.

  Although not specifically described, an oxygen-containing gas supply pipe (left side in FIG. 2) for supplying an oxygen-containing gas to the fuel battery cell 22 is provided on the bottom surface of the storage container 21 and power generation of the fuel battery cell. An exhaust pipe (on the right side in FIG. 2) for exhausting the generated exhaust gas is connected.

  An oxygen-containing gas introduction member 29 for supplying the oxygen-containing gas supplied from the oxygen-containing gas supply pipe to the fuel cell 22 is disposed inside the storage container 21. In the module M shown in FIG. The oxygen-containing gas introduction member 29 is disposed between the cell stacks 1 juxtaposed on the manifold 23, and the side of the fuel cell 22 is moved from the lower end in accordance with the flow of the fuel gas. An oxygen-containing gas is supplied to the lower end portion of the fuel cell 22 so as to flow toward the upper end portion.

  Then, the fuel gas discharged from the fuel battery cell 22 and the oxygen-containing gas are combusted on the upper end side of the fuel battery cell 22, whereby the temperature of the fuel battery cell 22 can be increased. Start-up can be accelerated. In addition, the fuel gas discharged from the fuel battery cell 22 and the oxygen-containing gas are burned on the upper end side of the fuel battery cell 22 to improve the fuel cell 22 (cell stack 1). The quality device 4 can be warmed. Thereby, the reforming reaction can be efficiently performed in the reformer 4, and the temperature of the module M can be maintained at a high temperature.

  Here, in the fuel cell device of the present embodiment, a high temperature desulfurization device 18 and a room temperature desulfurization device 19 are used as removal devices for removing sulfur components contained in the raw fuel supplied from the raw fuel supply means 2. They are arranged in this order.

  That is, the raw fuel supplied from the raw fuel supply means 2 is first desulfurized in the high temperature desulfurization device 18, and even if the desulfurization in the high temperature desulfurization device 18 is insufficient, the normal temperature desulfurization device 19 continues. Desulfurization treatment is performed at Therefore, the desulfurization treatment of the raw fuel containing the sulfur component can be performed efficiently, and the operation efficiency can be improved.

  In the present embodiment, it is important that the high temperature desulfurization device 18 and the room temperature desulfurization device 19 constituting the desulfurization device are arranged in this order. For example, when the room temperature desulfurization device 19 is disposed on the raw fuel supply means 2 side, the room temperature desulfurization agent provided in the room temperature desulfurization device has a small desulfurization capacity per unit volume. In addition to the cost, the desulfurization apparatus may be increased in size and the fuel cell apparatus may be increased in size.

  On the other hand, in the fuel cell device of the present embodiment, the high-temperature desulfurization device 18 having a high desulfurization capacity is arranged on the upstream side, so that the operation efficiency can be improved and the room temperature desulfurization device 19 can be reduced in size and cost. In addition, the fuel cell device can be reduced in size.

In addition, as the high temperature desulfurization apparatus 18, the desulfurization catalyst can be accommodated in the container, for example. As an example of such a desulfurization catalyst, desulfurization catalysts such as Ni, Cu, Zn, Al, Ag, Fe, and Co can be used. In order to increase the activity of these desulfurization catalysts, the temperature is preferably 100 ° C. or higher, more preferably 180 ° C. or higher, and the upper limit temperature is preferably 350 ° C. or lower, more preferably 290 ° C. or lower.

  In addition, as a support body carrying these desulfurization catalysts, for example, zeolite, silica, manganese oxide, cerium oxide, zirconia, zinc oxide, copper oxide and the like can be used.

  On the other hand, as the room temperature desulfurization device disposed downstream of the high temperature desulfurization device, a known one can be used, and for example, zeolite, zeolite carrying Ag or Cu, activated carbon, or the like can be used. .

  Although not shown in FIG. 1, a flow meter for measuring the amount of raw fuel supplied to the reformer 4 can be arranged upstream of the raw fuel supply pump 20. In this case, when the gas flow meter is provided between the room temperature desulfurization device 19 and the raw fuel supply pump 20, the responsiveness of the raw fuel flow control can be improved.

  In addition, the flow meter can be disposed between the high temperature desulfurization device 18 and the room temperature desulfurization device 19. Generally, upstream of the raw fuel supply pump 20 pulsates with the operation of the raw fuel supply pump 20. Therefore, when a flow meter is arranged between the room temperature desulfurization device 19 and the raw fuel supply pump 20, there is a possibility that an accurate flow rate cannot be measured by the flow meter, but the flow meter is connected to the high temperature desulfurization device 18 and the room temperature. By disposing it between the desulfurization apparatus 19, it is possible to make it less susceptible to the influence of pulsation, and to control the flow rate of the raw fuel stably.

  In addition, the raw fuel, air, and the like of the room temperature desulfurization device 19 and the reformer 4 are prevented from flowing back into the pipe connecting the room temperature desulfurization device 19 and the reformer 4 on the downstream side of the room temperature desulfurization device 19. A shut-off valve can be provided for the purpose, and a pressure reducing valve can be provided on the upstream side of the high temperature desulfurization device 18 to suppress the negative pressure in the pipe connecting the high temperature desulfurization device 18 and the reformer 4. it can.

  FIG. 3 shows another example of the fuel cell system including the fuel cell device of the present embodiment. Compared with the fuel cell system shown in FIG. 1, a high-temperature desulfurization device is arranged on the outer surface of the module. An example is shown.

  As described above, in order to increase the activity of the high temperature desulfurization apparatus 18, the high temperature desulfurization apparatus 18 needs to be set to a temperature of about 100 to 300 ° C. Therefore, a heat source such as a heater can be arranged in the high-temperature desulfurization device 18 and heated in accordance with the desulfurization catalyst. However, in this case, since the electric power generated by the fuel cell is consumed, the operation efficiency ( There is a risk that the power generation efficiency will decrease.

  On the other hand, when the fuel cell 22 is a solid oxide fuel cell, the power generation temperature is as high as about 600 to 1000 ° C., so the module M (housing) containing the fuel cell 22 is contained. The temperature of the outer surface of the container 21) is also high.

  Therefore, by disposing the high-temperature desulfurization device 18 on the outer surface of the module M (storage container 21), the high-temperature desulfurization device 18 can be efficiently heated by the heat of the module M, and the power generation efficiency is prevented from decreasing. In other words, power generation efficiency can be improved.

In addition, although the example which has arrange | positioned the high temperature desulfurization apparatus 18 in the outer surface of the module M was shown in FIG. 3, the same effect can be show | played by arrange | positioning the high temperature desulfurization apparatus 18 in the site | part used as high temperature. Therefore, for example, the high temperature desulfurization device 18 can be provided in the exhaust gas line until the exhaust gas exhausted from the module M is exhausted to the outside of the fuel cell device. Thereby, since the high temperature desulfurization apparatus 18 can be efficiently heated like the above-mentioned, operating efficiency can be improved.

  Further, in a fuel cell device comprising a solid polymer fuel cell as a fuel cell, for example, the heat of the reformer may be effectively used, and provided on the outer surface of the reformer, the reformer What is necessary is just to use effectively the exhaust gas discharged from.

  FIG. 4 is a configuration diagram showing still another example of a fuel cell system including the fuel cell device of the present embodiment.

  When the fuel cell device is started, the temperature of the high temperature desulfurization device 18 may not be sufficient. In this case, the desulfurization process in the high-temperature desulfurization device 18 becomes insufficient, and a large amount of undesulfurized raw fuel is supplied to the normal-temperature desulfurization device 19, so that the activity of the normal-temperature desulfurization device 19 is preferably increased.

  Therefore, the fuel cell system shown in FIG. 4 includes a temperature sensor (not shown) for measuring the temperature of the room temperature desulfurization device 19 and a heating device 30 such as a heater for heating the room temperature desulfurization device 19. The control device 9 controls the operation of the heating device 30 based on the temperature of the room temperature desulfurization device 19 measured by the temperature sensor.

  Thereby, the temperature of the room temperature desulfurization apparatus 19 can be raised, and the activity of the room temperature desulfurization apparatus 19 can be increased.

  When the silver zeolite catalyst is stored in the storage container as the room temperature desulfurization device 19, the control device 9 sets the heating device 30 so that the temperature of the room temperature desulfurization device 19 is in the range of 70 to 130 ° C. It is preferable to control the operation.

  Specifically, the control device 9 preferably performs control to activate the heating device 30 when the room temperature desulfurization device 19 measured by the temperature sensor is lower than a predetermined temperature (for example, 70 ° C.).

  On the other hand, if the temperature of the room temperature desulfurization apparatus 19 becomes too high, the activity of the room temperature desulfurization apparatus 19 is lowered and there is a risk of deterioration. Therefore, the room temperature desulfurization apparatus 19 becomes higher than a predetermined temperature (for example, 130 ° C.). In that case, the control device 9 preferably performs control to stop the operation of the heating device 30.

  Thereby, even when the activity of the high temperature desulfurization device 18 is low at the time of starting the fuel cell device, the activity of the room temperature desulfurization device 19 can be increased, and desulfurization can be performed efficiently.

  5 and 6 are configuration diagrams showing still another example of the fuel cell system including the fuel cell device of the present embodiment.

  Since the raw fuel after the desulfurization treatment in the high-temperature desulfurization apparatus 18 as described above has a high temperature, when the raw fuel is supplied to the room temperature desulfurization apparatus 19 as it is, the temperature of the room temperature desulfurization apparatus 19 rises too much, thereby desulfurization. There is a risk that the performance may decrease. Therefore, the temperature of the raw fuel can be lowered by exchanging the raw fuel after being processed by the high-temperature desulfurization device 18 with another fluid, and the room temperature desulfurization device 19 can be kept in a certain temperature range. In combination with heat exchange with other fluids, the operation efficiency can be further improved.

  Here, in the fuel cell system shown in FIG. 5, the raw fuel desulfurized by the high temperature desulfurization device 18 and the oxygen supplied to the cell stack 1 between the high temperature desulfurization device 18 and the room temperature desulfurization device 19. The example provided with the heat exchanger 31 which heat-exchanges with containing gas is shown.

  As a result, the temperature of the raw fuel after being desulfurized by the high temperature desulfurization apparatus 18 can be lowered, the deterioration of the room temperature desulfurization apparatus 19 can be suppressed, and the oxygen-containing gas whose temperature has been increased in the cell stack 1. Therefore, driving efficiency can be improved.

  In the fuel cell system shown in FIG. 6, the raw fuel that has been desulfurized by the high temperature desulfurization device 18 and the water supplied to the reformer 4 between the high temperature desulfurization device 18 and the room temperature desulfurization device 19. The heat exchanger 33 for exchanging heat is provided, and the water pump 5 and the heat exchanger 33 are connected by a water supply pipe 32.

  Thereby, the temperature of the raw fuel after being desulfurized by the high-temperature desulfurization device 18 can be lowered, the deterioration of the room temperature desulfurization device 19 can be suppressed, and water having a raised temperature can be supplied to the reformer 4. Since the amount of heat of vaporization absorbed by the vaporization section 24 of the reformer 4 can be reduced, the temperature of the cell stack 1 can be maintained at a high temperature and power generation efficiency can be improved. it can.

  Although not shown in the figure, for example, the raw fuel that has been desulfurized by the high-temperature desulfurization device 18 between the high-temperature desulfurization device 18 and the normal-temperature desulfurization device 19 and the raw material supplied to the high-temperature desulfurization device 18. A heat exchanger for exchanging heat with the fuel, a heat exchanger for exchanging heat with the water flowing through the circulation pipe 12, and a raw fuel after desulfurization with the room temperature desulfurization catalyst 19 It is also possible to arrange a heat exchanger that performs heat exchange.

  In any case, the temperature of the raw fuel after being desulfurized by the high-temperature desulfurization device 18 can be lowered, and deterioration of the room temperature desulfurization device 19 can be suppressed.

  When a heat exchanger for exchanging heat between the raw fuel that has been desulfurized by the high-temperature desulfurization apparatus 18 and the raw fuel supplied to the high-temperature desulfurization apparatus 18 is disposed, the heat exchanger is supplied to the high-temperature desulfurization apparatus 18. Since the temperature of the raw fuel can be raised, the desulfurization efficiency in the high-temperature desulfurization device 18 can be improved, and the consumption of electric power or the like for maintaining the high-temperature desulfurization device 18 at a high temperature can be reduced. Efficiency can be improved.

  In addition, when a heat exchanger that performs heat exchange between the raw fuel desulfurized by the high-temperature desulfurization apparatus 18 and the water flowing through the circulation pipe 12 is arranged, the water flowing through the circulation pipe 12 is efficiently heated. Can be.

  Further, when a heat exchanger for exchanging heat between the raw fuel desulfurized by the high temperature desulfurization apparatus 18 and the raw fuel desulfurized by the room temperature desulfurization catalyst 19 is disposed in the reformer 4. The temperature of the supplied raw fuel can be raised, and the reforming efficiency in the reformer 4 can be improved.

  Although the present invention has been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and improvements can be made without departing from the scope of the present invention.

For example, in the above description, when the room temperature desulfurization device 19 measured by the temperature sensor is lower than a predetermined temperature, the control device 9 operates the heating device 30 and the room temperature desulfurization device 19 becomes higher than the predetermined temperature. Although the control for stopping the operation of the heating device 30 has been described, for example, the control device 9 may perform a control for stopping the operation of the heating device 30 after a predetermined time has elapsed after the heating device 30 is operated. . Such a predetermined time can be, for example, 0.5 to 2 hours.

1: Cell stack 4: Reformer 9: Control device 18: High temperature desulfurization device 19: Room temperature desulfurization device 30: Heating device 31, 33: Heat exchanger M: Fuel cell module

Claims (3)

  A desulfurization apparatus for desulfurizing raw fuel containing sulfur supplied from the raw fuel supply means, the desulfurization apparatus comprising: a high-temperature desulfurization apparatus disposed on the raw fuel supply means side; and A fuel cell device comprising a room temperature desulfurization device disposed on the downstream side.   Based on the heating device for raising the temperature of the room temperature desulfurization device, the temperature sensor for measuring the temperature of the room temperature desulfurization device, and the temperature of the room temperature desulfurization device measured by the temperature sensor, The fuel cell device according to claim 1, further comprising a control device that controls operation.   A fuel cell module in which a fuel cell that generates power with a fuel gas and an oxygen-containing gas is stored in a storage container, and raw fuel desulfurized by the room temperature desulfurization device is reformed and supplied to the fuel cell. And a reformer capable of steam reforming for generating fuel gas, and disposed between the high temperature desulfurization apparatus and the room temperature desulfurization apparatus, and the raw fuel after being desulfurized by the high temperature desulfurization apparatus And a heat exchanger for exchanging heat with a fluid supplied to at least one of the high-temperature desulfurization device, the fuel battery cell, and the reformer. Item 3. The fuel cell device according to Item 2.

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