JP5550453B2 - Fuel cell module and fuel cell device - Google Patents

Description

  The present invention relates to a fuel cell module in which a plurality of fuel cells are stored in a storage container, and a fuel cell device including the fuel cell module.

  In recent years, as next-generation energy, a fuel cell (hydrogen-containing gas) and air (oxygen-containing gas) are used as a cell stack formed by arranging a plurality of fuel cells that can obtain electric power, or a raw material such as natural gas. Various fuel cell modules in which a reformer or the like for reforming fuel into fuel gas is housed in a housing container, and fuel cell devices in which a fuel cell module is housed in an outer case have been proposed.

  In such a fuel cell module, fuel gas that has not been used for power generation of the fuel cell is burned, and a reformer performs an efficient reforming reaction, and the inside of the fuel cell module is maintained at a high temperature. Thus, highly efficient power generation can be performed.

  By the way, in such a fuel cell module, exhaust gas containing carbon monoxide may be generated by reforming raw fuel or incomplete combustion when burning fuel gas not used in power generation. is there.

  Therefore, the exhaust gas containing the carbon monoxide is provided with the first exhaust gas treatment device in the exhaust gas inlet or the exhaust gas flow channel for exhausting the exhaust gas so that the exhaust gas containing the carbon monoxide is not exhausted outside the fuel cell device. A fuel cell module including a second exhaust gas treatment device connected to or in the exhaust hole is proposed (for example, see Patent Document 1).

JP 2009-110675 A

  By the way, in the fuel cell module described in Patent Document 1, by providing two exhaust gas treatment devices, exhaust gas generated in the fuel cell module can be purified efficiently, but the first exhaust gas treatment device is an exhaust gas. Since it is placed in the inlet of the flow path or in the exhaust gas flow path, there is room for improvement in that the heat associated with the purification of the exhaust gas cannot be efficiently used for the reforming reaction of the raw fuel or the power generation of the fuel cell. It was.

  Accordingly, an object of the present invention is to provide a fuel cell module capable of improving the reforming efficiency of raw fuel, thereby improving the power generation efficiency, and a fuel cell device including the same.

The fuel cell module of the present invention is configured to generate power with an oxygen-containing gas and a fuel gas in a power generation chamber provided in a storage container, and to burn excess fuel gas not used for power generation at one end side. One of the cell stacks in which a plurality of fuel cells are arranged and electrically connected to each other and the raw fuel arranged at a distance from one end side of the cell stack are reformed and supplied to the fuel cells. A reformer for generating fuel gas and an exhaust gas treatment device provided with a combustion catalyst for purifying exhaust gas disposed in contact with the reformer are housed outside the cell stack, Inner walls are arranged along the arrangement direction of the fuel cells, and the exhaust gas treatment device is arranged on the surface of the reformer on the cell stack side, and in the arrangement direction of the fuel cells. Along the se Characterized in that in contact with each of the inner wall located on opposite sides of the stack.

The fuel cell module of the present invention is configured to generate power with an oxygen-containing gas and a fuel gas in a power generation chamber provided in a storage container, and to burn excess fuel gas not used for power generation at one end side. One of the cell stacks in which a plurality of fuel cells are arranged and electrically connected to each other and the raw fuel arranged at a distance from one end side of the cell stack are reformed and supplied to the fuel cells. A reformer for generating fuel gas and an exhaust gas treatment device provided with a combustion catalyst for purifying exhaust gas disposed in contact with the reformer are housed outside the cell stack, Inner walls are arranged along the arrangement direction of the fuel cells, and the exhaust gas treatment device is arranged on both side surfaces of the reformer along the arrangement direction of the fuel cells, and the fuel Battery cell array Characterized that you have contact with each of said inner walls disposed on both sides of the cell stack along the direction.

The fuel cell module of the present invention is configured to generate power with an oxygen-containing gas and a fuel gas in a power generation chamber provided in a storage container, and to burn excess fuel gas not used for power generation at one end side. One of the cell stacks in which a plurality of fuel cells are arranged and electrically connected to each other, and the fuel cell cell is reformed by refining the raw fuel, which is spaced apart from one end of the cell stack.
A cell stack comprising: a reformer for generating fuel gas to be supplied to the fuel; and an exhaust gas treatment device disposed in contact with the reformer and provided with a combustion catalyst for purifying exhaust gas. An inner wall is disposed outside the fuel cell along the arrangement direction of the fuel cells, and the exhaust gas treatment device includes a surface of the reformer on the cell stack side, and the fuel cell of the reformer. sequences are arranged on the both sides along the direction, and characterized that you have contact with each of the inner wall arranged along a direction arranged on both sides of the cell stack of the fuel cell.

The fuel cell module of the present invention is configured to generate power with an oxygen-containing gas and a fuel gas in a power generation chamber provided in a storage container, and to burn excess fuel gas not used for power generation at one end side. A plurality of cell stacks in which a plurality of fuel cells are arranged and electrically connected to each other, and a raw fuel arranged at a distance from one end side of the cell stack is reformed and supplied to the fuel cells. The cell located on the outermost side is housed with a reformer for generating fuel gas and an exhaust gas treatment device provided with a combustion catalyst for purifying exhaust gas disposed in contact with the reformer. An inner wall is arranged outside the stack along the arrangement direction of the fuel cells, and is suspended from above the power generation chamber between the adjacent cell stacks, and oxygen-containing gas is supplied to the fuel cells. Supply An oxygen-containing gas supply member is disposed, the exhaust gas treatment device is disposed on a surface of the reformer on the cell stack side, and the oxygen-containing gas located on both sides of the cell stack In contact with the supply member or the inner wall
It is characterized by that .

The fuel cell module of the present invention is configured to generate power with an oxygen-containing gas and a fuel gas in a power generation chamber provided in a storage container, and to burn excess fuel gas not used for power generation at one end side. A plurality of cell stacks in which a plurality of fuel cells are arranged and electrically connected to each other, and a raw fuel arranged at a distance from one end side of the cell stack is reformed and supplied to the fuel cells. The cell located on the outermost side is housed with a reformer for generating fuel gas and an exhaust gas treatment device provided with a combustion catalyst for purifying exhaust gas disposed in contact with the reformer. An inner wall is arranged outside the stack along the arrangement direction of the fuel cells, and is suspended from above the power generation chamber between the adjacent cell stacks, and oxygen-containing gas is supplied to the fuel cells. Supply An oxygen-containing gas supply member is disposed, the exhaust gas treatment device is disposed on both side surfaces of the reformer along the arrangement direction of the fuel cells, and on both sides of the cell stack. in contact with the oxygen-containing gas supply member or the inner wall located and wherein Rukoto.

The fuel cell module of the present invention is configured to generate power with an oxygen-containing gas and a fuel gas in a power generation chamber provided in a storage container, and to burn excess fuel gas not used for power generation at one end side. A plurality of cell stacks in which a plurality of fuel cells are arranged and electrically connected to each other, and a raw fuel arranged at a distance from one end side of the cell stack is reformed and supplied to the fuel cells. The cell located on the outermost side is housed with a reformer for generating fuel gas and an exhaust gas treatment device provided with a combustion catalyst for purifying exhaust gas disposed in contact with the reformer. An inner wall is arranged outside the stack along the arrangement direction of the fuel cells, and is suspended from above the power generation chamber between the adjacent cell stacks, and oxygen-containing gas is supplied to the fuel cells. Supply An oxygen-containing gas supply member is disposed, and the exhaust gas treatment unit includes a surface on the cell stack side of the reformer and both side surfaces of the reformer along the arrangement direction of the fuel cells. They are arranged in bets, and characterized that you have contact with the oxygen-containing gas supply member or the inner wall located on either side of the cell stack.

  In the fuel cell module of the present invention, the exhaust gas treatment device may have a length equal to or longer than the length along the arrangement direction of the fuel cells of the reformer.

A fuel cell device according to the present invention is characterized in that any one of the fuel cell modules described above and an auxiliary machine for operating the fuel cell module are housed in an outer case.

  According to the fuel cell module of the present invention, the exhaust gas generated in the fuel cell module can be efficiently purified, and the heat accompanying the purification of the exhaust gas is efficiently transferred to the reformer, thereby improving the reforming efficiency. The power generation efficiency can be improved. Further, by storing the fuel cell module and an auxiliary machine for operating the fuel cell module in the outer case, a fuel cell device with improved power generation efficiency can be obtained.

It is a disassembled perspective view which shows one Embodiment of the fuel cell module formed by accommodating one cell stack in a power generation chamber. FIG. 2 is a cross-sectional view schematically showing the fuel cell module shown in FIG. 1. It is sectional drawing which shows schematically other embodiment of the fuel cell module formed by accommodating one cell stack in a power generation chamber. It is sectional drawing which shows schematically other embodiment of the fuel cell module formed by accommodating one cell stack in a power generation chamber. It is sectional drawing which shows schematically other embodiment of the fuel cell module formed by accommodating one cell stack in a power generation chamber. It is a disassembled perspective view which shows one Embodiment of the fuel cell module which accommodates two cell stacks in a power generation chamber. FIG. 7 is a cross-sectional view schematically showing the fuel cell module shown in FIG. 6. It is sectional drawing which shows schematically other embodiment of the fuel cell module formed by accommodating one cell stack in a power generation chamber. It is sectional drawing which shows schematically other embodiment of the fuel cell module formed by accommodating one cell stack in a power generation chamber. It is sectional drawing which shows schematically other embodiment of the fuel cell module formed by accommodating one cell stack in a power generation chamber. It is a disassembled perspective view which shows one Embodiment of a fuel cell apparatus.

  FIG. 1 is an exploded perspective view showing one embodiment of a fuel cell module (hereinafter sometimes referred to as a module) of the present invention. In the following drawings, the same numbers are assigned to the same members.

  In a module 1 shown in FIG. 1, a columnar fuel cell 3 having a gas flow path (not shown in FIG. 1) through which gas flows is provided in a power generation chamber provided inside a storage container 2. A current collecting member (not shown in FIG. 1) is arranged between adjacent fuel cells 3 to be electrically connected in series, and the lower end of the fuel cells 3 is glass sealed. The cell stack 4 (cell stack device 9) is configured to be fixed to the manifold 6 with an insulating bonding material (not shown) such as a material. FIG. 1 shows a case where only one cell stack 4 is stored in the storage container 2. In addition, conductive members 5 having current drawing portions for collecting and drawing the current generated by the power generation of the cell stack 4 (fuel cell 3) to the outside are disposed on both ends of the cell stack 4. Yes.

  In FIG. 1, the fuel cell 3 is a hollow plate type having a gas flow path through which fuel gas (hydrogen-containing gas) flows in the longitudinal direction. A solid oxide fuel cell 3 in which an electrode layer, a solid electrolyte layer, and an oxygen electrode layer are sequentially laminated is illustrated.

  Further, in FIG. 1, in order to obtain fuel gas used for power generation of the fuel battery cell 3, fuel gas is generated by reforming raw gas such as natural gas or kerosene supplied through the raw fuel supply pipe 10. The reformer 7 is arranged above the cell stack 4 (fuel cell 3). The fuel gas generated by the reformer 7 is supplied to the manifold 6 via the fuel gas flow pipe 8 and is supplied from the manifold 6 to a gas flow path provided inside the fuel cell 3. The configuration of the cell stack device 9 can be changed as appropriate depending on the type and shape of the fuel cell 3. For example, the reformer 7 can be included in the cell stack device 9.

  When steam reforming is performed in the reformer 7, the reformer 7 is provided with a vaporizing section for vaporizing water and a reforming catalyst that performs steam reforming with raw fuel and steam. For example, in addition to arranging the vaporization section and the reforming section so as to be continuous, the vaporization section is disposed on the central side of the reformer 7, and the reforming sections are disposed on both ends thereof. In this case, each reforming section and the manifold 6 can be connected to each other by a fuel gas flow pipe 8.

  Further, FIG. 1 shows a state where a part (front and rear surfaces) of the storage container 2 is removed and the cell stack device 9 stored inside is taken out rearward. Here, in the module 1 shown in FIG. 1, the cell stack device 9 can be slid and stored in the storage container 2.

  In the storage container 2 shown in FIG. 1, an oxygen-containing gas supply pipe 11 for supplying an oxygen-containing gas (usually air) supplied to the fuel cell 3 to the bottom surface of the storage container 2; An exhaust pipe 12 for exhausting exhaust gas generated by power generation of the fuel cell 3 to the outside of the storage container 2 is connected. The oxygen-containing gas supply pipe 11 and the exhaust pipe 12 may be a double pipe.

  FIG. 2 is a cross-sectional view schematically showing the fuel cell module 1 shown in FIG.

  In the storage container 2, an outer frame of the storage container 2 is formed by the outer wall 13, and a power generation chamber 38 that stores the fuel cell 3 (cell stack device 9) is formed therein.

  In such a storage container 2, an oxygen-containing gas or the like is formed between both side portions along the arrangement direction of the fuel cells 3 constituting the cell stack 4 and the outer wall 13 of the storage container 2 facing the both side portions. A flow path for flowing exhaust gas is provided.

  Here, in the storage container 2, a first wall 14 is formed inside the outer wall 13 on both sides along the arrangement direction of the fuel cells 3 at a predetermined interval, and inside the first wall 14. The second wall 15 is disposed at a predetermined interval, and the third wall 16 is disposed at a predetermined interval inside the second wall 15.

  Thereby, the space formed by the outer wall 13 and the first wall 14 becomes the first flow path 17, and the space formed by the second wall 15 and the third wall 16 becomes the second flow path 18. Thus, the space formed by the first wall 14 and the second wall 15 becomes the third flow path 19. Further, an upper wall 39 for forming the power generation chamber 38 is provided above the power generation chamber 38, and the first flow path is formed between the upper wall 39 and the outer wall 13 (the upper wall of the storage container 2). It becomes the 4th channel 20 for flowing the oxygen content gas which flows into the 2nd channel. The power generation chamber 38 is a space surrounded by the upper wall 39, the third wall 16, and the power generation chamber bottom wall 40 connected to the second wall 15 and the third wall 16.

An oxygen-containing gas supply pipe 11 for supplying oxygen-containing gas (air) into the storage container 2 is connected to the bottom of the storage container 2, and oxygen-containing gas supplied from the oxygen-containing gas supply pipe 11 is connected. The gas flows into the oxygen-containing gas introduction part 22. Since the oxygen-containing gas introduction unit 22 is connected to the first flow path 17 via the oxygen-containing gas introduction port 23, the oxygen-containing gas supplied to the oxygen-containing gas introduction unit 22 passes through the oxygen-containing gas introduction port 23. It flows to the first flow path 17. The oxygen-containing gas that has flowed upward in the first flow path 17 then flows in a fourth flow path 20 to be described later, and flows into the second flow path 18 through the second flow path inlet 24. Then, the oxygen-containing gas that has flowed through the second flow path 18 from the upper side to the lower side is supplied into the power generation chamber 38 (fuel cell 3) through the oxygen-containing gas blowing port 25 provided in the third wall 16. The Insulating material 26 is arranged on the side surface and bottom surface of fuel cell 3 (cell stack 4).

  Further, in the storage container 2 shown in FIG. 2, an exhaust gas collection chamber 21 for collecting the exhaust gas in the power generation chamber 38 and flowing it to the third flow path 19 is disposed above the power generation chamber 38. The exhaust gas that has flowed into the exhaust gas collection chamber 21 flows into the third flow path 19 through the exhaust gas circulation port 27 that passes through the second flow path 18. The exhaust gas flowing in the third flow path 19 flows from the upper direction to the lower direction in the third flow path, and then flows through the exhaust gas collection port 28 to the exhaust gas collection section 29 provided on the upper part of the oxygen-containing gas introduction section 22. Thereafter, the gas is exhausted to the outside of the storage container 2 through the exhaust pipe 12 (see FIG. 1) connected to the exhaust gas collecting unit 29.

  Therefore, the oxygen-containing gas supplied from the oxygen-containing gas introduction pipe 11 is heat-exchanged with the exhaust gas flowing through the exhaust gas collection unit 29 while flowing through the oxygen-containing gas introduction unit 22, and the first flow path 17 is moved upward. During the flow, heat is exchanged with the exhaust gas flowing downward through the third flow path 19, and heat is exchanged with the heat within the power generation chamber 38 while flowing downward through the second flow path 18. Here, by providing the exhaust gas collection chamber 21 above the power generation chamber 38, the exhaust gas having a high temperature can be efficiently passed through the third flow path 19, and the oxygen-containing gas supplied to the fuel cell 3 and Heat exchange can be performed efficiently. Thereby, the power generation efficiency of the fuel battery cell 3 can be improved.

  Further, by adopting such a configuration for the storage container 2, the module 1 that is particularly useful when storing one cell stack 4 (cell stack device 9) in the power generation chamber 38 can be obtained.

  By the way, the oxygen-containing gas flowing through the first flow path 17 and the fourth flow path 20 and flowing into the second flow path 18 is heat-exchanged with heat in the power generation chamber 38 and heat of exhaust gas in the flow process. It becomes high temperature. Further, the temperature of the exhaust gas flowing through the third flow path 19 is lowered by heat exchange with the oxygen-containing gas flowing through the first flow path 17. Here, the heat of the oxygen-containing gas flowing through the second flow path 18 is transferred to the exhaust gas flowing through the third flow path 19, and the temperature of the oxygen-containing gas may be lowered.

  Therefore, the second flow path 18 is provided between the second flow path 18 and the third flow path 19 or in at least one of the second flow path 18 and the third flow path 19. A heat exchange suppressing member for suppressing heat exchange between the flowing oxygen-containing gas and the exhaust gas flowing through the third flow path 19 can be provided. In FIG. 2, the heat insulating material 26 is disposed on the second flow path 18 side in the third flow path 19. Thereby, heat exchange between the oxygen-containing gas flowing through the second flow path 18 and the exhaust gas flowing through the third flow path 19 can be reduced, and the temperature drop of the oxygen-containing gas flowing through the second flow path 18 can be reduced. Can be reduced.

  In such a module 1, the fuel gas that has not been used for power generation of the fuel battery cell 3 is burned at one end side (upper end side) of the cell stack 4, so that the temperature of the reformer 7 and the power generation chamber 38 are increased. The internal temperature can be increased efficiently, so that the reforming efficiency can be improved and the power generation efficiency can be improved.

  However, depending on the state of the reforming reaction in the reformer 7 and the combustion state of excess fuel gas at one end of the cell stack 4, incomplete combustion may occur. In this case, carbon monoxide There is a case where exhaust gas containing is produced. Therefore, in order to detoxify (purify) the exhaust gas, it is known that an exhaust gas treatment device is provided in the module. However, depending on the location of the exhaust gas treatment device, the heat generated by the purification of the exhaust gas may be changed. There is a case where it cannot be efficiently used for quality reaction or power generation of fuel cells, and there is room for improvement in this respect.

  Therefore, in the module 1 shown in FIG. 2, the exhaust gas is in contact with the reformer 7 for reforming the raw fuel, which is disposed in the power generation chamber 38 and spaced from one end side of the cell stack 4. In particular, in the module 1 shown in FIG. 2, the exhaust gas treatment device 31 is provided on the surface of the reformer 7 on the cell stack 4 side (in FIG. 2). The bottom surface of the reformer 7 is disposed.

  Thereby, in the exhaust gas treatment device 31, heat generated when the exhaust gas generated due to power generation of the fuel cell 3 or combustion of surplus fuel gas can be efficiently transferred to the reformer 7, The reforming efficiency in the reformer 7 can be improved. Thereby, the power generation efficiency of the fuel battery cell 3 can be improved.

  Here, as the combustion catalyst provided in the exhaust gas treatment device 31, generally known catalysts can be used, and based on the reforming reaction temperature in the reformer 7, the power generation temperature of the fuel cell 3, and the like. For example, a combustion catalyst in which a catalyst such as platinum or palladium or the like is supported on a porous carrier such as γ-alumina, α-alumina, or cordierite can be used.

  The exhaust gas treatment device 31 may be, for example, a shape in which the combustion catalyst is accommodated in a case or a honeycomb type combustion catalyst (hereinafter abbreviated as a honeycomb catalyst). In addition, as a honeycomb catalyst, it can select suitably according to the set temperature range (operation temperature), for example, a metal honeycomb catalyst etc. can be used.

  Here, the module 1 shown in FIG. 2 includes a second exhaust gas treatment device 32 in the exhaust pipe 12. Thereby, the exhaust gas treatment device 31 disposed in the power generation chamber 38 and the second exhaust gas treatment device 32 disposed in the exhaust pipe 12 can treat the exhaust gas, and more efficiently purify the exhaust gas. Can be done. Note that the second exhaust gas treatment device 32 can have the same configuration as the above-described exhaust gas treatment device 31.

  In particular, the fuel cell 3 is configured to burn fuel gas that has not been used for power generation at one end (upper end) side, and the space between the reformer 7 and the cell stack 4 is used for power generation. Since the combustion unit 30 for burning the fuel gas that has not been used is disposed, the exhaust gas treatment device 31 is disposed in contact with the reformer 4, so that the inside of the power generation chamber 38 is activated as in the startup of the module 1. Even when the temperature of the exhaust gas treatment device 31 is not sufficiently increased, the temperature of the exhaust gas treatment device 31 can be increased by the combustion heat generated by burning the fuel gas not used for power generation, thereby efficiently. The exhaust gas can be purified.

  In disposing the exhaust gas treatment device 31 and the second exhaust gas treatment device 32, the operation temperature of the combustion catalyst included in the exhaust gas treatment device 31 is set higher than the operation temperature of the combustion catalyst included in the second exhaust gas treatment device 32. Can be set.

As shown in FIG. 2, the temperature of the exhaust gas generated with the operation of the module 1 is high at the upper end side of the fuel cell 3, and is lower than that at the upper end side of the fuel cell 3 in the exhaust pipe 12. Therefore, by setting the operating temperature of the combustion catalyst of the exhaust gas treatment device 31 to be higher than the operating temperature of the combustion catalyst of the second exhaust gas treatment device 32, each exhaust gas treatment device purifies the exhaust gas more efficiently. be able to.

  Here, since the operating temperature of the combustion catalyst is shown in a specific temperature range, a part of the operating temperature may be overlapped. For example, the minimum operating temperature (starting temperature) or the maximum operating temperature (heat-resistant temperature) And the like, it is only necessary that the combustion catalyst of the exhaust gas treatment device 31 has a minimum operable temperature or a maximum temperature higher than that of the combustion catalyst of the second exhaust gas treatment device 32. .

  FIG. 3 is a cross-sectional view schematically showing another embodiment of a module in which one cell stack 4 is accommodated in the power generation chamber 38.

  In the module 33 shown in FIG. 3, the exhaust gas treatment device 34 is disposed in contact with the surface of the reformer 7 on the cell stack 4 side (the bottom surface of the reformer 7), and is positioned on both sides of the cell stack 4. In contact with the third wall 16. In other words, the exhaust gas treatment device 34 extends from one third wall 16 to the other third wall 16 so as to cross the power generation chamber 38.

  As a result, the exhaust gas generated due to the power generation of the fuel cell 3 and the combustion of surplus fuel gas is processed in the exhaust gas processor 34 and then flows into the third flow path 19. In addition, the exhaust gas can be purified efficiently and the amount of heat transferred to the reformer 7 can be increased. Therefore, the reforming efficiency in the reformer 7 can be improved, and thereby the power generation efficiency of the fuel cell 3 can be improved.

  FIG. 4 is a cross-sectional view schematically showing another embodiment of a module in which one cell stack 4 is accommodated in the power generation chamber 38.

  In the module 35 shown in FIG. 4, the exhaust gas treatment device 36 is disposed on both side surfaces along the arrangement direction of the fuel cells 3 of the reformer 7, and the third is located on both sides of the cell stack 4. It is in contact with the wall 16. In other words, the exhaust gas treatment device 34 and the reformer 7 are arranged so that the power generation quality 38 is divided into upper and lower parts.

  Also in such a module 35, the exhaust gas generated by the power generation of the fuel cell 3 and the combustion of surplus fuel gas flows into the third flow path 19 after being processed by the exhaust gas treatment device 36. The exhaust gas treatment device 36 can efficiently purify the exhaust gas and increase the amount of heat transferred to the reformer 7. Therefore, the reforming efficiency in the reformer 7 can be improved, and thereby the power generation efficiency of the fuel cell 3 can be improved.

  The exhaust gas treatment device 36 is separately provided on both side surfaces along the arrangement direction of the fuel cells 3 of the reformer 7, and one side surface of the reformer 7 is arranged along the arrangement direction of the fuel cells 3. After extending, the other side surface of the reformer 7 can be turned into one exhaust gas processor 36 extending in the arrangement direction of the fuel cells 3.

  FIG. 5 is a cross-sectional view schematically showing another embodiment of a module in which one cell stack 4 is accommodated in the power generation chamber 38.

  In the module 37 shown in FIG. 5, the exhaust gas treatment device is disposed in contact with the surface of the reformer 7 on the cell stack 4 side (the bottom surface of the reformer 7) and is located on both sides of the cell stack 4. The exhaust gas treatment device 34 in contact with the third wall 16 and the third side of the reformer 7 are arranged on both side surfaces along the arrangement direction of the fuel cells 3 and are located on both sides of the cell stack 4. The exhaust gas treatment device 36 is in contact with the wall 16.

  In such a module 37, the exhaust gas generated by the power generation of the fuel cell 3 and the combustion of surplus fuel gas is first treated by the exhaust gas treatment device 34, and the exhaust gas not treated by the exhaust gas treatment device 34 is treated. Then, it is processed by the exhaust gas processing device 36.

  Therefore, the exhaust gas can be purified efficiently and the amount of heat transferred to the reformer 7 can be increased. Therefore, the reforming efficiency in the reformer 7 can be improved, and thereby the power generation efficiency of the fuel cell 3 can be improved.

  In the module 37 shown in FIG. 5, the exhaust gas treatment device 34 and the exhaust gas treatment device 36 can be manufactured as an integral unit, and the exhaust gas treatment device can be arranged on the upper side of the reformer 7.

  Further, the exhaust gas treatment device 34 and the exhaust gas treatment device 36 are arranged in the arrangement of the fuel battery cells 3 of the reformer 7 in order to more efficiently treat the exhaust gas generated due to the power generation of the fuel battery cells 3 and the combustion of surplus fuel gas. The length can be longer than the length along the direction. As a result, most of the exhaust gas generated by the power generation of the fuel battery cell 3 and the combustion of surplus fuel gas flows to the third flow path 19 after being processed by the exhaust gas processing device 34 and the exhaust gas processing device 36. Therefore, the exhaust gas can be purified efficiently and the amount of heat transferred to the reformer 7 can be increased. Therefore, the reforming efficiency in the reformer 7 can be improved, and thereby the power generation efficiency of the fuel cell 3 can be improved.

  FIG. 6 is an exploded perspective view showing an embodiment of a fuel cell module in which two cell stacks are housed in a power generation chamber.

  In the module 41 shown in FIG. 6, a columnar fuel cell 43 having a gas flow path through which fuel gas flows is arranged inside the storage container 42 in an upright manner, and adjacent fuel cell cells 43 are arranged. Two cell stacks 45, which are electrically connected in series with a current collecting member (not shown) interposed therebetween, are fixed to the manifold 44 with an insulating bonding material (not shown) such as a glass sealant. Thus, the cell stack device 52 is configured. At both ends of the cell stack 45, conductive members having current drawing portions for collecting and drawing the current generated by the power generation of the cell stack 45 (fuel cell 43) to the outside are arranged ( Not shown). The fuel cell 43 can have the same configuration as the fuel cell 3 described above.

  In FIG. 6, the reformer 46 has a folded structure that extends from one end side of one cell stack 45 to the other end side, is folded at the other end side, and extends to one end side of the other cell stack 45. 46, a reforming section in which a vaporizing section 47 for vaporizing water and a reforming catalyst for reforming raw fuel into fuel gas are arranged in order to perform steam reforming, which is an efficient reforming reaction. 48. The fuel gas generated in the reforming unit 48 is supplied to the manifold 44 through the fuel gas circulation pipe 49 and is supplied from the manifold 44 to the gas flow path directed to the inside of the fuel cell 43.

  Further, FIG. 6 shows a state in which a part (front and rear surfaces) of the storage container 42 is removed and the cell stack device 52 stored inside is taken out rearward. Here, in the module 41 shown in FIG. 6, the cell stack device 52 can be slid and stored in the storage container 42.

The storage container 42 is disposed between the cell stacks 45 juxtaposed to the manifold 44 so that the oxygen-containing gas flows laterally from the lower end to the upper end of the fuel cell 43. A contained gas introduction member 58 is disposed. The oxygen-containing gas introduction member 58
Will be described later.

  In the storage container 42 shown in FIG. 6, it is generated on the bottom surface of the storage container 42 by an oxygen-containing gas supply pipe 51 for supplying an oxygen-containing gas to be supplied to the fuel battery cell 43 and power generation of the fuel battery cell 3. An exhaust pipe 72 for exhausting the exhaust gas to the outside of the storage container 42 is connected. The oxygen-containing gas supply pipe 51 and the exhaust pipe 72 may be a double pipe.

  FIG. 7 is a cross-sectional view schematically showing the module 41 shown in FIG.

  The storage container 42 constituting the module 41 has a double structure having an outer wall 52 and an inner wall 53, and an outer frame of the storage container 42 is formed by the outer wall 52. In the module 41 (storage container 42), an oxygen-containing gas flow path 55 through which an oxygen-containing gas introduced into the fuel cell 43 flows is provided between the outer wall 52 and the inner wall 53.

  Here, the storage container 42 is provided with an oxygen-containing gas inlet 73 and a flange portion 59 for the oxygen-containing gas to flow into the upper end side, and oxygen-containing gas at the lower end portion of the fuel cell 43 at the lower end portion. An oxygen-containing gas introduction member 58 provided with an oxygen-containing gas outlet 70 for introduction is inserted through the inner wall 53 and fixed so as to be positioned between adjacent cell stacks 45.

  Further, an exhaust gas inner wall 54 is provided on the inner side of the inner wall 53 along the arrangement direction of the fuel battery cells 43, and between the inner wall 53 and the exhaust gas inner wall 54, power generation or surplus of the fuel battery cell 43 is performed. An exhaust gas flow path 56 in which the exhaust gas generated by the combustion of the fuel gas flows downward from above is used. The exhaust gas channel 56 communicates with an exhaust pipe 72 connected to the bottom of the storage container 42.

  Here, the space surrounded by the exhaust gas inner wall 54, the upper wall 75 connected to the inner wall 53, and the power generation chamber bottom wall 74 is a power generation chamber 71 for storing the cell stack 45.

  Further, in the power generation chamber 71, the temperature in the module 41 is maintained at a high temperature so that the heat in the module 41 is extremely dissipated and the temperature of the fuel cell 43 (cell stack 5) is lowered and the power generation amount is not reduced. The heat insulating material 60 for doing is provided suitably.

  The heat insulating material 60 is preferably disposed in the vicinity of the cell stack 45, and in particular, disposed on the side surface side of the cell stack 45 along the arrangement direction of the fuel cell cells 43, and the fuel cell unit on the side surface of the cell stack 45. It is preferable to arrange the heat insulating material 60 having a width equal to or larger than the width along the arrangement direction of 43. Preferably, the heat insulating material 60 is preferably disposed on both side surfaces of the cell stack 45. Thereby, it can suppress effectively that the temperature of the cell stack 45 falls. Further, the oxygen-containing gas introduced from the oxygen-containing gas introduction member 58 can be suppressed from being discharged from the side surface side of the cell stack 45, and the flow of the oxygen-containing gas between the fuel cells 43 constituting the cell stack 45. Can be promoted. In the heat insulating material 60 disposed on both side surfaces of the cell stack 45, the flow of the oxygen-containing gas supplied to the fuel cell 43 is adjusted, and the longitudinal direction of the cell stack 45 and the stacking direction of the fuel cell 43 are adjusted. An opening 77 is provided to reduce the temperature distribution at.

Here, in the heat insulating material 60 disposed on the exhaust gas inner wall 54 side of the cell stack 45, in providing the opening 77, heat insulation is disposed above and below the cell stack 45 and extends along the arrangement direction of the fuel cells 43. The opening 77 can also be formed by combining the material 60 and the heat insulating material 60 arranged in contact with the exhaust gas inner wall 54. The heat insulating material 60 disposed in contact with the exhaust gas inner wall 54 can also be disposed to extend to the upper end of the exhaust gas inner wall 54.

  When the oxygen-containing gas introduction member 58 disposed between the adjacent cell stacks 45 is disposed by direct welding or the like with the upper wall 75, the heat of the oxygen-containing gas having a low temperature flowing through the inside is reduced. Heat is transferred to the lower upper wall 75, the temperature of the oxygen-containing gas introduction member 58 is lowered, and accordingly, the temperature of the cell stack 45 is lowered, and the power generation efficiency of the cell stack 45 may be lowered.

  Therefore, in the module 41 shown in FIG. 7, the oxygen-containing gas introduction member 58 is provided with an oxygen-containing gas inlet 73 and a flange portion 59 on one end side (upper end side) through which oxygen-containing gas flows. The heat insulating material 60 that is one of members having heat resistance and low thermal conductivity is disposed between the flange portion 59 and the upper wall 75.

  Thereby, the heat in the power generation chamber 71 transferred to the oxygen-containing gas introduction member 58 can reduce the amount of heat transfer to the upper wall 75 having a low temperature, and the temperature of the oxygen-containing gas introduction member 58 is maintained at a high temperature. Can do. Thereby, the power generation efficiency of the cell stack 45 can be improved.

  In such a module 41, the fuel gas that has not been used for power generation of the fuel battery cell 43 is combusted on one end side (upper end side) of the cell stack 45, so that the temperature of the reformer 46 and the power generation chamber 71 are increased. The internal temperature can be increased efficiently, so that the reforming efficiency can be improved, and thereby the power generation efficiency can be improved.

  However, incomplete combustion or the like may occur depending on the state of the reforming reaction in the reformer 46 and the combustion state of excess fuel gas at one end of the cell stack 44. In this case, carbon monoxide There is a case where exhaust gas containing is produced. Therefore, in order to detoxify (purify) the exhaust gas, it is known that an exhaust gas treatment device is provided in the module. However, depending on the location of the exhaust gas treatment device, the heat generated by the purification of the exhaust gas may be changed. There is a case where it cannot be efficiently used for quality reaction or power generation of fuel cells, and there is room for improvement in this respect.

  Therefore, in the module 41 shown in FIG. 7, the reformer 46 for reforming the raw fuel disposed in the power generation chamber 71 and spaced apart from one end side (upper end side) of the cell stack 44 is provided. In contact therewith, an exhaust gas treatment device 62 provided with a combustion catalyst for purifying exhaust gas is provided. Particularly in the module 41 shown in FIG. 7, the exhaust gas treatment device 62 is provided on the surface of the reformer 46 on the cell stack 44 side ( In FIG. 7, it is disposed on the bottom surface of the reformer 62.

  Thereby, in the exhaust gas treatment device 62, the heat generated when the exhaust gas generated due to the power generation of the fuel cell 43 and the combustion of surplus fuel gas can be efficiently transferred to the reformer 46, The reforming efficiency in the reformer 46 can be improved. Thereby, the power generation efficiency of the fuel battery cell 43 can be improved.

  In addition, as a combustion catalyst with which the exhaust gas treatment device 62 is provided, the same catalyst as the combustion catalyst with which the above-mentioned exhaust gas treatment device 31 is provided can be used, and the shape thereof is also a shape formed by housing the combustion catalyst in the case. Or it can be a honeycomb type.

  Further, the module 41 shown in FIG. 7 also includes the second exhaust gas treatment device 63 in the exhaust pipe 72 as in the above-described module 1 and the like. Thereby, the exhaust gas treatment device 62 arranged in the power generation chamber 71 and the second exhaust gas treatment device 63 arranged in the exhaust pipe 72 can treat the exhaust gas, and more efficiently purify the exhaust gas. Can be done. Note that the second exhaust gas treatment device 63 can have the same configuration as the above-described exhaust gas treatment device 62.

  In the module 41 shown in FIG. 7, the fuel battery cell 43 is configured to burn the fuel gas that has not been used for power generation on one end (upper end) side, and the reformer 46, the cell stack 45, Is a combustion section 64 for burning fuel gas that has not been used for power generation. By placing the exhaust gas treatment device 62 in contact with the reformer 46, the module 41 can be Thus, even if the temperature in the power generation chamber 71 is not sufficiently increased, the temperature of the exhaust gas treatment device 62 can be increased by the combustion heat generated by burning the fuel gas that has not been used for power generation. Thus, the exhaust gas can be efficiently purified.

  In arranging the exhaust gas treatment device 62 and the second exhaust gas treatment device 63, the operating temperature of the combustion catalyst that the exhaust gas treatment device 62 has is set higher than the operating temperature of the combustion catalyst that the second exhaust gas treatment device 63 has. Can be set.

  The temperature of the exhaust gas generated with the operation of the module 41 is high at the upper end side of the fuel cell 43 and lower than that at the upper end side of the fuel cell 43 in the exhaust pipe 72. By setting the operating temperature of the combustion catalyst to be higher than the operating temperature of the combustion catalyst of the second exhaust gas treatment device 63, each exhaust gas treatment device can purify the exhaust gas more efficiently.

  Here, since the operating temperature of the combustion catalyst is shown in a specific temperature range, a part of the operating temperature may be overlapped. For example, the minimum operating temperature (starting temperature) or the maximum operating temperature (heat-resistant temperature) And the like, it is only necessary that the combustion catalyst of the exhaust gas treatment device 62 has a minimum operable temperature or a maximum temperature higher than that of the combustion catalyst of the second exhaust gas treatment device 63. .

  FIG. 8 is a cross-sectional view schematically showing another embodiment of a module in which two cell stacks 45 are housed in the power generation chamber 71.

  In the module 65 shown in FIG. 8, the exhaust gas treatment device 66 is disposed in contact with the surface of the reformer 46 on the cell stack 4 side (the bottom surface of the reformer 7), and both sides of each cell stack 45. The exhaust gas inner wall 54 and the oxygen-containing gas introduction member 58 are in contact with each other. In other words, the exhaust gas treatment device 66 is disposed so as to partition the reformer 46 and the cell stack 45 vertically.

  As a result, the exhaust gas generated due to the power generation of the fuel cell 43 and the combustion of surplus fuel gas is processed in the exhaust gas processor 66 and then flows into the exhaust gas flow channel 56. The exhaust gas can be purified efficiently, and the amount of heat transferred to the reformer 46 can be increased. Therefore, the reforming efficiency in the reformer 46 can be improved, and the power generation efficiency of the fuel cell 43 can be improved.

  When the heat insulating material 60 disposed in contact with the exhaust gas inner wall 54 extends to the upper end of the exhaust gas inner wall 54, one end of the exhaust gas treatment device 66 on the exhaust gas inner wall 56 side is the heat insulating material. 60 (in other words, connected to the exhaust gas inner wall 56 via the heat insulating material 60).

  FIG. 9 is a cross-sectional view schematically showing another embodiment of a module in which two cell stacks 45 are housed in the power generation chamber 71.

In the module 67 shown in FIG. 9, exhaust gas treatment devices 68 are disposed on both side surfaces along the arrangement direction of the fuel cells 43 of the reformer 46, and inner walls for exhaust gas located on both sides of the cell stack 45. 54 and the oxygen-containing gas introduction member 58 are in contact with each other. In other words, the exhaust gas treatment device 66 is disposed so as to partition the reformer 46 and the cell stack 45 vertically.

  When the heat insulating material 60 arranged in contact with the exhaust gas inner wall 54 extends to the upper end of the exhaust gas inner wall 54, one end of the exhaust gas treatment device 68 on the exhaust gas inner wall 56 side is the heat insulating material. It can also be disposed in contact with 60 (in other words, connected to the exhaust gas inner wall 56 via the heat insulating material 60).

  Also in such a module 67, the exhaust gas generated by the power generation of the fuel battery cell 43 and the combustion of surplus fuel gas flows into the exhaust gas flow channel 56 after being processed by the exhaust gas processor 68. The exhaust gas can be efficiently purified by the processor 68 and the amount of heat transferred to the reformer 46 can be increased. Therefore, the reforming efficiency in the reformer 46 can be improved, and the power generation efficiency of the fuel cell 43 can be improved.

  The exhaust gas treatment device 68 is separately provided on both side surfaces along the arrangement direction of the fuel cells 43 of the reformer 46, and one side surface of the reformer 46 is arranged along the arrangement direction of the fuel cells 43. Then, the other side surface of the reformer 46 may be turned into one exhaust gas treatment device 68 extending in the arrangement direction of the fuel cells 43.

  FIG. 10 is a cross-sectional view schematically showing another embodiment of a module in which two cell stacks 45 are housed in the power generation chamber 71.

  In the module 69 shown in FIG. 10, the exhaust gas treatment device is disposed in contact with the surface of the reformer 46 on the cell stack 45 side (the bottom surface of the reformer 46) and is located on both sides of the cell stack 45. The exhaust gas treatment device 66 in contact with the exhaust gas inner wall 54 and the oxygen-containing gas introduction member 58 and the both sides of the reformer 46 along the arrangement direction of the fuel battery cells 43, and both sides of the cell stack 45 The exhaust gas inner wall 54 and the exhaust gas treatment device 68 in contact with the oxygen-containing gas introduction member 58 are provided.

  When the heat insulating material 60 arranged in contact with the exhaust gas inner wall 54 extends to the upper end of the exhaust gas inner wall 54, the exhaust gas treatment unit 66 and the exhaust gas treatment unit 68 on the exhaust gas inner wall 56 side are arranged. Can be disposed in contact with the heat insulating material 60 (in other words, connected to the exhaust gas inner wall 56 via the heat insulating material 60).

  In such a module 69, the exhaust gas generated by the power generation of the fuel battery cell 43 and the combustion of surplus fuel gas is first processed by the exhaust gas processing device 66, and the exhaust gas not processed by the exhaust gas processing device 66 is processed. Then, it is processed by the exhaust gas processing device 68.

  Therefore, the exhaust gas can be purified efficiently and the amount of heat transferred to the reformer 46 can be increased. Therefore, the reforming efficiency in the reformer 46 can be improved, and the power generation efficiency of the fuel cell 43 can be improved.

  In the module 69 shown in FIG. 10, the exhaust gas treatment device 66 and the exhaust gas treatment device 68 can be formed as an integral unit, and the exhaust gas treatment device can be disposed on the upper side of the reformer 46.

Further, the exhaust gas processing device 66 and the exhaust gas processing device 68 are arranged in the direction in which the fuel cell 43 of the reformer 46 is arranged in order to more efficiently process the exhaust gas generated by the power generation of the fuel cell 43 and the combustion of surplus fuel gas. Can have a length equal to or greater than As a result, most of the exhaust gas generated by the power generation of the fuel cell 43 and combustion of surplus fuel gas flows into the exhaust gas flow channel 56 after being processed by the exhaust gas processing device 66 and the exhaust gas processing device 68. The exhaust gas can be purified efficiently and the amount of heat transferred to the reformer 46 can be increased. Therefore, the reforming efficiency in the reformer 46 can be improved, and the power generation efficiency of the fuel cell 43 can be improved.

  FIG. 11 is an exploded perspective view showing an embodiment of the fuel cell device 80 of the present invention. In FIG. 11, a part of the configuration is omitted.

  A fuel cell device 80 shown in FIG. 11 divides the inside of an outer case made up of a column 81 and an outer plate 82 by a partition plate 83 and forms a module storage chamber 84 for storing the above-described module 1 on the upper side. The lower side is configured as an auxiliary equipment storage chamber 85 for storing auxiliary equipment for operating the module 1. It should be noted that auxiliary equipment stored in the auxiliary equipment storage chamber 85 is omitted.

  In addition, the partition plate 84 is provided with an air circulation port 86 for allowing the air in the auxiliary machine storage chamber 85 to flow toward the module storage chamber 84, and a module is formed in a part of the exterior plate 82 constituting the module storage chamber 84. An exhaust port 87 for exhausting the air in the storage chamber 84 is provided.

  In such a fuel cell device 80, as described above, the module 1 with improved power generation efficiency is housed in the module storage chamber 84, thereby forming the fuel cell device 80 with improved power generation efficiency. Can do.

  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 module 41 shown in FIG. 7, the example in which the two cell stacks 45 are arranged in the storage container 42 is shown, but a module in which three or more cell stacks are stored in the storage container may be used. it can.

  In this case, oxygen-containing gas introduction members 58 are disposed between adjacent cell stacks, and the exhaust gas treatment devices 66 and the exhaust gas treatment devices 68 are disposed on both sides of each cell stack. It can arrange | position so that it may mutually contact. In the cell stack located on the outermost side, the outer side becomes the exhaust gas inner wall 54. Therefore, the exhaust gas treatment device 66 and the exhaust gas treatment device 68 are arranged so as to contact the exhaust gas inner wall 54 and the oxygen-containing gas introduction member 58. can do.

1, 33, 35, 37, 41, 65, 67, 69: Fuel cell module 2, 42: Storage container 3, 43: Fuel cell 4, 45: Cell stack 7, 46: Reformers 31, 34, 36 62, 66, 68: Exhaust gas treatment device 38, 71: Power generation chamber 58: Oxygen-containing gas introduction member 80: Fuel cell device

Claims (8)

In the power generation chamber provided in the storage container, a plurality of fuel cells configured to generate power with oxygen-containing gas and fuel gas and to burn excess fuel gas not used for power generation on one end side are arranged. Te and one of the cell stack formed by electrically connected, are placed separately from the one end of the cell stack, the raw fuel reforming for producing a fuel gas supplied to the fuel cell a reformer, which is disposed in contact with the reformer, Ri Na accommodates the exhaust gas treatment unit comprising a combustion catalyst for purifying exhaust gas, on the outside of the cell stack, the array of fuel cells An inner wall is disposed along the direction, the exhaust gas treatment device is disposed on a surface of the reformer on the cell stack side, and the cell stack is disposed along the arrangement direction of the fuel cells. On both sides Fuel cell module, characterized in that in contact with the inner wall of, respectively. In the power generation chamber provided in the storage container, a plurality of fuel cells configured to generate power with oxygen-containing gas and fuel gas and to burn excess fuel gas not used for power generation on one end side are arranged. One of the cell stacks that are electrically connected to each other and a modification for generating a fuel gas that is disposed apart from one end side of the cell stack and reforms the raw fuel to be supplied to the fuel cell. And an exhaust gas treatment device provided with a combustion catalyst for purifying exhaust gas, which is disposed in contact with the reformer, outside the cell stack, in the arrangement direction of the fuel cells. And the exhaust gas treatment device is disposed on both side surfaces of the reformer along the arrangement direction of the fuel cells, and along the arrangement direction of the fuel cells. Of the cell stack Fuel cell module that is characterized in that in contact with each of the inner wall disposed on the side. In the power generation chamber provided in the storage container, a plurality of fuel cells configured to generate power with oxygen-containing gas and fuel gas and to burn excess fuel gas not used for power generation on one end side are arranged. One of the cell stacks that are electrically connected to each other and a modification for generating a fuel gas that is disposed apart from one end side of the cell stack and reforms the raw fuel to be supplied to the fuel cell. And an exhaust gas treatment device provided with a combustion catalyst for purifying exhaust gas, which is disposed in contact with the reformer, outside the cell stack, in the arrangement direction of the fuel cells. Along the inner wall, and the exhaust gas treatment device is disposed on the cell stack side surface of the reformer and on both side surfaces of the reformer along the arrangement direction of the fuel cells. And the fuel cell Fuel cell module that is characterized in that in the arrangement direction of the Le in contact with each of the inner wall located on opposite sides of the cell stack. In the power generation chamber provided in the storage container, a plurality of fuel cells configured to generate power with oxygen-containing gas and fuel gas and to burn excess fuel gas not used for power generation on one end side are arranged. A plurality of cell stacks electrically connected to each other, and a modification for generating a fuel gas disposed at a distance from one end of the cell stack and reforming the raw fuel to be supplied to the fuel cell. A fuel cell, which is disposed in contact with the reformer and includes an exhaust gas treatment device including a combustion catalyst for purifying exhaust gas, and is disposed outside the cell stack located on the outermost side. An inner wall is disposed along the cell arrangement direction, and an oxygen-containing gas for supplying an oxygen-containing gas to the fuel cell by hanging from above the power generation chamber between the adjacent cell stacks Supply member The exhaust gas treatment device is disposed on the surface of the reformer on the cell stack side, and is in contact with the oxygen-containing gas supply member or the inner wall located on both sides of the cell stack. fuel cell module that characterized in that. In the power generation chamber provided in the storage container, a plurality of fuel cells configured to generate power with oxygen-containing gas and fuel gas and to burn excess fuel gas not used for power generation on one end side are arranged. A plurality of cell stacks electrically connected to each other, and a modification for generating a fuel gas disposed at a distance from one end of the cell stack and reforming the raw fuel to be supplied to the fuel cell. A fuel cell, which is disposed in contact with the reformer and includes an exhaust gas treatment device including a combustion catalyst for purifying exhaust gas, and is disposed outside the cell stack located on the outermost side. An inner wall is disposed along the cell arrangement direction, and an oxygen-containing gas for supplying an oxygen-containing gas to the fuel cell by hanging from above the power generation chamber between the adjacent cell stacks Supply member The oxygen-containing gas supply member disposed on both sides of the cell stack, and the exhaust gas treatment device is disposed on both side surfaces of the reformer along the arrangement direction of the fuel cells. fuel cell module that is characterized in that in contact with the inner wall. In the power generation chamber provided in the storage container, a plurality of fuel cells configured to generate power with oxygen-containing gas and fuel gas and to burn excess fuel gas not used for power generation on one end side are arranged. A plurality of cell stacks electrically connected to each other, and a modification for generating a fuel gas disposed at a distance from one end of the cell stack and reforming the raw fuel to be supplied to the fuel cell. A fuel cell, which is disposed in contact with the reformer and includes an exhaust gas treatment device including a combustion catalyst for purifying exhaust gas, and is disposed outside the cell stack located on the outermost side. An inner wall is disposed along the cell arrangement direction, and an oxygen-containing gas for supplying an oxygen-containing gas to the fuel cell by hanging from above the power generation chamber between the adjacent cell stacks Supply member The exhaust gas treatment device is disposed on the surface of the reformer on the cell stack side and on both side surfaces of the reformer along the arrangement direction of the fuel cells, and fuel cell module that is characterized in that in contact with the oxygen-containing gas supply member or the inner wall located on either side of the cell stack. The fuel cell according to any one of claims 1 to 6 , wherein the exhaust gas treatment device has a length equal to or longer than a length of the reformer along the arrangement direction of the fuel cells. module. A fuel cell device comprising: a fuel cell module according to any one of claims 1 to 7 ; and an auxiliary machine for operating the fuel cell module in an outer case.

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