JP5317791B2 - Fuel cell power generation module - Google Patents

Description

  The present invention relates to a fuel cell power generation module including a plurality of fuel cells. More specifically, the present invention relates to a fuel cell power generation module using a fuel cell having an electrolyte, an anode (fuel electrode), and a cathode (air electrode). The present invention relates to a technique for mixing the surplus fuel that has passed through the anode and the surplus air that has passed through the cathode without causing the electrochemical reaction (battery reaction) to be stably and uniformly burned.

  The fuel cell includes an anode (fuel electrode) on one side with an electrolyte in between, and a cathode (air electrode) on the other side. Then, fuel is generated on the anode surface by flowing fuel on the cathode surface and air on the cathode surface, and this fuel and air undergo an electrochemical reaction (cell reaction) via the electrolyte. Although the voltage obtained by one fuel cell is about 1V, it is possible to obtain a high voltage by electrically connecting a plurality of fuel cells. In an actual power generation system, a power generation module including a plurality of fuel cells is formed.

  In a fuel cell power generation module, a plurality of fuel cells are stored in a space called a power generation chamber. The fuel and air supplied to the fuel cell in the power generation chamber are consumed by an electrochemical reaction, but a part of the fuel and air is discharged from the power generation chamber without being consumed. A solid oxide fuel cell, which is one type of fuel cell, is operated at a high temperature of 700 to 1000 ° C. In such a fuel cell operating at a high temperature, stress is generated due to thermal expansion at the time of temperature rise in the gas seal portion around the fuel cell, which may cause damage to the fuel cell.

  Therefore, the outlet of the power generation chamber is not gas-sealed but is provided with a fuel flow path and an air flow path, and fuel and air are introduced from the power generation chamber into another space called a combustion chamber. In the high-temperature fuel and air introduced and mixed from the power generation chamber to the combustion chamber, unreacted components that have not been consumed spontaneously ignite and burn. The combustion heat generated in the combustion chamber is used for maintaining the temperature of the fuel cell, preheating the fuel and air, reforming the fuel, generating steam and hot water, and the like.

  The vicinity of the fuel introduction part to the combustion chamber has a larger amount of combustion than the vicinity of the air introduction part, and tends to be locally hot. Then, the generated local high temperature portion causes damage to the fuel cell, damage to the combustion chamber constituent member, and measurement line abnormality.

  Further, due to the non-uniform distribution of the flow rate of the fuel and air in the cross section including the fuel introduction part and the air introduction part of the combustion chamber, non-uniform combustion occurs and a temperature distribution occurs in the combustion chamber. The temperature distribution in the combustion chamber also generates a temperature distribution in the adjacent power generation chambers, causing a decrease in the power generation performance of the fuel cell.

  Furthermore, the fuel and air introduced into the combustion chamber are not sufficiently mixed, and the lean fuel burns in the combustion chamber, so that the combustion state is likely to change over time and the temperature of the combustion chamber becomes unstable. It has become.

  As a method for avoiding the generation of a local high temperature portion in the vicinity of the fuel cell, a technique described in Patent Document 1 is known. This is such that combustion in the combustion chamber occurs only at the outer periphery of the combustion chamber.

JP 2003-77496 A

  In the technique described in Patent Document 1, since combustion occurs only at the outer peripheral portion of the power generation module, a local high temperature portion is generated in the outer peripheral portion of the combustion chamber, and a temperature distribution is likely to occur in the combustion chamber. Furthermore, since the mixing of fuel and air is insufficient, the combustion state tends to become unstable.

  An object of the present invention is to provide a fuel cell power generation module that can promote uniform and stable combustion over time in the entire combustion chamber and obtain a uniform and stable temperature distribution of the combustion chamber.

  The fuel cell power generation module according to the present invention basically has the following configuration.

  A plurality of fuel cells, each having an anode disposed on one surface of an electrolyte layer of each fuel cell and a cathode disposed on the other surface, and generating electricity using fuel supplied to the anode and air supplied to the cathode; A fuel cell power generation module comprising: a combustion chamber in which the surplus fuel that has passed through each anode and the surplus air that has passed through the cathode join together to cause a combustion reaction without being used for a power generation reaction in the plurality of fuel cells The fuel / air promotes a combustion reaction by promoting mixing of the surplus fuel and the surplus air at least one of the inside of the combustion chamber, the inlet side of the combustion chamber, and the outlet side of the combustion chamber A mixing promoting means is provided.

  The fuel / air mixing promoting means is distributed and arranged along the plane of the plurality of fuel cells in at least one of the inside of the combustion chamber, the inlet side of the combustion chamber, and the outlet side of the combustion chamber. And a plurality of throttle channels.

  The fuel / air mixing promoting means may be a plate-like member in which a plurality of holes are uniformly distributed along the surface in the arrangement direction of the plurality of fuel cells.

  The fuel / air mixing promoting means protrudes toward the inside of the flow path into at least one of the flow path through which the surplus fuel flows into the combustion chamber and the flow path through which the surplus air flows. And a protruding member that generates turbulent flow in at least one of the surplus fuel and surplus air that flows into the combustion chamber.

  According to the present invention, since mixing of fuel and air is promoted by the fuel / air mixing promoting means, a local high temperature portion is not generated in the combustion chamber of the fuel cell power generation module. In addition, since the fuel / air mixing promoting means is installed in the entire horizontal section of the combustion chamber, the fuel and air are more evenly distributed in the combustion chamber, and the combustion amount becomes uniform. The temperature distribution becomes uniform.

  In addition to this uniform combustion effect, the fuel / air mixing promotion means makes it difficult for the fuel / air mixing state to change over time, so that the combustion of fuel and air is stable and the combustion chamber is stable over time. There is also an effect that a temperature distribution is obtained.

1 is a vertical sectional view of a fuel cell power generation module according to Embodiment 1 of the present invention. 1 is a horizontal sectional view of a fuel cell power generation module according to Embodiment 1 of the present invention. It is a vertical sectional view of a fuel cell power generation module according to Example 2 of the present invention. It is a vertical sectional view of a fuel cell power generation module according to Embodiment 3 of the present invention. It is a vertical sectional view of a fuel cell power generation module according to Example 4 of the present invention. It is a vertical sectional view of a fuel cell power generation module according to Embodiment 5 of the present invention. It is a vertical sectional view of a fuel cell power generation module according to Example 6 of the present invention. It is a top view of the dispersion plate of the fuel cell power generation module according to Embodiment 1 of the present invention.

  The fuel cell power generation module according to the present invention is particularly suitable for a power generation system including a solid oxide fuel cell. Solid oxide fuel cells are roughly classified into a cylindrical shape and a flat plate shape according to the shape of the solid electrolyte, but the present invention can be applied to either shape. Hereinafter, a fuel cell having a cylindrical shape, particularly a cylindrical vertical stripe type, will be described in detail.

  FIG. 1 shows a vertical sectional view of a fuel cell power generation module according to the present invention, and FIG. 2 shows a horizontal sectional view of a combustion chamber of the fuel cell power generation module. The fuel cell power generation module includes a solid oxide fuel cell 1 having a cylindrical shape (bag tube shape). In this embodiment and the following embodiments, the fuel cell 1 has a cathode on the inner surface and an anode on the outer surface. However, the present invention can also be applied to a fuel cell in which the positions of the cathode and anode are reversed. is there. In the case of a fuel cell in which the positions of the cathode and the anode are reversed, the fuel and air may be used interchangeably in the present embodiment and the following embodiments.

  A plurality of fuel cells 1 are housed in a power generation chamber inside the power generation chamber container 2, and the power generation chamber container 2 also serves to seal the fuel flowing outside the fuel cell 1 in the power generation chamber. The power generation chamber container 2 is provided with an electrical insulating material 16 on the side wall and a rectifying plate 17 on the bottom. The fuel cells 1 are electrically connected to each other by a current collector 3, and current is taken out from a current collecting terminal 4 at the final end. The current collecting terminal 4 is sealed with an insulating sealing material 18 at the outlet of the power generation module.

  A partition plate 7 is provided in the upper part of the fuel cell 1 and divides the lower power generation chamber and the upper combustion chamber 8 into separate spaces. As the partition plate 7, a porous body or a porous plate is used.

  Further, the voltmeter side line 5 and the thermocouple 6 for measuring the voltage and temperature of the fuel cell 1 are taken out from a measurement line port 15 provided in the combustion chamber 8 through the partition plate 7. A heat insulating material 14 is installed on the outer surface of the power generation module to reduce heat dissipation.

  The outer space of the fuel cell 1 is used as a fuel flow path. The fuel is supplied from below the fuel cell 1 and reacts at the anode on the outer surface of the fuel cell 1. Unreacted fuel, that is, surplus fuel that has passed through the anode without being used in the power generation reaction passes through the upper partition plate 7 and is introduced into the combustion chamber 8.

  The inner space of the fuel cell 1 is used as an air flow path. Air is introduced from the air header 9 above the fuel cell 1 through the air introduction pipe 10 to the bottom of the fuel cell 1, where it is reversed and flows upward to react at the cathode on the inner surface of the fuel cell 1. Excess air that has passed through the cathode without being used in the power generation reaction is introduced into the combustion chamber 8 from the opening 11 at the upper end of the fuel cell 1. The air is preheated and introduced into the power generation module in order to promote the reaction in the fuel cell 1.

  A dispersion plate 12 is installed in the combustion chamber 8 above the partition plate 7. The dispersion plate 12 includes a plurality of holes and divides the combustion chamber 8 into two upper and lower spaces. The dispersion plate 12 having a plurality of holes serves as a fuel / air fuel / air mixing promoting means.

  Hereinafter, surplus fuel and air that have not been used for the power generation reaction introduced into the combustion chamber 8 are simply referred to as fuel or air.

  Here, the dispersion plate 12 will be described with reference to FIG. FIG. 8 is a top view of the dispersion plate 12. The holes 13 provided in the dispersion plate 12 are uniformly dispersed throughout the dispersion plate 12 and serve as throttle passages for fuel and air. The air introduction pipe 10 passes through the hole 13 and reaches from the air header 9 to the bottom of the fuel cell 1. It is desirable that the air introduction tube 10 and the hole 13 are arranged so that their central axes coincide. The gap between the dispersion plate 12 and the air introduction pipe 10 is not gas-sealed and has a gap that serves as a throttle channel for fuel and air.

  The dispersion plate 12 is made of heat-resistant metal or ceramic. The base material of the dispersion plate 12 does not necessarily need to be a dense body, and may be any material that has a high flow resistance to the extent that most of the gas passes through the holes 13. The size of the hole 13 is determined in consideration of the flow rate and flow rate of the flowing fuel and air. If the holes 13 are too large, the fuel and air distribution is uneven. If the holes 13 are too small, pressure loss occurs. A gas seal is provided between the outer peripheral portion of the dispersion plate 12 and the outer wall of the combustion chamber 8.

  Returning to FIG. 1, the description of the fuel cell power generation module will be continued.

  The fuel and air that have been introduced into the combustion chamber 8 and merged flow through the holes 13 of the dispersion plate 12 into the space above the dispersion plate 12. Since the temperature of the combustion chamber 8 is higher than the spontaneous ignition temperature of the fuel, the fuel and air mixed in the combustion chamber 8 undergo a combustion reaction and are discharged from the combustion chamber 8.

  The fuel and air are sufficiently mixed and flow into the combustion chamber 8 by passing through a hole 13 that is sufficiently narrow as compared with the space of the combustion chamber 8. Generation of a local high temperature portion in the combustion chamber 8 due to the high concentration is suppressed. In addition, since a large number of holes 13 are uniformly dispersed throughout the dispersion plate 12, fuel and air are finely distributed in the space below the dispersion plate 12 so as to pass through the holes 13. Therefore, even when there is a flow distribution of fuel or air at the time of introduction into the combustion chamber 8, the flow is distributed so as to be uniform when passing through the holes 13 of the dispersion plate 12, and the combustion amount is also the combustion chamber 8. It becomes uniform throughout.

  Furthermore, since the combustion gas of fuel and air passes through the vicinity of the air introduction pipe 10 through the hole 13, heat exchange between the combustion gas and the air in the air introduction pipe 10 is promoted. For this reason, the preheating when introducing air into the power generation module can be reduced.

  Further, since the mixed gas of fuel and air is ejected from the sufficiently narrow hole 13 to the wide combustion chamber 8, the flow velocity becomes sufficiently high and combustion occurs. For this reason, a stable flame is formed, and a stable combustion state is obtained over time.

  In addition, by installing the measurement line port 15 below the dispersion plate 12, the possibility that the voltmeter side line 5 and the thermocouple 6 are exposed to the combustion gas of fuel and air is reduced, measurement errors and damage to the measurement line There is also an effect that can be reduced.

  In the present embodiment, a gap through which gas flows is provided between the dispersion plate 12 and the air introduction pipe 10 in all the holes 13 of the dispersion plate 12. However, as long as fuel and air can be uniformly dispersed in the combustion chamber 8, it is not necessary to provide a gap serving as a gas flow path between the dispersion plate 12 and the air introduction pipe 10 in all the holes 13. .

  FIG. 3 shows a fuel cell power generation module according to Example 2 of the present invention. The second embodiment is a modification of the first embodiment. FIG. 3 is a vertical sectional view of the fuel cell power generation module of this embodiment. 3, the same reference numerals as those in the first embodiment (FIG. 1) denote the same or corresponding elements as those in the first embodiment.

  In the fuel cell power generation module of this embodiment, an opening nozzle 21 is installed in the opening 11 of the fuel cell 1. The opening nozzle 21 is for guiding the air flowing in the inner space of the fuel cell 1 to the vicinity of the hole 13 of the dispersion plate 12 so as not to be mixed with the fuel. The opening nozzle 21 has a lower end that is in close contact with the outer surface of the opening 11 so that air does not leak out, and is installed so that the tip (upper end) reaches the vicinity of the hole 13. Therefore, the fuel and air are mixed in the vicinity of the hole 13. The diameter of the tip of the opening nozzle 21 is smaller than the inner diameter of the hole 13 and smaller than the inner diameter of the opening 11. That is, the opening nozzle 21 has a shape that becomes narrower from the fuel cell 1 toward the dispersion plate 12, as shown in FIG. The opening nozzle 21 is made of heat-resistant metal or ceramic.

  The opening nozzle 21 prevents the fuel and air from being mixed in the vicinity of the hole 13 and mixed below the dispersion plate 12, so that the fuel cell 1 is damaged by a combustion reaction occurring in the vicinity of the opening 11. Can be suppressed. In addition, since the opening nozzle 21 has a shape that narrows toward the dispersion plate 12, the flow velocity of the air flowing through the opening nozzle 21 is increased, and the fuel and air are mixed from the opening 11. Since the distance to the place is long, the fuel cell 1 can be prevented from being damaged due to the fuel flowing backward and entering the inside of the fuel cell 1.

  In the present embodiment, the fuel cell 1 can be prevented from being damaged as described above, and therefore, the power generation state of the fuel cell 1 can be prevented from being uneven. In this way, the temperature distribution and combustion state of the combustion chamber 8 become more uniform and stable.

  A fuel cell power generation module according to Embodiment 3 of the present invention is shown in FIG. The third embodiment is a modification of the first embodiment. FIG. 4 is a vertical sectional view of the fuel cell power generation module of this embodiment. 4, the same reference numerals as those in the first embodiment (FIG. 1) denote the same or corresponding elements as those in the first embodiment.

  In the fuel cell power generation module of the present embodiment, the combustion catalyst 31 is applied to the surface of the portion of the air introduction pipe 10 in the space above the dispersion plate 12 in the combustion chamber 8. By applying the combustion catalyst 31 to the air introduction pipe 10, the combustion reaction between air and fuel is promoted, and combustion can be further stabilized. Moreover, the heat exchange between the combustion gas and the air in the air introduction pipe 10 can be further enhanced, and there is an effect that the preheating of the air when introduced into the power generation module can be reduced.

  A fuel cell power generation module according to Example 4 of the present invention is shown in FIG. The fourth embodiment is a modification of the first embodiment. FIG. 5 is a vertical sectional view of the fuel cell power generation module of this embodiment. 5, the same reference numerals as those in the first embodiment (FIG. 1) denote the same or corresponding elements as those in the first embodiment.

  In the fuel cell power generation module of this example, a surface combustion burner material 41 made of a porous material was installed between the dispersion plate 12 and the air introduction tube 10 so as to fill the holes 13 of the dispersion plate 12 of Example 1. Is. As the surface combustion burner material 41, a heat resistant metal porous body or ceramic porous body whose flow resistance is sufficiently lower than that of the base material of the dispersion plate 12 is used.

  When the surface combustion burner material 41 is installed as in the present embodiment, air and fuel are mixed and flow through the surface combustion burner material 41 and into the space above the combustion chamber 8. At this time, in the surface combustion burner material 41, surface combustion occurs on the upper surface of the dispersion plate 12.

  The surface combustion flame moves toward the lower side of the dispersion plate 12 having a high fuel concentration, but is swept upward by the mixed gas of air and fuel. When the flow velocity of the mixed gas of air and fuel is smaller than the combustion speed in the gas phase, the flame moves from the surface of the surface combustion burner material 41 (above the dispersion plate 12) to the inside, but the heat capacity of the surface combustion burner material 41 As a result, the flame temperature is lowered and the combustion speed is lowered. When the combustion speed becomes equal to or lower than the flow rate of the mixed gas of air and fuel, the flame does not advance further into the surface combustion burner material 41 and is stably held in that place.

  In this way, a stable flame is formed by the surface combustion burner material 41, and the combustion state is further stabilized.

  FIG. 6 shows a fuel cell power generation module according to Example 5 of the present invention. FIG. 6 is a vertical sectional view of the fuel cell power generation module of this embodiment. In FIG. 6, the same reference numerals as those in the first embodiment (FIG. 1) denote the same or corresponding elements as those in the first embodiment.

  In the fuel cell power generation module of this embodiment, a partition plate 70 provided with a partition plate hole 51 is used as a partition plate so that a gap is formed between the fuel cell 1 and the fuel cell power generation module. The partition plate 70 is arranged so that the upper end position is above the opening 11 of the fuel cell 1, and a gap is formed between the partition plate 70 and the air introduction pipe 10 at this position. The partition hole 51 is a fuel flow path. The fuel flows in the very vicinity of the fuel cell 1 by passing through the partition plate hole 51 and is discharged to the combustion chamber 8.

  Although heat resistant metal or ceramic is used for the partition plate 70, the base material does not necessarily have to be a dense body, and the flow resistance is high enough to pass most of the fuel through the partition plate hole 51. That's fine. Similar to the size of the hole 13 described in the first embodiment, the size of the partition plate hole 51 is determined in consideration of the flow rate and flow velocity of the flowing fuel.

  Further, in the fuel cell power generation module of the present embodiment, turbulent flow elements 52 are provided on the inner side of the partition plate hole 51 and the outer surface of the air introduction pipe 10 in the vicinity of the opening 11 of the fuel cell 1. The turbulent flow element 52 serves as a fuel / air fuel / air mixing promoting means. As for the turbulent flow element 52, those provided inside the partition hole 51 are directed toward the air introduction tube 10, and those provided on the outer surface of the air introduction tube 10 are directed toward the partition plate 70. It is a member provided so that each may protrude. In other words, the turbulent flow element 52 is a member that is provided in a flow path of fuel and air that flows toward the opening 11 and protrudes toward the inside of the flow path to narrow the width of the flow path. In this way, the fuel and air flow path provided with the turbulent flow element 52 becomes a throttle flow path. The turbulent flow element 52 may be provided so as to continuously make a round of the inner side of the partition plate hole 51 and the outer surface of the air introduction tube 10 or may be provided so as to make a round of intermittent. A material similar to that of the partition plate 70 can be used for the turbulent flow element 52.

  The fuel is uniformly distributed by the partition plate 70 provided with the partition plate hole 51, and flows from the power generation chamber through the partition plate hole 51 to the vicinity of the opening 11. The direction of the flow of the fuel that has reached the vicinity of the opening 11 and the air that flows out of the opening 11 is changed by the turbulence element 52 above the opening 11, and is a wide space from the flow path narrowed by the turbulence element 52. By flowing out into the combustion chamber 8, the state of the flow is greatly changed, turbulence is generated, and further mixing is promoted. As a result, in the combustion chamber 8, the amount of combustion is made uniform and the temperature distribution is made uniform, so that a local high temperature portion cannot be formed, and a stable combustion reaction occurs over time.

  The shape of the turbulent flow element 52 is triangular in FIG. 6, but is not limited thereto. The shape and size of the turbulent flow element 52 are determined so that the flow state of the fuel and air can be changed in consideration of the flow rate and flow velocity of the flowing fuel and air. In the present embodiment, the turbulent flow element 52 is provided on both the inner side of the partition plate hole 51 and the outer surface of the air introduction tube 10, but may be provided on only one of them.

  As in the second embodiment, an opening nozzle 21 may be installed in the opening 11 of the fuel cell 1 to prevent the fuel from flowing backward into the fuel cell 1 or burning in the vicinity of the fuel cell 1. In this case, the tip of the opening nozzle 21 is installed so as to reach the vicinity below the turbulent flow element 52 so that the flow state of the air flowing out from the opening nozzle 21 can be changed.

  FIG. 7 shows a fuel cell power generation module according to Example 6 of the present invention. The sixth embodiment is a modification of the first embodiment. FIG. 7 is a vertical sectional view of the fuel cell power generation module of this embodiment. 7, the same reference numerals as those in the first embodiment (FIG. 1) denote the same or corresponding elements as those in the first embodiment.

  In the fuel cell power generation module of the present embodiment, a plurality of holes are formed in the partition plate 7, and a fuel exhaust nozzle 61 is installed so as to penetrate the holes. The fuel exhaust nozzle 61 serves as a fuel flow path, and a large number of fuel exhaust nozzles 61 are distributed and installed throughout the partition plate 7 so that the fuel is evenly distributed and flows to each fuel cell 1. Further, the upper end of the fuel exhaust nozzle 61 is installed so as to reach the lower vicinity of the dispersion plate 12. The fuel flows from the power generation chamber to the combustion chamber 8 through the fuel exhaust nozzle 61. The fuel exhaust nozzle 61 serves as a fuel throttle channel.

  The dispersion plate 12 has a plurality of holes 13 at positions corresponding to the fuel exhaust nozzle 61 when viewed from above the power generation module. That is, the upper end of each fuel exhaust nozzle 61 reaches the vicinity below the hole 13. A gas seal is provided between the dispersion plate 12 and the air introduction pipe 10 by a sealing material 62.

  The air that has exited the opening 11 of the fuel cell 1 flows toward the hole 13 above the fuel exhaust nozzle 61, is mixed with the fuel that has flowed out of the fuel exhaust nozzle 61 in the vicinity of the hole 13, and flows into the combustion chamber 8. To do. Since the fuel and air are sufficiently mixed in this manner, a local high temperature portion does not occur in the combustion chamber 8, and a change with time in the combustion state is also suppressed. Further, since the fuel is uniformly dispersed by the many fuel exhaust nozzles 61 and the air is uniformly dispersed by the dispersion plate 12, the temperature distribution in the combustion chamber 8 is made uniform.

  Furthermore, since the fuel passes through the fuel exhaust nozzle 61, there is no flow approaching the opening 11, and the fuel does not flow back to the opening 11. Therefore, fuel and air do not burn near the opening 11 and the fuel cell 1 is not damaged. As described above, also in this embodiment, the fuel cell 1 can be prevented from being damaged and the power generation state of the fuel cell 1 can be prevented from being uneven. Therefore, the temperature distribution and combustion state of the combustion chamber 8 become more uniform and stable. The effect which becomes can be acquired.

  In the above embodiment, the fuel / air mixing promoting means (throttle flow path) such as a dispersion plate or a turbulent flow element having a plurality of holes is provided in the combustion chamber or on the inlet side of the combustion chamber. It can also be provided on the outlet side of the combustion chamber. By providing the fuel / air mixing promoting means on the outlet side of the combustion chamber, the width of the flow path of the fuel and air can be narrowed, whereby the flow state of the fuel and air is greatly changed and mixing is promoted. .

  DESCRIPTION OF SYMBOLS 1 ... Fuel cell, 2 ... Power generation chamber container, 3 ... Current collector, 4 ... Current collector terminal, 5 ... Voltmeter side wire, 6 ... Thermocouple, 7, 70 ... Partition plate, 8 ... Combustion chamber, 9 ... Air header, DESCRIPTION OF SYMBOLS 10 ... Air introduction pipe, 11 ... Opening part, 12 ... Dispersion board, 13 ... Hole, 14 ... Heat insulation material, 15 ... Measurement line port, 16 ... Electrical insulation material, 17 ... Current plate, 18 ... Insulation sealing material, 21 ... Opening nozzle, 31 ... combustion catalyst, 41 ... surface combustion burner material, 51 ... partition plate hole, 52 ... turbulent flow element, 61 ... fuel exhaust nozzle, 62 ... sealing material.

Claims (9)

A plurality of fuel cells, each having an anode disposed on one surface of an electrolyte layer of each fuel cell and a cathode disposed on the other surface, and generating electricity using fuel supplied to the anode and air supplied to the cathode; ,
A combustion chamber in which the surplus fuel that has passed through the respective anodes and the surplus air that has passed through the cathodes are not used in the power generation reaction in the plurality of fuel cells and cause a combustion reaction;
Fuel / air mixing promotion that promotes the combustion reaction by promoting the mixing of the surplus fuel and the surplus air in at least one of the inside of the combustion chamber, the inlet side of the combustion chamber, and the outlet side of the combustion chamber A fuel cell power generation module comprising :
The fuel / air mixing promoting means protrudes toward the inside of the flow path into at least one of the flow path into which the surplus fuel flows into the combustion chamber and the flow path into which the surplus air flows. A fuel cell power generation module that is a protruding member that is provided and generates a turbulent flow in at least one of the surplus fuel and surplus air that flows into the combustion chamber. A plurality of fuel cells, each having an anode disposed on one surface of an electrolyte layer of each fuel cell and a cathode disposed on the other surface, and generating electricity using fuel supplied to the anode and air supplied to the cathode; ,
A combustion chamber in which the surplus fuel that has passed through the respective anodes and the surplus air that has passed through the cathodes are not used in the power generation reaction in the plurality of fuel cells and cause a combustion reaction ;
Internal pre Symbol combustion chamber, the inlet side of the combustion chamber, and wherein the at least one of the outlet side of the combustion chamber, the mixed fuel-air mixture that enhances combustion reaction to promote the surplus fuel and the surplus air A fuel cell power generation module comprising:
An introduction pipe for supplying fuel or air to the fuel cell is provided for each fuel cell, and the introduction pipe introduces fuel or air into the fuel cell through the inside of the combustion chamber. A fuel cell power generation module characterized in that a combustion catalyst is applied to the outer surface of the introduction pipe . The fuel cell power generation module according to claim 1 or 2 ,
The fuel / air mixing promoting means is distributed and arranged along the plane of the plurality of fuel cells in at least one of the inside of the combustion chamber, the inlet side of the combustion chamber, and the outlet side of the combustion chamber. A fuel cell power generation module comprising a plurality of throttle channels. The fuel cell power generation module according to claim 1 or 2 ,
The fuel / air mixing promoting means is a fuel cell power generation module which is a plate-like member in which a plurality of holes are uniformly distributed along the surface in the arrangement direction of the plurality of fuel cells. The fuel cell power generation module according to claim 1 ,
The fuel / air mixing promoting means is a plate-like member in which a plurality of holes are uniformly distributed along the surface in the arrangement direction of the plurality of fuel cells.
An introduction tube for supplying fuel or air to the fuel cell is provided for each fuel cell, and each of the introduction tubes penetrates each of the plurality of holes. The fuel cell power generation module according to claim 2 ,
The fuel / air mixing promoting means is a plate-like member in which a plurality of holes are uniformly distributed along the surface in the arrangement direction of the plurality of fuel cells.
Each pre-Symbol inlet tube, a fuel cell power generation module penetrating in each of the plurality of holes. The fuel cell power generation module according to any one of claims 1 to 6 , wherein the fuel cell has a cylindrical shape. 8. The fuel cell power generation module according to claim 7 , wherein the fuel cell has a cylindrical inner side as a cathode and an outer side as an anode. The fuel cell power generation module according to any one of claims 1 to 8 , wherein the fuel cell is a solid oxide fuel cell.

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