JP4868352B2 - Hydrogen generation facility and fuel cell system - Google Patents

Description

  The present invention relates to, for example, a hydrogen generation facility that decomposes a metal hydride to generate hydrogen and a fuel cell system that uses hydrogen generated in the hydrogen generation facility as fuel.

  Due to the recent increase in energy problems, there is a demand for a power source with higher energy density and clean emissions. A fuel cell is a generator having an energy density several times that of an existing cell, has high energy efficiency, and is characterized by no or little nitrogen oxides and sulfur oxides contained in exhaust gas. Therefore, it can be said that it is a very effective device that meets the demand as a next-generation power supply device.

  In a fuel cell that obtains an electromotive force by an electrochemical reaction between hydrogen and oxygen, hydrogen is required as a fuel. As an example of equipment for generating hydrogen gas, hydrogen is generated by hydrolysis or thermal decomposition using a metal oxide. Conventionally, it has been considered that hydrogen generation facilities efficiently generate hydrogen in a lean state (see, for example, Patent Document 1).

  That is, the conventional hydrogen generation facility has a configuration in which a plurality of reactors are connected in parallel and each reactor is connected to a water tank via a valve. And opening and closing of each valve is controlled independently, and the water pumped selectively is supplied to the reactor corresponding to the opened valve, and required hydrogen is obtained. Therefore, a desired amount of hydrogen can be secured by controlling the opening and closing of the valve, and stable hydrogen supply can be performed without waste.

  However, the conventional hydrogen generation facility has a large volume of auxiliary equipment and a large volume of the facility itself, and it is unrealistic to use it as a power supply device such as a mobile phone or a digital camera. Also, a pump is used to send water from the water tank to the reactor, but the pump is large in volume and consumes power. At present, it is at least 25 cc and 500 mW, and power consumption is large for mobile phones and digital cameras. Further, a pressure sensor is installed in the reactor, and a necessary amount of hydrogen is generated by controlling a pump and a valve based on the pressure detected by the pressure sensor. For this reason, complicated detection equipment and a control system are required, and electric power is required for control, and the output and volumetric energy density of the fuel cell are reduced.

JP 2002-154802 A

  The present invention has been made in view of the above situation, and an object of the present invention is to provide a hydrogen generation facility capable of stably supplying a reaction fluid and generating hydrogen without using a complicated mechanism or power. In particular, an object of the present invention is to provide a hydrogen generation facility capable of generating and maintaining hydrogen, particularly hydrogen at a pressure higher than atmospheric pressure, in a small facility that does not consume power.

  In addition, the present invention has been made in view of the above situation, and provides a fuel cell system including a hydrogen generation facility capable of stably supplying a reaction fluid and generating hydrogen without using a complicated mechanism or power. The purpose is to provide.

The first aspect of the present invention for achieving the above object is that a reaction vessel having a fluid chamber in which a reaction fluid is accommodated, a pressurizing means for pressurizing the fluid chamber, and a reaction fluid in the fluid chamber are sent. A reaction vessel containing a hydrogen generation reactant in which generation of hydrogen is promoted, a discharge means for discharging hydrogen generated in the reaction vessel, a fluid chamber of the reaction vessel and a reaction vessel, and a reaction fluid A fluid supply path that allows the flow of the fluid, and an opening / closing means that is provided in the fluid supply path and that opens the fluid flow path when the pressure of the reactant container falls below a predetermined value. The pressure of the fluid chamber is maintained higher than the pressure for opening the opening and closing means, and the pressurizing means is a movable wall that makes the volume of the fluid chamber variable, and a pressure that presses the movable wall to pressurize the pressure of the fluid chamber a means, pressing means is a movable wall in the magnet member pushed by magnetic force In hydrogen generating facility according to claim and.

In the first aspect, when the fluid chamber is pressurized by the pressurizing means and the internal pressure of the reactant container becomes equal to or lower than the predetermined pressure, the opening / closing means is opened and the reaction fluid is sent to the reactant container, and the hydrogen generating reactant The reaction fluid is supplied to generate hydrogen, and the generated hydrogen is discharged from the discharge means at a predetermined pressure. For this reason, hydrogen can be generated by stably supplying the reaction fluid according to the pressure state without using power.
Then, by moving the movable wall by the pressing means and changing the volume of the fluid chamber, it is possible to maintain the pressure state in which the fluid chamber is pressurized and the opening / closing means operates, and the magnetic force of the magnet member makes it extremely simple. The movable wall can be pressed.

A compression spring that urges the movable wall can be applied as the pressing means .

Thereby , the movable wall can be pressed with a very simple configuration by the biasing force of the compression spring.

Further, as a pressurizing means, a fluid passage of the reaction vessel and a reactant container are connected to allow a flow of hydrogen generated in the reactant vessel, and a hydrogen passage is provided only in the reactant vessel side provided in the pressurized passage. A check valve that allows flow and pressurizes the fluid chamber can be applied.

Thereby, the pressure state in which the opening / closing means operates can be maintained by pressurizing the fluid chamber with hydrogen flowing in via the check valve of the pressurizing flow path.

According to a second aspect of the present invention, in the hydrogen generation facility according to the first aspect , the opening / closing means reacts from the fluid chamber side at a constant pressure when the internal pressure of the reactant container is lower than the internal pressure of the fluid chamber. The hydrogen generating facility is a pressure regulating valve that opens the valve body in a state that allows the reaction fluid to flow to the container side.

In the second aspect , the reaction fluid can be sent to the reaction vessel at a predetermined pressure using a pressure regulating valve that opens the valve body by a predetermined pressure difference.

Then, it is possible to construct the anode compartment of a fuel cell having an anode chamber in which hydrogen is supplied, the fuel cell system by connecting the discharge means of the hydrogen generating facility described above.

Thereby, it can be set as the fuel cell system provided with the hydrogen generation equipment which can supply reaction fluid stably and can generate hydrogen, without using complicated mechanism and power.

In the fuel cell system described above, it is preferable that the anode chamber and the reactant container form a closed space .

Thereby, since produced | generated hydrogen does not flow out outside, all produced | generated hydrogen can be used.

  The hydrogen generation facility of the present invention can be a hydrogen generation facility that can stably supply a reaction fluid and generate hydrogen without using a complicated mechanism or power.

  In addition, the fuel cell system of the present invention can be a fuel cell system including a hydrogen generation facility capable of stably supplying a reaction fluid and generating hydrogen without using a complicated mechanism or power.

FIG. 1 shows a schematic configuration of a first hydrogen generation facility, FIG. 2 shows a schematic configuration of a hydrogen generation facility according to an embodiment of the present invention, and FIG. 3 shows a schematic configuration of a second hydrogen generation facility. is there.

The first hydrogen generation facility will be described with reference to FIG.

  The hydrogen generation facility 1 includes a reaction chamber 2 as a reactant container, and a work 3 (for example, sodium borohydride) as a hydrogen generation reactant is stored in the reaction chamber 2. A solution tank 5 as a reaction container is connected to the reaction chamber 2 via a liquid supply pipe 4 as a fluid supply path, and the liquid supply pipe 4 is connected to a liquid chamber 6 that is a fluid chamber of the solution tank 5. The liquid chamber 6 stores a reaction solution 7 (for example, malic acid aqueous solution) as a reaction fluid, and the liquid chamber 6 is partitioned by a movable wall 8.

  The movable wall 8 is biased toward the liquid chamber 6 by the compression spring 9, and the liquid chamber 6 is pressed against the movable wall 8 and pressurized. That is, a pressurizing means for pressurizing the liquid chamber 6 is configured by the movable wall 8 and the compression spring 9, and the movable wall 8 is constantly pressed by the compression spring 9, so that the reaction solution 7 flows through the liquid feeding pipe 4. Then, the reaction solution 7 can be extruded. When the reaction solution 7 is sent from the liquid feeding tube 4 to the reaction chamber 2, the reaction solution 7 and the workpiece 3 come into contact with each other to cause a hydrogen generation reaction. In addition, the code | symbol 10 in a figure is an air intake in order not to prevent the movement of the movable wall 8. FIG.

  The reaction chamber 2 is connected with a hydrogen conduit 11 as a discharge means, and the hydrogen conduit 11 is provided with a regulator 12 (pressure regulating valve). The amount of hydrogen discharged from the reaction chamber 2 is adjusted by the regulator 12. Although the hydrogen discharge amount can be controlled by the regulator 12, it is also possible to discharge hydrogen at a constant hydrogen pressure using a constant pressure valve.

  On the other hand, a pressure regulating valve 13 for regulating pressure is installed in the liquid feeding pipe 4, and the pressure regulating valve 13 is a valve that regulates the pressure when the reaction solution 7 is allowed to flow. The output pressure when the reaction solution 7 is allowed to flow is the pressure when the pressure regulating valve 13 is opened (valve opening pressure). The pressure regulating valve 13 is closed when the pressure in the reaction chamber 2 exceeds the valve opening pressure, and the pressure regulating valve 13 is opened when the pressure in the reaction chamber 2 falls below the valve opening pressure (below a predetermined value). .

  That is, the pressure regulating valve 13 is an opening / closing means that opens the flow path of the liquid feeding pipe 4 when the pressure in the reaction chamber 2 becomes a predetermined value or less. That is, the internal pressure of the liquid chamber 6 is maintained higher than the pressure at which the pressure regulating valve 13 is opened (pressure exceeding the predetermined pressure value of the reaction chamber 2 for opening the pressure regulating valve 13). Is configured such that the valve body is opened to allow the reaction solution 7 to flow from the liquid chamber 6 side to the reaction chamber 2 side when the internal pressure of the reaction chamber 2 becomes a predetermined value or less.

  The pressure adjustment valve 13 is, for example, a constant pressure valve, and includes a primary flow path that is a flow path on the liquid chamber 6 side of the solution tank 5, a secondary flow path that is a flow path on the reaction chamber 2 side, a primary flow path, It comprises a valve body provided between the secondary flow paths, an external pressure transmission path that transmits external pressure to the valve, and an internal pressure transmission path that transmits the internal pressure of the reaction chamber 2 to the valve body.

  The liquid tank 6 and the reaction chamber 2 of the solution tank 5 are partitioned by a wall member, so that the solution tank 5 and the reaction chamber 2 are configured as a single container member, and a communication hole is formed in the wall member that partitions the liquid chamber 6 and the reaction chamber 2. It is also possible to form the pressure adjusting valve 13 in the communication hole. Thereby, the liquid feeding pipe 4 becomes unnecessary, and the number of parts can be reduced.

  The operation of the hydrogen generation facility 1 described above will be described.

  The reaction solution 7 is fed from the liquid chamber 6 of the solution tank 5 to the reaction chamber 2 through the liquid feeding tube 4. Combined with the pressurization of the liquid chamber 6, the internal pressure of the reaction chamber 2 in a state in which hydrogen is not generated is set to a low pressure at which the pressure regulating valve 13 is opened, and is passed through the liquid feed pipe 4. Reaction solution 7 is fed.

  When the reaction solution 7 is sent to the reaction chamber 2, the reaction solution 7 and the work 3 come into contact with each other and react to generate hydrogen. When hydrogen is generated, the internal pressure of the reaction chamber 2 rises and exceeds the valve opening pressure of the pressure regulating valve 13 (the pressure regulating valve 13 is closed). When the internal pressure of the reaction chamber 2 increases, the pressure regulating valve 13 is closed, and the supply of the reaction solution 7 from the liquid feeding pipe 4 is stopped.

  When the reaction solution 7 is not supplied, the reaction rate of the hydrogen generation reaction in the reaction chamber 2 decreases, and the generated hydrogen is discharged from the hydrogen conduit 11 of the reaction chamber 2. When the internal pressure of the reaction chamber 2 is lowered, the pressure is reduced so that the pressure regulating valve 13 is opened. Again, the reaction solution 7 is sent from the liquid chamber 6 of the solution tank 5 to the reaction chamber 2, and the reaction solution 7 and the workpiece 3 come into contact with each other to generate hydrogen.

  Here, in order to send the reaction solution 7 from the liquid chamber 6 of the solution tank 5, a pressurizing means is used. That is, the movable wall 8 is biased toward the liquid chamber 6 by the compression spring 9, and the reaction solution 7 is fed by the applied pressure that presses the liquid chamber 6 against the movable wall 8. A force discharged from the solution tank 5 is constantly applied to the reaction solution 7 by pressurization through the movable wall 8 by the compression spring 9. However, the pressure changes depending on the amount of displacement of the compression spring 9.

  With respect to the change in the discharge speed of the reaction solution 7, the valve is opened by lowering the internal pressure of the reaction solution 7, and the pressure adjustment valve 13 having a constant valve opening pressure is provided. Regardless, the discharge speed of the reaction solution 7 is constant. In addition, since the pressure adjustment valve 13 is opened and closed depending on the relationship between the internal pressure and the external pressure of the reaction chamber 2, the external pressure (specifically, atmospheric pressure) is constant, so the internal pressure of the reaction chamber 2 is kept substantially constant. Be drunk.

  For this reason, the reaction solution 7 can be stably supplied to the reaction chamber 2 by the pressure state without using power, and hydrogen can be generated. Further, by changing the volume of the liquid chamber 6 by the movable wall 8, it is possible to pressurize the liquid chamber 6 and maintain a pressure state in which the pressure adjustment valve 13 is opened. Further, since the movable wall 8 is pressed by the urging force of the compression spring 9, the movable wall 8 can be pressed with a very simple configuration.

  Here, specific examples of the workpiece 3 and the reaction solution 7 will be described.

  Sodium borohydride is used for the work 3 and malic acid aqueous solution is used for the reaction solution 7. Sodium borohydride is solid and may be in the form of powder or tablet. The concentration of the malic acid aqueous solution is 5% to 60%, preferably 10% to 40%. Usually, a malic acid aqueous solution having a concentration of 25% is used. The hydrogen generation reaction is the following reaction with sodium borohydride and water of malic acid aqueous solution. Malic acid acts as a reaction accelerator.

NaBH ₄ + 2H ₂ O → NaBO ₂ + 4H ₂
The reaction involving this reaction accelerator is extremely fast, and a yield of nearly 90% can be obtained in about 10 seconds. In order to react as slowly as possible while generating the necessary amount of hydrogen, the amount of water supplied to the sodium borohydride may be controlled.

In the first hydrogen generation facility , the reaction solution 7 is fed when the pressure in the reaction chamber 2 falls below the valve opening pressure of the pressure regulating valve 13. Actually, the design is such that the pressure fluctuation in the reaction chamber 2 is kept small. The pressure in the reaction chamber 2 is determined by the hydrogen discharge speed from the reaction chamber 2, the supply speed of the reaction solution 7, the reaction speed of the workpiece 3 and the reaction solution 7, and the volume of the reaction chamber 2. Among these, the reaction rate is constant, and the hydrogen discharge rate is determined by the setting of the regulator 12. Since the reaction solution 7 is supplied dropwise from the liquid feeding pipe 4 to the workpiece 3, the supply speed depends on the droplet formation speed at the open end of the liquid feeding pipe 4. That is, by regulating the inner diameter of the opening end of the liquid feeding tube 4, the pressure fluctuation in the reaction chamber 2 can be suppressed to be small. For example, the following design values and specifications are applied.

Hydrogen discharge rate 15cc / min
Volume of reaction chamber 2 70cc
Feed rate of reaction solution 7 0.006 cc / min
Inner diameter 0.2mm of liquid pipe 4 open end
Inner diameter of liquid feeding pipe 2.0mm
Opening pressure of pressure regulating valve 13 100 kPa (gauge pressure)
That is, the internal pressure of the liquid chamber 6 of the solution tank 5 of the first hydrogen generation facility is pressurized by the compression spring 9 and maintained higher than 100 kPa, and the pressure regulating valve 13 has a pressure in the reaction chamber 2 of 100 kPa. The valve opening pressure is set to open when For this reason, it is not necessary to accurately control the pressurizing means even under a pressure higher than the atmospheric pressure.

  The valve opening pressure of the pressure regulating valve 13 is not limited to 100 kPa as long as the internal pressure of the reaction chamber 2 is set lower than the internal pressure of the liquid chamber 6 of the solution tank 5. For example, the gauge pressure can be set to an arbitrary value such as 0 kPa (atmospheric pressure) as a predetermined value.

  When the pressure adjusting valve 13 is opened and the reaction solution 7 is sent to the reaction chamber 2, the pressure varies depending on the reaction rate of hydrogen generation and the state of the equipment, but the design value of the valve opening pressure of the pressure adjusting valve 13 is used. Certainly, 100 kPa is a design value that takes into account a value that absorbs this fluctuation. Accordingly, the operation can be performed while maintaining the pressure of the reaction chamber 2 as constant as possible.

  The example of the combination as the workpiece | work 3 and the reaction solution 7 is demonstrated.

  When a borohydride salt, an aluminum hydride salt, a solid or a basic solution is used as the work 3, an organic acid is 5% to 60% (10% to 40%), usually 25%, as the reaction solution 7. Used at a concentration of. Sodium, potassium and lithium are used as the salt of the work 3, and citric acid, malic acid and succinic acid are used as the organic acid of the reaction solution 7.

  When a borohydride salt, an aluminum hydride salt, a solid or a basic solution is used as the work 3, a metal chloride is used as the reaction solution 7 at a concentration of 1% to 20%. Sodium, potassium and lithium are used as the salt of the work 3, and nickel, iron and cobalt are usually used at a concentration of 12% as the metal of the reaction solution 7.

  When a metal chloride (solid or aqueous solution) is used as the work 3, the basic solution of borohydride salt or aluminum hydride salt is 1% to 20%, usually 12% as the reaction solution 7. Used in concentration. Nickel, iron, and cobalt are used as the metal of the work 3, and sodium, potassium, and lithium are used as the salt of the reaction solution 7.

  Further, when a metal whose oxidation-reduction potential is lower than that of hydrogen is used as the work 3, an acid is used as the reaction solution 7. Magnesium, aluminum, and iron are used as the metal of the work 3, and hydrochloric acid and sulfuric acid are used as the acid of the reaction solution 7.

  When an amphoteric metal is used as the work 3, a basic aqueous solution is used as the reaction solution 7. Aluminum, zinc, tin, and lead are used as the amphoteric metal of the work 3, and sodium hydroxide is used as the basic aqueous solution of the reaction solution 7.

A hydrogen generation facility according to an embodiment of the present invention will be described based on FIG. In addition, the same code | symbol is attached | subjected to the same member as the member shown in FIG. 1, and the overlapping description is abbreviate | omitted.

A hydrogen generation facility 14 according to an embodiment of the present invention includes a pair of magnets 15 (magnet members) as pressure means instead of the compression spring 9 as the pressure means of the hydrogen generation facility 1 shown in FIG. It has a configuration with. That is, the movable wall 8 is urged toward the liquid chamber 6 by the repulsive force of the magnet 15, and the liquid chamber 6 is pressed against the movable wall 8 and pressurized. Since the movable wall 8 is constantly pressed by the repulsive force of the magnet 15, the reaction solution 7 can be pushed out when the reaction solution 7 flows through the liquid feeding tube 4.

  Therefore, in the hydrogen generation facility 14, the movable wall 8 can be pressed with a very simple configuration by the magnetic force of the magnet 15.

The second hydrogen generation facility will be described with reference to FIG. The same members as those shown in FIGS. 1 and 2 are denoted by the same reference numerals.

  The hydrogen generation facility 18 includes a reaction chamber 2 as a reactant container, and a work 3 (for example, sodium borohydride) as a hydrogen generation reactant is stored in the reaction chamber 2. A solution tank 5 as a reaction container is connected to the reaction chamber 2 via a liquid supply pipe 4 as a fluid supply path, and the liquid supply pipe 4 is connected to a liquid chamber 6 that is a fluid chamber of the solution tank 5. The liquid chamber 6 stores a reaction solution 7 (for example, malic acid aqueous solution) that is a reaction fluid.

  The reaction chamber 2 is connected with a hydrogen conduit 11 as a discharge means, and the hydrogen conduit 11 is provided with a regulator 12 (pressure regulating valve). The amount of hydrogen discharged from the reaction chamber 2 is adjusted by the regulator 12. Although the hydrogen discharge amount can be controlled by the regulator 12, it is also possible to discharge hydrogen at a constant hydrogen pressure using a constant pressure valve.

  On the other hand, a pressure regulating valve 13 for regulating pressure is installed in the liquid feeding pipe 4, and the pressure regulating valve 13 is a valve that regulates the pressure when the reaction solution 7 is allowed to flow. The output pressure when the reaction solution 7 is allowed to flow is the pressure when the pressure regulating valve 13 is opened (valve opening pressure). The pressure regulating valve 13 is closed when the pressure in the reaction chamber 2 exceeds the valve opening pressure, and the pressure regulating valve 13 is opened when the pressure in the reaction chamber 2 falls below the valve opening pressure (below a predetermined value). .

  That is, the pressure regulating valve 13 is an opening / closing means that opens the flow path of the liquid feeding pipe 4 when the pressure in the reaction chamber 2 becomes a predetermined value or less. That is, the internal pressure of the liquid chamber 6 is maintained higher than the pressure at which the pressure regulating valve 13 is opened (pressure exceeding the predetermined pressure value of the reaction chamber 2 for opening the pressure regulating valve 13). Is configured such that the valve body is opened to allow the reaction solution 7 to flow from the liquid chamber 6 side to the reaction chamber 2 side when the internal pressure of the reaction chamber 2 becomes a predetermined value or less.

  The pressure adjustment valve 13 is, for example, a constant pressure valve, and includes a primary flow path that is a flow path on the liquid chamber 6 side of the solution tank 5, a secondary flow path that is a flow path on the reaction chamber 2 side, a primary flow path, It comprises a valve body provided between the secondary flow paths, an external pressure transmission path that transmits external pressure to the valve, and an internal pressure transmission path that transmits the internal pressure of the reaction chamber 2 to the valve body.

  In addition to the liquid feeding pipe 4, the reaction chamber 2 and the liquid chamber 6 of the solution tank 5 are connected by a pressure transmission pipe 16 as a pressurizing flow path, and the hydrogen generated in the reaction chamber 2 passes through the pressure transmission pipe 16 to the solution tank. 5 to the liquid chamber 6. The pressure transmission pipe 16 is provided with a check valve 17, and the check valve 17 allows hydrogen to flow only from the reaction chamber 2 to the liquid chamber 6. That is, hydrogen does not flow from the liquid chamber 6 to the reaction chamber 2.

  The principle of supplying the reaction solution 7 to the reaction chamber 2 is based on the pressure difference between the two generated by the increase in the internal pressure of the solution tank 5 and the pressure reduction in the reaction chamber 2. When hydrogen is generated in the reaction chamber 2 and the pressure is increased, hydrogen flows from the reaction chamber 2 into the solution tank 5 and the internal pressure of the solution tank 5 is increased. On the other hand, in the reaction chamber 2, hydrogen is discharged from the hydrogen conduit 11 through the regulator 12, so that the pressure in the reaction chamber 2 decreases. Therefore, a pressure difference is generated between the solution tank 5 and the reaction chamber 2, and the reaction solution 7 moves to the reaction chamber 2 side.

  The liquid tank 6 and the reaction chamber 2 of the solution tank 5 are separated by a wall member, so that the solution tank 5 and the reaction chamber 2 are configured as one container member, and two wall members that separate the liquid chamber 6 and the reaction chamber 2 are provided. It is also possible to provide a configuration in which the pressure adjusting valve 13 is provided in one communication hole and the check valve 17 is provided in the other communication hole. Thereby, the liquid feeding pipe 4 and the pressure transmission pipe 16 become unnecessary, and the number of parts can be reduced.

  The operation of the hydrogen generation facility 18 described above will be described.

  The reaction solution 7 is fed from the liquid chamber 6 of the solution tank 5 to the reaction chamber 2 through the liquid feeding tube 4. Combined with the pressurization of the liquid chamber 6, the internal pressure of the reaction chamber 2 in a state in which hydrogen is not generated is set to a low pressure at which the pressure regulating valve 13 is opened, and is passed through the liquid feed pipe 4. Reaction solution 7 is fed.

  When the reaction solution 7 is sent to the reaction chamber 2, the reaction solution 7 and the work 3 come into contact with each other and react to generate hydrogen. When hydrogen is generated, the internal pressure of the reaction chamber 2 rises and exceeds the valve opening pressure of the pressure regulating valve 13 (the pressure regulating valve 13 is closed). When the internal pressure of the reaction chamber 2 increases, the pressure regulating valve 13 is closed, and the supply of the reaction solution 7 from the liquid feeding pipe 4 is stopped.

  When the reaction solution 7 is not supplied, the reaction rate of the hydrogen generation reaction in the reaction chamber 2 decreases, and the generated hydrogen is discharged from the hydrogen conduit 11 of the reaction chamber 2. When the internal pressure of the reaction chamber 2 is lowered, the pressure is reduced so that the pressure regulating valve 13 is opened. Again, the reaction solution 7 is sent from the liquid chamber 6 of the solution tank 5 to the reaction chamber 2, and the reaction solution 7 and the workpiece 3 come into contact with each other to generate hydrogen.

  Here, in order to send the reaction solution 7 from the liquid chamber 6 of the solution tank 5, a pressurizing means is used. That is, when hydrogen is generated in the reaction chamber 2 and the pressure rises, hydrogen is sent from the pressure transmission pipe 16 to the solution tank 5, and the pressure is transmitted from the reaction chamber 2 to the solution tank 5. At the same time, when the hydrogen in the reaction chamber 2 is discharged from the hydrogen conduit 11, the internal pressure in the reaction chamber 2 decreases, and the check valve 17 keeps the internal pressure in the solution tank 5 higher than the internal pressure in the reaction chamber 2. The solution tank 5 is pressurized and the reaction solution 7 is fed.

  However, the pressure changes depending on the amount of hydrogen generated and the amount of hydrogen consumed by the fuel cell, and the discharge rate of the reaction solution 7 changes depending on the pressure change. With respect to the change in the supply speed, the discharge speed is constant regardless of the pressure in the solution tank 5 by the pressure adjusting valve 13 provided in the liquid feeding pipe 4 with a constant valve opening pressure.

  For this reason, the reaction solution 7 can be stably supplied to the reaction chamber 2 by the pressure state without using power, and hydrogen can be generated. Further, it is possible to maintain a pressure state in which the pressure tank 13 is opened by pressurizing the solution tank 5 with hydrogen flowing in through the check valve 17 of the pressure transmission pipe 16.

The reaction conditions and design values are the same as those of the first hydrogen generation facility shown in FIG.

4, illustrating a fuel cell system with reference to FIG.

FIG. 4 shows a schematic configuration of the first fuel cell system, and FIG. 5 shows a schematic configuration of the second fuel cell system.

  A fuel cell system 21 shown in FIG. 4 is a system in which the hydrogen generation facility 1 shown in FIG. That is, the fuel cell 22 includes an anode chamber 23, and the anode chamber 23 forms a space in contact with the anode chamber of the fuel cell 24. The anode chamber is a space that temporarily holds hydrogen consumed by the anode.

  The anode chamber 23 and the reaction chamber 2 are connected by a hydrogen conduit 11, and hydrogen generated in the reaction chamber 2 is supplied to the anode chamber of the anode chamber 23. The hydrogen supplied to the anode chamber is consumed by the fuel cell reaction at the anode. The amount of hydrogen consumed at the anode is determined according to the output current of the fuel cell 22.

  Incidentally, the regulator 12 provided in the hydrogen conduit 11 shown in FIG. 1 is not attached because it is not necessary to install it.

  The fuel cell system 21 described above can be a fuel cell system 21 including the hydrogen generation facility 1 that can stably supply the reaction solution 7 and generate hydrogen without using a complicated mechanism or power. .

  A fuel cell system 25 shown in FIG. 5 is a system in which the hydrogen generation facility 18 shown in FIG. That is, the fuel cell 22 includes an anode chamber 23, and the anode chamber 23 forms a space in contact with the anode chamber of the fuel cell 24. The anode chamber is a space that temporarily holds hydrogen consumed by the anode.

  The anode chamber 23 and the reaction chamber 2 are connected by a hydrogen conduit 11, and hydrogen generated in the reaction chamber 2 is supplied to the anode chamber of the anode chamber 23. The hydrogen supplied to the anode chamber is consumed by the fuel cell reaction at the anode. The amount of hydrogen consumed at the anode is determined according to the output current of the fuel cell 22.

  The regulator 12 provided in the hydrogen conduit 11 shown in FIG. 3 is not attached because it is not necessary to install it.

  The fuel cell system 25 described above can be a fuel cell system 25 including a hydrogen generation facility 14 that can stably supply the reaction solution 7 and generate hydrogen without using a complicated mechanism or power. .

  INDUSTRIAL APPLICABILITY The present invention can be used, for example, in the industrial field of a hydrogen generation facility that decomposes metal hydrides to generate hydrogen and a fuel cell system that uses hydrogen generated in the hydrogen generation facility as fuel.

It is a schematic diagram of a hydrogen generating facility. 1 is a schematic configuration diagram of a hydrogen generation facility according to an embodiment of the present invention. It is a schematic diagram of a hydrogen generating facility. It is a schematic configuration diagram of a fuel cell system. It is a schematic configuration diagram of a fuel cell system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 14, 18 Hydrogen generating equipment 2 Reaction chamber 3 Work 4 Liquid feeding pipe 5 Solution tank 6 Liquid chamber 7 Reaction solution 8 Movable wall 9 Compression spring 10 Air intake 11 Hydrogen conduit 12 Regulator 13 Pressure adjustment valve 15 Magnet 16 Pressure transmission Pipe 17 Check valve 21, 25 Fuel cell system 22 Fuel cell 23 Anode chamber 24 Fuel cell

Claims (4)

A reaction vessel having a fluid chamber in which the reaction fluid is accommodated;
A pressurizing means for pressurizing the fluid chamber;
A reactant container containing a hydrogen generation reactant in which generation of hydrogen is promoted by sending a reaction fluid in a fluid chamber;
A discharge means for discharging hydrogen generated in the reactant container;
A fluid supply path that allows the reaction fluid to flow through the fluid chamber of the reaction container and the reactant container;
Open / close means for opening the flow path of the fluid flow path when the pressure of the reactant container provided in the fluid supply path falls below a predetermined value;
The pressure of the fluid chamber pressurized by the pressurizing means is maintained higher than the pressure for opening the opening / closing means ,
The pressurizing means is a movable wall that makes the volume of the fluid chamber variable, and a pressing means that presses the movable wall to pressurize the pressure of the fluid chamber,
The hydrogen generating facility, wherein the pressing means is a magnet member that presses the movable wall with a magnetic force . The hydrogen generation facility according to claim 1 ,
The opening / closing means is a pressure regulating valve that opens the valve body in a state that allows the reaction fluid to flow from the fluid chamber side to the reactant container side at a constant pressure when the internal pressure of the reactant container is lower than the internal pressure of the fluid chamber. A hydrogen generation facility characterized by this. 3. A fuel cell system comprising: a fuel cell anode chamber having an anode chamber to which hydrogen is supplied; and the discharge means of the hydrogen generation facility according to claim 1 or 2. The fuel cell system according to claim 3, wherein
The anode chamber and reactant container form a closed space
A fuel cell system.

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