JP6855657B2 - Power generation system using hydrogen and hydrogen generator - Google Patents

Description

The present invention relates to a power generation system using hydrogen and a hydrogen generator.

Patent Document 1 describes hydrogenation in response to the problem that if the amount of hydrogen generated per unit time is not stable, the output of hydrogen becomes unstable when the generated hydrogen is supplied to a fuel cell to generate power. In a hydrogen generator that is provided with a reaction vessel in which a magnesium hydrolysis reaction is carried out and generates hydrogen by supplying water or an acidic solution to the reaction vessel, a height for loading magnesium hydride is provided at the bottom of the reaction vessel. It is characterized in that a plurality of tubular portions having different characteristics are erected, and further, a dropping portion for dropping water or an acidic solution onto the magnesium hydride loaded in the tubular portion is provided from above the highest tubular portion. A hydrogen generator is disclosed.

Then, in Patent Document 1, since water or an acidic solution is dropped on the high cylinder portion, the hydrolysis reaction is started from the magnesium hydride loaded in the highest cylinder portion to generate hydrogen, and water or water or When the dripping of the acidic solution continues, water or the acidic solution overflows from the highest cylinder, water or the acidic solution is supplied to the next tallest cylinder, and hydrogen is generated to generate hydrogen per unit time. It is explained that it is possible to stably generate hydrogen by suppressing fluctuations in the amount of hydrogen generated.

Japanese Unexamined Patent Publication No. 2013-133232

By the way, for example, when water is dropped on magnesium hydride and hydrogen is generated by a hydrolysis reaction, magnesium hydroxide is produced as a by-product.

Therefore, when water is dropped onto the cylinder portion loaded with magnesium hydride, a layer of magnesium hydroxide produced by the dropping of water is formed on the surface of the filled magnesium hydride.

Then, at the time of subsequent dropping of water, the hydrolysis reaction of magnesium hydride may be inhibited, and hydrogen may not be generated efficiently.

The present invention has been made in view of such circumstances, and is a hydrogen generator capable of easily controlling the amount of hydrogen generated and efficiently generating hydrogen, and hydrogen generated by the hydrogen generator. It is an object of the present invention to provide a power generation system using.

The present invention is grasped by the following configuration in order to achieve the above object.
(1) The power generation system of the present invention is a power generation system using hydrogen, and the power generation system includes a power generation device and a hydrogen generator for generating the hydrogen supplied to the power generation device, and the hydrogen. The generator is an aqueous solution storage unit that stores an aqueous solution, a raw material storage unit that stores a raw material containing magnesium in a state in which hydrogen can be generated by a reaction with the aqueous solution, and the raw material storage unit to the aqueous solution storage unit. It is provided with a raw material supply mechanism for supplying the raw material toward the subject.

(2) In the configuration of the above (1), the aqueous solution storage portion includes an upper space above the aqueous solution in which the aqueous solution does not exist, and the raw material supply mechanism is directed from the upper space side toward the aqueous solution. The hydrogen generator is provided to supply the raw material, and the hydrogen generator drives the raw material supply mechanism based on the pressure measuring device for measuring the pressure in the upper space and the pressure measurement result of the pressure measuring device. A control unit that controls the supply amount of the raw material to be supplied toward the aqueous solution.

(3) In the configuration of the above (2), the aqueous solution storage portion is formed by a lower space below the upper space in which the aqueous solution exists, a partition portion that vertically partitions the lower space, and the partition portion. A drainage port provided on the lower side for draining the aqueous solution and a water supply port provided on the upper side of the partition portion for supplying the aqueous solution are provided, and the partition portion is provided by a reaction between the raw material and the aqueous solution. The produced by-product is provided with a plurality of through holes provided so as to be able to settle below the partition portion.

(4) In the configuration of (3) above, the hydrogen generator includes a drainage control valve that controls the drainage of the aqueous solution from the drainage port and a water supply control valve that controls the supply of the aqueous solution from the water supply port. The control unit controls the drainage control valve and the water supply control valve based on the supply amount of the raw material to be supplied toward the aqueous solution.

(5) In any one of the above configurations (1) to (4), in the power generation system, the hydrogen is provided between the aqueous solution storage unit and the power generation device, and is generated in the aqueous solution storage unit. It is provided with a buffer mechanism capable of storing the hydrogen.

(6) In the configuration of (5) above, the power generation system includes a purification mechanism provided between the hydrogen storage unit, the power generation device, and the buffer mechanism. It is provided with a first purification unit having a first dehydration unit and a first impurity gas removal unit, and a second purification unit having a second dehydration unit and a second impurity gas removal unit, and is passed through the first purification unit. When the hydrogen is supplied to the power generation device or the buffer mechanism, the second dehydration section of the second purification section can be dried, and the hydrogen is passed through the second purification section to the power generation device or the power generation device or the said. When supplying to the buffer mechanism, the first dehydrated portion of the first purified portion can be dried.

(7) In any one of the configurations (1) to (4), the power generation system includes a purification mechanism provided between the hydrogen storage unit and the power generation device. The purification mechanism includes a first purification unit having a first dehydration unit and a first impurity gas removal unit, and a second purification unit having a second dehydration unit and a second impurity gas removal unit, and the first purification unit. When the hydrogen is supplied to the power generation device, the second dehydration section of the second purification section can be dried, and the hydrogen is supplied to the power generation device through the second purification section. At that time, the first dehydrated portion of the first purified portion can be dried.

(8) The hydrogen generator of the present invention has an aqueous solution storage unit for storing an aqueous solution, a raw material storage unit for storing a raw material containing magnesium in a state where hydrogen can be generated by reaction with the aqueous solution, and the raw material storage unit. A raw material supply mechanism for supplying the raw material to the aqueous solution storage unit is provided.

(9) In the configuration of the above (8), the aqueous solution storage portion includes an upper space above the aqueous solution in which the aqueous solution does not exist, and the raw material supply mechanism is directed from the upper space side toward the aqueous solution. The hydrogen generator is provided to supply the raw material, and the hydrogen generator drives the raw material supply mechanism based on the pressure measuring device for measuring the pressure in the upper space and the pressure measurement result of the pressure measuring device. A control unit that controls the supply amount of the raw material to be supplied toward the aqueous solution.

(10) In the configuration of the above (9), the aqueous solution storage portion is formed by a lower space below the upper space in which the aqueous solution exists, a partition portion that vertically partitions the lower space, and the partition portion. A drainage port provided on the lower side for draining the aqueous solution and a water supply port provided on the upper side of the partition portion for supplying the aqueous solution are provided, and the partition portion is provided by a reaction between the raw material and the aqueous solution. The produced by-product is provided with a plurality of through holes provided so as to be able to settle below the partition portion.

(11) In the configuration of (10) above, the hydrogen generator controls a drainage control valve that controls the amount of drainage of the aqueous solution that is drained from the drainage port and a water supply amount of the aqueous solution that is supplied from the water supply port. The control unit controls the drainage control valve and the water supply control valve based on the supply amount of the raw material to be supplied toward the aqueous solution.

According to the present invention, it is possible to provide a hydrogen generator capable of easily controlling the amount of hydrogen generated and efficiently generating hydrogen, and a power generation system using hydrogen generated by the hydrogen generator. ..

It is sectional drawing for demonstrating the power generation system of 1st Embodiment which concerns on this invention. It is sectional drawing for demonstrating the power generation system of 2nd Embodiment which concerns on this invention.

Hereinafter, embodiments for carrying out the present invention (hereinafter, embodiments) will be described in detail with reference to the accompanying drawings.
The same elements are numbered the same throughout the description of the embodiment.

(First Embodiment)
FIG. 1 is a cross-sectional view for explaining the power generation system 1 of the first embodiment according to the present invention.
In the following, while explaining the power generation system 1, the hydrogen generator 2 of the first embodiment according to the present invention will also be described.

As shown in FIG. 1, the power generation system 1 includes a power generation device (not shown) and a hydrogen generator 2 for generating hydrogen to be supplied to the power generation device, which will be described in detail below.

The power generation device (not shown) assumes, for example, a general turbine generator that drives a turbine using hydrogen as fuel in the present embodiment.
However, as in another embodiment described later, the power generation device (not shown) may be a fuel cell.

The hydrogen generator 2 is derived from the aqueous solution storage unit 10 for storing the aqueous solution 11, the raw material storage unit 20 for storing the raw material 21 containing magnesium in a state where hydrogen can be generated by the reaction with the aqueous solution 11, and the raw material storage unit 20. A raw material supply mechanism 30 for supplying the raw material 21 to the aqueous solution storage unit 10 is provided.

The aqueous solution 11 may be water, an alkaline aqueous solution containing ammonia or the like, or an acidic aqueous solution such as hydrochloric acid or nitric acid.
In terms of running cost when operating the power generation system 1, it is advantageous that the aqueous solution 11 is water, while in terms of reactivity with the raw material 21, the aqueous solution 11 is an alkaline aqueous solution containing ammonium ions. Alternatively, an acidic aqueous solution such as hydrochloric acid is more advantageous.

The raw material 21 is preferably in the form of particles having a small average particle size (in the state of microparticles or nanoparticles) in order to enhance the reactivity with the aqueous solution 11, and for example, hydrogen can be generated by the reaction with the aqueous solution 11. Examples of the magnesium in the state include metallic magnesium, magnesium hydride and the like.

However, the term "particle" does not limit the shape to be spherical, and if the average outer diameter when averaging the maximum outer diameters of each particle is on the order of micrometers, it is a microparticle, which is higher than the order of micrometer. If it is also small (including submicrons), it should be understood as a nanoparticle.

The raw material 21 may be a mixture of metallic magnesium and magnesium hydride.
Further, the raw material 21 may contain a part of the material used for producing the metallic magnesium or the hydrogenated magnesium without becoming the metallic magnesium or the hydrogenated magnesium.

The aqueous solution storage unit 10 also functions as a reaction chamber in which the raw material 21 and the aqueous solution 11 react with each other, and constitutes a container having a closed structure in which the aqueous solution 11 and hydrogen generated in the reaction do not leak to the outside.

The aqueous solution storage unit 10 is above the aqueous solution 11 by supplying water to the aqueous solution 11 so that an upper space US in which the aqueous solution 11 does not exist is formed in the aqueous solution storage unit 10. It is provided with an upper space US in which the aqueous solution 11 does not exist.

Specifically, the configuration for forming the upper space US will be described. First, the aqueous solution storage unit 10 is provided to determine the upper limit position of the water surface LSF of the aqueous solution 11, and the upper level sensor 12 for detecting the water surface LSF and the aqueous solution 11 It is provided to determine the lower limit position of the water surface LSF, and includes a lower level sensor 13 for detecting the water surface LSF.

Further, the aqueous solution storage portion 10 is provided below the lower space LS in which the aqueous solution 11 is located below the upper space US, the partition portion 14 that partitions the lower space LS vertically, and the aqueous solution 14 below the partition portion 14. A drainage port 15 for draining the water 11 and a water supply port 16 provided above the partition portion 14 for supplying the aqueous solution 11 are provided, and the partition portion 14 is provided with a plurality of through holes 14A through which the aqueous solution 11 can pass. ing.

The hydrogen generator 2 is connected to the drainage port 15 and is located on the drainage line 15A (also referred to as a drainage pipe) for draining the aqueous solution 11 in the aqueous solution storage unit 10 and the drainage line 15A near the drainage port 15. It is provided with a drainage control valve 15B for controlling the drainage (presence or absence of drainage) of the aqueous solution 11 from the drainage port 15.

Similarly, the hydrogen generator 2 is connected to the water supply port 16 and has a water supply line 16A (also referred to as a water supply pipe) for supplying a new aqueous solution 11 into the aqueous solution storage unit 10 and a water supply line 16A near the water supply port 16. It is provided above and includes a water supply control valve 16B for controlling the water supply (presence / absence of water supply) of the aqueous solution 11 from the water supply port 16.

Therefore, at a predetermined timing for discharging and supplying water, which will be described later, the control unit (hereinafter, simply referred to as the control unit) of the hydrogen generator 2 (not shown) first opens the drainage control valve 15B and the aqueous solution storage unit 10. After draining the aqueous solution 11 inside, the drainage control valve 15B is closed and the water supply control valve 16B is opened so that the water surface LSF of the aqueous solution 11 is located between the upper level sensor 12 and the lower level sensor 13. As a result, the aqueous solution 11 is supplied into the aqueous solution storage unit 10 and the water supply control valve 16B is closed again.

For example, at the time of drainage, the lower level sensor 13 detects the water surface LSF of the aqueous solution 11, and the aqueous solution 11 is drained to the extent that the water surface LSF of the aqueous solution 11 is lowered to the partition portion 14.

Specifically, since the amount of drainage per unit time when the drainage control valve 15B is opened can be checked in advance, the starting point is that the lower level sensor 13 detects the water surface LSF of the aqueous solution 11. The drainage control valve 15B may be closed when the time for draining the aqueous solution 11 required for the water surface LSF of the aqueous solution 11 to decrease to the partition portion 14 has elapsed.

Then, after the drainage of the aqueous solution 11 is completed, the water supply of the aqueous solution 11 is started, and the water surface LSF of the aqueous solution 11 is the upper level sensor 12 based on the detection of the water surface LSF of the aqueous solution 11 by the lower level sensor 13. The water supply is terminated when the aqueous solution 11 is supplied to the extent that it is located between the upper level sensor 13 and the lower level sensor 13, and the water surface LSF of the aqueous solution 11 is located between the upper level sensor 12 and the lower level sensor 13. By doing so, the aqueous solution storage portion 10 is provided with an upper space US in which the aqueous solution 11 does not exist, which is above the aqueous solution 11.

Specifically, since the amount of water supplied per unit time when the water supply control valve 16B is opened can be checked in advance, the starting point is that the lower level sensor 13 detects the water surface LSF of the aqueous solution 11. The water supply control valve 16B is closed when the time required to supply the water surface LSF of the aqueous solution 11 to be located between the upper level sensor 12 and the lower level sensor 13 has elapsed. do it.

When the upper level sensor 12 detects the water surface LSF of the aqueous solution 11 at a time other than the predetermined timing for discharging and supplying water, the control unit (not shown) opens the drainage control valve 15B and the water surface LSF of the aqueous solution 11 is at the upper level. After draining the aqueous solution 11 located between the sensor 12 and the lower level sensor 13, the drain control valve 15B is closed.

On the contrary, when the lower level sensor 13 detects the water surface LSF of the aqueous solution 11 at a time other than the predetermined timing of discharging water, the control unit (not shown) opens the water supply control valve 16B and the water surface LSF of the aqueous solution 11 is released. After supplying water to the extent that the aqueous solution 11 is located between the upper level sensor 12 and the lower level sensor 13, the water supply control valve 16B is closed.

The inner diameters of the plurality of through holes 14A of the partition portion 14 described above are set to a size that does not hinder the passage of by-products such as magnesium hydroxide produced by the reaction between the raw material 21 and the aqueous solution 11.

That is, the partition portion 14 is provided with a plurality of through holes 14A provided so that the by-products produced by the reaction between the raw material 21 and the aqueous solution 11 can be precipitated below the partition portion 14.

Therefore, the aqueous solution 11 having a high concentration of by-products is drained from the drain port 15 provided below the partition portion 14.

The inner diameters of the plurality of through holes 14A of the partition portion 14 are such that when the raw material 21 is settled below the partition portion 14 and hydrogen is generated below the partition portion 14, bubbles due to the hydrogen are generated. It can pass above the partition 14 without being disturbed, or even if hydrogen is temporarily accumulated on the lower surface of the partition 14, it will naturally move to the upper side of the partition 14. It is also.

On the other hand, as shown in FIG. 1, the hydrogen generator 2 includes a stirring mechanism 40 for stirring the aqueous solution 11 above the partition portion 14.

Specifically, the stirring mechanism 40 includes a motor 41 provided on the outside of the upper wall portion of the aqueous solution storage portion 10 and a propeller 42 arranged in the aqueous solution 11 above the partition portion 14 to stir the aqueous solution 11. A shaft 43 that transmits the rotational force of the motor 41 to the propeller 42 and rotates the propeller 42 so as to stir the aqueous solution 11 is provided.
The insertion portion into which the shaft 43 is inserted into the aqueous solution storage portion 10 has a confidential structure that does not hinder rotation and can maintain confidentiality.

The stirring mechanism 40 is provided to prevent the raw material 21 that has not reacted with the aqueous solution 11 from accumulating on the partition portion 14, and as will be described later, according to the configuration of the present invention. It is not always necessary because the reaction efficiency between the raw material 21 and the aqueous solution 11 is high.

Then, a control unit (not shown) periodically drives the stirring mechanism 40 to promote the reaction between the raw material 21 and the aqueous solution 11.
The stirring mechanism 40 may be driven at all times, but by periodically driving the stirring mechanism 40, by-products can be easily settled below the partition portion 14 and above the partition portion 14. It is possible to reduce the concentration of by-products in the aqueous solution 11 and increase the reaction efficiency between the raw material 21 and the aqueous solution 11.

Further, since the partition portion 14 is provided, when the stirring mechanism 40 is driven, the by-products that have settled below the partition portion 14 are wound up and are contained in the aqueous solution 11 above the partition portion 14. Since it is possible to suppress an increase in the content concentration of the by-product of the above, it is possible to suppress a decrease in the reaction efficiency between the raw material 21 and the aqueous solution 11 by driving the stirring mechanism 40.

On the other hand, the hydrogen generator 2 communicates with the emergency exhaust line 50 (also referred to as an emergency exhaust pipe) connected to the aqueous solution storage unit 10 so as to communicate with the upper space US and the upper space US of the emergency exhaust line 50. The electromagnetic valve 51, which is provided near the part and controls the presence or absence of emergency exhaust, is connected to the emergency exhaust line 50 between the electromagnetic valve 51 and the aqueous solution storage portion 10, and measures the pressure in the upper space US. A pressure measuring device 52 (for example, a digital manostar gauge) is provided.

Therefore, when the result of the pressure measurement of the pressure measuring device 52 for measuring the pressure of the upper space US shows an abnormally high pressure, a control unit (not shown) opens the electromagnetic valve 51 to open the upper space US. The step-down control is performed so that the internal pressure becomes a predetermined first pressure (required primary pressure).
When the predetermined first pressure (required primary pressure) is reached, the control unit (not shown) closes the solenoid valve 51 again.

The raw material storage unit 20 has a work door 22 on the upper side which is opened and closed when the raw material 21 is filled, and when the work door 22 is closed, a container having a closed structure is formed.

Further, the raw material storage unit 20 is provided on the upper side adjacent to the work door 22 and includes a distance measuring device 24 (for example, a displacement sensor) for measuring the distance to the surface of the stored raw material 21. By increasing the distance to the raw material 21 measured by the distance measuring device 24, it is possible to grasp when to add the raw material 21.

The surface of the raw material 21 is not necessarily in a state close to flat like the aqueous solution 11, but the raw material 21 is in a relatively flat state because vibration or the like is generated in the entire raw material 21 by driving the raw material supply mechanism 30 described later. The measurement result of the distance to the raw material 21 measured by the distance measuring device 24 can be used as a guideline for the time when the raw material 21 is added.

However, as will be described later, in the present embodiment, since the supply amount of the raw material 21 supplied to the aqueous solution 11 can be grasped, the supply amount of the raw material 21 supplied to the aqueous solution 11 has reached a predetermined amount as a reference. The raw material 21 may be added, in which case the distance measuring device 24 becomes unnecessary.

The raw material storage section 20 is provided so that at least a part of the bottom wall portion is in close contact with the outside of the upper wall portion of the aqueous solution storage section 10, and the bottom wall portion of the close contact portion is provided. A raw material supply hole 23 for supplying the raw material 21 penetrating the bottom wall into the aqueous solution storage portion 10 is formed.

Further, the aqueous solution storage unit 10 is also formed with a raw material receiving hole 17 for receiving the raw material 21 penetrating the upper wall portion at a position corresponding to the raw material supply hole 23 of the raw material storage unit 20.

On the other hand, the raw material supply mechanism 30 is provided in the raw material storage unit 20.
Specifically, the raw material supply mechanism 30 is arranged adjacent to the motor 31 installed inside the upper wall portion of the raw material storage unit 20 and the inside of the bottom wall portion of the raw material storage unit 20, and the raw material 21 It is provided with a disk 32 for transporting the motor 31 to the position of the raw material supply hole 23, and a shaft 33 for transmitting the rotational force of the motor 31 to the disk 32 to rotate the disk 32.

Although not shown, the raw material storage unit 20 is formed so that the bottom portion and the portion above the raw material supply mechanism 30 are separably configured for the work of incorporating the raw material supply mechanism 30 and integrated with each other. It has become a raw material.

Then, as shown in the perspective view of the disk 32 surrounded by the dotted line frame on the left side of FIG. 1, the disk 32 faces the rotation center O with the rotation center O in between, and is located at a position substantially the same distance from the rotation center O. , A pair of through holes (through hole 32A and through hole 32B) are formed.

Here, as can be seen from FIG. 1, the raw material storage unit 20 is provided with a laterally recessed recess for receiving a part of the disk 32 on the upper side of the portion corresponding to the raw material supply hole 23. The inner surface of the recess is close to the opening on the upper side of the through hole (see the through hole 32B) of the disk 32 located in the recess so that the opening is substantially closed.

Therefore, even if the gas (mainly hydrogen) in the upper space US tries to enter the raw material storage portion 20, when the opening of the through hole (see through hole 32B) of the disk 32 is located on the raw material supply hole 23, Since the opening is almost closed, the gas (mainly hydrogen) in the upper space US cannot enter the raw material storage unit 20 side.

Then, when the through holes (through holes 32A, through holes 32B) of the disk 32 are positioned (see, for example, the positions of the through holes 32A) at positions other than the recesses recessed in the lateral direction that receive a part of the disk 32. The raw material 21 enters the through hole (see through hole 32A), and the through hole (through hole 32A, through hole 32A, through) is located at a position of a recess that is recessed in the lateral direction to receive a part of the disk 32 by rotating the disk 32. When the hole 32B) is positioned (see the position of the through hole 32B), the raw material 21 filled in the through hole (through hole 32A, through hole 32B) passes through the raw material supply hole 23 and the raw material receiving hole 17. , It will be supplied from the upper space US side toward the aqueous solution 11.

Further, in the present embodiment, the hydrogen generator 2 includes a pressure measuring device 61 (for example, a digital manostar gauge) for measuring the pressure of the upper space US1 in which the raw material 21 above the raw material 21 of the raw material storage unit 20 does not exist. A gas supply line 62 (also referred to as a gas supply pipe) for supplying a gas (for example, a low-activity gas such as nitrogen having a low dew point or an inert gas such as helium or argon having a low dew point) to the upper space US1 and a gas supply. It is provided on the line 62 and includes an electromagnetic valve 63 for controlling the presence / absence of gas supply to the upper space US1.

Then, in the control unit (not shown), the pressure in the upper space US1 is a predetermined pressure (for example, in the upper space US of the aqueous solution storage unit 10) based on the measurement result of the pressure measured by the pressure measuring device 61 in the upper space US1. The opening / closing control of the electromagnetic valve 63 is performed so that the pressure becomes the same as the pressure).

Although not shown, the hydrogen generator 2 has a gas exhaust line (also referred to as a gas supply pipe) for exhausting gas in the upper space US1 and gas in the upper space US1 through the gas exhaust line. It also has an electromagnetic valve that controls the presence or absence of exhaust.

Therefore, more accurately, a control unit (not shown) controls the above-mentioned solenoid valve 63 and the solenoid valve that controls the presence or absence of gas exhaust, so that the pressure in the upper space US1 becomes a predetermined pressure (for example, aqueous solution storage). The pressure is controlled to be about the same as the pressure in the upper space US of the portion 10.

By boosting the pressure of the upper space US1, it is possible to further suppress the invasion of gas (mainly hydrogen) in the upper space US into the raw material storage unit 20 side, and accept a part of the disk 32. When the through hole (through hole 32A, through hole 32B) of the disk 32 is located at a position other than the recess recessed in the lateral direction (see, for example, the position of the through hole 32A), this through hole (through hole 32A, through) The raw material 21 efficiently enters the hole 32B).

In the present embodiment, when the through hole (through hole 32A, through hole 32B) is located at the position of the recess that is recessed in the lateral direction to receive a part of the disk 32, the through hole (through hole 32A, through hole 32A, through hole 32B) is formed. The raw material 21 filled in the hole 32B) is supplied to the aqueous solution 11 by dropping from the upper space US side toward the aqueous solution 11 through the raw material supply hole 23 and the raw material receiving hole 17 by its own weight. ..

However, the hydrogen generator 2 inserts a rod-shaped body into the through holes (through holes 32A, through holes 32B) located directly above the raw material supply holes 23 and the raw material receiving holes 17, and the through holes (through holes 32A, through holes 32A, through holes 32B) are inserted. A raw material extrusion mechanism for forcibly extruding the raw material 21 in the hole 32B) may be provided, so that the raw material 21 can be reliably supplied toward the aqueous solution 11.

When such a raw material extrusion mechanism is provided, the rotation of the disk 32 is stopped when the through holes (through holes 32A, through holes 32B) of the disk 32 are located directly above the raw material supply hole 23 and the raw material receiving hole 17. Then, a rod-shaped body is inserted into the through hole (through hole 32A, through hole 32B) to supply the raw material 21 toward the aqueous solution 11, and then the rod-shaped body is pulled out from the through hole (through hole 32A, through hole 32B). Then, the operation of rotating the disk 32 is repeated again.

In the present embodiment, as described above, a pair of through holes (through hole 32A and through hole) are located at positions facing each other with the rotation center O of the disk 32 sandwiched and substantially the same distance from the rotation center O. It is assumed that 32B) is formed, but it is not necessary to be limited to this.

For example, at a position approximately the same distance from the center of rotation O, three through holes of the same size are evenly spaced in the rotation direction of the disk 32 (in this case, between adjacent through holes viewed in the circumferential direction of the disk 32). The angular pitch of the disk 32 may be 120 ° pitch), and four through holes (in this case, the angular pitch between adjacent through holes seen in the circumferential direction of the disk 32) may be provided at equal intervals in the rotation direction. Has a 90 ° pitch.) May be provided.

Further, even if there is only one through hole, the one through hole is recessed in a position other than a laterally recessed portion that accepts a part of the disk 32 and a laterally recessed portion that accepts a part of the disk 32. There is no problem because the raw material 21 can be supplied to the aqueous solution 11 if the positions of the recesses are controlled so as to be alternately located.

However, as the number of through holes increases, it becomes difficult to form recesses recessed in the lateral direction to receive a part of the disk 32. Therefore, the number of through holes is preferably 4 or less.

Further, as the size of the through hole, a size capable of supplying the raw material 21 according to the amount of hydrogen to be generated may be selected.
For example, the mass of the magnesium hydride (weight per 1 mol) is 26.32G, the density of the magnesium hydride is about 2.36 g / cm ^3, a volume of about 11.2 cm ³ weak (about 1 mol) When the raw material 21 made of hydrogenated magnesium is added to the aqueous solution 11, a little less than 45 liters (about 2 mol) of hydrogen is generated in a standard state.

Considering that a hydrogen gas turbine type power generator that generates about 10 MW uses about 60 million m ³ / year of hydrogen, about 114 m ³ of hydrogen is required per minute, which corresponds to this. Considering the through hole as an example, it is as follows.

For example, the thickness of the disk 32 is about 10 cm, the diameter of the disk 32 is about 70 cm, and the inner end of the through hole having a diameter of about 21 cm (the center of the through hole) is located at a position offset by about 10 cm from the center of rotation O. Considering the dimension in which the center of rotation O is located at an offset of about 20.5 cm), the volume of the through hole is about 3346 cm and a little less than ^3.

Therefore, the through hole of the dimension as described above ^{can be filled with the raw material 21 of about 300 mol (= 3346 [cm 3} ] / 11.2 [cm ³ ]), and is composed of this amount of magnesium hydride. If the raw material 21 is put into the aqueous solution 11, about 600 mol (about 13.4 m ³ ) of hydrogen will be generated.

Then, considering the case where two through holes are provided in the disk 32 as in the through holes 32A and 32B of the present embodiment, the through holes (through holes 32A once penetrate through) per rotation. Since the raw material 21 is supplied to the aqueous solution 11 from the hole 32B once), if the disk 32 is rotated once in 12 seconds (5 rotations per minute), the disk 32 is directed to the aqueous solution 11 10 times per minute. The raw material 21 is supplied, and the raw material 21 that sufficiently ^{generates more than 114 m 3} of hydrogen (about 134 m ³ ) per minute can be supplied.

Therefore, when assuming a small (about 10,000 kW) hydrogen gas turbine type power generation device, if the disk 32 is provided with two through holes, the volume of the through holes may be ^{about 3346 cm 3 or less.} it is conceivable that.

However, if the power generation amount of the power generation device increases, the supply amount of the required raw material 21 will increase. Therefore, assuming that the power generation amount is up to about 10 times, the volume of the through hole is about. It is preferable to assume up to 33,460 cm and a ^{little less than 3.}

Accordingly, the volume of the through-hole is preferably in a 35,000 ³ order of 3000 cm ^3.
Considering this, it is preferable that the raw material supply mechanism 30 can supply the raw material 21 capable of generating about ^{100 m 3} to 1000 m ^{3 of hydrogen per minute to the aqueous solution 11.}

The raw material supply mechanism 30 described above is merely an example, and the raw material supply mechanism 30 is provided so as to supply the raw material 21 from the upper space US side toward the aqueous solution 11, and the raw material 21 is provided from the upper space US side. Any configuration may be used as long as it can be supplied toward the aqueous solution 11.

On the other hand, in the present embodiment, a control unit (not shown) drives the motor 31 of the raw material supply mechanism 30 based on the pressure measurement result of the pressure measuring device 52 that measures the pressure of the upper space US of the aqueous solution storage unit 10. The supply amount of the raw material 21 supplied toward the aqueous solution 11 is controlled so that the pressure in the upper space US becomes a predetermined first pressure (obtained primary pressure).

In this way, since the control unit (not shown) controls the supply amount of the raw material 21 supplied toward the aqueous solution 11, the control unit (not shown) grasps how much raw material 21 is supplied to the aqueous solution 11. It is possible to predict an increase in the concentration of by-products such as magnesium hydroxide in the aqueous solution 11 from the total amount of the raw material 21 supplied to the aqueous solution 11 (for example, experimentally obtain data on the concentration change). It is possible to collect it and make a prediction based on the data.
Instead of such an experimental method, it is possible to predict the increase in the concentration of by-products by theoretical calculation.

Therefore, the control unit (not shown) controls the drainage control valve 15B and the water supply control valve 16B as described above based on the supply amount of the raw material 21 supplied toward the aqueous solution 11, and in the present embodiment, the control unit controls the drainage control valve 15B and the water supply control valve 16B. Control is performed so that the concentration of by-products in the aqueous solution 11 does not become too high so that the reaction efficiency between the raw material 21 and the aqueous solution 11 does not decrease.

On the other hand, as shown in FIG. 1, the aqueous solution storage unit 10 is provided with a hydrogen discharge port 18 for discharging hydrogen in the upper space US toward a power generation device (not shown), and the power generation system 1 is provided with a hydrogen discharge port 18. It is connected to a hydrogen discharge port 18 and includes a hydrogen supply unit 70 (also referred to as a hydrogen supply main pipe) that supplies hydrogen generated in the aqueous solution storage unit 10 to a power generation device (not shown).

Further, the power generation system 1 is provided at a position closer to the hydrogen discharge port 18 on the hydrogen supply unit 70, and has an electromagnetic valve 71 that controls the presence or absence of hydrogen discharge from the hydrogen discharge port 18, and hydrogen discharge from the electromagnetic valve 71. It includes a pressure reducing valve 72 provided on the hydrogen supply unit 70 away from the outlet 18, and a solenoid valve 73 provided on the hydrogen supply unit 70 further away from the hydrogen discharge port 18 than the pressure reducing valve 72. ..

The pressure reducing valve 72 applies a hydrogen pressure from a predetermined first pressure (obtained primary pressure) in the upper space US to a predetermined second pressure (desired secondary pressure) for supplying to a power generation device (not shown). It is for depressurizing.

Further, the power generation system 1 includes a buffer mechanism 3 that can supply hydrogen to a power generation device (not shown).

Specifically, the buffer mechanism 3 is connected to the buffer tank 80 at a position where one end is connected between the pressure reducing valve 72 and the solenoid valve 73 of the hydrogen supply unit 70 and the other end is connected to the buffer tank 80 to supply hydrogen. On the lead-in branch line 81 (also referred to as a branch pipe) for drawing into the buffer tank 80, the booster 82 provided on the lead-in branch line 81, and the lead-in branch line 81 between the booster 82 and the buffer tank 80. The solenoid valve 83 provided is provided.

Further, one end of the buffer mechanism 3 is connected to the buffer tank 80, and the other end is connected to a hydrogen supply unit 70 which is on the power generation device side (not shown) than the solenoid valve 73, and hydrogen is transferred from the buffer tank 80 to the hydrogen supply unit 70. A return line 84 (also referred to as a return pipe) for returning to the hydrogen, an electromagnetic valve 85 provided on the return line 84, and a pressure reducing valve provided on the return line 84 between the electromagnetic valve 85 and the hydrogen supply unit 70. It is equipped with 86.

Similarly to the pressure reducing valve 72, the pressure reducing valve 86 also reduces the pressure of hydrogen from the pressure described later in the buffer tank 80 to a predetermined second pressure (obtained secondary pressure) for supplying to a power generation device (not shown). It is for doing.

Then, the buffer mechanism 3 is filled with hydrogen by utilizing the case where there is no request for hydrogen supply from a power generation device (not shown).

Specifically, a control unit (not shown) opens the solenoid valve 71 and the solenoid valve 83, controls the solenoid valve 73 and the solenoid valve 85 to close, and the control unit generates hydrogen. Control is performed so that the device 2 generates hydrogen, and drive control of the booster device 82 is performed.

Therefore, the hydrogen generated by the hydrogen generator 2 is supplied to the lead-in branch line 81 in a state of a predetermined second pressure (obtained secondary pressure) by the pressure reducing valve 72, but the pressure is increased by the booster 82. Therefore, the buffer so that the pressure in the buffer tank 80 becomes a predetermined first pressure similar to the predetermined first pressure (obtained primary pressure) in the upper space US or a predetermined third pressure higher than the first pressure. The tank 80 can be filled with hydrogen.

The buffer mechanism 3 is provided with a pressure measuring device 87 (for example, a digital manostar gauge) for measuring the pressure in the buffer tank 80, and the above-mentioned filling process of hydrogen in the buffer tank 80 is performed by this pressure measuring device. Based on the measurement result of the pressure in the buffer tank 80 measured by 87, the pressure is adjusted to be the first pressure or a predetermined third pressure higher than the first pressure, and when the target pressure is reached, hydrogen is generated. The drive of the device 2 is stopped, and the electromagnetic valve 71 and the electromagnetic valve 83 are closed.

Further, the buffer mechanism 3 includes a connection line 88 (also referred to as a connection pipe) that connects the buffer tank 80 and the emergency exhaust line 50, an electromagnetic valve 89 that is provided on the connection line 88 and controls the presence or absence of emergency exhaust. When the measurement result of the pressure in the buffer tank 80 measured by the pressure measuring device 87 shows an abnormally high pressure, a control unit (not shown) opens the electromagnetic valve 89 to open the buffer tank. The step-down control is performed so that the pressure in 80 becomes a predetermined third pressure higher than the first pressure or the first pressure described above.

However, in the present embodiment, the case where the buffer mechanism 3 is provided in a form of branching from the hydrogen supply unit 70 is shown, but the buffer mechanism 3 may be provided on the hydrogen supply unit 70.

For example, as a modification of the buffer mechanism 3, the pressure reducing valve 72 is omitted, and electromagnetic waves are applied to the hydrogen supply unit 70 between the solenoid valve 71 and the solenoid valve 73 from the aqueous solution storage unit 10 side toward the power generation device side (not shown). It is conceivable that the valve 83 and the buffer tank 80 are provided and the pressure reducing valve 86 is provided on the hydrogen supply unit 70 that is closer to the power generation device than the solenoid valve 73. In this case, the pressure reducing valve 86 is provided in the aqueous solution storage unit 10. Hydrogen is always supplied to the power generation device via the buffer mechanism 3.

Then, in both the present embodiment and the modified example, the buffer mechanism 3 is provided between the aqueous solution storage unit 10 and the power generation device (not shown), and stores the hydrogen generated in the aqueous solution storage unit 10. You will be able to do it.

Even in the case of the modification of the buffer mechanism 3, the buffer mechanism 3 connects the pressure measuring device 87 (for example, a digital manostar gauge) for measuring the pressure in the buffer tank 80, the buffer tank 80, and the emergency exhaust line 50. It is preferable that the connection line 88 (also referred to as a connection pipe) to be connected and an electromagnetic valve 89 provided on the connection line 88 to control the presence or absence of emergency exhaust are provided, and are provided on the hydrogen supply unit 70. A booster 82 may be provided on the hydrogen supply unit 70 between the electromagnetic valve 83 and the electromagnetic valve 71.

Further, since it is considered that the control of the buffer mechanism 3 is simpler to be performed by the control unit of the hydrogen generator 2, the hydrogen generator 2 includes the buffer mechanism 3 and the hydrogen generator 2 includes the buffer mechanism 3. It may include a hydrogen supply unit 70 up to a position required in relation to the above.

Next, the operation and the like of the power generation system 1 having the above configuration will be described.
However, since the explanations so far have given a sufficient understanding of the detailed operations, only the main operations will be described.
Further, in the following, it is assumed that the buffer tank 80 is already filled with hydrogen.

For example, when a request (command) for hydrogen supply arrives from a power generation device (not shown) to the hydrogen generator 2, the control unit of the hydrogen generator 2 confirms the pressure in the upper space US of the aqueous solution storage unit 10, and the upper space US If the pressure inside is around the predetermined first pressure (required primary pressure), the electromagnetic valve 71 and the electromagnetic valve 73 are opened to start supplying hydrogen to the power generation device and the hydrogen. The drive of the raw material supply mechanism 30 is controlled so as to keep the pressure in the upper space US of the aqueous solution storage portion 10 which is reduced by the supply of hydrogen at a predetermined first pressure (obtained primary pressure).

On the other hand, when the control unit of the hydrogen generator 2 confirms the pressure in the upper space US of the aqueous solution storage unit 10 and the pressure in the upper space US is too low, the electromagnetic valve 85 is opened and the inside of the buffer tank 80 is opened. The drive of the raw material supply mechanism 30 is controlled so that hydrogen is supplied to a power generation device (not shown) and the pressure in the upper space US of the aqueous solution storage unit 10 becomes a predetermined first pressure (desired primary pressure). To do.

In the case of the present embodiment, since the raw material 21 is supplied to the large amount of the aqueous solution 11 stored in the aqueous solution storage portion 10, a by-product such as magnesium hydroxide is produced by the reaction between the raw material 21 and the aqueous solution 11. Even so, since the by-product rapidly diffuses into the aqueous solution 11, the reaction proceeds efficiently and quickly without hindering the reaction, so that the pressure in the upper space US of the aqueous solution storage portion 10 is reduced for a short time. Can be set to a predetermined first pressure (required primary pressure).

Then, the control unit of the hydrogen generator 2 opens the solenoid valve 71 and the solenoid valve 73 when the pressure in the upper space US of the aqueous solution storage unit 10 reaches a predetermined first pressure (required primary pressure), and at the same time, The solenoid valve 85 is closed, and the supply of hydrogen to the power generation device (not shown) is switched from the buffer tank 80 to the aqueous solution storage unit 10.

As described above, in the present embodiment, since the reaction efficiency between the raw material 21 and the aqueous solution 11 is good, the pressure in the upper space US of the aqueous solution storage portion 10 due to the supply of hydrogen to the power generation device (not shown) is reduced. It is easy to control for suppression.

Further, since the raw material 21 is supplied to the sufficiently prepared aqueous solution 11, its high reaction efficiency can be continuously maintained.

On the other hand, when the control unit of the hydrogen generator 2 is in a state of supplying hydrogen from the aqueous solution storage unit 10 to a power generation device (not shown), the pressure in the upper space US of the aqueous solution storage unit 10 is suitable for supplying hydrogen for some reason. When the pressure is likely to drop to no pressure, the pressure in the upper space US of the aqueous solution storage portion 10 is closed again by closing the electromagnetic valve 71 and opening the electromagnetic valve 85 without stopping the supply of hydrogen to the power generation device. To restore.

Then, when the control unit of the hydrogen generator 2 receives a request (command) for stopping the supply of hydrogen from a power generation device (not shown), the control unit confirms the pressure in the buffer tank 80 before stopping the operation of the hydrogen generator 2. If the buffer tank 80 needs to be filled with hydrogen, the buffer tank 80 is filled and then the operation of the hydrogen generator 2 is stopped.
On the other hand, when the buffer tank 80 does not need to be filled with hydrogen, the control unit of the hydrogen generator 2 performs a process of stopping the operation of the hydrogen generator 2 without filling the buffer tank 80.

In the present embodiment, by providing the buffer mechanism 3, the speed of hydrogen supply at the start of hydrogen supply to the power generation device (not shown) and the stability of the hydrogen supply amount during hydrogen supply are further improved. It has become a thing.

However, as described above, in the present embodiment, by supplying the raw material 21 toward the large amount of the aqueous solution 11 stored in the aqueous solution storage unit 10, the reaction efficiency between the raw material 21 and the aqueous solution 11 becomes high. Therefore, it is easy to quickly generate the required amount of hydrogen at the start of hydrogen supply to the power generation device (not shown), and the controllability of the hydrogen supply amount during hydrogen supply is also high, so that the buffer is used. It is not an essential requirement to provide the mechanism 3, and the buffer mechanism 3 may be omitted.
Further, in order to make the reaction efficiency between the raw material 21 and the aqueous solution 11 high, the hydrogen generator 2 raises the temperature of the aqueous solution 11 (for example, the aqueous solution 11 is within a temperature range in which the aqueous solution 11 does not boil. It may be provided with a temperature control means) for heating.

(Second Embodiment)
Next, the power generation system 1 of the second embodiment will be described with reference to FIG.
FIG. 2 is a cross-sectional view for explaining the power generation system 1 of the second embodiment according to the present invention.

In the first embodiment, a turbine generator in which a power generation device (not shown) drives a turbine using hydrogen as fuel is assumed.

On the other hand, in the second embodiment, it is assumed that the power generation device (not shown) is a general fuel cell, and a configuration suitable for using a fuel cell as the power generation device is added to the configuration of the first embodiment. It has become something that has been done.

Therefore, since the basic configuration of the power generation system 1 of the second embodiment is the same as that of the first embodiment, mainly different points will be described below, and the same points may be omitted. ..

As shown in FIG. 2, in the power generation system 1 of the second embodiment, in addition to the configuration of the first embodiment, an aqueous solution is provided from the pressure reducing valve 72 to the buffer mechanism 3 (more specifically, the lead-in branch line 81). A purification mechanism 4 for increasing the purity of hydrogen supplied from the storage unit 10 to a power generation device (and a buffer mechanism 3) (not shown) is provided.

Since it is considered that the control of the purification mechanism 4 is simpler to be performed by the control unit of the hydrogen generator 2, the hydrogen generator 2 may include the purification mechanism 4.

The purification mechanism 4 includes a first dehydration section 91A (for example, a molecular sieve) provided on the hydrogen supply section 70 between the pressure reducing valve 72 and the lead-in branch line 81, and a lead-in branch line 81 side of the first dehydration section 91A. A first impurity gas removing section 92A provided on the hydrogen supply section 70, and a first upstream solenoid valve 93A provided on the hydrogen supply section 70 between the pressure reducing valve 72 and the first dehydration section 91A. A first downstream solenoid valve 94A provided on the hydrogen supply unit 70 between the first impurity gas removing unit 92A and the lead-in branch line 81 is provided.

The first dehydration unit 91A and the first impurity gas removal unit 92A function as the first purification unit of the purification mechanism 4.
Further, as mentioned in the first embodiment, since the buffer mechanism 3 can be omitted, in this case, the lead-in branch line 81 and the solenoid valve 73 are unnecessary.

Therefore, when the buffer mechanism 3 is omitted, the purification mechanism 4 is provided on the hydrogen supply unit 70 between the pressure reducing valve 72 and the power generation device (not shown) than the pressure reducing valve 72. For example, between the molecular sieve), the first impurity gas removing section 92A provided on the hydrogen supply section 70 on the power generation device side (not shown) side of the first dehydration section 91A, and the pressure reducing valve 72 and the first dehydration section 91A. The first upstream solenoid valve 93A provided on the hydrogen supply unit 70 of the above, and the first downstream solenoid valve 94A provided on the hydrogen supply unit 70 between the first impurity gas removing unit 92A and the power generation device (not shown). And will be provided.

For example, in the present embodiment, a silica gel-based molecular sieve capable of drying treatment is used by supplying a heated gas having a low dew point at a low temperature (for example, about 100 ° C. or lower) to the first dehydration unit 91A.

Therefore, in the present embodiment, the purification mechanism 4 supplies a dry gas (for example, a low-activity gas such as nitrogen having a low dew point or an inert gas such as helium or argon having a low dew point) to the first dehydration section 91A. A dry gas supply line 95 (also a dry gas supply pipe) having a first supply control solenoid valve 95A for controlling the presence or absence and connected to a hydrogen supply unit 70 between the first dehydration unit 91A and the first impurity gas removal unit 92A. It has a first exhaust control solenoid valve 96A that is opened when the dry gas is exhausted, and is connected to a hydrogen supply section 70 between the first upstream solenoid valve 93A and the first dehydration section 91A. A dry gas exhaust line 96 (also referred to as a dry gas exhaust pipe) is provided, and as will be described later, even if the first dehydration section 91A once absorbs water, the first dehydration section 91A is dried. By doing so, the water absorption performance can be regenerated.
The dry gas is slightly heated by a heating device (not shown), and is supplied at a temperature higher than room temperature (for example, 25 ° C.) (for example, 50 ° C. or higher) and at a temperature of 100 ° C. or lower.

Further, in the present embodiment, when magnesium chloride is used as the material for producing the raw material 21 in the first impurity gas removing unit 92A, for example, when the raw material 21 is produced, the raw material is in an unreacted state. A chemical filter capable of removing impurity gases (for example, chlorine gas, hydrochloric acid gas, etc.) generated in relation to chlorine in magnesium chloride remaining in 21 is used.
In the present embodiment, the filter for removing chlorine gas and the filter for removing hydrochloric acid gas are arranged in series as the first impurity gas removing unit 92A.

However, since the first impurity gas removing unit 92A aims to remove the impurity gas generated when hydrogen is generated in the aqueous solution storage unit 10, what kind of chemical filter is used depends on the raw material 21. It is selected according to the aqueous solution 11 and the aqueous solution 11.

On the other hand, in the present embodiment, one end of the purification mechanism 4 is connected to the hydrogen supply unit 70 between the pressure reducing valve 72 and the first upstream solenoid valve 93A, and the other end is retracted with the first downstream solenoid valve 94A. A detour line 70A (also referred to as a detour pipe) connected to the hydrogen supply unit 70 between the branch lines 81 is provided.

As mentioned earlier, since the buffer mechanism 3 can be omitted, in this case, the lead-in branch line 81 and the solenoid valve 73 are unnecessary, so that the other end of the bypass line 70A is on the first downstream side. It is connected to the hydrogen supply unit 70 on the power generation device side, which is not shown, than the solenoid valve 94A.

The purification mechanism 4 is provided on a second dehydration section 91B (for example, a molecular sieve) provided on the bypass line 70A and a bypass line 70A on the power generation device side (not shown) on the second dehydration section 91B. The second upstream of the second impurity gas removing section 92B and the second upstream provided on the bypass line 70A on the pressure reducing valve 72 side of the second dehydration section 91B (on the bypass line 70A on one end side of the bypass line 70A from the second dehydration section 91B). The side solenoid valve 93B and the second impurity gas removing unit 92B are provided on the detour line 70A on the power generation device side (on the detour line 70A on the other end side of the detour line 70A from the second impurity gas removing unit 92B). It is provided with a second downstream solenoid valve 94B.

The second dehydration section 91B and the second impurity gas removal section 92B function as the second purification section of the purification mechanism 4 which plays the same role as the first purification section, and the second dehydration section 91B has the first dehydration section. Similar to Part 91A, a silica gel-based molecular sieve capable of drying treatment by supplying a heated gas having a low dew point at a low temperature (for example, about 100 ° C. or lower) is used.

Similarly to the first impurity gas removing section 92A, the second impurity gas removing section 92B also uses a chemical filter capable of removing chlorine gas, hydrochloric acid gas, etc., and even in a specific configuration, a filter that removes chlorine gas. And filters that remove hydrochloric acid gas are arranged in series.

Then, the dry gas supply line 95 is connected to the detour line 70A between the second dehydration section 91B and the second impurity gas removal section 92B, and the dry gas exhaust line 96 is connected to the second upstream electromagnetic valve 93B and the second dehydration. It is connected to the detour line 70A between the parts 91B, and the purification mechanism 4 is provided on the dry gas supply line 95 on the detour line 70A side of the first supply control electromagnetic valve 95A, and the dry gas (for example, nitrogen having a low dew point) is provided. A second supply control electromagnetic valve 95B that controls whether or not a low-activity gas or an inert gas such as helium or argon having a low dew point is supplied to the second dehydration section 91B, and a first exhaust control of the dry gas exhaust line 96. A second exhaust control electromagnetic valve 96B, which is provided on the dry gas exhaust line 96 on the bypass line 70A side of the electromagnetic valve 96A and is opened when the dry gas is exhausted, is provided.

The dry gas is supplied to the dry gas supply line 95 at the position of the dry gas supply line 95 between the first supply control solenoid valve 95A and the second supply control solenoid valve 95B. The exhaust of the dry gas from the gas exhaust line 96 is performed at the position of the dry gas exhaust line 96 between the first exhaust control solenoid valve 96A and the second exhaust control solenoid valve 96B.

Therefore, even in the second dehydration section 91B, even if the second dehydration section 91B once absorbs water, the moisture absorption performance can be regenerated by performing the drying treatment of the second dehydration section 91B.

Next, the operation of the purification mechanism 4 will be described.
The explanation of this operation is performed on the premise that hydrogen is being supplied from the aqueous solution storage unit 10 to the power generation device or the buffer tank 80 (not shown), and the hydrogen supply start described in the first embodiment is started. The explanation of the time etc. shall be omitted.

For example, the control unit of the hydrogen generator 2 opens the first upstream solenoid valve 93A and the first downstream solenoid valve 94A, and opens the second upstream solenoid valve 93B, the second downstream solenoid valve 94B, and the first supply control. A power generation device (not shown) in which hydrogen passes through the first purification unit (first dehydration unit 91A and first impurity gas removal unit 92A) of the purification mechanism 4 with the solenoid valve 95A and the first exhaust control solenoid valve 96A closed. The second supply control solenoid valve 95B and the second exhaust control solenoid valve 96B are also controlled to be opened so that the dry gas passes through the second dehydration section 91B. ..

Therefore, while the first dehydration section 91A is operating to absorb the water in the hydrogen, the second dehydration section 91B is dried, and the ability of the second dehydration section 91B to absorb the water is regenerated. To.

On the other hand, when a predetermined amount of hydrogen passes through the first dehydration section 91A, the control unit of the hydrogen generator 2 opens the second upstream solenoid valve 93B and the second downstream solenoid valve 94B, and opens the first upstream solenoid valve 94B. The side solenoid valve 93A, the first downstream solenoid valve 94A, the second supply control solenoid valve 95B, and the second exhaust control solenoid valve 96B are closed, and the hydrogen purifies the second purification part (second dehydration part 91B) of the purification mechanism 4. And the control is switched so that the dry gas passes through the second impurity gas removing unit 92B) and is supplied to the power generation device (not shown). At this time, the control of the hydrogen generator 2 is performed so that the dry gas passes through the first dehydration unit 91A. The unit also controls to open the first supply control solenoid valve 95A and the first exhaust control solenoid valve 96A.

Therefore, while the second dehydration section 91B is operating to absorb the water in the hydrogen, the first dehydration section 91A is dried, and the ability of the first dehydration section 91A to absorb the water is regenerated. To.

As described above, the purification mechanism 4 includes the first purification unit (first dehydration unit 91A and first impurity gas removal unit 92A) and the second purification unit (second dehydration unit 91B and second impurity gas removal unit 92B). , And when hydrogen is supplied to a power generation device or a buffer tank 80 (not shown) through the first purification unit, the second dehydration unit 91B of the second purification unit can be dried and processed, and the second purification unit can be dried. Since the first dehydration unit 91A of the first purification unit can be dried when the hydrogen is supplied to the power generation device or buffer tank 80 (not shown), the hydrogen is supplied to the power generation device or buffer tank 80 (not shown). The first dehydration section 91A and the second dehydration section 91B can be regenerated without stopping the supply of the gas.

Further, if necessary, when hydrogen is supplied to a power generation device or a buffer tank 80 (not shown) by passing through the first purification unit, the second impurity gas removal unit 92B of the second purification unit is replaced, and the second purification unit is replaced. Since it is possible to replace the first impurity gas removing section 92A of the first purification section when hydrogen is supplied to a power generation device or a buffer tank 80 (not shown), the first impurity gas removing section 92A and the first impurity gas removing section 92A and The replacement work of the second impurity gas removing unit 92B can also be performed without stopping the supply of hydrogen to the power generation device or the buffer tank 80 (not shown).

Since the purification mechanism 4 is provided between the aqueous solution storage unit 10 and the power generation device and the buffer mechanism 3 (not shown), it is possible to supply high-purity hydrogen to the fuel cell which is the power generation device. it can.

Although the present invention has been described above based on the specific embodiments, the present invention is not limited to the above-mentioned specific embodiments, and the present invention may be appropriately modified or improved. It is included in the technical scope of the above, which is clear to those skilled in the art from the description of the scope of claims.

1 Power generation system 2 Hydrogen generator 3 Buffer mechanism 4 Purification mechanism 10 Aqueous storage part 11 Aqueous solution 12 Upper level sensor 13 Lower level sensor 14 Partition 14A Through hole 15 Drain port 15A Drain line 15B Drain control valve 16 Water supply port 16A Water supply line 16B Water supply control valve 17 Raw material receiving hole 18 Hydrogen discharge port 20 Raw material storage 21 Raw material 22 Work door 23 Raw material supply hole 24 Distance measuring device 30 Raw material supply mechanism 31 Motor 32 Disc 32A, 32B Through hole 33 Shaft 40 Stirring mechanism 41 Motor 42 Propeller 43 Shaft 50 Emergency exhaust line 51 Solenoid valve 52 Pressure measuring device 61 Pressure measuring device 62 Gas supply line 63 Electromagnetic valve 70 Hydrogen supply unit 70A Bypass line 71 Solenoid valve 72 Solenoid valve 73 Solenoid valve 80 Buffer tank 81 Pull-in branch line 82 Booster 83 Solenoid valve 84 Return line 85 Solenoid valve 86 Pressure reducing valve 87 Pressure measuring device 88 Connection line 89 Solenoid valve 91A 1st dehydration unit 91B 2nd dehydration unit 92A 1st impurity gas removal unit 92B 2nd impurity gas removal unit 93A 1 Upstream solenoid valve 93B 2nd upstream solenoid valve 94A 1st downstream solenoid valve 94B 2nd downstream solenoid valve 95 Dry gas supply line 95A 1st supply control solenoid valve 95B 2nd supply control solenoid valve 96 Dry gas exhaust line 96A 1st exhaust control solenoid valve 96B 2nd exhaust control solenoid valve LS Lower space LSF Water surface O Rotation center US Upper space US1 Upper space

Claims (8)

A power generation system that uses hydrogen
The power generation system
Power generator and
A hydrogen generator that generates the hydrogen to be supplied to the power generation device is provided.
The hydrogen generator
An aqueous solution storage unit that stores the aqueous solution and
A raw material storage unit that stores a raw material containing magnesium in a state in which hydrogen can be generated by reaction with the aqueous solution, and a raw material storage unit.
A raw material supply mechanism for supplying the raw material from the raw material storage unit to the aqueous solution storage unit is provided.
The aqueous solution storage unit
The upper space above the aqueous solution in which the aqueous solution does not exist,
The lower space in which the aqueous solution exists, which is below the upper space, and
A partition portion that divides the lower space into upper and lower parts is provided.
The partition portion is a power generation system including a plurality of through holes provided so that by-products produced by the reaction of the raw material and the aqueous solution can be precipitated below the partition portion. The aqueous solution storage unit
A drainage port provided below the partition for draining the aqueous solution,
It is provided above the partition and is provided with a water supply port for supplying the aqueous solution.
The hydrogen generator
A drainage control valve that controls the drainage of the aqueous solution from the drainage port,
A water supply control valve that controls the supply of the aqueous solution from the water supply port, and
The power generation system according to claim 1, further comprising a drainage control valve and a control unit that controls the water supply control valve based on the supply amount of the raw material supplied toward the aqueous solution. The raw material supply mechanism is provided so as to supply the raw material from the upper space side toward the aqueous solution.
The hydrogen generator
A pressure measuring device for measuring the pressure in the upper space and
Claim 1 is characterized in that it includes a control unit that drives the raw material supply mechanism and controls the supply amount of the raw material to be supplied toward the aqueous solution based on the pressure measurement result of the pressure measuring device. Alternatively, the power generation system according to claim 2. A power generation system that uses hydrogen
The power generation system
Power generator and
A hydrogen generator that generates the hydrogen to be supplied to the power generation device is provided.
The hydrogen generator
An aqueous solution storage unit that stores the aqueous solution and
A raw material storage unit that stores a raw material containing magnesium in a state in which hydrogen can be generated by reaction with the aqueous solution, and a raw material storage unit.
A raw material supply mechanism for supplying the raw material from the raw material storage unit to the aqueous solution storage unit is provided.
Further, the power generation system
A buffer mechanism in which the hydrogen is provided between the aqueous solution storage unit and the power generation device and can store the hydrogen generated in the aqueous solution storage unit.
A purification mechanism provided between the hydrogen storage unit, the power generation device, and the buffer mechanism is provided.
The purification mechanism is
A first purification unit having a first dehydration unit and a first impurity gas removal unit,
A second purification unit having a second dehydration unit and a second impurity gas removal unit is provided.
When the hydrogen is supplied to the power generation device or the buffer mechanism by passing through the first purification section, the second dehydration section of the second purification section can be dried and passed through the second purification section. When the hydrogen is supplied to the power generation device or the buffer mechanism, the first dehydration section of the first purification section can be dried .
The aqueous solution storage unit includes an upper space above the aqueous solution in which the aqueous solution does not exist.
The raw material supply mechanism is provided so as to supply the raw material from the upper space side toward the aqueous solution.
The hydrogen generator
A pressure measuring device for measuring the pressure in the upper space and
A power generation system including a control unit that drives the raw material supply mechanism and controls the supply amount of the raw material to be supplied toward the aqueous solution based on the pressure measurement result of the pressure measuring device. A power generation system that uses hydrogen
The power generation system
Power generator and
A hydrogen generator that generates the hydrogen to be supplied to the power generation device is provided.
The hydrogen generator
An aqueous solution storage unit that stores the aqueous solution and
A raw material storage unit that stores a raw material containing magnesium in a state in which hydrogen can be generated by reaction with the aqueous solution, and a raw material storage unit.
A raw material supply mechanism for supplying the raw material from the raw material storage unit to the aqueous solution storage unit is provided.
Further, the power generation system includes a purification mechanism provided between the hydrogen storage unit and the power generation device.
The purification mechanism is
A first purification unit having a first dehydration unit and a first impurity gas removal unit,
A second purification unit having a second dehydration unit and a second impurity gas removal unit is provided.
When the hydrogen is supplied to the power generation device by passing through the first purification section, the second dehydration section of the second purification section can be dried, and the hydrogen is passed through the second purification section. When the power generation device is supplied, the first dehydration section of the first purification section can be dried .
The aqueous solution storage unit includes an upper space above the aqueous solution in which the aqueous solution does not exist.
The raw material supply mechanism is provided so as to supply the raw material from the upper space side toward the aqueous solution.
The hydrogen generator
A pressure measuring device for measuring the pressure in the upper space and
A power generation system including a control unit that drives the raw material supply mechanism and controls the supply amount of the raw material to be supplied toward the aqueous solution based on the pressure measurement result of the pressure measuring device. It ’s a hydrogen generator,
The hydrogen generator
An aqueous solution storage unit that stores the aqueous solution and
A raw material storage unit that stores a raw material containing magnesium in a state where hydrogen can be generated by reaction with the aqueous solution, and a raw material storage unit.
A raw material supply mechanism for supplying the raw material from the raw material storage unit to the aqueous solution storage unit is provided.
The aqueous solution storage unit
The upper space above the aqueous solution in which the aqueous solution does not exist,
The lower space in which the aqueous solution exists, which is below the upper space, and
A partition portion that divides the lower space into upper and lower parts is provided.
The partition portion is a hydrogen generator including a plurality of through holes provided so that by-products produced by the reaction of the raw material and the aqueous solution can be precipitated below the partition portion. The raw material supply mechanism is provided so as to supply the raw material from the upper space side toward the aqueous solution.
The hydrogen generator
A pressure measuring device for measuring the pressure in the upper space and
6. A claim 6 comprising a control unit that drives the raw material supply mechanism and controls the supply amount of the raw material to be supplied toward the aqueous solution based on the pressure measurement result of the pressure measuring device. The hydrogen generator according to. The aqueous solution storage unit
A drainage port provided below the partition for draining the aqueous solution,
It is provided above the partition and is provided with a water supply port for supplying the aqueous solution.
The hydrogen generator
A drainage control valve that controls the amount of drainage of the aqueous solution drained from the drainage port,
A water supply control valve that controls the amount of water supplied from the aqueous solution supplied from the water supply port, and
The hydrogen generator according to claim 6 , further comprising a drainage control valve and a control unit for controlling the water supply control valve based on the amount of the raw material supplied toward the aqueous solution. ..

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