JP2000351604A - Hydrogen supply system for hydrogen fueled equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To quickly start the operation of a fuel cell and to reliably continue the operation, so that the problems of the reformer do not affect the hydrogen supply. Provide a hydrogen supply system. SOLUTION: A hydrogen supply system 1 includes a reformer 3 that generates hydrogen from a raw material such as alcohol and gasoline, and stores the hydrogen generated by the reformer 3, and then releases the stored hydrogen to generate hydrogen. And a hydrogen storage 15 for supplying the fuel cell 2 as fuel. Hydrogen reservoir 15 has hydrogen as first storage unit 15 ₁ easily occludes, a second reservoir 15 ₂ is easy to release hydrogen. Temporarily occluded hydrogen from the reformer 3 in the first storage section 15 _1, by keeping the release of hydrogen from the first storage unit 15 ₁ that is occluded in the second storage unit 15 _2, the operation of the fuel cell 2 performed starting with release of hydrogen from the second storage unit 15 ₂ performs the continuous operation of the subsequent fuel cell 2 with a release hydrogen from the first storage unit 15 _1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for supplying hydrogen to equipment using hydrogen as a fuel, and more particularly to a method for producing hydrogen from a raw material such as alcohol or gasoline to supply hydrogen to equipment using hydrogen as a fuel. Hydrogen supply system.

[0002]

2. Description of the Related Art Conventionally, this kind of hydrogen supply system is provided with a reformer for producing hydrogen.

[0003]

However, the current reformer takes a long time to start, and therefore, in an electric vehicle powered by a fuel cell as the device, the reformer starts immediately even if the start switch is turned on. And the response to the demand for increased hydrogen production is slow,
Therefore, the electric vehicle has a problem that its acceleration is poor.

[0004]

SUMMARY OF THE INVENTION The present invention comprises a hydrogen storage device, and supplies only hydrogen released from the hydrogen storage device to the equipment. It is an object of the present invention to provide the hydrogen supply system that has no influence.

[0005] To achieve the above object, according to the present invention,
Alcohol, a reformer that generates hydrogen from a raw material such as gasoline, and occludes the hydrogen generated by the reformer, and then releases the occluded hydrogen to supply it to equipment using hydrogen as a fuel A hydrogen storage device, wherein the hydrogen storage device has a first storage portion provided with a first hydrogen storage material and a second storage portion provided with a second hydrogen storage material. In the material, the first hydrogen storage material is superior to the second hydrogen storage material in terms of ease of storing hydrogen, while the second hydrogen storage material is superior in terms of ease of releasing stored hydrogen. The material is superior to the first hydrogen storage material, and the first storage unit temporarily stores hydrogen from the reformer, and the hydrogen released from the first storage unit is stored in the second storage unit. By storing the occlusion, the operation of the device can be started and the hydrogen released from the second storage unit Performed, performs continued operation of subsequent said apparatus with a release hydrogen from the first storage unit, a hydrogen supply system is provided to the equipment using hydrogen as fuel.

For example, the reformer is operated while the equipment is at rest, and the hydrogen generated in the reformer is stored in the first storage unit. This hydrogen storage is performed smoothly and sufficiently because the first hydrogen storage material has the property of easily storing hydrogen.

In the transfer of hydrogen from the first storage unit to the second storage unit, the release of the stored hydrogen from the first storage unit is performed in consideration of the fact that the first hydrogen storage material has a property of hardly releasing hydrogen. This is performed by increasing the temperature of the first hydrogen storage material by heating, whereby high-pressure released hydrogen is obtained. The second hydrogen storage material in the second storage unit has a property of hardly storing hydrogen, but the released hydrogen from the first storage unit is at a high pressure and is sufficiently stored in the second storage unit.

[0008] When the operation of the equipment is started, hydrogen is released from the second storage unit and supplied to the equipment. The supply of the released hydrogen is performed until the reformer started at the same time as the operation start of the apparatus reaches a steady state. The release of hydrogen from the second storage unit is performed quickly and sufficiently because the second hydrogen storage material has a property of easily releasing hydrogen.

[0009] Since the subsequent operation of the equipment is performed using the hydrogen released from the first storage unit, when the required hydrogen amount of the equipment increases, the amount of hydrogen released from the first storage unit is increased. When the amount decreases, the amount of hydrogen released from the first storage unit is reduced.

Therefore, according to this hydrogen supply system, it is possible to prevent the problems such as the response delay of the reformer from affecting the hydrogen supply to the equipment.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A hydrogen supply system 1 shown in FIG.
Is mounted on an electric vehicle powered by a fuel cell 2 as a device using hydrogen as a fuel.

In the hydrogen supply system 1, the reformer 3
Generates hydrogen from raw materials such as alcohol and gasoline. The first, second humidistat 4 _1, 4 ₂ those having a humidifying function and a dehumidifying function, their one end first communication port on the side 5 ₁ and the other end second communication port on the side 5 ₂ Have each. Both the first communication port 5 ₁ between is connected via a conduit 6, its conduit 6, first towards from the first humidistat 5 ₁ side to the second humidistat 5 ₂ side, the second, third the three-way valve 3V _1, 3V _2, 3V ₃
Is installed. First of them, the second port p1, p2 are respectively connected to the first humidistat 5 ₁ side and the second humidistat 5 ₂ side of the conduit 6. Inlet 8 of the reformer 3 is connected via a conduit 7 to the third port p3 of the second three-way valve 3V _2. The first, third port p3 of the third three-way valve 3V _1, 3V ₃ first fourth three-way valve 3V ₄ via conduit 9 and 10, respectively connected to the second port p1, p2, the fourth Three-way valve 3
The third port p3 of V ₄ is connected to the inlet 12 of the fuel cell 2 via a conduit 11. Outlet 13 of the fuel cell 2 is connected to the reformer 3 a combustion system through the first exhaust pipe 14 _1, thereby being combustible components in the exhaust gas of the fuel cell 2 is burned,
The generated heat is used for a reforming reaction in the reformer 3.

[0013] The first, second humidistat 4 _1, 4 ₂ in both the second communication port 5 ₂ between are connected via a conduit 16, the conduit 16
The fifth, sixth, seventh three-way valve 3V _5, 3V _6, 3V ₇ is device towards from the first humidistat 4 ₁ side to the second humidistat 4 ₂ side. The first and second ports p1 and p2 are connected to the conduit 16
It is first humidistat 4 ₁ side and each of the second humidistat 4 ₂ side of the connection, and the third port p3 of the sixth three-way valve 3V ₆ is connected to the inlet side of the hydrogen reservoir 15.

The hydrogen storage 15 is generated by the reformer 3.
The first or second humidity controller 4 ₁, 4_TwoSupply via
And occlude it and release the stored hydrogen to the first
Or the second humidity controller 4₁, 4_TwoTo fuel cell 2 via
can do. The hydrogen storage 15 stores the first hydrogen
Storage material MH₁1st storage part 15 provided with₁And the second hydrogen
Storage material MH_TwoSecond storage unit 15 having_TwoAnd No.
1, the second hydrogen storage material MH₁, MH_TwoAs hydrogen storage
An alloy or a carbon material is used. First hydrogen storage material MH
₁The temperature indicating the plateau region of the second hydrogen storage material MH_Two
And therefore relatively high from reformer 3
Regarding the ease of storing hot hydrogen, the first hydrogen storage material MH
₁Is the second hydrogen storage material MH_TwoIs better than
Regarding the ease of release of stored hydrogen under temperature, the second hydrogen absorption
Storage material MH_TwoIs the first hydrogen storage material MH₁Better than
You. That is, both hydrogen storage materials MH₁, MH_TwoAt the water
Regarding element storage characteristics, the first temperature and pressure
Hydrogen storage material MH₁Is the second hydrogen storage material MH_TwoCompared to
Equilibrium pressure for hydrogen storage is low, while hydrogen release characteristics
Is the second hydrogen storage material MH at the same temperature and the same pressure._Two
Is the first hydrogen storage material MH₁The equilibrium pressure of hydrogen release is
It is expensive. In the embodiment, the first hydrogen storage material MH is used.₁Is A
B5 series alloy, for example, MmNi_4.9Al_0.1More than alloy
And the second hydrogen storage material MH_TwoIs an AB5-based alloy, for example
MmNi_4.77Al_0.23Made of alloy. Each chemical formula
Mm means lanthanum-based misch metal.

First storage unit 15₁Is the first hydrogen storage material M
H₁At least three, in the illustrated example, three first
~ Third tank T₁~ T_ThreeAnd the tank T₁~ T
_ThreeInlets 17 are interconnected by conduits 18
The branch 19 of the pipe 18 is connected via another conduit 20 to a sixth three-way valve.
3V₆To the third port p3. Smell in conduit 18
And each tank T₁~ T_ThreeBetween the entrance 17 and the branch 19
First, second, third two-way valve 2V₁, 2V_Two, 2V_ThreeBut
Each is installed. First to third tanks T₁~ T _ThreeExit
21 are interconnected by a conduit 22,
The collecting part 23 is the second discharge pipe 14_TwoThrough the first discharge pipe 14
₁Connected to the downstream side. In conduit 22, each tank
T₁~ T_ThreeBetween the outlet 21 and the collecting part 23 of the
9, 10th three-way valve 3V₈, 3V₉, 3V_TenAre individually
Is placed. Those three-way valves 3V₈, 3V₉, 3V_TenNo.
The first and second ports p1 and p2 are the first to third tanks of the conduit 22.
K T₁~ T_ThreeSide and the collecting section 23 side, respectively.
You. 8th 3-way valve 3V₈Through the conduit 24
And the 11th three-way valve 3V₁₁Connected to the first port p1 of
9th three-way valve 3V₉And 10th three-way valve 3V_TenThe third
The port p3 is connected to the twelfth three-way valve 3V via the conduits 25 and 26.
₁₂Connected to the first and second ports p1 and p2, respectively.
You. The 12th three-way valve 3V₁₂The third port p3 of the conduit 2
11th three-way valve 3V through 7₁₁Connected to the second port p2
Is done.

The second storage section 15 ₂ is provided with a second hydrogen storage material MH.
₂ at least one with a built-in comprises one of the fourth tank T ₄ in the illustrated example. Conduit 2 to the fourth tank T ₄ of the inlet 17
The first port p1 of a 13 three-way valve 3V ₁₃ is connected via the 9, its second port p2 is connected to the third port p3 of the 11 three-way valve 3V ₁₁ via a conduit 30. A fourth two-way valve 2V ₄ is connected to the outlet 21 of the fourth tank T ₄ via a conduit 32, and the first port p1 of the fourteenth three-way valve 3V ₁₄ is connected to the fourth two-way valve 2V ₄ via a conduit 33. Is connected. The third port p3 of the 13 three-way valve 3V ₁₃ is connected via conduit 34 to the conduit 33. 14th second port p2 of the three-way valve 3V ₁₄ is connected to the third port p3 of the fifth three-way valve 3V ₅ via conduit 35, and the third port p3 conduit 3
Through 6 are connected to the third port p3 of the seventh three-way valve 3V _7.

[0017] The first, second humidistat 4 _1, 4 ₂ in order to improve the first hydrogen absorbing of reservoir 15 _1, subjected to a dehumidifying processing hydrogen from the reformer 3 and the fuel cell 2 The released hydrogen is humidified in order to improve the power generation performance. in this case,
The water content of each of the first and second humidifiers 4 ₁ and 4 _{2 is} calculated as Cw
1, when the Cw2, for example, Cw1 <First humidistat 4 ₁ dehumidification process if Cw2, while the second humidistat 4 ₂
Are used for the humidification treatment, respectively.

As a result of such use, both water contents Cw1,
If the relationship of Cw2 is reversed and Cw1> Cw2, the first
Humidistat 4 ₁ after dehumidification function exhibit, become humidifying function capable of exhibiting state, while the second humidistat 4 ₂ after humidifying function exhibit, which was a dehumidification function capable of exhibiting state, this time the first humidistat 4 ₁ to the humidifying treatment, while the second humidistat 4 ₂ are used respectively in the dehumidifying process. Such use content is also possible by one of the humidistat, tone two humidifier 4 _1, 4 comprises _two, providing a difference in water content between them, the dehumidification and humidification We can respond appropriately. Molecular sieves may be used to perform the dehumidifying and humidifying effects as described above.

If necessary, both humidity controllers 4 ₁ and 4 ₂ may have a function of removing impure gas components such as carbon dioxide and oxygen contained in hydrogen from the reformer 3. In the figure,
V is a check valve.

(1) For example, in the next morning,
To ensure that the vehicle starts
The following hydrogen storage operation is performed while the operation of the fuel cell 2 is stopped.
I do. For convenience, before starting the operation, the hydrogen storage 15
First to fourth tanks T₁~ T _FourIs empty
And

[0021] (1) As shown in -a Figure 1, first, between the second humidistat 4 _1, 4 ₂ of both moisture content Cw1, Cw2 established relationship Cw1 ≒ Cw2, they It is assumed that the dehumidifying function can be exhibited. By the valve switching operation, the second
In a state in which the path to the inlet 17 of the fourth to fourth tanks T _{2 to} T ₄ is shut off, the reformer 3 → the second three-way valve 3V ₂ → the third three-way valve 3V ₃ → the second humidity controller 4 ₂ → the seventh. Three-way valve 3V ₇ → Sixth three-way valve 3V ₆ → First two-way valve 2V ₁ → First tank T ₁ → Eighth
The three-way valve 3V ₈ → establishing a second path of the discharge pipe 14 _2.
Then, the reformer 3 is operated, and the relatively high-temperature hydrogen generated in the reformer 3 is desorbed from the second dehumidification-processable second hydrogen.
Humidistat 4 ₂ via first occluding the first tank T ₁ of the reservoir 15 _1. This hydrogen storage is performed by the first hydrogen storage material MH ₁
Has the property of easily absorbing relatively high-temperature hydrogen from the reformer 3, and the hydrogen is subjected to a dehumidifying treatment, so that the hydrogen is smoothly and sufficiently performed. First hydrogen storage material MH
Excess hydrogen not occluded in ₁ is guided to the reformer 3 a combustion system through the second exhaust pipe 14 _2, where it is combusted, the heat generated is used for the reforming reaction in the reformer 3. Further, an impurity gas component such as carbon dioxide which is contained in hydrogen and is not occluded by the first hydrogen storage material MH ₁ is discharged to the second discharge pipe 8 through the outlet 21 of the first tank T ₁ , so that the first tank T _An increase in the concentration of the impurity gas component in ₁ is avoided. Storage of hydrogen into the first tank T ₁ is carried out until the tank T ₁ is a filling state (full state). Both water content C
The relationship between w1 and Cw2 is Cw1 ≒ Cw2 → Cw1 <Cw
It becomes 2.

[0022] (1) from the first tank T ₁ of the -b first storage unit 15 ₁ hitting the transfer of hydrogen into the second storage unit 15 ₂ of the fourth tank T _4, as shown in FIG. 2, the valve switching operation, the route and the route along with cutting off each of the fourth tank T ₄ of the outlet 21, the first tank T ₁ → eighth three-way valve 3V ₈ → 11 three sides to the first tank T ₁ of the inlet 17 to establish a path of the valve 3V ₁₁ → 13 three-way valve 3V ₁₃ → fourth tank T _4. The release of the stored hydrogen from the first tank T ₁ is as follows:
Taking into account the first release little aptitude the hydrogen in the hydrogen storage material MH ₁ at room temperature under, the first temperature of the hydrogen storage material MH ₁ done by increasing the 60 ° C. or higher by heating, thereby the high pressure Hydrogen released. The second hydrogen storage material MH ₂ in the fourth tank T ₄ is stored in the first tank T 4.
_Although it has the property that it is difficult to absorb the relatively high-temperature released hydrogen from the _first tank, the released hydrogen is also at a high pressure, so that the fourth tank T
₄ occluded enough. In this case, by burning hydrogen produced by the reformer 3, it is possible to heat the first hydrogen storage material MH ₁ by the combustion heat. After the fourth tank T ₄ becomes filled state blocked by Bensetsu換操operation the route to the inlet 17 (see FIG. 3).

Further, by the valve switching operation, the reformer 3 → the second three-way valve 3V ₂ → the first three-way valve 3V ₁ → the first humidity controller 4 ₁ → the fifth.
Three-way valve 3V ₅ → Sixth three-way valve 3V ₆ → Third two-way valve 2V ₃ →
Third tank T ₃ → Tenth three-way valve 3V ₁₀ → Second discharge pipe 14
Since ₂ paths are established, hydrogen produced in the reformer 3 are inserted in the third tank T ₃ after being subjected to dehumidifying treatment. After the third tank T ₃ has been filled, its inlet 1
The path to 7 and the path from the outlet 21 are shut off by a valve switching operation (see FIG. 3). The relationship between the two water contents Cw1 and Cw2 is Cw1 <Cw2 → Cw1 ≒ Cw2.

(2) When the electric vehicle starts running, that is, when the fuel cell 2 starts operating, the first and second humidity controllers 4
Cw1 ≒ C between the water content Cw1 and Cw2 of ₁ and 4 ₂
It is assumed that the relationship of w2 is established. As shown in FIG. 3, the fourth tank T ₄ → the fourth two-way valve 2V ₄ → the fourteenth three-way valve 3V ₁₄ → the seventh three-way valve 3V ₇ → the second by the valve switching operation.
The path of the humidity controller 4 ₂ → the third three-way valve 3V ₃ → the fourth three-way valve 3V ₄ → the fuel cell 2 is established. Thereby, the second storage unit 1
5 ₂ , that is, hydrogen is released from the fourth tank T ₄ and supplied to the fuel cell 2 after humidification. The supply of the released hydrogen is performed until the reformer 3 started simultaneously with the start of operation of the fuel cell 2 reaches a steady state. The electric vehicle runs with the operation of the fuel cell 2. The release of hydrogen from the fourth tank T ₄ is performed smoothly and sufficiently at about 25 ° C. because the second hydrogen storage material MH ₂ has a property of easily releasing hydrogen at room temperature. The relationship between the two water contents Cw1 and Cw2 is Cw1 ≒ Cw2 → Cw1> Cw2.

(3) When the reformer 3 reaches a steady state, the fourth tank T is operated by a valve switching operation as shown in FIG.
The path from the exit 21 of ₄ is cut off. And the third tank T ₃ → the tenth three-way valve 3V ₁₀ → the twelfth three-way valve 3V ₁₂ → the first
1 three-way valve 3V ₁₁ → 13 three-way valve 3V ₁₃ → 14 three-way valve 3
V ₁₄ → establishing a fifth three-way valve 3V ₅ → first humidistat 4 ₁ → first three-way valve 3V ₁ → fourth path of the three-way valve 3V ₄ → the fuel cell 2. Thus since the desorbed hydrogen from the third tank T ₃ is supplied to the fuel cell 2 after having been subjected to moistening the electric vehicle is traveling it is continued. When accelerating the electric vehicle, the third
The amount of hydrogen released is increased by widening the opening at the outlet 21 of the tank T ₃ , while at the time of deceleration, the outlet 2 of the third tank T ₃ is increased.
1, the amount of released hydrogen is reduced by narrowing the opening degree.

[0026] The reformer 3 → the second three-way valve 3V ₂ → the third three-way valve 3V ₃ → the second humidistat 4 ₂ → seventh three-way valve 3V ₇ → sixth
The three-way valve 3V ₆ → establishing a second two-way valve 2V ₂ → second tank T ₂ → 9 three-way valve 3V ₉ → the second path of the discharge pipe 14 _2. Thus the hydrogen from the reformer 3 are inserted into the second tank T ₂ after being subjected to dehumidifying treatment. Both water content Cw1, C
The relationship of w2 is Cw1> Cw2 → Cw1 <Cw2.

FIG. 5 shows the next driving stage after that of FIG.
At this stage, both the water content C of the first and second humidifiers 4 ₁ and 4 ₂
The relationship of Cw1 <Cw2 is established between w1 and Cw2,
The release of hydrogen from the second tank T ₂ , the humidification of the released hydrogen by the _second humidifier 42, and the supply of the released hydrogen after humidification to the fuel cell 2 are performed. production, storage of generated hydrogen after dehumidification in the dehumidifying processing and the first tank T ₁ of the the first humidistat 4 ₁ due to the production of hydrogen is taking place. Thus, the relationship between the two water contents Cw1 and Cw2 is Cw1 <Cw2 → Cw1> Cw2.

FIG. 6 shows the next driving stage after that of FIG.
At this stage, both the water content C of the first and second humidifiers 4 ₁ and 4 ₂
The relationship of Cw1> Cw2 is established between w1 and Cw2,
Release of hydrogen from the first tank T _1, the supply of desorbed hydrogen after humidification to humidification and the fuel cell 2 to the first humidistat 4 ₁ due to the release of hydrogen takes place, also of hydrogen by the reformer 3 production, storage of generated hydrogen after dehumidification in the second humidistat 4 ₂ dehumidifying processing and the third tank T ₃ to generate hydrogen by is performed. Thus, the relationship between the two water contents Cw1 and Cw2 is Cw1> Cw2 → Cw1 <Cw2.

[0029] In this way the first storage unit 15 _2,
While the operation of the fuel cell 2 is continued, the first to third tanks T _{1 to} T ₃
When one of the tanks T ₁ , T ₂ , T ₃ is in the hydrogen releasing state, another tank T ₃ , T ₁ , T ₂ is in the hydrogen absorbing state.

In the first and second storage sections 15 ₁ and 15 ₂ of the hydrogen storage device 15, the number of tanks may be increased as required, or the first and second storage sections may be used. Material MH
₁ and MH ₂ , so that their storages 15 ₁ , 15 ₂
To increase the hydrogen storage capacity (hydrogen storage capacity). In addition, examples of equipment using hydrogen as fuel include an internal combustion engine in addition to a fuel cell.

[0031]

According to the first aspect of the present invention, by employing the above means, it is possible to quickly start the operation of the equipment and to continue the operation without fail. It is possible to provide a hydrogen supply system in which the problems of the reformer do not affect the hydrogen supply.

According to the second aspect of the present invention, it is possible to provide a hydrogen supply system that can supply hydrogen to equipment without interruption and continue its operation reliably.

According to the third aspect of the present invention, by employing the above-described means, the hydrogen storage capacity of the hydrogen storage can be improved, and in particular, the power generation performance of the fuel cell as the device is improved. Capable of providing a hydrogen supply system capable of performing the above.

According to the fourth and fifth aspects of the present invention, it is possible to provide a hydrogen supply system capable of reliably performing humidification processing and dehumidification processing on hydrogen.

According to the sixth aspect of the present invention, by employing the above-described means, it is possible to quickly start the operation of the equipment and to continue the operation without fail. It is possible to provide a hydrogen supply system in which the problems of the vessel do not affect the hydrogen supply.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a hydrogen supply system showing a state in which hydrogen is stored in a first tank during suspension of operation of a fuel cell.

FIG. 2 is an explanatory diagram of a hydrogen supply system showing a state where hydrogen is transferred from a first tank to a fourth tank and hydrogen is stored in a third tank.

FIG. 3 is an explanatory diagram of a hydrogen supply system showing a state in which hydrogen is released from a fourth tank and supplied to the fuel cell when the fuel cell starts operating.

FIG. 4 is an explanatory diagram of a hydrogen supply system showing a state in which hydrogen is released from a third tank while the electric vehicle is running, and hydrogen is stored in a second tank.

FIG. 5 is an explanatory diagram of a hydrogen supply system showing a state in which hydrogen is released from a second tank and hydrogen is stored in a first tank while the electric vehicle is running.

FIG. 6 is an explanatory diagram of a hydrogen supply system showing a state in which hydrogen is released from a first tank and hydrogen is stored in a third tank while the electric vehicle is running.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 hydrogen supply system 2 fuel cell (equipment) 3 reformer 4 ₁ , 4 ₂ first and second humidifier 15 hydrogen storage 15 ₁ , 15 ₂ first and second storage unit Cw1, Cw2 water content MH ₁ , MH ₂ First and second hydrogen storage materials T ₁ , T ₂ , T ₃ First, second and third tanks

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masashi Takahashi 5-9-6 Tokodai, Tsukuba, Ibaraki Pref. Inside Tsukuba Research Laboratories, Nippon Heavy Industries, Ltd. (72) Inventor Masaki Ueyama 1-4-4 Chuo, Wako, Saitama No. 1 In Honda R & D Co., Ltd. (72) Inventor Junichi Kitagawa 1-4-1 Chuo, Wako-shi, Saitama F-term in Honda R & D Co., Ltd. (Reference) 4G040 AA14 AA25 EA02 EA03 EA06 EB31 5H027 AA02 BA01 BA09 BA14

Claims (6)

[Claims] 1. A reformer (3) for producing hydrogen from a raw material such as alcohol or gasoline, and hydrogen stored by the reformer (3) is absorbed, and then the stored hydrogen is released to produce hydrogen. A hydrogen storage (15) that can be supplied to a device (2) that is a fuel, and the hydrogen storage (15)
Has a first storage unit (15 ₁ ) provided with a _first hydrogen storage material (MH ₁ ) and a second storage unit (15 ₂ ) provided with a _second hydrogen storage material (MH ₂ ) , Both hydrogen storage materials (MH ₁ ,
MH ₂ ), the first hydrogen storage material (MH ₁ ) is replaced by the second hydrogen storage material (M
H ₂ ), while the second hydrogen storage material (MH ₂ ) is superior to the first hydrogen storage material (MH ₁ ) with respect to the ease of releasing stored hydrogen. the temporarily occluded hydrogen from the reformer (3) to the first reservoir (15 _1), said second reservoir (15 ₂₎ the release of hydrogen from the first reservoir (15 ₁₎ By storing it, the operation of the device (2) can be started at the second storage unit (15).
₂ ) the hydrogen released from the first storage unit (15 ₁ ), and the operation of the device (2) is continued using the hydrogen released from the first storage unit (15 ₁ ). Feeding system. 2. The first storage unit (15 ₁ ) includes at least three tanks (T ₁ , T ₂ , T ₃ ), and when the operation of the device (2) is continued, one tank (T ₁ ) is provided. , T
_2, when the T ₃₎ is in the hydrogen release condition, the hydrogen of another one of said tanks _{(T 3, T 1, T} 2) is in the hydrogen storage state, the hydrogen of claim 1, wherein the device for the fuel Feeding system. 3. The hydrogen from the reformer (3) is supplied to the first
Before storing the hydrogen in the storage section (15 ₁ ), the hydrogen is subjected to a dehumidification treatment, and the first and second storage sections (15 ₁ , 1
The release of hydrogen from 5 ₂₎ prior to introduction into the fuel cell (2) as the device performs humidification process to its release hydrogen, and includes two humidistat (4 _1, 4 _2), 3. A system for supplying hydrogen to equipment using hydrogen as claimed in claim 1 or 2. 4. The humidifier (4 ₁ , 4 ₂ ) according to claim 3, wherein after the dehumidifying function is exhibited, the humidifying function is enabled, and after the humidifying function is activated, the dehumidifying function is enabled. A hydrogen supply system for equipment that uses hydrogen as fuel. 5. In the dehumidifying treatment, use one of the two humidifiers (4 ₁ , 4 ₂ ) having a smaller water content (Cw1, Cw2). In the humidifying treatment, use both humidifiers. vessel (4 _1, 4 ₂₎ water content to use one with a lot of (Cw1, Cw2), hydrogen supply system of hydrogen according to claim 3 or 4, wherein the device for the fuel of the. 6. A reformer (3) for producing hydrogen from a raw material such as alcohol or gasoline, and storing the hydrogen generated by the reformer (3), and then releasing the stored hydrogen to generate hydrogen. A hydrogen storage (15) capable of supplying hydrogen to a device (2) serving as a fuel;
5) includes a first storage unit (15 ₁ ) provided with a _first hydrogen storage material (MH ₁ ) and a second storage unit (15 ₂ ) provided with a _second hydrogen storage material (MH ₂ ). And both hydrogen storage materials (M
H ₁ , MH ₂ ), the hydrogen storage characteristics of the first hydrogen storage material (M
H ₁ ) has a lower hydrogen storage equilibrium pressure than the _second hydrogen storage material (MH ₂ ).
At the same temperature and the same pressure, the second hydrogen storage material (MH)
₂ ) has a higher equilibrium pressure for releasing hydrogen than the _first hydrogen storage material (MH ₁ ), and causes the first storage section (15 ₁ ) to temporarily store hydrogen from the reformer (3); The hydrogen released from the first storage unit (15 ₁ ) is transferred to the second storage unit (15 ₂ ).
By starting the operation of the device (2) with the hydrogen released from the second storage unit (15 ₂ ),
A hydrogen supply system for a device using hydrogen as fuel, wherein the operation of the device (2) thereafter is continued using the hydrogen released from the first storage unit (15 ₁ ).