JP2019149266A - System for supplying hydrogen power - Google Patents

Abstract

To solve the problems that although hydrogen in a dry condition obtained by removing moisture from hydrogen manufactured by a hydrogen manufacture device is supplied to a fixation type fuel cell and a hydrogen supply device in conventional one, the cost for manufacturing a pure water for humidify the hydrogen is increased because it is required that the hydrogen to be humidified is supplied to a solid polymer fuel cell (PEFC) used in the fixation fuel cell.SOLUTION: By installing a gas-liquid separator between a branch point of a first supply path and a refinement machine, collecting moisture from a whole hydrogen containing the hydrogen supplied to a hydrogen supply device, and using it for humidifying the hydrogen supplied to a fixation type fuel cell, the hydrogen in a humidification state suitable for a PEFC is supplied to the fixation type fuel cell and can supply the hydrogen in a dry state to the hydrogen supply device without increasing a cost for manufacturing water for the humidification.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a combined hydrogen power supply system that enables hydrogen supply to both stationary fuel cells and fuel cell vehicles.

  In recent years, fuel cells, which are expected as clean power generation technologies with low environmental impact, have been put into practical use in stationary fuel cells (household / commercial cogeneration) and fuel cell vehicles.

  On the other hand, in using hydrogen as an energy source, it is indispensable to supply hydrogen as a fuel safely and stably. In this regard, a method of directly supplying hydrogen as compressed hydrogen or liquid hydrogen, a method of storing and supplying hydrogen using a hydrogen storage material such as a hydrogen storage alloy or carbon nanotube, a steam reforming of methanol or hydrocarbon, and hydrogen Various methods have been proposed, such as a method for supplying hydrogen, and in the future, it would be ideal to produce hydrogen by electrolysis of water using sunlight from the viewpoint of environmental impact. The mainstream is the prospect that fuel cells will become widespread with the improvement of hydrogen supply infrastructure, using hydrogen produced by fuel reforming as fuel.

  The process of producing hydrogen from fossil fuel by reforming will be described in detail. First, the hydrogen generator uses a steam reforming reaction using a reforming catalyst from a raw material gas composed of a hydrocarbon compound and reforming water. , Reformed gas containing hydrogen, carbon dioxide, carbon monoxide, unreacted methane and moisture. At this time, city gas, LPG, kerosene or the like is used as the raw material gas, and pure water is used as the reforming water in order to avoid catalyst deterioration and scale accumulation in the hydrogen generator. When hydrogen is produced by a steam reforming reaction, carbon monoxide (CO) by-product is inevitable. For example, when natural gas mainly composed of methane is used as a raw material, a mixed gas of hydrogen, carbon dioxide and CO is produced by a steam reforming reaction (about 600 ° C.), and further, CO and moisture are combined with hydrogen and dioxide. A method of reducing CO by a metamorphic reaction (about 300 ° C.) that changes to carbon is adopted. Still, it contains about 1000 ppm to 1 vol% of CO. Further, CO is removed to about 10 ppm by a pressure swing adsorption (PSA) method, a hydrogen selective permeable membrane separation method, a carbon monoxide selective oxidation method, or the like.

  The reformed gas from which CO has been removed still contains trace amounts of CO, carbon dioxide, unreacted methane and moisture, but when considering supplying hydrogen to a fuel cell vehicle, the fuel mounted on the vehicle The battery has a system that does not use excessive hydrogen, that is, uses up hydrogen as much as possible, sufficiently removes impurity gases such as CO, carbon dioxide, methane, and moisture, and has a high purity of 99.999% or more. Hydrogen is required. For this reason, as a method for supplying high-purity hydrogen, a method has been proposed in which an impurity gas remover filled with an adsorbent that adsorbs an unnecessary gas is disposed in a hydrogen supply path to a fuel cell vehicle (for example, a patent) Reference 1).

  Impurity gas remover for supplying high-purity hydrogen includes a hydrogen PSA device using an adsorbent, a hydrogen selective permeation membrane separator, or a voltage applied to a solid polymer membrane, containing hydrogen on the positive electrode side A hydrogen purification booster or the like that supplies gas and takes out high-purity hydrogen gas that has been boosted from the negative electrode side is used (see, for example, Patent Document 2).

  FIG. 5 is a schematic configuration diagram of a conventional hydrogen station described in Patent Document 3. As shown in FIG.

  As shown in FIG. 5, in the conventional hydrogen station 1, since the pressure is increased by the compressor 124 before flowing the hydrogen into the hydrogen storage tank 3 that stores hydrogen, moisture is condensed and condensed in the compression process. Dry hydrogen that has been stored after the water has been drained and from which moisture has been removed has been supplied to stationary fuel cells and fuel cell vehicles.

JP 2005-219991 A Japanese Patent No. 3358820 JP 2007-16975 A

  However, as the stationary fuel cell, a polymer electrolyte fuel cell (PEFC) is mainly used. Since the PEFC generates power using humidified hydrogen, the stationary fuel cell is used in the conventional configuration. The hydrogen supplied to the tank needs to be humidified before flowing into the stationary fuel cell. This is because in PEFC, it is necessary to keep the polymer electrolyte membrane moist in order to maintain the proton conductivity of the inner polymer electrolyte membrane. Hydrogen having a dew point lower than the operating temperature of PEFC is supplied. Sometimes the polymer electrolyte membrane is dried, which is not suitable for supply. In the conventional hydrogen station 1, hydrogen is stored and supplied in a dry state in which the moisture in the hydrogen is removed from the humidified hydrogen supplied from the hydrogen production apparatus 2. When supplying hydrogen to the battery, it is necessary to humidify the hydrogen, and there is a problem that equipment costs increase, such as installing a water purification device in order to secure clean water for humidification.

  In addition, as a method of supplying humidified hydrogen, a method of directly supplying the hydrogen generated in the hydrogen production apparatus without performing moisture removal by compression or the like is conceivable. However, there is a problem in that dehydrated water is generated when hydrogen is stored in a hydrogen-using device that is supplied with humidified hydrogen and receives hydrogen supplied from a hydrogen supply device.

  In order to solve the above-described conventional problems, a hydrogen power combined system according to the present invention includes a hydrogen production apparatus that produces hydrogen from a raw material containing a hydrogen element, and a hydrogen supply apparatus that supplies hydrogen produced by the hydrogen production apparatus to the outside. And a power generation apparatus that generates power using hydrogen, wherein the hydrogen supply system includes a first supply path for supplying hydrogen generated by the hydrogen production apparatus to the power generation apparatus, and a branch point of the first supply path. A second supply path that branches and supplies hydrogen produced by the hydrogen production apparatus to the hydrogen supply apparatus, and a part of the water in the hydrogen produced by the hydrogen production apparatus that is arranged upstream from the branch point of the first supply path Is arranged between the gas-liquid separator for separating the gas and the branch point of the first supply path and the power generation apparatus, and the water supplied from the first supply path to the power generation apparatus is humidified by water separated by the gas-liquid separator. And a humidifier. It is intended.

  Thus, moisture can be recovered from the entire hydrogen including the hydrogen supplied to the hydrogen supply device side and used for humidification of hydrogen after branching to the power generation device side, and a water purification device for humidification is installed. Thus, without increasing the equipment cost, dry hydrogen can be supplied to the hydrogen supply device, and hydrogen containing a moisture amount suitable for a power generation device such as a stationary fuel cell can be supplied to the fuel cell.

  The hydrogen power supply system of the present invention can also collect moisture contained in hydrogen supplied to the power generation device and supply it to the power generation device, and increase equipment costs such as installing a water purification device for humidification. In addition, dry hydrogen can be supplied to the hydrogen supply device, and hydrogen containing a moisture amount suitable for the power generation device such as a stationary fuel cell can be supplied to the power generation device such as the stationary fuel cell.

Schematic configuration diagram of a hydrogen power combined supply system in Embodiment 1 of the present invention Explanatory drawing of the gas component in Embodiment 1 of this invention Schematic configuration diagram of a hydrogen power combined supply system in Embodiment 2 of the present invention Explanatory drawing of the gas component in Embodiment 2 of this invention Schematic configuration diagram of conventional hydrogen station described in Patent Document 3

  According to a first aspect of the present invention, there is provided a hydrogen production device that produces hydrogen from a raw material containing a hydrogen element, a hydrogen supply device that supplies hydrogen produced by the hydrogen production device to the outside, and a power generation device that generates power using hydrogen. A hydrogen power supply system including a first supply path for supplying hydrogen generated by a hydrogen production apparatus to a power generation apparatus, and a branch point of the first supply path, and supplying hydrogen generated by the hydrogen production apparatus to hydrogen A second supply path for supplying to the apparatus, a gas-liquid separator that is arranged upstream of the branch point of the first supply path and separates part of the water in the hydrogen produced by the hydrogen production apparatus, and the first supply path And a humidifier for humidifying the hydrogen supplied from the first supply path to the power generator by water separated by the gas-liquid separator, and a hydrogen power combined supply system. Is.

  This makes it possible to collect moisture from the entire hydrogen, including the hydrogen supplied to the power generation device, and use it to humidify the hydrogen after branching to the power generation device, and install a water purification device for humidification. It is possible to supply dry hydrogen to a hydrogen supply device without increasing costs, and to supply hydrogen containing water content suitable for a power generation device such as a stationary fuel cell to a power generation device such as a stationary fuel cell. it can. In addition, the blockage of the flow path due to condensation in the first supply path can be avoided regardless of the distance from the gas-liquid separator to the humidifier, and the degree of freedom of equipment arrangement that allows the power generator to stably generate power can be improved.

  According to a second aspect of the present invention, there is provided a hydrogen production device that produces hydrogen from a raw material containing a hydrogen element, a hydrogen supply device that supplies hydrogen produced by the hydrogen production device to the outside, and a power generation device that generates power using hydrogen. A hydrogen power supply system including a first supply path for supplying hydrogen generated by a hydrogen production apparatus to a power generation apparatus, and a branch point of the first supply path, and supplying hydrogen generated by the hydrogen production apparatus to hydrogen A second supply path that supplies the apparatus, a gas-liquid separator that is disposed between the branch point of the second supply path and the hydrogen supply apparatus, and that separates part of the water in the hydrogen generated by the hydrogen production apparatus; A hydrogen power provided with a humidifier disposed between a branch point of the first supply path and the power generation device and humidifying hydrogen supplied to the power generation device from the first supply path by water separated by the gas-liquid separator This is a combined supply system.

  As a result, moisture can be recovered from the hydrogen supplied to the power generation device and used for humidification of hydrogen after branching to the power generation device, and equipment costs can be increased by installing a water purification device for humidification. In addition, dry hydrogen can be supplied to the hydrogen supply device, and hydrogen containing a moisture amount suitable for the power generation device such as a stationary fuel cell can be supplied to the power generation device such as the stationary fuel cell. In addition, the gas-liquid separator recovers only the water content of the hydrogen supplied to the power generation device, so that the processing capacity of the gas-liquid separator can be kept low, reducing the equipment cost and improving the economics of the system. Can do.

  According to a third aspect of the invention, in particular, in the second supply path of the hydrogen power combined system of the first or second aspect of the invention, the hydrogen supplied from the hydrogen production apparatus is disposed between the gas-liquid separator and the hydrogen supply apparatus. It is set as the structure further provided with the compressor which compresses.

  Thus, by supplying high-pressure hydrogen from the hydrogen supplier, a larger amount of hydrogen can be stored in the hydrogen-using device, and the convenience of the hydrogen-using device can be improved. In addition, before hydrogen flows into a compressor that has a sliding part and is likely to be contaminated with impurities, moisture in the hydrogen can be recovered and humidified by supplying higher-purity water to the humidifier. It is possible to prevent the performance deterioration due to the accumulation of impurities in the vessel and improve the durability of the system.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a hydrogen power combined supply system according to Embodiment 1 of the present invention, and FIG. 2 is an explanatory diagram of gas components according to Embodiment 1 of the present invention.

  In FIG. 1, a combined hydrogen power supply system 100 </ b> A includes a raw material gas supply unit 20, a reforming water supply unit 25, a hydrogen generator 26 that generates hydrogen, a purifier 23, a stationary fuel cell 7, and a hydrogen supply. It is comprised by the apparatus 28 and the humidifier 15A. The hydrogen power combined system 100 </ b> A branches from the first supply path 13 for supplying the produced hydrogen to the stationary fuel cell 7 and the branch point 27 from the first supply path 13, and supplies hydrogen to the hydrogen supply device 28. The second supply path 14 that is installed, the gas-liquid separator 9A that separates the water in the hydrogen, and the recovered water that supplies the water separated by the gas-liquid separator 9A to the humidifier 15A It comprises a supply path 11 and a pure water producing device 8 for producing pure water as reforming water. In the present specification, “water” means liquid water or water vapor. The stationary fuel cell 7 is an example of a power generator that generates power using hydrogen. The hydrogen supply device 28 can supply hydrogen to the outside.

  The hydrogen supply device 28 has a hydrogen storage function and receives hydrogen supplied from the second supply path 14 even when hydrogen is not supplied to the hydrogen-using device, and prepares for hydrogen supply to the hydrogen-using device. Storage.

  The first supply path 13 has one end connected to the gas outlet of the hydrogen generator 26 and the other end connected to the anode gas inlet of the stationary fuel cell 7. The second supply path 14 branches from a branch point 27 of the first supply path 13. Each of the refiner 23, the gas-liquid separator 9A, and the humidifier 15A is disposed in the first supply path 13. The purifier 23 is located between the hydrogen generator 26 and the branch point 27. The gas-liquid separator 9 </ b> A is located upstream of the branch point 27. Specifically, the gas-liquid separator 9 </ b> A is located between the purifier 23 and the branch point 27. The humidifier 15 </ b> A is located between the branch point 27 and the stationary fuel cell 7.

  The second supply path 14 has one end connected to the branch point 27 and the other end connected to the gas inlet of the hydrogen supply device 28.

  The recovered water supply path 11 has one end connected to the liquid outlet of the gas-liquid separator 9A and the other end connected to the liquid inlet of the humidifier 15A.

  The hydrogen generator 26 uses the reforming catalyst to reform the raw material gas containing the hydrocarbon compound supplied from the raw material gas supply unit 20 using the reforming water supplied from the reforming water supply unit 25. Thus, a reformed gas containing hydrogen as a main component is generated. Here, the stationary fuel cell 7 is, for example, PEFC, and the source gas supply unit 20 is, for example, a booster for supplying source gas to the hydrogen generator 26. The reforming water supply unit 25 is, for example, a water pump for supplying reforming water to the hydrogen generator 26, and the purifier 23 is a high-purity hydrogen from which impurity gases other than water vapor in hydrogen are removed. In this embodiment, this is a hydrogen permselective membrane separator.

  Hereinafter, steps from when the hydrogen power combined supply system 100A receives the raw material gas and the reforming water to produce hydrogen and supply hydrogen to the stationary fuel cell 7 and the hydrogen supply device 28 will be described in order.

  First, the raw material gas is supplied from the raw material gas supply unit 20 to the hydrogen generator 26 and reformed with water vapor to form a gas containing hydrogen, by-produced CO, carbon dioxide, unreacted methane and moisture, A hydrogen-rich reformed gas containing hydrogen as a main component and having a CO content reduced to about 1000 ppm to 1 vol% is produced by a modification reaction that changes CO and moisture into hydrogen and carbon dioxide. The reformed gas contains unreacted moisture and becomes a humidified gas. Furthermore, this reformed gas is circulated through the purifier 23 to remove impurity gases such as CO, carbon dioxide, and methane, and high purity hydrogen of 99.999% or higher in terms of dry state is obtained.

  The high-purity hydrogen generated by the purifier 23 is supplied to the gas-liquid separator 9A via the first supply path 13 to separate moisture. The dried hydrogen from which the moisture has been separated is supplied to the humidifier 15A, branches at the branch point 27, is supplied to the hydrogen supply device 28 via the second supply path 14, and is supplied to the hydrogen of a fuel cell vehicle or the like. Supplied to used equipment. In the present embodiment, 50% flow of hydrogen branches at the branch point 27 and is supplied to the second supply path 14. The condensed water separated by the gas-liquid separator 9 </ b> A is supplied to the humidifier 15 </ b> A via the recovered water supply path 11 and used for humidifying the hydrogen supplied to the stationary fuel cell 7.

  The above contents will be described in more detail with reference to FIG.

  In FIG. 2, arrows indicate the flow of gas and condensed water.

In the present embodiment, water and a raw material gas having a composition of CH _{4 of} 100% are used, steam reforming is performed at a conversion rate of 95% in the hydrogen generator 26, and H ₂ O and H _{2 are} purified in the purifier 23. The other components are completely removed. As a result, as shown in FIG. 2, the partial pressure of water vapor contained in the hydrogen near the outlet of the purifier 23 is 0.14 atm, and the dew point rises to 52 ° C.

  Here, the stationary fuel cell 7 that generates power using the hydrogen supplied from the first supply path 13 and supplies the electric power to the house (home) and the office is a PEFC and operates at 60 ° C. The PEFC needs to keep the electrolyte membrane in the fuel cell moist for power generation operation, and the hydrogen supplied to the stationary fuel cell 7 has a dew point higher than 60 ° C. which is the operating temperature of the stationary fuel cell 7. Therefore, hydrogen near the outlet of the refiner 23 is not suitable for supply to the stationary fuel cell 7.

  In the gas-liquid separator 9A, the temperature of hydrogen is reduced to 30 ° C., and 0.43 mol / min water is condensed. All of the condensed water is recovered and supplied to the humidifier 15A via the recovered water supply path 11. As shown in FIG. 2, the hydrogen humidified by the humidifier 15 </ b> A contains moisture having a water vapor partial pressure of 0.21 atm as a result of the humidification, and the dew point is 62 ° C., which is the operating temperature of the stationary fuel cell 7. Hydrogen having a dew point higher than ° C. is suitable for supply to the stationary fuel cell 7.

  As described above, by adopting the configuration described in the present embodiment, moisture is recovered from the entire hydrogen including the hydrogen supplied to the hydrogen supply device 28, and downstream of the branch point 27 of the first supply path 13. It can be used for humidification of hydrogen to increase the dew point of hydrogen supplied to the stationary fuel cell 7, and supplies dry hydrogen to the hydrogen supply device 28 and is suitable for supply to the stationary fuel cell 7. Hydrogen containing moisture can be supplied. Further, in the first supply path 13 between the gas-liquid separator 9A and the humidifier 15A, the flow path is blocked by the condensation of moisture, and the power generation operation in the stationary fuel cell 7 is stopped. Can be avoided regardless of the distance. As a result, the stationary fuel cell 7 is installed near the house that uses electric power, and the hydrogen supply device 28 is installed near the garage of the fuel cell vehicle located away from the house while minimizing transmission loss. Thus, the degree of freedom of device arrangement can be improved.

  The gas-liquid separator 9A is not particularly limited as long as it is a dehumidifier, moisture removing means, or the like that can separate and discharge part of the moisture in the gas from the supplied gas. Further, water vapor may be discharged from the gas-liquid separator 9A together with the condensed water. The gas-liquid separator 9A may be, for example, a cooling separator, a membrane permeation separator, or an adsorption separator.

  The purifier 23 only needs to be able to remove impurity gases other than water vapor. For example, the purifier 23 applies a voltage to the hydrogen PSA device or the solid polymer film, supplies the hydrogen-containing gas to the positive electrode side, and supplies the negative electrode. It may be a hydrogen purification booster that takes out high-purity hydrogen gas that has been boosted from the side.

  The hydrogen generator 26 only needs to use water as a raw material, and may be a water production type hydrogen production apparatus in addition to a steam reforming type hydrogen production apparatus.

  In addition, the hydrogen utilization apparatus supplied from the hydrogen supply apparatus 28 will not be specifically limited if it is an apparatus using hydrogen, such as a hydrogen engine vehicle other than a fuel cell vehicle.

  The hydrogen supply device 28 is not particularly limited as long as it can supply hydrogen to the outside. The hydrogen supply device 28 includes, for example, a tank and a dispenser. The tank and the dispenser are connected by piping. The tank temporarily stores the hydrogen supplied from the second supply path 14. The dispenser has a structure that can be connected to a hydrogen-using device. The dispenser can supply the hydrogen in the tank to the hydrogen-using device.

  The humidifier 15A is not particularly limited as long as it can humidify hydrogen. The humidifier 15A is, for example, a moisture permeable humidifier.

  Each path such as the first supply path 13, the second supply path 14, and the recovered water supply path 11 is composed of at least one pipe. The pipe is, for example, a metal pipe or a resin pipe.

(Embodiment 2)
FIG. 3 is a schematic configuration diagram of the combined hydrogen power system according to Embodiment 2 of the present invention, and FIG. 4 is an explanatory diagram of gas components according to Embodiment 2 of the present invention.

  In FIG. 3, the hydrogen power combined supply system 100 </ b> B does not have the gas-liquid separator 9 </ b> A installed in the configuration of the hydrogen power combined supply system 100 </ b> A in the first embodiment, and the gas-liquid separator 9 </ b> B Above, it is installed between the branch point 27 and the hydrogen supply device 28. Further, a compressor 24 for increasing the supply pressure of hydrogen is installed between the gas-liquid separator 9B and the hydrogen supply device 28 on the second supply path 14, and the humidifier 15B. Is installed between the branch point 27 of the first supply path 13 and the stationary fuel cell 7 instead of the humidifier 15A. The compressor 24 is not particularly limited as long as it can compress hydrogen. The compressor 24 is, for example, a rotary compressor or a turbo compressor. The recovered water supply path 11 supplies the moisture recovered by the gas-liquid separator 9B to the humidifier 15B, and the other configurations are the same as those in the first embodiment, and thus the description thereof is omitted.

  Hereinafter, the steps from when the combined hydrogen power supply system 100B receives the raw material gas and the reforming water to produce hydrogen and to supply the hydrogen to the stationary fuel cell 7 and the hydrogen supply device 28 will be described in order.

  First, the raw material gas is supplied from the raw material gas supply unit 20 to the hydrogen generator 26 and reformed with water vapor to form a gas containing hydrogen, by-produced CO, carbon dioxide, unreacted methane and moisture, A hydrogen-rich reformed gas containing hydrogen as a main component and having a CO content reduced to about 1000 ppm to 1 vol% is produced by a modification reaction that changes CO and moisture into hydrogen and carbon dioxide. The reformed gas contains unreacted moisture and becomes a humidified gas. Furthermore, this reformed gas is circulated through the purifier 23 to remove impurity gases such as CO, carbon dioxide, and methane, and high purity hydrogen of 99.999% or higher in terms of dry state is obtained.

  The high-purity hydrogen produced by the purifier 23 is supplied to the humidifier 15B via the first supply path 13 and branched at the branch point 27, and then via the second supply path 14 for gas-liquid separation. The water is supplied to the vessel 9B and separated. The dried hydrogen from which moisture has been separated is supplied to the hydrogen supply device 28 and supplied to hydrogen-using equipment such as a fuel cell vehicle. In the present embodiment, 50% flow of hydrogen branches at the branch point 27 and is supplied to the second supply path 14. Further, the condensed water separated by the gas-liquid separator 9 </ b> B is supplied to the humidifier 15 </ b> B via the recovered water supply path 11 and used for humidifying the hydrogen supplied to the stationary fuel cell 7.

  The above contents will be described in more detail with reference to FIG.

In the present embodiment, water and a raw material gas having a composition of CH _{4 of} 100% are used, steam reforming is performed at a conversion rate of 95% in the hydrogen generator 26, and H ₂ O and H _{2 are} purified in the purifier 23. The other components are completely removed. As a result, as shown in FIG. 4, the partial pressure of water vapor contained in the hydrogen near the outlet of the purifier 23 becomes 0.14 atm, and the dew point rises to 52 ° C. In addition, after the flow path is branched, in the gas-liquid separator 9B installed in the second supply path 14, the temperature of the hydrogen drops to 30 ° C., and all the condensed water is collected and installed in the first supply path 13. Is supplied to the humidifier 15B. The amount of condensed water collected by the gas-liquid separator 9B and supplied to the humidifier 15B is 0.22 mol / min. In Embodiment 1, it is collected by the gas-liquid separator 9A and supplied to the humidifier 15A. The flow rate is about half of the amount of condensed water, 0.43 mol / min.

  As shown in FIG. 4, the hydrogen humidified by the humidifier 15 </ b> B contains moisture having a water vapor partial pressure of 0.21 atm as a result of humidification, and the dew point is 62 ° C., which is the operating temperature of the stationary fuel cell 7. Hydrogen having a dew point higher than ° C. is suitable for supply to the stationary fuel cell 7.

  As described above, by adopting the configuration of the present embodiment, moisture contained in the hydrogen supplied to the second supply path 14 is recovered, and humidification of the hydrogen downstream of the branch point 27 of the first supply path 13 is performed. The dew point of hydrogen supplied to the stationary fuel cell 7 can be increased. As a result, dry hydrogen can be supplied to the hydrogen supply device 28, and hydrogen containing a water amount suitable for supply to the stationary fuel cell 7 can be supplied. Further, the amount of condensed water to be processed by the gas-liquid separator 9B and the humidifier 15B can be suppressed, the capacity of the apparatus can be reduced, the apparatus cost can be reduced, and the economic efficiency of the system can be improved. In addition to supplying normal-pressure hydrogen suitable for the stationary fuel cell 7 and supplying high-pressure hydrogen from the hydrogen supply device 28, a larger amount of hydrogen can be stored in a hydrogen-using device such as a fuel cell vehicle. It is possible to improve convenience, for example, by increasing the cruising distance of the fuel cell vehicle per hydrogen supply. In addition, the water in the hydrogen can be recovered through a path upstream from the compressor 24 that has a sliding portion and is likely to be contaminated with impurities. By supplying to the humidifier 15B, it is possible to prevent performance deterioration due to the accumulation of impurities in the humidifier 15B and improve the durability of the system.

  The technology disclosed in this specification is useful for a hydrogen power co-generation system and the like.

DESCRIPTION OF SYMBOLS 1 Hydrogen station 2 Hydrogen production apparatus 3 Hydrogen storage tank 4 Hydrogen supply line 5 Hydrogen supply line 6 Impurity gas removal device 7 Stationary fuel cell 8 Pure water production device 9A Gas-liquid separator 9B Gas-liquid separator 10 Power supply path 11 Recovery Water supply path 13 First supply path 14 Second supply path 15A Humidifier 15B Humidifier 20 Raw material gas supply unit 21 Raw material holder 22 Reformer 23 Purifier 24 Compressor 25 Water supply unit for reforming 26 Hydrogen generator 27 Branch point 28 Hydrogen Supply Device 100A Hydrogen Power Combined System 100B Hydrogen Power Combined System

Claims (3)

A hydrogen production device for producing hydrogen from a raw material containing hydrogen element;
A hydrogen supply device for supplying the hydrogen produced by the hydrogen production device to the outside;
A power generation device that generates electricity using the hydrogen;
A hydrogen power cogeneration system comprising:
A first supply path for supplying the hydrogen generated by the hydrogen production device to the power generation device;
A second supply path that branches at a branch point of the first supply path and supplies the hydrogen generated by the hydrogen production apparatus to the hydrogen supply apparatus;
A gas-liquid separator that is arranged upstream of the branch point of the first supply path and separates a part of the water in the hydrogen generated by the hydrogen production device;
Humidification that humidifies the hydrogen that is disposed between the branch point of the first supply path and the power generation apparatus and that is supplied to the power generation apparatus from the first supply path by the water separated by the gas-liquid separator. And
With hydrogen power supply system. A hydrogen production device for producing hydrogen from a raw material containing hydrogen element;
A hydrogen supply device for supplying the hydrogen produced by the hydrogen production device to the outside;
A power generation device that generates electricity using the hydrogen;
A hydrogen power cogeneration system comprising:
A first supply path for supplying the hydrogen generated by the hydrogen production device to the power generation device;
A second supply path that branches at a branch point of the first supply path and supplies the hydrogen generated by the hydrogen production apparatus to the hydrogen supply apparatus;
A gas-liquid separator that is disposed between the branch point of the second supply path and the hydrogen supply device and separates part of the water in the hydrogen generated by the hydrogen production device;
Humidification that humidifies the hydrogen that is disposed between the branch point of the first supply path and the power generation apparatus and that is supplied to the power generation apparatus from the first supply path by the water separated by the gas-liquid separator. And
With hydrogen power supply system.   The said 2nd supply path | route WHEREIN: The compressor arrange | positioned between the said gas-liquid separator and the said hydrogen supply apparatus, and further compressed the said hydrogen supplied from the said hydrogen production apparatus. The combined hydrogen power supply system.

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