Abstract: A hydrogen production supply system that produces hydrogen gas to be supplied to a hydrogen storage tank, the hydrogen production supply system including a control circuit configured to control an operation load ratio of the hydrogen production apparatus to a predetermined operation load ratio, to increase the operation load ratio of the hydrogen production apparatus to a first operation load ratio larger than the predetermined operation load ratio at first timing, and to decrease the operation load ratio of the hydrogen production apparatus to the predetermined operation load ratio from the first load operation ratio at second timing, wherein an increase in the operation load ratio at the first timing takes precedence over a decrease in the operation load ratio at the second timing.

Abstract: An operation method is provided for a hydrogen production apparatus that is disposed in a hydrogen station and produces hydrogen gas to be supplied to a fuel cell vehicle (FCV) arriving at the hydrogen station. The operation method includes starting up a hydrogen production apparatus up to a first operation load ratio preset for a rated operation. The operation method includes increasing an operation load of the hydrogen production apparatus to a second operation load ratio, which is larger than the first operation load ratio, at first timing associated with an arrival of the FCV, and decreasing the operation load of the hydrogen production apparatus to a third operation load ratio, which is smaller than the second operation load ratio, at second timing associated with a completion of hydrogen filling into the FCV.

Abstract: A hydrogen supply system supplying hydrogen, the hydrogen supply system including: a dehydrogenation reaction unit acquiring a hydrogen-containing gas by performing a dehydrogenation reaction of a raw material containing a hydride; and a control unit controlling the hydrogen supply system, in which in a case in which generation of the hydrogen-containing gas in the dehydrogenation reaction unit stops, the control unit causes the hydrogen supply unit to supply hydrogen to the dehydrogenation reaction unit, and the hydrogen supply unit supplies at least one of the hydrogen-containing gas between the dehydrogenation reaction unit and a vapor-liquid separating unit separating a dehydrogenation product from the hydrogen-containing gas and the hydrogen-containing gas separated by the vapor-liquid separating unit separating a dehydrogenation product from the hydrogen-containing gas to the dehydrogenation reaction unit.

Abstract: A hydrogen station includes a water electrolysis device that produces hydrogen gas by an electrolytic reaction consuming power supplied from a commercial power network, a compressor that compresses the hydrogen gas produced by the water electrolysis device, an accumulator that accumulates the hydrogen gas compressed by the compressor, a dispenser that fills a fuel cell vehicle with the hydrogen gas accumulated in the accumulator, and a control device that controls a power consumption amount of the water electrolysis device on the basis of a command for adjusting supply and demand of power of the commercial power network.

Abstract: A flowmeter failure determination method includes: a step of measuring a filling amount of hydrogen gas filled in a fuel tank of an automobile, using a flowmeter; a step of acquiring information of a pressure and a temperature of the fuel tank; a step of calculating the filling amount of the hydrogen gas filled in the fuel tank based on the acquired pressure and temperature and a capacity of the fuel tank in which an expansion rate of the fuel tank is considered; and a step of determining presence or absence of a failure of the flowmeter using an error value between the measured filling amount and the calculated filling amount.

Abstract: Provided is a hydrogen supply system that supplies hydrogen. The hydrogen supply system includes: a dehydrogenation reaction unit that subjects a raw material including a hydride to a dehydrogenation reaction to obtain a hydrogen-containing gas; a hydrogen purification unit that removes a dehydrogenation product from the hydrogen-containing gas obtained in the dehydrogenation reaction unit to obtain a purified gas including high-purity hydrogen; and a degassing unit that removes an inorganic gas contained in the raw material on an upstream side of the dehydrogenation reaction unit in a flow of the raw material.

Abstract: Provided is an operation management system configured to manage delivery of a raw material from a raw material production base where the raw material including a hydride is produced to a plurality of dehydrogenation bases where the raw material is subjected to a dehydrogenation reaction to obtain a hydrogen-containing gas. The operation management system includes: an information acquisition unit configured to acquire first information on a dehydrogenation status in the plurality of dehydrogenation bases; and a delivery plan creation unit configured to create a delivery plan for delivering the raw material to the plurality of dehydrogenation bases on the basis of the first information.

Abstract: Provided is a hydrogen supply system that supplies hydrogen. The hydrogen supply system includes: a dehydrogenation reaction unit that subjects a raw material including a hydride to a dehydrogenation reaction to obtain a hydrogen-containing gas; a circulation system that circulates a reaction inactive fluid to the dehydrogenation reaction unit; and a control unit that controls the hydrogen supply system. The control unit circulates the reaction inactive fluid with the circulation system in a case where production of the hydrogen-containing gas in the dehydrogenation reaction unit is stopped.

Abstract: Provided is an accommodation body that accommodates a raw material including a hydride from which a hydrogen-containing gas is capable of being obtained by subjecting the raw material to a dehydrogenation reaction. The raw material and a dehydrogenation product produced in combination with the hydrogen-containing gas by the dehydrogenation reaction are capable of being loaded together in an internal space.

Abstract: Provided is a hydrogen supply system that supplies hydrogen. The hydrogen supply system includes: a dehydrogenation reaction unit that subjects a raw material including a hydride to a dehydrogenation reaction to obtain a hydrogen-containing gas; a heating mechanism that heats the dehydrogenation reaction unit by using electric power; and an electric power supply unit that supplies at least one of electric power based on renewable energy and electric power based on thermal power generation equipped with carbon dioxide capture and storage to the heating mechanism.

Abstract: A hydrogen gas supply apparatus according to one aspect of the present invention includes a compressor configured to compress hydrogen gas and supply the hydrogen gas compressed to a pressure accumulator which accumulates the hydrogen gas, an adsorption column disposed between the discharge port of the compressor and the pressure accumulator, and configured to include an adsorbent for adsorbing impurities in the hydrogen gas discharged from the compressor, and a plurality of valves disposed at the gas inlet/outlet port side of the adsorption column, being at a discharge port side of the compressor, and configured to be able to seal the adsorption column, wherein the space in the adsorption column is sealed using the plurality of valves such that the inside of the adsorption column is maintained to have a high pressure by the hydrogen gas compressed in the case where the compressor is stopped.

Abstract: According to one aspect of the present invention, a hydrogen production apparatus includes a hydrogen production mechanism configured to produce a hydrogen gas from a raw material by using a catalyst; and an operation control circuit configured to input a parameter value as an index indicating a state of the catalyst, and configured to control an operation maximum load of the hydrogen production mechanism to be variable in correspondence with the parameter value.

Abstract: A hydrogen gas supply apparatus includes a compressor configured to compress hydrogen gas and supply the compressed hydrogen gas toward a pressure accumulator which accumulates the hydrogen gas, a first adsorption column disposed between the discharge port of the compressor and the pressure accumulator and configured to include the first adsorbent for adsorbing impurities in the hydrogen gas discharged from the compressor, a first valve disposed between the discharge port of the compressor and the gas inlet port of the first adsorption column, a second valve disposed between the gas outlet port of the first adsorption column and the pressure accumulator, a return pipe configured to branch from between the first valve and the gas inlet port of the adsorption column and connect to the suction side of the compressor, and a second adsorption column disposed in the middle of the return pipe.

Abstract: A hydrogen gas inventory acquisition system configured to acquire an inventory of a hydrogen gas in a plurality of off-site hydrogen stations, includes a log data creation device configured to create log data obtained by recording each parameter data sampled at an individual sampling timing set to each hydrogen station of the plurality of off-site hydrogen stations in combination with identification information of each of the plurality of off-site hydrogen stations from a plurality of parameter data measured by a plurality of meters disposed in the each hydrogen station to calculate an inventory of the hydrogen gas in the each hydrogen station; an inventory calculation device configured to calculate the inventory of the hydrogen gas at an individual calculation timing set to the each hydrogen station by using the log data; and a sorting device configured to acquire inventory data of the hydrogen gas in the each hydrogen station.

Abstract: According to one aspect of the present invention, an operation method for a hydrogen production apparatus that is disposed in a hydrogen station and produces hydrogen gas to be supplied to a fuel cell vehicle (FCV) arriving at the hydrogen station, the operation method includes starting up a hydrogen production apparatus up to a first operation load ratio preset for a rated operation; increasing an operation load of the hydrogen production apparatus to a second load ratio larger than the first operation load ratio at first timing associated with an arrival of the FCV; and decreasing the operation load of the hydrogen production apparatus to a third operation load ratio smaller than the second operation load ratio at second timing associated with a completion of hydrogen filling into the FCV.

Abstract: According to one aspect of the present invention, a pressure swing adsorption (PSA) device includes an adsorption tower configured to introduce hydrogen gas and adsorb impurity components in the hydrogen gas by using a pressure swing adsorption (PSA) method, an adsorbent of one layer made of activated carbon or an adsorbent of two layers in which activated carbon and zeolite are stacked being disposed in the adsorption tower, the hydrogen gas containing carbon monoxide (CO) of 0.5 vol % or more and 6.0 vol % or less and methane (CH4) of 0.4 vol % or more and 10 vol % or less as the impurity components; and a densitometer configured to detect a concentration of CO in the hydrogen gas discharged from the adsorption tower, wherein the impurity components are adsorbed and removed to cause the CO concentration measured by the densitometer to fall below a threshold.

Abstract: A process of producing a fuel gas for fuel cells, which comprises the steps of: a) treating kerosine having a sulfur content not higher than 5 ppm with a desulfurizing agent to reduce the sulfur content of said treated kerosine to 0.2 ppm or less and b) contacting said treated kerosine from step a) with a steam reforming catalyst to provide a fuel gas mainly composed of hydrogen, said desulfurizing agent in step a) comprising a copper-nickel alloy having a copper to nickel ratio by weight of 80:20 to 20:80 and at least one carrier selected from the group consisting of Al.sub.2 O.sub.3, ZnO and MgO, and the total content of copper and nickel in terms of metals in said desulfurizing agent being in the range of 40 to 70% by weight.