Abstract: A terahertz wave spectrometry system that is capable of identifying analyzing target molecules contained in an analyte even if the analyte contains water, by activating a water remover to remove water according a comparison of absorption spectrums so that water in the analyte is easily removed without causing the analyzing target molecules to disappear due to decomposition or denaturation.

Abstract: Provided is a terahertz wave spectrometry system that is capable of easily identifying and quantitating an analyzing target molecule in an analyte, even if the analyte contains water, by calculating a baseline function expressing the absorption characteristic of water peculiar to the terahertz wave.

Abstract: Provided is a terahertz wave spectrometry system that is capable of easily identifying and quantitating an analyzing target molecule in an analyte, even if the analyte contains water, by calculating a baseline function expressing the absorption characteristic of water peculiar to the terahertz wave.

Abstract: Provided is a terahertz wave spectrometry system that is capable of identifying analyzing target molecules contained in an analyte even if the analyte contains water, by activating a water remover to remove water according a comparison of absorption spectrums so that water in the analyte is easily removed without causing the analyzing target molecules to disappear due to decomposition or denaturation.

Abstract: A method of operating a hydrogen generator includes: a step (a) of generating a hydrogen-containing gas by a hydrogen generation unit by using a raw material in the hydrogen generation unit; a step (b) of removing a sulfur compound from the raw material by a hydrodesulfurizer which is heated by heat transferred from the hydrogen generation unit; and a step (c) of performing an operation of supplying the raw material to the hydrogen generation unit after stopping the generating of the hydrogen-containing gas by the hydrogen generation unit. The step (c) is not performed unless, at least, a temperature of the hydrodesulfurizer is such a temperature at which carbon deposition from the raw material is suppressed.

Abstract: A hydrogen purifier includes: a CO remover configured to reduce carbon monoxide in a hydrogen-containing gas through an oxidation reaction, the hydrogen-containing gas containing ammonia and carbon monoxide; and an ammonia remover provided upstream from the CO remover, the ammonia remover being configured to cause a reaction between ammonia in the hydrogen-containing gas and oxygen by using a catalyst to decompose the ammonia.

Abstract: A hydrogen purifier (100) includes: a shift conversion catalyst (5a) which reduces, through a shift reaction, carbon monoxide contained in a hydrogen-containing gas; and a methanation catalyst (6a) which reduces, through a methanation reaction, carbon monoxide contained in the hydrogen-containing gas that has passed through the shift conversion catalyst (5a). The shift conversion catalyst (5a) and the methanation catalyst (6a) are heat exchangeable with each other via a first partition wall (8), and a flow direction of the hydrogen-containing gas that passes through the shift conversion catalyst (5a) is opposite to a flow direction of the hydrogen-containing gas that passes through the methanation catalyst (6a).

Abstract: A hydrogen generator includes a reformer configured to cause a reforming reaction using a material and steam to generate a hydrogen-containing gas; a shift converter configured to reduce CO in the hydrogen-containing gas by a shift reaction; an evaporator provided adjacent to the shift converter so as to perform heat exchange with an upstream side of the shift converter and configured to evaporate water; and a hydro-desulfurizer provided adjacent to the shift converter so as to perform heat exchange with a downstream side of the shift converter and configured to remove a sulfur compound in the material by a hydrodesulfurization reaction.

Abstract: A hydrogen generation device of the present invention comprises a first path (31) used to supply a raw material to a reformer (1) through at least a first desulfurization unit (2); a second path (32) used to supply the raw material to the reformer (1) through only the second desulfurization unit (3); a switch unit (6); a flow control unit (8) which selectively enables or inhibits a flow of the hydrogen-containing gas generated in the reformer 1 toward the second desulfurization unit (3); and a controller (12) configured to execute processing in such a manner that in at least either a time point before generation of the hydrogen-containing gas is stopped, or start-up, the switch unit 6 performs switching to select the first path (31), and the flow control unit (8) enables the flow of the hydrogen-containing gas, while the reformer 1 is generating the hydrogen-containing gas.

Abstract: A hydrogen generator (100) includes: a hydrogen generating unit (1) configured to generate a hydrogen-containing gas by using a raw material gas; a hydro-desulfurizer (7) configured to remove a sulfur compound in the raw material gas supplied to the hydrogen generating unit (1); a first gas channel (5) through which the raw material gas supplied through the hydro-desulfurizer (7) to the hydrogen generating unit (1) flows; a recycle channel (10) through which the hydrogen-containing gas from the hydrogen generating unit (1) is supplied to the raw material gas in the first gas channel (5) located upstream of the hydro-desulfurizer (7); a raw material gas supply unit (6) disposed between the hydro-desulfurizer (7) and a meeting point where the first gas channel (5) and the recycle channel (10) meet; and a first on-off valve (8) disposed between the raw material gas supply unit (6) and the hydro-desulfurizer (7) to close when the hydrogen generator (100) stops.

Abstract: A hydrogen generation apparatus (150) includes: a first desulfurizer (13) configured to remove, through adsorption, a sulfur compound in a raw material gas that is to be supplied to a reformer; a second desulfurizer (21) configured to hydrodesulfurize a sulfur compound in the raw material gas that is to be supplied to the reformer; a first passage (16) through which the raw material gas is supplied to the reformer through the first desulfurizer (13); a second passage (17) through which the raw material gas is supplied to the reformer through the second desulfurizer (21), without passing through the first desulfurizer (13); a switch configured to switch a passage through which the raw material gas flows between the first passage (16) and the second passage (17); and a controller.

Abstract: A hydrogen generation apparatus and a fuel cell system including: a reformer (1) configured to generate a hydrogen-containing gas by causing a reforming reaction of a raw material; a hydrodesulfurizer (4) configured to remove a sulfur compound from the raw material; an adsorption desulfurizer (3) configured to remove a sulfur compound from the raw material; a first raw material passage (15) through which the raw material that is supplied to the reformer not through the adsorption desulfurizer but through the hydrodesulfurizer flows; a second raw material passage (16) through which the raw material that is supplied to the reformer through the adsorption desulfurizer flows; a switch (17, 18) configured to switch, between the first raw material passage and the second raw material passage, a raw material flowing passage through which the raw material flows; and a controller (12) configured such that when the reformer is generating the hydrogen-containing gas, the controller sets the raw material flowing passage t

Abstract: A hydrogen generating apparatus is provided that further suppresses deterioration in capability of a converting catalyst in raw material purge in a shutdown operation.

Abstract: A hydrogen generation apparatus including: a first desulfurizer; a second desulfurizer; a reformer to generate a hydrogen-containing reformed gas from a raw material gas from which sulfur has been removed by at least one of the first desulfurizer and the second desulfurizer; and a recycle passage through which a part of the reformed gas generated by the reformer is mixed into the raw material gas to be supplied to the second desulfurizer. After installation or maintenance of the hydrogen generation apparatus, the raw material gas is supplied to the reformer through the first desulfurizer until a catalyst in the second desulfurizer is activated by a mixed gas of the reformed gas supplied through the recycle passage and the raw material gas, and after the catalyst in the second desulfurizer is activated, the raw material gas is supplied to the reformer through the second desulfurizer.

Abstract: A hydrogen purifier includes: a CO remover configured to reduce carbon monoxide in a hydrogen-containing gas through an oxidation reaction, the hydrogen-containing gas containing ammonia and carbon monoxide; and an ammonia remover provided upstream from the CO remover, the ammonia remover being configured to cause a reaction between ammonia in the hydrogen-containing gas and oxygen by using a catalyst to decompose the ammonia.

Abstract: A fuel processing apparatus includes: a reformer; a raw material supplying unit for supplying a raw material to the reformer and blocking the supply of the raw material; a steam supplying unit for supplying steam to the reformer and blocking the supply of the steam; a closing device for blocking a gas passage located downstream of the reformer; and a controller. The controller seals the reformer by blocking the supply of the raw material from the raw material supplying unit and the supply of the steam from the steam supplying unit and closing the closing device, and performs a pressure compensation operation by using both the supply of the steam from the steam supplying unit and the supply of the raw material from the raw material unit as pressure in the reformer decreases due to a temperature decrease.

Abstract: A hydrogen generator includes a reformer configured to cause a reforming reaction using a material and steam to generate a hydrogen-containing gas; a shift converter configured to reduce CO in the hydrogen-containing gas by a shift reaction; an evaporator provided adjacent to the shift converter so as to perform heat exchange with an upstream side of the shift converter and configured to evaporate water; and a hydro-desulfurizer provided adjacent to the shift converter so as to perform heat exchange with a downstream side of the shift converter and configured to remove a sulfur compound in the material by a hydrodesulfurization reaction.

Abstract: A method of operating a hydrogen generator includes: a step (a) of generating a hydrogen-containing gas by a hydrogen generation unit by using a raw material in the hydrogen generation unit; a step (b) of removing a sulfur compound from the raw material by a hydrodesulfurizer which is heated by heat transferred from the hydrogen generation unit; and a step (c) of performing an operation of supplying the raw material to the hydrogen generation unit after stopping the generating of the hydrogen-containing gas by the hydrogen generation unit. The step (c) is not performed unless, at least, a temperature of the hydrodesulfurizer is such a temperature at which carbon deposition from the raw material is suppressed.

Abstract: A hydrogen generation apparatus 100 of the present invention includes: a reformer 4 for generating a hydrogen-containing gas through a reforming reaction using a raw material gas; a raw material gas supplier 13 for supplying the raw material gas to the reformer 4; a methanator 6 for reducing carbon monoxide contained in the hydrogen-containing gas through a methanation reaction; and a controller for controlling the raw material gas supplier 13 to decrease an amount of the raw material gas supplied to the reformer 4 so as to decrease an amount of generation of the hydrogen-containing gas when a temperature of the methanator 6 increases.

Abstract: A method of shutting down a hydrogen generation apparatus for limiting degradation in a catalyst due to dew condensation at the time of shutdown is provided. The method of shutting down the hydrogen generation apparatus comprising, a combustor which supplies heat necessary to a reforming device, a first air supplier which supplies air to the combustor, a combustion exhaust gas path formed such that the combustion exhaust gas produced in the combustor makes heat exchange with the reforming device and then with a CO reducing device, and a controller which operates the first air supplier so that the temperature of the gas in the CO reducing device does not become equal to or lower than a dew point after shutdown of the combustion operation of the combustor and before a start of a purging operation to purge the interiors of the reforming device and the CO reducing device with a replacement gas.