Abstract:
A hydrogen generator (100) includes: a reformer (1) configured to generate a hydrogen-containing gas using a raw material and steam; a water evaporator (4) configured to supply the steam to the reformer (1); a sealing device (10) provided on a passage located downstream of the reformer (1) and configured to block a gas in the passage from flowing to the atmosphere; and a depressurizer (3) provided on a passage located upstream of the reformer (1) and configured to release to the atmosphere, pressure in the hydrogen generator (100) which pressure is increased by water evaporation in the water evaporator (4) after the sealing device (10) is closed.
Abstract:
A hydrogen generating apparatus including a reformer which performs a reforming reaction using a material and steam to generate hydrogen-containing gas; a water evaporator which generates the steam supplied to the reformer; a first water pathway through which reforming water to be supplied to the water evaporator flows; a pump which supplies the reforming water to the water evaporator 1a; a second water pathway 7 branching from the first water pathway on the downstream side of the pump; a first water tank to which the water flowing through the second water pathway flows; a first flow rate controller provided on the second water pathway; and a controller which operates the pump and controls the first flow rate controller so that water flows through the second water pathway, thereby stably generating hydrogen and preventing degradation of the reformer thereof is realized.
Abstract:
Provided is a hydrogen generator capable of suppressing degradation in capability of a hydrogen generator which is caused by crush of particulate reforming catalyst and of suppressing decrease in reforming efficiency due to decrease in heat transfer efficiency of a catalyzing portion which is caused by the crush of the particulate reforming catalyst. A hydrogen generator comprises a catalyzing portion 50 having particulate reforming catalyst P, and a combusting portion 5 for heating the catalyzing portion 50, the hydrogen generator being configured to generate a reformed gas containing hydrogen while flowing a material gas containing steam in a direction in which the catalyzing portion 50 extends. The catalyzing portion 50 includes a separating member 40. The separating member 40 is disposed on a separating cross-section which is a cross-section of the catalyzing portion 50 in a direction perpendicular to the direction in which the catalyzing portion 50 extends. A plurality of air holes 40D having a shape to inhibit passage of the particulate reforming catalyst P are provided on the separating member 40. An opening having a shape to permit passage of the particulate reforming catalyst P is provided on the separating cross-section.
Abstract:
A synchronization system for establishing synchronization between a first communications device and a second communications device connected through a communications line transmitting an xDSL signal is disclosed that includes a clock extraction part configured to extract, from a synchronous network connected to the first communications device, the synchronization clock signal of the synchronous network; a synchronization signal generation and transmission part configured to generate a synchronization signal from the synchronization clock signal and to transmit the synchronization signal to the communications line, the synchronization signal having a frequency in a frequency band different from the frequency band of the xDSL signal; a synchronization signal extraction part configured to extract the synchronization signal from the communications line; and a clock reproduction and output part configured to reproduce the synchronization clock signal from the synchronization signal and to supply the synchronization clock signal to the second communications device.
Abstract:
A hydrogen generator of the present invention is provided with: a reformer for generating a reformed gas containing hydrogen from a feed material containing an organic compound at least containing carbon and hydrogen and water; a heater for heating the reformer to a temperature required for generating the reformed gas; a carbon monoxide reducing unit having a carbon monoxide reducing catalyst for reducing carbon monoxide contained in the reformed gas generated in the reformer; and a temperature detector for detecting at least one of a temperature of the reformed gas in the carbon monoxide reducing unit and a temperature of the carbon monoxide reducing catalyst, wherein an amount of the feed material to be supplied to the reformer is controlled based on a comparison between a detected temperature detected by the temperature detector and a reference temperature set in accordance with the amount of the feed material.
Abstract:
A hydrogen generation apparatus has a reformer of generating a reformed gas containing at least hydrogen and carbon monoxide by making a material containing an organic compound react with water; carbon-monoxide-removing means of including at least a shifter of reducing the carbon monoxide contained in the reformed gas generated by the reformer in accordance with a shift reaction; and material-humidifying means of humidifying the material by directly or indirectly using moisture contained in the reformed gas.
Abstract:
A hydrogen producing apparatus comprising: a reforming section having a reforming catalyst which causes a reaction between a carbon-containing organic compound as a feedstock and water; a feedstock supply section for supplying the feedstock to the reforming section; a water supply section for supplying water to the reforming section; a heating section for heating the reforming catalyst; a shifting section having a shift catalyst which causes a shift reaction between carbon monoxide and water contained in a reformed gas supplied from the reforming section; and a purifying section having a purifying catalyst which causes oxidation or methanation of carbon monoxide contained in a gas supplied from the shifting section, wherein the shift catalyst comprises a platinum group metal and a metal oxide.
Abstract:
The hydrogen generator includes: a reformer 101 having a reforming catalyst configured to cause a source material and water to react with each other to generate a hydrogen-rich reformed gas; a reformer heater 104 configured to heat the reformer; a carbon monoxide reducing portion 111,121 having a carbon monoxide reducing catalyst configured to reduce carbon monoxide contained in the reformed gas; a carbon monoxide reduction heater 112,123 configured to heat at least one of the carbon monoxide reducing portion, the carbon monoxide reducing catalyst and the reformed gas passing through the carbon monoxide reducing portion; and a controller 200 capable of control such that the carbon monoxide reduction heater is caused to operate in a stop operation period.
Abstract:
A hydrogen generation apparatus (100) includes: a reformer (10) configured to generate a hydrogen-containing gas by using a raw material and steam; a raw material passage (21) through which the raw material that is supplied to the reformer (10) flows; a hydrodesulfurizer (13) provided downstream from a most downstream valve (11) on the raw material passage (21) and configured to remove a sulfur compound from the raw material; a sealer (15) provided on a passage (24) downstream from the reformer (10) and configured to block communication between the reformer (10) and the atmosphere; and a depressurizer (16) provided on the raw material passage (21) at a portion connecting the hydrodesulfurizer (13) and the reformer (10) and configured to release, to the atmosphere, pressure in the reformer (10) that has increased after the sealer (15) is closed.
Abstract:
A fuel cell system includes a reforming unit, a carbon monoxide decreasing unit, a fuel cell, a burner unit, a raw gas supply device, and a heating unit. The heating unit is controlled at a start-up operation of the fuel cell system, so as to adjust an amount of a desorbed raw gas desorbed out of components of the raw gas adsorbed to at least one of a reforming catalyst and a carbon monoxide decreasing catalyst such that a ratio of an amount of combustion air to an amount of a raw gas in the burner unit falls within a predetermined range.