Abstract: A hydrogen generator includes: a tubular reformer configured to generate a hydrogen-containing gas by a reforming reaction using a material gas; a CO reducer configured to reduce carbon monoxide contained in the hydrogen-containing gas generated in the reformer; a tubular hydro-desulfurizer provided at an outer periphery of the reformer and configured to remove a sulfur compound contained in the material gas; and a material gas supply passage through which the material gas to be supplied to the hydro-desulfurizer flows. The material gas supply passage is configured to perform heat exchange with the CO reducer, and a material gas inlet port of the hydro-desulfurizer is provided at an end surface closer to the CO reducer.

Abstract: A hydrogen generation apparatus 200 includes: an evaporating part 7; a reforming reaction part 9A connected to the downstream side of the evaporating part; a carbon monoxide reducing part 20 provided downstream from the reforming reaction part; and a gas guiding part 21 disposed between the reforming reaction part and the carbon monoxide reducing part and configured to guide a gas that has passed through the reforming reaction part to the carbon monoxide reducing part. The evaporating part and the carbon monoxide reducing part are arranged to be adjacent to each other such that, at least, a part of the evaporating part and a part of the carbon monoxide reducing part are heat exchangeable with each other.

Abstract: A hydrogen generator includes: a reformer configured to generate a fuel gas, containing hydrogen as a major component, from a raw material gas; a combustor configured to heat the reformer; a hydro-desulfurizer configured to be heated by the reformer to remove a sulfur compound contained in the raw material gas by a hydrodesulfurization reaction; and a cooler configured to cool down the hydro-desulfurizer. The reformer includes a low temperature portion and a high temperature portion higher in temperature than the low temperature portion. The cooler is provided at a position corresponding to the high temperature portion of the reformer.

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 generator includes: a water evaporation unit configured to mix water with a raw gas; a burner; a combustion exhaust gas flow channel provided on an inner side than the water evaporation unit and through which a combustion exhaust gas from the burner flows; a reforming catalyst layer configured to produce a reformed gas; and a carbon monoxide reduction unit configured to reduce an amount of carbon monoxide contained in the reformed gas. The water evaporation unit includes a flow channel member defining a flow channel through which the raw gas and the water flow. A pitch of the flow channel member is changed according to at least one of an amount of heat exchange between the combustion exhaust gas flow channel and the water evaporation unit and an amount of heat exchange between the water evaporation unit and the carbon monoxide reduction unit.

Abstract: A hydrogen generator includes: a tubular reformer configured to generate a hydrogen-containing gas by a reforming reaction using a material gas; a CO reducer configured to reduce carbon monoxide contained in the hydrogen-containing gas generated in the reformer; a tubular hydro-desulfurizer provided at an outer periphery of the reformer and configured to remove a sulfur compound contained in the material gas; and a material gas supply passage through which the material gas to be supplied to the hydro-desulfurizer flows. The material gas supply passage is configured to perform heat exchange with the CO reducer, and a material gas inlet port of the hydro-desulfurizer is provided at an end surface closer to the CO reducer.

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 generator (4) includes: a reformer (5) which is supplied with a raw material to generate a hydrogen-containing gas through a reforming reaction; a first gas supplying unit (1) which supplies a gas containing a nitrogen-containing compound to the reformer; a CO remover (7) which has an oxidation catalyst containing a metal to be poisoned by ammonia and uses the oxidation catalyst and an oxidation gas to remove carbon monoxide in the hydrogen-containing gas through an oxidation; a second gas supplying unit (3) which supplies the oxidation gas to the CO remover; and a control unit (10), wherein the gas containing the nitrogen-containing compound is supplied from the first gas supplying unit to the reformer during the reforming reaction, a fuel cell system (100) includes the hydrogen generator (4), and the control unit is configured to control to carry out a regeneration operation of the oxidation catalyst if a parameter regarding a cumulative amount of ammonia supplied to the CO remover has reached a

Abstract: A hydrogen generator is described, which comprises: a material supply device (4); a water supply device (5); an evaporator (10); a reforming catalyst layer (1) for generating reformed gas; a CO removing catalyst layer (2) configured to reduce the amount of carbon monoxide contained in the reformed gas generated by the reforming catalyst layer (1); a combustor (3) for heating the reforming catalyst layer (1) and the CO removing catalyst layer (2); a reforming temperature detector (9) for detecting the temperature of the reforming catalyst layer (1); a heater (7) for heating the CO removing catalyst layer (2); a CO removing temperature detector (8) for detecting the temperature of the CO removing catalyst layer (2); and a controller (16) configured to perform control such that the heater (7) heats the CO removing catalyst layer at the time of start-up and such that if the temperature detected by the CO removing temperature detector (8) becomes greater than or equal to a first specified value, the combustor (3)

Abstract: A hydrogen generation apparatus 200 includes: an evaporating part 7; a reforming reaction part 9A connected to the downstream side of the evaporating part; a carbon monoxide reducing part 20 provided downstream from the reforming reaction part; and a gas guiding part 21 disposed between the reforming reaction part and the carbon monoxide reducing part and configured to guide a gas that has passed through the reforming reaction part to the carbon monoxide reducing part. The evaporating part and the carbon monoxide reducing part are arranged to be adjacent to each other such that, at least, a part of the evaporating part and a part of the carbon monoxide reducing part are heat exchangeable with each other.

Abstract: A fuel cell power generation system 100 includes a mechanism for detachably holding an adsorptive desulfurization section 5 for adsorbing a sulfur component in a hydrocarbon-based raw material; a reformer for generating hydrogen-containing gas from the raw material which has passed the adsorptive desulfurization section 5; a fuel cell 8 for generating power using the hydrogen-containing gas as a fuel; a raw material supply section 4 for controlling a flow rate of the raw material to be supplied to the adsorptive desulfurization section 5; and an operating control section 16 for controlling a behavior of the raw material supply section 4 and a behavior of the fuel cell 8.

Abstract: A hydrogen generator (100a) includes: a heater (1) which combusts a mixture gas of combustion fuel and combustion air to generate a combustion gas; a preheat evaporator (6) which heats a raw material and water by the combustion gas generated by the heater to generate a mixture gas of the raw material and the water; a reformer (2) which generates a hydrogen-containing gas by causing the mixture gas generated by the preheat evaporator to pass through a reforming catalyst (2a) heated by the combustion gas; and a shift converter (3) which incorporates a shift catalyst (3a) which reduces, by a shift reaction, carbon monoxide contained in the hydrogen-containing gas generated by the reformer, and further includes a water trapping portion (7) which traps liquid water discharged from the preheat evaporator, and the hydrogen generator (100a) is configured to carry out heat exchange between the hydrogen-containing gas supplied from the reformer to the shift converter and the water in the water trapping portion.

Abstract: A hydrogen generator according to the invention comprises: a combustion gas passage (5) configured to flow combustion gas coming from a combustor; a preheat-evaporator (6) which is supplied with a material gas and water and configured to evaporate the water and heat the material gas by heat transmitted from the combustion gas passage and a carbon monoxide reducer (10) through partition a wall; a reformer (7) configured to generate reformed gas from the material gas and steam fed from the preheat-evaporator by using a reforming catalyst (8) and heat transmitted from the combustion gas passage through the partition wall; the carbon monoxide reducer (10) configured to remove carbon monoxide from the reformed gas fed from the reformer by a carbon monoxide removing catalyst (9); a cylindrical body (3) closed at both ends thereof having an internal space is divided by the partition walls (1), (2), (30), (47) to form the combustion gas passage, preheat-evaporator, reformer and carbon monoxide reducer within the cyli

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.

Abstract: A hydrogen generating device including a temperature adjustment section 8 for controlling a temperature of a hydrogen-containing gas to be introduced from a reforming section 1 into carbon monoxide reducing sections 2 and 3, the temperature adjustment section 8 including: a heat exchange section 26 having an air path 11 for allowing a cooling air to pass therethrough; an air intake portion 10 having an opening for taking the cooling air into the air path 11; and an air discharging portion 12 having an opening for discharging the cooling air out of the air path 11, wherein the opening of the air intake portion 10 and that of the air discharging portion 12 are facing in a same direction, and the same direction is a vertically upward direction or a vertically downward direction.

Abstract: An object is to provide a hydrogen generation apparatus in which water can be helically flow down in an evaporator without fail, a method for manufacturing the hydrogen generation apparatus, and a fuel cell system using the hydrogen generation apparatus. The hydrogen generation apparatus includes a reformer configured to generate a hydrogen-containing gas; an evaporator 8 which includes an inner tube 9 and an outer tube 10, and a deformed hollow helical member 18 helically interposed between the inner tube 9 and the outer tube 10 and which is configured to evaporate the water supplied to the reformer 8; and a heat source 2 configured to evaporate the water. The evaporator 8 is configured such that the water is supplied to a helical flow channel 8A defined by the inner tube 9, the outer tube 10, and the hollow helical member 18 and evaporated by the heat source 2.

Abstract: A hydrogen generator is described, which comprises: a material supply device (4); a water supply device (5); an evaporator (10); a reforming catalyst layer (1) for generating reformed gas; a CO removing catalyst layer (2) configured to reduce the amount of carbon monoxide contained in the reformed gas generated by the reforming catalyst layer (1); a combustor (3) for heating the reforming catalyst layer (1) and the CO removing catalyst layer (2); a reforming temperature detector (9) for detecting the temperature of the reforming catalyst layer (1); a heater (7) for heating the CO removing catalyst layer (2); a CO removing temperature detector (8) for detecting the temperature of the CO removing catalyst layer (2); and a controller (16) configured to perform control such that the heater (7) heats the CO removing catalyst layer at the time of start-up and such that if the temperature detected by the CO removing temperature detector (8) becomes greater than or equal to a first specified value, the combustor (3)

Abstract: A hydrogen generator includes: a first tube (21), a first end of which is closed by a first lid plate (13); a combustor (6); a combustion gas passage (11); a second tube (22), a first end of which is closed by a second lid plate (14) having a hydrogen-containing gas flowing port (5) at a center thereof; a reformer (26) including a reforming catalyst layer (4); and a third tube (28), a first end of which is closed by a third lid plate (15), wherein: a plurality of hydrogen-containing gas rotational passages are formed in at least one of a second space (41) formed between the first lid plate (13) and a second lid plate (14) and a third space (42) formed between the second lid plate (14) and the third lid plate (15), so as to be arranged in a circumferential direction of the first tube (21); each of the rotational passages includes an entrance communicated with a first space (61) and an exit communicated with a fourth space (20) formed between the second tube (22) and the third tube (28); and a center of the ent

Abstract: A hydrogen generation device or a fuel cell system of the present invention can prevent deterioration or breakage of portions of the hydrogen generation device, which is caused by thermal stress attributable to repeated operation and halt. Thus, it is possible to increase the life and enhance the stability of the device and the system. A hydrogen generation device 76 of a fuel cell system 100 includes a hydrogen generation device main body 78 including a combustor 4 provided therein for combusting a predetermined medium capable of generating hydrogen and a plurality of pipes which are connected to the hydrogen generation device main body 78 for allowing the predetermined medium flow into or out of the hydrogen generation device main body 78. A temperature gradient is formed in the hydrogen generation device main body 78 by operation of the combustor 4, whereby a high temperature portion and a low temperature portion are formed in the hydrogen generation device main body 78.

Abstract: There is provided a hydrogen generator that prevents supply of droplets to a reforming catalyst layer and that exhibits stable performance. The hydrogen generator includes a water evaporation unit 7 to which a raw gas and water is supplied; a reforming catalyst layer 9 to which a gas mixture is supplied from the water evaporation unit 7; a burner 4 configured to mix and combust a fuel gas with air; a combustion exhaust gas flow channel 16 which is provided on an inner side of the water evaporation unit 7 and through which the combustion exhaust gas flows; and a conversion catalyst layer 10 which is disposed on an outer side of the water evaporation unit 7 and to which a reformed gas is supplied.