摘要:
Disclosed is a hydrogen generator that prevents the reformate water from bypassing the evaporator in a hydrogen generator, and the occurrence of sudden temperature changes within an evaporation flow path. The hydrogen generator comprises: an evaporator that produces a mixed gas by mixing a raw material gas containing methane with water vapor; a reformer that changes the mixed gas into a hydrogen-containing gas through a steam reforming reaction; and a combustor that supplies heat to the evaporator and the reformer. The evaporator comprises: an inner cylinder; an outer cylinder enclosing the inner cylinder; and a middle cylinder that is inserted between the inner cylinder and the outer cylinder, and that defines a helical flow path between the inner cylinder and the outer cylinder, through which water supplied from the outside flows.
摘要:
Disclosed is a hydrogen generator that prevents the reformate water from bypassing the evaporator in a hydrogen generator, and the occurrence of sudden temperature changes within an evaporation flow path. The hydrogen generator comprises: an evaporator that produces a mixed gas by mixing a raw material gas containing methane with water vapor; a reformer that changes the mixed gas into a hydrogen-containing gas through a steam reforming reaction; and a combustor that supplies heat to the evaporator and the reformer. The evaporator comprises: an inner cylinder; an outer cylinder enclosing the inner cylinder; and a middle cylinder that is inserted between the inner cylinder and the outer cylinder, and that defines a helical flow path between the inner cylinder and the outer cylinder, through which water supplied from the outside flows.
摘要:
A fuel treatment device includes: a reforming section that produces a hydrogen-rich gas containing carbon monoxide and water; a converting section that produces a hydrogen-rich gas containing a lower concentration of carbon monoxide by reacting the carbon monoxide and the water in the hydrogen-rich gas; a mixing channel that produces a mixed gas by mixing the hydrogen-rich gas containing the lower concentration of the carbon monoxide with air containing oxygen; an air supplying section that is connected to an upstream end of the mixing channel and supplies the air to the mixing channel; and a selective oxidizing section that is connected to a downstream end of the mixing channel and converts the mixed gas into a fuel gas by reacting the carbon monoxide and the oxygen in the mixed gas, wherein the mixing channel includes a gas supply region at the upstream side and a gas diffusion region at the downstream side, and has two or more gas supply ports connecting the gas supply region with the converting section, and a length of the gas diffusion region is 0.5 to 2 times a length of the gas supply region.
摘要:
A fuel treatment device includes: a reforming section that produces a hydrogen-rich gas containing carbon monoxide and water; a converting section that produces a hydrogen-rich gas containing a lower concentration of carbon monoxide by reacting the carbon monoxide and the water in the hydrogen-rich gas; a mixing channel that produces a mixed gas by mixing the hydrogen-rich gas containing the lower concentration of the carbon monoxide with air containing oxygen; an air supplying section that is connected to an upstream end of the mixing channel and supplies the air to the mixing channel; and a selective oxidizing section that is connected to a downstream end of the mixing channel and converts the mixed gas into a fuel gas by reacting the carbon monoxide and the oxygen in the mixed gas, wherein the mixing channel includes a gas supply region at the upstream side and a gas diffusion region at the downstream side, and has two or more gas supply ports connecting the gas supply region with the converting section, and a length of the gas diffusion region is 0.5 to 2 times a length of the gas supply region.
摘要:
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.
摘要:
A fuel cell separator having a turn portion of a serpentine-shaped reaction gas passage region. In the turn portion, a recessed portion is defined by an outer end of the turn portion and oblique boundaries between the recessed portion and a pair of passage groove group. In the turn portion, a plurality of protrusions, which vertically extend from a bottom face of the recessed portion and are arranged in an island form, are disposed such that one or more protrusions form a plurality of columns lined up and spaced apart from each other with a gap in a direction in which the outer end extends and one or more protrusions form a plurality of rows lined up and spaced apart from each other with a gap in a direction perpendicular to the direction in which the outer end extends.
摘要:
A fuel cell separator (2) of the present invention has a turn portion of a serpentine-shaped reaction gas passage region (101). In the turn portion, a recessed portion (28) is defined by an outer end (28a) of the turn portion and oblique boundaries between the recessed portion (28) and a pair of passage groove group. In the turn portion, a plurality of protrusions (27), which vertically extend from a bottom face of the recessed portion (28) and are arranged in an island form, are disposed such that one or more protrusions (27) form a plurality of columns lined up and spaced apart from each other with a gap in a direction in which the outer end (28a) extends and one or more protrusions (27) form a plurality of rows lined up and spaced apart from each other with a gap in a direction perpendicular to the direction in which the outer end (28a) extends; and the plurality of protrusions (27) are configured such that flow of the reaction gas is guided by protrusions (27) forming one row in the direction in which the outer end (28a) extends and is disturbed by protrusions forming a row adjacent the one row.
摘要:
An object of the present invention is to provide a fuel processor that can reduce reforming catalyst deterioration caused by thermal deformation of a structure. The fuel processor includes a reformer 8 that is fed with fuel gas 70 to refine hydrogen-rich reformed gas 73 by a reaction of a reforming catalyst 7. A plurality of partition plates 20 for dividing the reforming catalyst 7 are provided in a space filled with the reforming catalyst 7 between an internal cylinder 18 and an external cylinder 19. All the partition plates 20 are cantilevered from the external cylinder, preventing the partition plates 20 from coming into contact with each other in temperature variations. This can reduce deterioration such as crushing or powdering that is caused by a compressive stress of the reforming catalyst 7.
摘要:
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.
摘要:
An object of the present invention is to provide a fuel processor that can reduce reforming catalyst deterioration caused by thermal deformation of a structure. The fuel processor includes a reformer 8 that is fed with fuel gas 70 to refine hydrogen-rich reformed gas 73 by a reaction of a reforming catalyst 7. A plurality of partition plates 20 for dividing the reforming catalyst 7 are provided in a space filled with the reforming catalyst 7 between an internal cylinder 18 and an external cylinder 19. All the partition plates 20 are cantilevered from the external cylinder, preventing the partition plates 20 from coming into contact with each other in temperature variations. This can reduce deterioration such as crushing or powdering that is caused by a compressive stress of the reforming catalyst 7.