摘要:
A hydrogen generating part is provided for reacting water and a raw material composed of carbon and hydrogen atoms to generate hydrogen gas, a raw material supply part is provided for supplying a raw material to the hydrogen generating part, a water supply part is provided for supplying water to the hydrogen generating part, a catalyst combustion part is provided, an air supply part is provided for supplying air to the catalyst combustion part, a path switching part is provided for switching raw material supply paths between the raw material supply part and the hydrogen generating part, a bypass path is provided for supplying a raw material to the catalyst combustion part from the path switching part, and a combustion gas path is provided for supplying combustion gas after the catalyst combustion part to the hydrogen generating part. The control part switches the path switching part, and the inside of the hydrogen generating part is replaced with combustion gas after the catalyst combustion part.
摘要:
In a hydrogen generator comprising a reforming unit having a material supply unit and a water supply unit, and a burner for heating the reforming unit, having a fuel supply unit and an air supply unit, a control unit is arranged for controlling the amount of air to be supplied from the air supply unit to the burner, based on the temperature of the reforming unit and the amount of a raw material supplied to the reforming unit, in order to make the combustion state of the burner stable so as to improves the operation and convenience thereof.
摘要:
The present invention relates to an electric power generator and its operation method, which electric power generator is equipped with a hydrogen generator, a polymer electrolyte fuel cell for generating electric power using hydrogen rich gas from the hydrogen generator, a burner for burning the hydrogen generator, a flow rate controller for controlling the supply amount of a burning fuel to the burner, a communicating pathway connecting the flow rate controller and the burner, a joint where at least a residual fuel gas from a fuel electrode of the fuel cell and/or an incompletely generated gas from the hydrogen generator are combined into the communicating pathway, and a pressure-transferring pipe for releasing the pressure between the joint and the flow rate controller into the flow rate controller; the electric power generator being characterized in that the flow rate controller controls the supply amount of the burning fuel on the basis of the above-mentioned pressure.
摘要:
For obtaining a catalytic combustor which utilizes radioactive heat with a high efficiency or economically, has a radiation wavelength distribution rich in visible ray components, and is excellent in complete combustibility and visual confirmability even in a standby combustion condition at a low combustion rate, the present invention forms a thin film coat of a metal or a metal oxide which transmits rays having short wavelengths and reflects rays having long wavelengths on a surface of a transmission window opposed to an upstream surface of a catalyst body. Further, a metal catalyst body composed of a metal wire structure having a high aperture ratio is disposed in a combustion chamber which comprises a catalyst body in a downstream region and a heat ray transmissive body disposed on a side wall thereof so that one end of the metal catalyst body is disposed in the vicinity of the catalyst and the other end is directed upstream. Furthermore, an auxiliary catalyst body which has a high aperture ratio and a small capacity is disposed in the vicinity of a mixed gas injection port at a location which is brought into contact with flow lines when an amount of the mixed gas is not larger than a definite value. Moreover, a freely openable/closable cover having reflectivity to heat rays is disposed in the vicinity of an outside surface of the transmission window. In addition, an air flow path is formed between the transmission window and a second transmission window, and a thin film coat which reflects radioactive heat rays having long wavelengths is disposed on an inside surface of the second transmission window.
摘要:
A fuel cell system comprising: a reforming section; a feedstock supply section for the reforming section; a water supply section for the reforming section; a fuel cell; a burner for the reforming section; an air supply section for the burner; a fuel supply section for the burner; a fuel supply conduit for supplying the fuel and an off-gas from the fuel cell to the burner; and a flame trap section provided to the fuel supply conduit, wherein heating means for heating the flame trap section is further provided in order to stop a backfire without clogging the fuel supply conduit.
摘要:
To provide a fuel cell power generator capable of reliably recognizing ignition and misfire of a burner for heating a fuel gas generator and operating safely, a fuel cell power generator comprising, a fuel gas generator for generating a fuel gas composed mainly of hydrogen from a raw material for power generation and water, a water feeder for feeding water to the fuel gas generator, and a fuel cell for performing power generation using the fuel gas and oxidant gas is provided with: a burner for heating the fuel gas generator by combusting at least one combustion fuel selected from the group consisting of the raw material for power generation, the fuel gas, and an off-gas discharged from a fuel cell; and a flame detector for detecting the state of a flame formed in the burner.
摘要:
A catalytic combustion apparatus with good exhaust gas characteristics, which effectively uses radiation from a catalyst body and which enhances the heat exchanger efficiency. The apparatus comprises a plate-shaped catalyst body (7) having communication holes for combustion of a mixture of fuel gas and air, and a combustion chamber (6) which receives therein the catalyst body (7) and of which a part of side walls is defined by a radiation heat receiving plate (11) facing either of both surfaces of the catalyst body (7).
摘要:
A catalytic combustion apparatus with good exhaust gas characteristics, which effectively uses radiation from a catalyst body and which enhances the heat exchanger efficiency. The apparatus comprises a plate-shaped catalyst body (7) having communication holes for combustion of a mixture of fuel gas and air, and a combustion chamber (6) which receives therein the catalyst body (7) and of which a part of side walls is defined by a radiation heat receiving plate (11) facing either of both surfaces of the catalyst body (7).
摘要:
Disclosed is a hydrogen generator that simplifies a gas passage, improves durability, and makes evaporation state of steam uniform, and a fuel cell system comprising the hydrogen generator. A hydrogen generator (10) comprises a first tubular wall element (11), a second tubular wall element (12) disposed outside the first tubular wall element (11) and coaxially with the first tubular wall element (11), and a water evaporator (13) and a reforming catalyst body (14) which are arranged in an axial direction of the first and second tubular wall elements(11, 12) in a tubular space formed between the first and second tubular space (11, 12), a water inlet (41i) from which water is supplied to the water evaporator (13), and a feed gas inlet (40i) from which a feed gas is fed to the water evaporator (13).
摘要:
In order to obtain a catalytic combustor having a high radiation heat utilization efficiency, a high economic efficiency, and a radiation wavelength distribution abundant in visible light components, and being excellent in the complete combustibility, which is kept stable even in a stand-by combustion state at a low combustion rate, and in the visual ascertainability, the surface of a heat ray transmittable window which is opposed to an upstream side surface of a catalyst is coated with a thin film of a metal or a metal oxide which transmits short wavelength light therethrough and reflects long wavelength light thereof. In a combustion chamber provided with a catalyst in a downstream side region and a heat ray transmittable member on a side wall, a metal catalyst comprising a metal wire rod of a large numerical aperture is provided so that one end thereof is set close to the catalyst with the other end thereof directed toward an upstream side portion of the combustion chamber. An auxiliary catalyst of a large numerical aperture and a small capacity is also provided in a position, which is in the vicinity of a gaseous mixture ejection port, in which the auxiliary catalyst contacts a stream line occurring when the amount of the gaseous mixture becomes not higher than a predetermined level. A heat ray reflecting openable cover is provided close to an outer surface of the transmittable window. An air flow passage is provided between the transmittable window and a second transmittable window, the inner surface of which is coated with a long wavelength radiation heat ray reflecting thin film.