摘要:
A chemical reactor (100) is described comprising a substrate (110) with a fluid channel (120) and a set of organized pillar structures (130) positioned in the channel (120). The individual pillar structures (130) have a length in the longitudinal direction of the channel (120) and a width in the width direction of the channel (120) whereby their width-to-length aspect ratio is at least 7.
摘要:
A reaction vessel (10) comprising a chemical heat storage material (30) for generating water vapor by reaction heat which is generated when the chemical heat storage material (30) reacts with water, and storing heat by heating to separate water from the chemical heat storage material (30); and a heat exchanger (40) that houses the chemical heat storage material (30). The heat exchanger (40) comprises a heat storage material housing space (42), a water flow path (44) comprised with a plurality of ejection outlets (50) in communication with the heat storage material housing space (42), a main tube (52) connected to an external water supply section, and a branch tube (54) in communication with the main tube (52) and the plurality of ejection outlets (50), and a heating medium flow path (46) through which a heating medium is caused to flow for heating the chemical heat storage material (30).
摘要:
A multiple adiabatic bed reforming apparatus and process involving stage-wise combustion and multiple reforming chambers. Co-flow and cross-flow occurs under laminar flow conditions. A reformer suitable for small scale production as well as large scale production. A passive stage-by-stage fuel distribution network suitable for low pressure fuel wherein the resistances in successive fuel distribution lines control the amount of fuel delivered to each combustion stage. Heat is captured from reforming syngas product to preheat gases before entering the reformer. Conditions that would produce unwanted coking or metal dusting are avoided or localized away from the heat exchangers to locations which can be cost effectively protected. A chemical reactor which has a core composed of a stack of metal plates that are diffusion bonded in face-to-face relationship.
摘要:
The invention provides methods and systems for catalytic reforming of a hydrocarbon fuel to produce hydrogen, which may be used as a power source for a fuel cell. In some embodiments, hydrogen is produced by partial oxidation or autothermal reforming of fuel in an oxygen containing gas stream that is rich the majority of the time, with periodic conversion to a lean gas stream for short periods of time to maintain catalytic activity. In one embodiment, hydrogen peroxide is used as the oxidant in an autothermal reforming process. In some embodiments, hydrogen is produced by steam reforming at a low steam to carbon ratio, with a periodic increase in the steam to carbon ratio for short periods of time to maintain catalytic activity.
摘要:
Hydrogen generation assemblies, components thereof, and fuel cell systems containing the same. In some embodiments, the hydrogen generation assembly includes a heater assembly having separate startup and primary burner assemblies that utilize different fuels. In some embodiments, the heating assembly is adapted to utilize a volume of liquid fuel to startup the hydrogen generation assembly, while in other embodiments a gaseous fuel is used. In some embodiments, the fuel used during start up includes at least 25 vol% water. In some embodiments, the fuel cell system has a rated power output in the range of 100-1000 watts. In some embodiments, the hydrogen generation assembly is a portable system.
摘要:
The invention relates to a device for producing a hydrogen-rich gas from a liquid, hydrogen-containing fuel by reforming reaction. The inventive device is provided with feed conduits for feeding educts and with discharge conduits for removing the reformed product, with at least one component for evaporating liquid educts, with at least one component for reformation, with at least one component for catalytically generating thermal energy and with at least one component for reducing the carbon monoxide content in the reformed product. At least two of the components are arranged on a common plate that consists of a porous layer produced by compressing a catalyst material. The reaction educts flow across and/or through said layer.
摘要:
An ionic conduction device (10) comprises a stack of layers (L1 to L3), each layer comprising an electrolyte membrane (12) having a pair of opposed surfaces, a gas permeable electrode (13, 14) in contact with each opposed surface, and there being a plurality of interconnects (15a to 15d) in electrical contact with the electrodes (13, 14) of the layers (L1 to L3), to provide electrical continuity through the stack, characterised in that there is at least one gas flow path though the layers (L1 to L3) and the interconnects of the stack.
摘要:
Planar ceramic membrane assembly comprising a dense layer of mixed-conducting multi-component metal oxide material, wherein the dense layer has a first side and a second side, a porous layer of mixed-conducting multi-component metal oxide material in contact with the first side of the dense layer, and a ceramic channeled support layer in contact with the second side of the dense layer. The planar ceramic membrane assembly can be used in a ceramic wafer assembly comprising a planar ceramic channeled support layer having a first side and a second side; a first dense layer of mixed-conducting multi-component metal oxide material having an inner side and an outer side, wherein the inner side is in contact with the first side of the ceramic channeled support layer; a first outer support layer comprising porous mixed-conducting multi-component metal oxide material and having an inner side and an outer side, wherein the inner side is in contact with the outer side of the first dense layer; a second dense layer of mixed-conducting multi-component metal oxide material having an inner side and an outer side, wherein the inner side is in contact with the second side of the ceramic channeled layer; and a second outer support layer comprising porous mixed-conducting multi-component metal oxide material and having an inner side and an outer side, wherein the inner side is in contact with the outer side of the second dense layer.