摘要:
An operational cycle for a fuel processor capable of reforming a fuel, the operational cycle is disclosed. The operational cycle includes: an off state; a manager check state entered into from the off state, and in which the operational readiness of the fuel processor is checked; a preheat state entered into from the manager check state, and in which the fuel processor preheats gases, including the fuel, for mixing into a process feed stream; a startup state entered into from the preheat state, and in which the fuel processor begins operating under start-up conditions; a run state entered into from the startup state, and in which the fuel processor reforms the process feed stream into a reformate under steady-state conditions; and a shutdown state entered into any one of the manager check state, preheat state, startup state, and run state. The operational cycle may be employed in a fuel processor for a fuel cell or a fuel cell power plant.
摘要:
A method and catalysts and fuel processing apparatus for producing a hydrogen-rich gas, such as a hydrogen-rich syngas are disclosed. According to the method a CO-containing gas, such as a syngas, contacts a water gas shift catalyst in the presence of water, preferably at a temperature of less than about 450°C, to produce a hydrogen-rich gas, such as a hydrogen-rich syngas. Also disclosed is a water gas shift catalyst comprising: a) Pt, its oxides or mixtures thereof; b) at least one of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, their oxides and mixtures thereof; and c) at least one of Sc, Y, Ti, Zr, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ir, Ni, Pd, La, Ce, Pr, Nd, Sm, Eu, their oxides and mixtures thereof. The WGS catalyst may be supported on a carrier, such as any one member or a combination of alumina, zirconia, titania, ceria, magnesia, lanthania, niobia, yttria and iron oxide. Fuel processors containing such water gas shift catalysts are also disclosed.
摘要:
A heat exchanger includes: a casing (21); an external cylinder (32) which is arranged inside the casing (21) with a clearance formed between the external cylinder (32) and an inner surface of the casing (21) and is supported in a cantilevered manner, has a closed end portion (32b), and forms a first fluid passage (81) between the external cylinder (32) and the casing (21); and an internal cylinder (40) which is arranged inside the external cylinder (32) with a clearance formed between the internal cylinder (40) and an inner surface of the external cylinder (32) and is supported in a cantilevered manner, is open at both ends, and forms a second fluid passage (71), which is turned around at the closed end portion (32b) of the external cylinder (32), between the internal cylinder (40) and the external cylinder (32).
摘要:
The invention relates to a method of producing synthesis gas containing hydrogen and carbon monoxide. The inventive method comprises the following: a step (a) in which a hydrocarbon mixture undergoes pre-reforming; a step (b) in which the pre-reformed mixture resulting from step (a) is reformed in a catalytic ceramic membrane reactor (RCMC) by an oxidising mixture containing oxygen in order to obtain the raw synthesis gas containing hydrogen, carbon monoxide, carbon dioxide and water, and an oxygen-depleted mixture; and steps involving the pre-heating of the different fluids used. The invention is characterised in that prior to step (b), the oxidising mixture is brought to a temperature of between 871 °C and 1300 °C and, preferably, a temperature of the order of 1000 °C.
摘要:
A novel apparatus and method is disclosed for a plasmatron fuel converter ('plasmatron') that efficiently uses electrical energy to produce hydrogen rich gas. The volume and shape of the plasma discharge is controlled by a fluid flow established in a plasma discharge volume. A plasmatron according to this invention produces a substantially large effective plasma discharge volume allowing for substantially greater volumetric efficiency in the initiation of chemical reactions within a volume of bulk fluid reactant flowing through the plasmatron.
摘要:
A hydrogen generator comprises therein a reformer, a Shifter, a material flow passage with first evaporator through which a material is supplied to the reformer, a reformed gas flow passage for leading the reformed gas derived from the reformer to the Shifter, a shifted gas flow passage through which a shifted gas derived from the Shifter is taken out, and second steam flow passage formed adjacent to the reformed gas flow passage to be located at upstream side of the Shifter. The second evaporator is provided within the second steam flow passage. Apart of heat of the reformed gas is recovered as latent heat by the second evaporator. Thereby, temperature of the Shifter is controlled.
摘要:
Disclosed is a reforming-catalyst composition, which comprises nickel oxide and lanthanum oxide as a catalytic material for inducing a reaction between stream and either one of methane, natural gas and town gas to produce a hydrogen-containing gas. The nickel oxide and lanthanum oxide are formed as a perovskite-structured compound partly or in their entirety. The reforming-catalyst composition may include an oxide consisting of either one of alumina, silica and zirconia, on which the perovskite-structured compound is formed to serve as a catalyst carrier. Further, the reforming-catalyst composition may include nickel or ruthenium supported by aforesaid catalyst carrier consisting of the perovskite-structured compound. The reforming-catalyst composition of the present invention allows highly concentrated hydrogen to be produced at a low S/C ratio in steam reforming of methane, natural gas or town gas, while maintaining catalytic activity over a long time-period.
摘要:
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.
摘要:
Ein Reaktorsystem dient zur Umsetzung eines Kohlenwasserstoff- oder Kohlenwasserstoffderivat-Einsatzstoffs. Es umfasst einem katalysatorbelegten Reaktionsraum, dem wenigstens ein Reaktionseduktstrom über einen Reaktionsraumeintritt zuführbar ist, und elektrische Heizmitteln, die eine vor dem Reaktionsraumeintritt befindliche elektrische Heizvorrichtung zum Aufheizen wenigstens eines Reaktionseduktes in einer Startbetriebsphase beinhalten. Dabei weisen die elektrischen Heizmittel Mittel zum punktuellen Einbringen des wenigstens einen in der Heizvorrichtung (41) aufgeheizten Reaktionseduktes in den Reaktionsraum (45) an einer oder mehreren Stellen des Eintrittsquerschnitts (47) für Reaktionsedukte auf.