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:
When a hydrogen producing apparatus is stopped, the flow rates of a hydrocarbon-type fuel feedstock, water and an oxygen-containing oxidant gas are decreased respectively. A random decrease of the flow rates, however, invites a rapid increase in the temperature of a catalyst beyond the limit of thermal resistance, resulting in deactivation of the catalyst. Further, this poses a danger, for example, that the residual hydrocarbon-type fuel in the apparatus may be mixed with the oxidant gas after the stopping of the apparatus. Thus, in stopping the operation, the present invention exerts such control as to decrease the flow rate of the hydrocarbon-type fuel and simultaneously increase the flow rate of water while maintaining the flow rate of the oxidant gas at a constant level, stop the hydrocarbon-type fuel, and thereafter stop the water and the oxidant gas.
摘要:
Since carbon monoxide is generated as subcomponent in a water vapor reforming reaction, in many cases, a shifter for conducting a shift reaction on water and carbon monoxide is used in combination. Generally, in the case of a stable operation, a concentration of carbon monoxide hardly increases. However, when using conditions of a catalyst are changed due to external factors in the shifter, a concentration of carbon monoxide increases. A device includes a reformer 1 containing carbon monoxide and water vapor, and a shifter 3 having a shift catalyst body 3a, and the device supplies hydrogen gas to the shifter from a gas supply part 1. In the above device, carbon monoxide concentration detection means 6 is provided at an exit of hydrogen gas of the shifter. When a concentration of carbon monoxide that is detected by the carbon monoxide concentration detection means is larger than a set value, a quantity of water vapor is increased in the gas supply part 1.
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:
A hydrogen producing apparatus comprising: a reforming section having a reforming catalyst which causes a reaction between a carbon-containing organic compound as a feedstock and water; a feedstock supply section for supplying the feedstock to the reforming section; a water supply section for supplying water to the reforming section; a heating section for heating the reforming catalyst; a shifting section having a shift catalyst which causes a shift reaction between carbon monoxide and water contained in a reformed gas supplied from the reforming section; and a purifying section having a purifying catalyst which causes oxidation or methanation of carbon monoxide contained in a gas supplied from the shifting section, wherein the shift catalyst comprises a platinum group metal and a metal oxide.
摘要:
A fuel cell electric power generating system is provided which does not occupy a large space, which requires a lower initial cost for equipment than the prior art, and of which the running cost is low. The system includes a reformer 1 producing hydrogen-rich gas by utilizing a source gas, source gas supplying means 3a of supplying the source gas to the reformer 1, air supplying means 5 of supplying purging air to the reformer, and a fuel cell 9 generating electric power by utilizing the hydrogen-rich gas produced at the reformer 1 and air for electric power generation supplied from outside, wherein in stopping the operation of the fuel cell 9, the supply of the source gas to the reformer 1 is stopped and the hydrogen-rich gas remaining within the fuel cell electric power generating system, steam and the purging air are passed in this order.
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:
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:
In order to provide a step capable of reliably detecting a CO concentration in a reformed gas at low cost and a hydrogen purifier capable of fully exerting a function of a CO purifying catalyst, a gas concentration detector comprising a reaction chamber which has a catalyst layer and a gas temperature detector and capable of detecting the concentration of carbon monoxide in the gas by means of a signal of the temperature detector referring to a reformed gas passing along through the reaction chamber.
摘要:
A waste plastic disposal apparatus (K1-K4) comprises a storage section (2) having a cover (2b), a waste plastic heating unit (7) having a heater (7b) and a fan (7a), a hot air circulating path (20) formed by the storage section (2) and the heating unit (7) so as to circulate hot air, an exhaust path (10) branching from the hot air circulating path (20), and a deodorizing unit (9) provided in the exhaust path (10), the exhaust path (10) permitting an amount of hot air equal to a predetermined amount of outside air, which is taken into the hot air circulating path (20) every unit time, to be discharged therefrom through the deodorizing unit (9).