摘要:
To carry out a heterogeneously catalyzed reaction, a reaction mixture comprising hydrocarbon and water is fed onto a catalyst that is produced by compressing at least one catalyst powder into a highly compressed layer which forms a shaped body. The reaction mixture is pressed through the catalyst layer with a pressure drop.
摘要:
A reformation reactor, especially suitable for the reformation of methanol, includes a reaction zone in which a reformation catalyst is located and to which a gas mixture to be reformed can be supplied. The reactor includes an evaporator body that adjoins the reaction zone in a flush manner. The evaporator body has a porous, heat-conducting structure for providing the gas mixture to be reformed by mixing and evaporating the gas mixture components supplied to it and for two-dimensionally distributed supply of the gas mixture thus prepared and into the reaction zone. A starting phase can be provided for the operation of the reactor, in which the evaporator body is wetted by a fuel liquid film and, following the addition of oxygen, a flammable mixture results in the reaction zone that is catalytically oxidized. The evaporator body can be heated to operating temperature by the resultant combustion heat, after which a switch can be made to continuous operation of the reformation reactor.
摘要:
A device that stores a low molecular gas, such as hydrogen (H2), under high pressure includes having an inner shell and at least one outer sleeve surrounding the inner shell. The region between the inner shell and the outer sleeve is connected via at least one valve with a backflow prevention capability to the region surrounded by the inner shell. The valve is thereby formed so that low molecular gas which has diffused through the inner shell can flow back into the inner shell when there are suitable pressure conditions.
摘要:
A method for removing carbon monoxide from a gas stream, in which the gas stream loaded with CO is guided through a device, and the CO is removed from the gas stream through adsorption on the working electrode. As a function of an electrical voltage between the working electrode and the counter electrode, or between the working electrode and the reference electrode, an electrode cleaning mode is enabled by triggering a current flow between the working electrode and the counter electrode, and the CO adsorbed on the working electrode is oxidized to CO2.01.
摘要:
The invention relates to a method for operating a fuel cell system consisting of a fuel cell, a reformer for generating a hydrogen-rich gas, and a combustion chamber in which the fuel cell exhaust gases are oxidized to generate the heat energy required in the reformer. According to the invention, in those operating states in which the heat energy supplied to the reformer from the combustion chamber is insufficient, additional amounts of fuel and oxygen are supplied to the reformer, so that additional heat energy is produced directly in the reformer by the oxidation of the fuel. At the same time, during the oxidation of the fuel in the reformer, steam is produced that can be used in steam reformation. Advantageously, adjustment of the additional amount of fuel and the oxygen supplied is performed as a function of the reformer temperature.
摘要:
A container for receiving an operating medium for the operation of fuel cells has an inlet for a medium, a first outlet and a second outlet. The container is divided by at least one permeable component into at least an inlet-side interior space, and an interior space which is remote from the inlet. The first outlet is arranged in the inlet-side interior space and the second outlet is arranged in the interior space which is remote from the inlet.
摘要:
A vehicle has an internal-combustion engine drive and a fuel cell drive system. Liquid fuel is used to supply energy to the internal-combustion engine drive and the fuel cell system. The internal-combustion engine drive is used for starting the vehicle and for permitting its immediate movement after starting of the internal-combustion engine, as well as for heating the fuel cell system to a working temperature. After the working temperature is reached, the fuel cell is started. Subsequently, an electric driving motor, which is fed by the fuel cell system, alone or together with the internal-combustion engine drive, drives the movement of the vehicle.
摘要:
A device that stores a low molecular gas, such as hydrogen (H2), under high pressure includes having an inner shell and at least one outer sleeve surrounding the inner shell. The region between the inner shell and the outer sleeve is connected via at least one valve with a backflow prevention capability to the region surrounded by the inner shell. The valve is thereby formed so that low molecular gas which has diffused through the inner shell can flow back into the inner shell when there are suitable pressure conditions.
摘要:
A starter device, preferably for cold-starting, for fuel cell systems, including a current generation system, for generating electrical energy, and a gas generation system, for generating H2-rich gas for the current generation system. An internal-combustion engine generates mechanical energy, which can be connected to an air compressor for supplying air to the gas generation system via a drive shaft.
摘要:
A method for operating a system for the steam reforming of a hydrocarbon or hydrocarbon derivative starting substance includes, during the cold-starting of the system, at least part of a reforming reactor is used as a multi-function reactor unit. A fuel and an oxygen-containing gas is delivered to the reforming reactor as a catalytic burner unit in a first operating phase. In a subsequent second operating phase, the reforming reactor is a partial oxidation unit for the starting substance. Water may be added shortly before the second operating phase commences. Alternatively, or in addition thereto, the fuel flow rate may be increased with a rising temperature in the first operating phase or a substoichiometric oxygen flow rate may be set as early as in the first operating phase.