摘要:
A reactor system for reacting a hydrocarbon or hydrocarbon derivative charging material comprises a catalyst-coated reaction chamber, to which a reaction educt stream can be fed through a reaction chamber inlet, and electric heating means. The reaction chamber inlet has a flat, electrically heatable, catalyst-coated, and reaction educt stream-permeable heater, which covers at least partially the inlet cross section of the reaction chamber inlet and through which the educts for reacting the charging material can be fed at least in a start operating phase of the reactor system. An electric heater may be provided in front of the reaction chamber inlet, for the purpose of heating at least one reaction educt in a start operating phase and there are means for point-by-point injection of at least one reaction educt, heated in the heater, into the reaction chamber.
摘要:
A system for the water vapor reforming of a hydrocarbon includes a modular reactor unit of the plate stack and/or tube bundle type that, in an integrated manner, contains an evaporator, a prereforming unit, a main reformer, a CO removal unit and a catalytic burner unit. The evaporator and the main reformer are in a thermal contact with the catalytic burner unit and, the prereforming unit is in a thermal contact with the CO removal unit.
摘要:
A process for pretreating a catalyst material for catalysing a chemical reaction in a reactor, in particular for a reforming catalyst material for catalysing a methanol reforming reaction to obtain hydrogen, includes (1) subjecting the catalyst material to a hydrogen-containing gas mixture in a forming step, and (2) subsequently subjecting the catalyst material to an oxygen-containing gas mixture in a deactivating step.
摘要:
The invention relates to a process for operating a system for the water vapor reforming of a hydrocarbon, having an evaporator, a reforming reactor, a membrane module connected behind, and a catalytic burner device. According to the invention, a first part of the catalytic burner device is in thermal contact with the reforming reactor, and a second part of the burner device is in thermal contact with the evaporator. According to the process, a heating operation is carried out during the cold start of the system, in which, in a first operating phase, at least the evaporator and the reforming reactor are heated by the catalytic burner device, and in a second operating phase, a hydrocarbon/water vapor mixture is prepared in the evaporator at a water/hydrocarbon ratio which is higher than in the normal operation and is fed to the reactor, the substance mixture emerging from the reactor being fed by way of the membrane module to the catalytic burner device.
摘要:
A system for generating a high-hydrogen gas comprises a reformer for the catalytic water vapor reforming of a water vapor/fuel mixture while supplying thermal energy; a gas purification stage for removing carbon monoxide from the high-hydrogen gas while releasing heat; and devices for transmitting thermal energy from the gas purification stage into the reformer. The reaction rates in the reformer and in the gas purification stage are designed such that a defined temperature level is set automatically by the coupling of the two reactions.
摘要:
In a reforming reactor suitable particularly for the water vapor reforming of methanol in mobile applications such as vehicles, a reaction space is filled with a catalyst pellet fill and has a movable reaction space wall which exerts a position-fixing pressure onto the catalyst pellet fill. According to the invention, a filling device is provided through which catalyst material can be filled from the outside into the reaction space through a passage opening formed in one of the reaction space walls.
摘要:
A reformation reactor that can be used especially for steam reformation of methanol for generating hydrogen in motor vehicles operated by fuel cells. A gas stream to be reformed is conducted through a reaction chamber into which a charge of a catalyst material is added. A catalyst supply container connected with the reaction chamber is so arranged that the catalyst material is automatically added from the supply container to the reaction chamber.
摘要:
A fuel cell system includes a fuel cell unit having an anode side and a cathode side, anode-side feeding and outflow lines for the supply of fuel and removal of anode-side exhaust, and cathode-side feeding and outflow lines for the supply of oxygen and removal of cathode-side exhaust. The fuel cell system also includes means for electrically switching the fuel cell unit on and off depending on the available quantity of fuel.
摘要:
A flame colorant additive for methanol for the operation of a fuel cell system includes at least one of (1) NaCl; (2) an organic compound of an element of the first principal group or of the second principal group of the periodic table of elements; and/or (3) an organic compound of an element of the third secondary group or of the ninth secondary group of the periodic table of elements.
摘要:
A fuel cell system has at least one fuel cell and a hydrogen generating arrangement for feeding the fuel cell anode with a hydrogen-containing product gas from a conversion reaction of a hydrocarbon starting substance or hydrocarbon derivative with of water fed supplied by way of a water feeding system. Water recovery devices are provided for condensing water out of the process gas supplied by the hydrogen generating arrangement, and/or out of the cathode waste gas carried away from the fuel cell cathode, and returning the condensed-out water into the water feeding system.