Abstract:
An evaporator arrangement is provided for generating a hydrocarbon/air or/and hydrocarbon/steam mixture that can be decomposed in a reformer for producing hydrogen. A burner/evaporator area, which has a combustion/mixing chamber (14), into which air or/and steam enters via an inlet opening arrangement (16), a hydrocarbon-evaporating device (24, 34), including a porous evaporator medium (24) and, associated with same, a first heating device (34) and a glow type igniting member (28) for igniting a hydrocarbon-containing mixture present in the combustion/mixing chamber (14).
Abstract:
An evaporator arrangement for generating a hydrocarbon/steam mixture that can be decomposed in a reformer for producing hydrogen comprises an evaporator area, which has a steam-generating means (32, R, 36, 38, 40), a mixing chamber (14), into which steam enters via an inlet opening arrangement (16), as well as a hydrocarbon-evaporating means (24, 28), comprising a porous evaporator medium (24) and a first heating means (28) associated with same.
Abstract:
An exhaust-gas purification installation for purifying exhaust gas from an internal combustion engine includes an exhaust-gas catalytic converter which is arranged in an exhaust pipe of the internal combustion engine and a catalytic fuel reformer for generating a hydrogen-containing reformer gas which can be fed to the exhaust pipe on an entry side of the exhaust-gas catalytic converter. It is possible for a hydrocarbon-containing fuel, which can be used to operate the internal combustion engine, to be fed to the fuel reformer in order to generate the reformer gas. An exhaust-gas heater can heat the exhaust-gas part-stream which is fed to the fuel reformer. In a method according to the invention, an exhaust-gas part-stream which is removed from the exhaust pipe is heated and fed to the fuel reformer.
Abstract:
A burner (1) for burning a gaseous oxidant with a gaseous fuel, with a combustion chamber (2), in which the combustion reaction takes place during the operation of the burner (2), has a wall structure (4) which defines the combustion chamber (2) on the inlet side and which has oxidant openings (5) for introducing the oxidant into the combustion chamber (2) and fuel openings (6), which are separate therefrom, for introducing the fuel into the combustion chamber (2). The wall structure (4) has an oxidant distributor space (7), which is fluidically connected with the oxidant openings (5) on the outlet side and is fluidically connected with at least one oxidant feed opening (9) on the inlet side, as well as contains a fuel distributor space (8), which is fluidically separated from the oxidant distributor space (7) and is fluidically connected on the outlet side with the fuel openings (6) and is fluidically connected with at least one fuel feed opening (10) on the inlet side. A plurality of oxidant feed openings (9) are formed in the wall structure (4) on a side facing away from the combustion chamber (2), a plurality of fuel feed openings (10) are formed in the wall structure (4) on the side facing away from the combustion chamber (2), and the oxidant feed openings (9) and fuel feed openings (10) are arranged next to each other and alternating with one another in a straight connection area (11).
Abstract:
A fuel cell module (1) with a fuel cell (2), a residual gas burner (4) and a heat exchanger (6). The service life of the module (1) can be improved by at least one compensator (27) for establishing a flow-carrying connection between the residual gas burner (4) and the heat exchanger (6).
Abstract:
A fuel cell system (1), especially in a motor vehicle, includes at least one fuel cell (2) for generating electricity, at least one reformer (3) for generating a reformat gas, a fuel supply means (13) for feeding fuel to the reformer (3), a recycling means (83), which has a recycling line (31) connected to the reformer (3) for feeding anode waste gas of the fuel cell (2) to the reformer (3), and an air supply means (17), which has an air line (18) connected to the reformer (3) separately from the recycling line (31) for feeding air to the reformer (3). To increase performance, the fuel supply means (13) may be designed such that fuel can be introduced with it into the recycling line (31).
Abstract:
The invention relates to a burner, in particular a residual gas burner for a fuel cell system. The burner includes a combustion chamber which is bordered by a supply wall and by a heat exchanger and which is encompassed at the sides by a burner wall. The heat exchanger is a cross-current heat exchanger having a primary path and a secondary path. The supply wall has a burner zone with oxidizer openings for oxidizer gas and with combustion gas openings for combustion gas and a bypass zone with bypass openings for bypass gas. The bypass zone is arranged in a section of the supply wall which is allocated to an area of the heat exchanger adjacent to the primary path and to the secondary path at the inlet end, so that the bypass gas or a bypass gas-burner exhaust gas mixture acts upon this area.
Abstract:
A fuel cell system includes a fuel cell (12), a burner (34), which can be operated with fuel or/and fuel cell waste gas as desired. A heat exchanger arrangement (32) is provided to transfer heat generated in the burner (34) to air to be fed into the fuel cell (12) or/and to hydrogen-containing gas to be fed into the fuel cell (12).
Abstract:
A fuel treatment device (2) converts a hydrocarbon-containing fuel into a fuel for a fuel cell (3). The fuel treatment device (2) has for this purpose a mixture formation space (7) for forming and processing a mixture of fuel and another component, a reformer (8) for converting the mixture into a synthesis gas and a desulfurization stage (9) for removing sulfur from the synthesis gas or from the mixture. The reformer (8) and desulfurization stage (9) are arranged adjacent to each other in a housing (10) along an axis of the housing (10).
Abstract:
A fuel treatment device (2) converts a hydrocarbon-containing fuel into a fuel for a fuel cell (3). The fuel treatment device (2) has for this purpose a mixture formation space (7) for forming and processing a mixture of fuel and another component, a reformer (8) for converting the mixture into a synthesis gas and a desulfurization stage (9) for removing sulfur from the synthesis gas or from the mixture. The reformer (8) and desulfurization stage (9) are arranged adjacent to each other in a housing (10) along an axis of the housing (10).