초록 ▼

In a device for providing heating energy to a gas-generating system by means of essentially complete catalytic combustion of a fuel on a suitable catalyst material, heat energy is transferred directly or by means of a heat-conducting medium from the catalytic burner to the gas-generating system. To

In a device for providing heating energy to a gas-generating system by means of essentially complete catalytic combustion of a fuel on a suitable catalyst material, heat energy is transferred directly or by means of a heat-conducting medium from the catalytic burner to the gas-generating system. To improve the starting behavior and the exhaust emissions, the device comprises three components that are at least temporarily traversed by fuel, with a cold-start component having an electrical heating device. The central component is preferably designed as a filter press with an integrated heat exchanger. A third, unheated, stage is also provided for residual gas combustion.

대표청구항 ▼

[ What is claimed is:] [13.] A method of operating a device for providing heat energy to a gas generating system during a startup operation phase of said device, wherein said device has a fuel flow line defining a fuel flow path for a gaseous mixture of fuel and a gas containing oxygen; a main heat

[ What is claimed is:] [13.] A method of operating a device for providing heat energy to a gas generating system during a startup operation phase of said device, wherein said device has a fuel flow line defining a fuel flow path for a gaseous mixture of fuel and a gas containing oxygen; a main heat generating component arranged in said fuel flow path and having a first combustion chamber containing a catalyst material, in which fuel is catalytically oxidized with the aid of said gas containing oxygen; means for transferring heat energy from the first combustion chamber to the gas-generating system; a cold-start component arranged in said fuel flow path in fuel flow communication with said main heat generating component and having a second combustion chamber containing a catalyst material for oxidation of fuel, said cold-start component being traversed at least temporarily by said mixture of fuel and a gas containing oxygen; and a residual fuel component arranged in said fuel flow path in fuel flow communication with said main heat generating component and said cold-start component, said residual fuel component being unheated and having a third combustion chamber for conversion of residual fuel; wherein the cold-start component has an electrical heater provided in the second combustion chamber therein, the cold-start component is located upstream of the main heat generating component relative to a flow direction of the fuel and gas mixture in the fuel flow path, the residual fuel component is located downstream of the main heat generating component in the first line, and a bypass line with a two-way control valve is interruptibly connected between an input and an output of the cold start component parallel to the cold-star component, said method comprising:upon initiating operation of said device at commencement of said startup operation phase, said heater heating said cold-start component to a temperature at which a chemical reaction commences therein;causing the fuel and gas mixture to flow through the cold-start component upon initiating operation of said device;detecting a temperature in the first combustion chamber; andwhen detected temperature in said first combustion chamber reaches a first predetermined value, causing said fuel and gas mixture to bypass the cold-start component by guiding the fuel and gas mixture through the bypass line.