Patent application number | Description | Published |
20080199745 | METHOD OF DRIVING HEATING UNIT FOR REFORMER, AND REFORMER AND FUEL CELL SYSTEM INCLUDING THE SAME - A method of driving a heating unit for a fuel cell reformer, a reformer applied with the method for driving the heating unit, and/or a fuel cell system including the reformer. The method includes: supplying an oxidant to the heating unit and absorbing the oxidant by a fuel oxidizing catalyst of the heating unit; supplying a fuel at an excessive amount to the heating unit and absorbing the fuel by the fuel oxidizing catalyst of the heating unit; and supplying the fuel and the oxidant to the heating unit at a stoichiometric ratio of the fuel to the oxidant ranging from 1:1 to 2:1, wherein the heating unit generates heat through an oxidizing catalyst reaction between the fuel and the oxidant. | 08-21-2008 |
20080206613 | Reformer for fuel cell, and fuel cell system comprising the same - A reformer for a fuel cell system includes a heating source for generating heat by a reaction of a fuel and an oxidant using an oxidizing catalyst, and a reforming reaction part for generating hydrogen by a reforming catalyst reaction. The oxidizing catalyst includes a solid acid, including a strong acid ion and an inorganic oxide, and a platinum-based metal. The reformer for a fuel cell system can start a fuel oxidation catalyst reaction at a low temperature with the heating source having a simplified structure. | 08-28-2008 |
20080241019 | REACTION VESSEL AND REACTION DEVICE - Provided is a reaction vessel for a fuel cell, and more particularly to a reaction vessel exhibiting improved thermal efficiency, and a reaction device for a steam reforming reaction for a fuel cell. The reaction device includes a cylindrical reaction catalyst chamber on which a target reaction catalyst for a predetermined target reaction is disposed; and a tubular oxidation catalyst chamber surrounding the reaction catalyst chamber, comprising an oxidation reaction catalyst therein. The reaction device according features an increased contact area between catalyst and gas, and rapidly heating of the gas in contact with the catalyst to a desired reaction temperature. | 10-02-2008 |
20080268301 | Fuel reforming apparatus and its method of driving and fuel cell system including the apparatus - A fuel reforming apparatus includes an oxidation reaction unit in which an oxidation catalyst is formed, a reforming reaction unit in which a reforming catalyst is formed, and an ignition unit for igniting a hydrocarbon-containing fuel and an oxidant and preheating the oxidation catalyst in an early driving stage. The oxidation reaction unit has a first section and a second section respectively formed opposite to each other with the oxidation catalyst interposed therebetween and forms a stream of the fuel and the oxidant flowing to the second section through the oxidation catalyst from the first section, the ignition unit being located in the second section. | 10-30-2008 |
20080268312 | Desulfurizing device for fuel cell and fuel cell system including the same - A desulfurizing device for a fuel cell includes a dehydrating element for absorbing moisture in a hydrocarbon fuel, and a desulfurizing element for absorbing a sulfur compound included in the hydrocarbon fuel that flows out of the dehydrating element. In another embodiment, the desulfurizing device for a fuel cell includes a dehydrating element for absorbing moisture included in a fuel, and a desulfurizing element. The desulfurizing element absorbs a sulfur compound included in the fuel flowing out of the dehydrating element if temperature of the desulfurizing element is below a predetermined temperature, and the desulfurizing element desorbs a sulfur compound included in the desulfurizing element whenever the desulfurizing element is heated above the predetermined temperature. | 10-30-2008 |
20090107662 | EVAPORATOR FOR FUEL CELL SYSTEM - An evaporator for a fuel cell system generating steam used for a steam reforming reaction provides an evaporator including a body having an inner space formed by a hollow for allowing a flow of a fluid, and a plurality of cell barrier members dividing the inner space into a plurality of spaces and having heat conductivity. The spaces include at least one first space for allowing a flow of a flue gas and at least one second space for allowing a flow of water. | 04-30-2009 |
20090169932 | FUEL CELL SYSTEM AND REFORMER - A fuel cell system and a reformer for a fuel cell system prevents backfire and improves efficiency of heat transfer. The fuel cell system includes a reformer generating hydrogen gas from fuel including hydrogen by a catalytic chemical reaction using heat energy, and at least one electricity generating unit generating electrical energy by an electrochemical reaction between the hydrogen gas and oxygen. The reformer includes a case, a heat source, and a reforming reaction part. The case forms an external shape. The heat source is disposed in the case to generate heat energy by an oxidation reaction between fuel and a catalyst, and includes a mesh, an oxidation catalyst layer formed on a surface of the mesh, and at least one fuel injection nozzle supplying the fuel to the oxidation catalyst layer. The reforming reaction part is disposed in the case to generate hydrogen gas from fuel using the heat energy generated from the heat source. | 07-02-2009 |
20100196776 | AUTO IGNITION TYPE AUTOTHERMAL REFORMER AND FUEL CELL SYSTEM HAVING THE SAME - An auto ignition type autothermal reformer (ATR) performs reproducible ignition using a catalyst that performs ignition without a separate ignition unit, such as an igniter or heating wire, and a fuel cell system having the ATR. The ATR includes a reaction container having a first opening through which a fuel is introduced into the reaction container and a second opening through which a reformate is discharged from the reaction container, the fuel having a mixture of an aqueous primary fuel solution and hydrogen peroxide; a first catalyst disposed adjacent to the first opening in the reaction container, the first catalyst being a granular catalyst; a second catalyst disposed at the rear portion of the first catalyst to promote an autothermal reforming reaction; and a third catalyst disposed at the rear portion of the second catalyst to promote an oxidation reaction. | 08-05-2010 |