DEVICE FOR CLEANING AN EXHAUST GAS OF A DIRECT-ALCOHOL FUEL CELL OR A FUEL CELL STACK THEREWITH

摘要

The invention relates to a device for cleaning waste gases for a direct alcohol fuel cell or for a direct alcohol fuel cell stack, comprising at lea st one supply line for supplying an oxidizing agent into a cathode space of a fuel cell and at least one evacuation line for evacuating waste gas out of a fuel cell. The supply line and evacuation line are arranged next to one another at least in one area and are separated by a porous layer. A catalyti c converter is placed on the surface of the porous layer oriented toward the evacuation line. In the inventive waste gas cleaning device, the advantages of an internal utilization of heat and of an at least partial water circuit wit h an effective catalytic conversion and reduction of removed non-converted alcohol, particularly methanol, locally unite at one location of the fuel ce ll system. The waste gas cleaning device simultaneously serves to preheat and w et the supplied oxidizing agent and can be advantageously provided with a very compact design.