NOVELTY - The reformer for reacting fuel and oxidizing agent to gaseous reformat, comprises an oxidation zone (10), an evaporation zone (16), a catalytic hydrogen (H2) production zone (20), mixing and feeding means (28), and recirculation means (26). A gaseous mixture of fuel and oxidant can be fed to the oxidation zone for oxidation purposes and a process during which oxidant-containing exhaust gas is produced. The fuel and an evaporator gas can be fed to the evaporation zone so as to produce a fuel-containing evaporator gas mixture and an ignitable reforming gas mixture containing evaporated fuel.    USE - Reformer for reacting fuel and oxidizing agent to gaseous reformat (claimed).    ADVANTAGE - The reformer for reacting fuel and oxidizing agent to gaseous reformat prevents an ignitable gas mixture from forming in the evaporator zone in order to ensure stable operation of the reformer.    DETAILED DESCRIPTION - The reformer for reacting fuel and oxidizing agent to gaseous reformat, comprises an oxidation zone (10), an evaporation zone (16), a catalytic hydrogen (H2) production zone (20), mixing and feeding means (28), and recirculation means (26). A gaseous mixture of fuel and oxidant can be fed to the oxidation zone for oxidation purposes and a process during which oxidant-containing exhaust gas is produced. The fuel and an evaporator gas can be fed to the evaporation zone so as to produce a fuel-containing evaporator gas mixture and an ignitable reforming gas mixture containing evaporated fuel and oxidant-containing exhaust gas can be fed to the catalytic H2 production zone so as to produce the gaseous reformat. The mixing and feeding means to which oxidant-containing exhaust gas can be fed from the oxidation zone and fuel-containing evaporator gas mixture can be fed from the evaporation zone are disposed upstream of an inlet of the catalytic H2 production zone so as to produce the reforming gas mixture and feed the reforming gas mixture into the catalytic H2 production zone. The recirculation means are provided for recirculating reformat produced in the catalytic H2 production zone into the evaporation zone as evaporator gas. The mixing and feeding means are designed as injector nozzle that is driven by the oxidant-containing exhaust gas. The recirculating means consists of heat exchanger means for the cooling of the recirculated reformat and/or for the introduction of the soot oxidation in the evaporator. The heat exchanger means are formed connectible and disconnectible according to the requirement. The recirculation means set for the removal of reformat from the catalytic hydrogen production zone at an anode exhaust gas line of a fuel cell stored back to the catalytic hydrogen production zone. Between the mixing and feeding means and the evaporation zone gas cleanup means are intended for the removal of contamination from the evaporator gas mixture. An INDEPENDENT CLAIM is included for a procedure for reacting fuel and oxidizing agent to gaseous reformat.    DESCRIPTION OF DRAWING(S) - The figure shows a structure of a reformer for reacting fuel and oxidizing agent to gaseous reformat.    Oxidation zone (10)    Evaporation zone (16)    Catalytic hydrogen production zone (20)    Recirculation means (26)    Mixing and feeding means. (28)