Fuel cell device

A fuel cell device configured to be operated with a natural gas, having a fuel cell unit (12) and an anode gas processor (14) arranged upstream of the fuel cell unit (12), which anode gas processor is configured to prepare the natural gas for use in the fuel cell unit (12) and which comprises a desulfurization unit (18), which is configured to desulfurize the natural gas, an oxidation unit (20), which is configured to perform partial oxidation, and a reformer unit (22), which is configured to produce at least one fuel gas, characterized by a recirculation unit (16), which is configured to supply at least a proportion of an anode waste gas from the fuel cell unit (12) to the anode gas processor (14), wherein the anode waste gas is delivered to the anode gas processor upstream of the desulfurization unit (18), and wherein the anode waste gas supplied by the recirculation unit (16) comprises steam and hydrogen.