Fuel cell reformer

A fuel cell reformer, comprising:

• a main body comprising a first pipe and a second pipe, the second pipe being disposed at an inner portion of the first pipe;
• a thermal source unit in the second pipe and for generating heat;
• a reforming reaction unit in a first region between the first pipe and the second pipe and for generating a reforming gas containing hydrogen through a reforming reaction of a fuel;
• a carbon monoxide reduction unit in a region other than the first region between the first pipe and the second pipe and for reducing a concentration of carbon monoxide contained in the reforming gas;
• and
• a thermal treatment unit for supplying thermal energy to the reforming reaction unit and to the carbon monoxide reduction unit at a time of initial driving of the reformer, wherein the thermal energy supplied to the reforming reaction unit corresponds to an operational temperature range of the reforming reaction unit that is unique, and the thermal energy supplied to the carbon monoxide reduction unit corresponds to an operational temperature range of the carbon monoxide reduction unit that is unique.