Apparatus for reforming fuel

A reforming apparatus that converts a gas mixture (102) comprising a fuel gas, steam and air, into hydrogen; a reforming apparatus comprising a heating unit (104) for evaporating and heating the gas mixture, a distribution tube (108) that distributes the heated gas mixture evenly to a plurality of branch ports (106) disposed at one end thereof, a reforming unit (114) filled with a reforming catalyst (112) for catalyzing the gas mixture, a manifold (116) comprising the distribution tube on the inside thereof, a CO removal unit (124) filled with a CO removal catalyst (122) used to remove CO from the gas (118) reformed in the reforming unit, and a casing (126) for housing the reforming unit, the manifold and the CO removal unit, wherein the reforming unit comprises a reforming room (132) composed of a reforming tube (130) of which one end is connected to the branch port and from the other end of which the reformed gas is discharged, or configured by disposing two or more of the reforming tubes parallel to each other, and a feedback mechanism (134) for passing the reformed gas around the outer periphery of the reforming tubes and sending the gas to the manifold.