NOVELTY - Reforming apparatus includes a reforming unit having a reforming room composed of a reforming tube whose one end is connected to the branch port and from the other end of the tube a reformed gas is discharged, or configured by disposing at least 2 of the reforming tubes parallel to each other. A feedback mechanism passes the reformed gas around the outer periphery of the reforming tubes and sending the gas to the manifold.    USE - For converting gas mixture containing a fuel gas, steam and air, into hydrogen (claimed).    ADVANTAGE - The inventive apparatus is capable of eliminating irregularities in the flow of gas in the reforming catalyst and causing the gas mixture to contact the reforming catalyst efficiently. It reduces heat losses from the reforming catalyst to the outside thus increasing endothermic reforming reaction. It provides reduced concentration of CO in the refined gas.    DETAILED DESCRIPTION - Reforming apparatus (110) comprises:    (a) heating unit (104) for evaporating and heating a gas mixture (102);    (b) distribution tube (108) for distributing the heated gas mixture evenly to branch ports disposed one end of the tube;    (c) reforming unit (114) filled with a reforming catalyst for catalyzing the gas mixture;    (d) manifold (116) having the distribution tube on the inside of the manifold;    (e) carbon monoxide (CO) removal unit (124) filled with a CO removal catalyst used to remove CO from the gas reformed in the reforming unit; and    (f) casing (126) for housing the reforming unit, the manifold and the CO removal unit.    The reforming unit comprises a reforming room (132) having a reforming tube (130) with one end connected to the branch port and the other end is where the reformed gas is discharged or configured by disposing the reforming tubes parallel to each other, and a feedback mechanism for passing the reformed gas around the outer periphery of the reforming tubes and sending the gas to the manifold.    DESCRIPTION OF DRAWING(S) - The figure shows a configuration of the reforming apparatus.    Gas mixture (102)    Heating unit (104)    Distribution tube (108)    Reforming apparatus (110)    Reforming unit (114)    Manifold (116)    CO removal unit (124)    Casing (126)    Reforming tube (130)    Reforming room (132)