| 摘要 |
A cylindrical water vapor reforming unit comprising a plurality of cylindric al bodies consisting of a first cylindrical body, a second cylindrical body and a third cylindrical body of successively increasing diameters disposed in concentric spaced relation, a radiation cylinder disposed within and concentrically with the first cylindrical body, a burner disposed in the radial central portion of the radiation cylinder, and a reforming catalyst layer with a reforming catalyst filled into a gap between the first and seco nd cylindrical bodies, wherein a CO denatured catalyst layer and a CO removal catalyst layer are disposed in a gap between the second and third cylindrica l bodies, the CO denatured catalyst layer being formed in a gap with the direction of flow reversed at one axial end of the reforming catalyst layer and through a heat recovery layer of predetermined length. According to this reforming unit, without internally disposing a heat insulation layer, a cooling mechanism or the like, the reforming catalyst layer, CO denatured catalyst layer, and CO removal catalyst layer can be integrated, achieving various useful effects, including small-size and light-weight, and the shortening of the start time. |
