| 摘要 |
PURPOSE:To prevent the deterioration of a conversion catalyst and to provide the compact equipment by internally providing a cooling pipe on the steam and reformed gas inlet side of a CO converter, packing the conversion catalyst for high temp. in the pipe and packing the conversion catalyst for low temp. in the outlet side. CONSTITUTION:The CO-contg. gaseous H2 (300 to 350 deg.C) obtd. by steam reforming of a reforming raw material, such as natural gas, is introduced from the inlet 13 into a casing 11 of the CO converter. The cooling pipe 16 is disposed on the inlet 13 side in the casing and the CO conversion catalyst 20 for high temp., for example, Fe-Cr catalyst, is packed in the inside segmented by a inlet part mesh 17 and a partition mesh 18 around the cooling pipe 16. The CO conversion catalyst 22 for low temp., for example, Cu-ZnO catalyst, is packed between the partition mesh 18 and an outlet part mesh 21. The gas converted by the conversion catalyst for high temp. is cooled by the cooling pipe to about 250 deg.C and further, the CO therein is decreased down to the prescribed concn. under the conversion catalyst for low temp.; thereafter, the gas is supplied to the fuel cell, etc. |
