| 摘要 |
PURPOSE:To prevent local overheating and to obtain a uniform temp. distribution in a catalytic reaction vessel by enlarging gradually the sectional area of the gas flow passage in the vessel from the suction side to delivery side. CONSTITUTION:In a catalytic reaction vessel 7 wherein the sectional area of the gas flow passage is enlarged gradually from the suction side to delivery side, Co catalyst 6 having low-temp. activity is packed. The vessel 7 is heated by supplying an electric current to a heating furnace 4 from an electric source 5. Gaseous hydrocarbon and air are supplied into the vessel 7 through flowmeters 1, and the hydrocarbon is converted into an endothermic gas. In this way, the temp. in the vessel is kept at a comparatively low temp. and the durability of the catalytic reaction vessel and the Co catalyst can be increased. |
