| 摘要 |
PURPOSE:To reduce the total weight of the title reactor and to enable the disassembly and transportation of the reactor by vertically arranging many reaction tubes, which are reversed at their upper parts and passed through an annular catalyst bed from the upper part to the lower part, in a vessel contg. saturated pressurized water. CONSTITUTION:When a cover 2 is removed and a support 4, a baffle plate 5, the reaction tube 7, and a center tube 8 are set in the vessel, a stopper ring 71 is fixed to the appropriate position of the reaction tube 7 by welding, etc. A hole 42 having the diameter larger than the outer diameter of the reaction tube 7 and smaller than that of the stopper ring 71 is provided to the support 4 for supporting the weight of the reaction tube 7. The reaction tube 7 is hung up above the support 4, then the lower end of the reaction tube 7 is inserted into the hole 42 for the reaction tube provided to the support 4 and the tube is gradually lowered. When the lower end of the tube 7 reaches to the position of the stopper ring 71, the lowering of the tube is stopped. |
