| 摘要 |
1,144,596. Controlling exothermic catalytic reactors. BADISCHE ANILIN-& SODAFABRIK A.G. 23 June, 1966 [24 June, 1965], No. 28134/66. Headings B1F and B1X. Cold gas is fed into synthesis gas between layers of catalyst 8-12 in a reactor by means of a double walled jacket tube 19 arranged concentrically about the catalyst vessel 4 and connected only at its lower end to the vessel to allow for relative thermal expansion, openings 17 in the inner wall of the jacket tube corresponding .with gas inlets 18 in the vessel 4, there being thermal insulation 16 between the jacket-tube and the vessel and stuffing box packing 22 (Fig. 2) in the regions of the openings 17 and 18. The stuffing box packing is connected to the vessel and is slidable on the jacket-tube, the annular space 29 between two adjacent packings 22 being adjustable by means of a screw 31. The tube is divided longitudinally into a number of segments corresponding to the number of gas inlets 17, the cold gas entering the jacket tube from tubes 26. Synthesis gas, e.g. ammonia, enters the reactor at 5 passes down space 3 between outer jacket tube 19 and outer vessel 2 and via openings 6 passes up through heat exchanger 1 and through pipe 7 to then pass downwardly through beds 8-12 before leaving the reactor via the other side of the heat exchanger. |
