| 摘要 |
1,218,823. Tubular pressure vessel. SOC. NATIONALE DES PETROLES D'AQUITAINE. 2 Feb., 1968 [16 Feb., 1967; 16 Nov., 1967], No. 5485/68. Heading B1X. [Also in Division F2. A tubular vessel, in which a reaction medium can flow under high pressure and at controlled temperature, comprises a series of cylindrical tubes 1, 14, each having dimensions such that the ratio of the outside to the inside diameters, is in excess of 1.4:1 at least one tube being surrounded by a jacket member 5, the tubes being firmly interconnected by couplings providing fluid-tight joints and the ends 2, 14 of the tubes being reinforced by the provision of increased thickness of metal. The temperature of the reaction is controlled by means of heat exchange with a fluid introduced into the jacket 5 the wall of tube, over the main portion of its run, being thick enough to withstand the high pressure and yet thin enough to provide good heat exchange properties. The joint between the jacket and end 2 of a tube 1 comprises the intermediate members 6, 7 screwed onto the thickened portion 5 of the tube and a flange 8 which is bolted to a flange on the jacket 5, seals 10 being interposed between the intermediate member 6 and the tube 1 and between the intermediate member 6 and the jacket 5. The tube 1 is connected to an adjacent tube 14 by means of flanges 11, 15 which are screwed onto the adjacent ends of the tubes 1, 14 and are connected together by bolts 12. The tube 14 may be a single bend or multibend elbow to form a reaction vessel in the form of a coil, the vessel being particularly useful for the polymerization of ethylene. |
