1,157,877. Centrifugal separators, steam dryers. GENERAL ELECTRIC CO. 29 July, 1966 [30 July, 1965], No. 34261/66. Headings BIT and B2P. [Also in Division G6] A vapour-liquid separator and dryer assembly is substantially as described in Fig. 4 of patent specification 946,909 with certain modifications. The straightening vanes (57) in the first or inner annular liquid-removal passageway (56), Figs. 2A and 2B (not shown) take the form of inverted teardrop-shaped diffuser blades as shown in Fig. 5, each pair of blades defining between them an inlet throat 60 which opens into a downwardly and outwardly diverging diffuser section 62 in which the velocity energy of the liquid is decreased and converted to pressure energy. Back pressure for liquid discharge from the blades may be provided by an annular flow restriction ring (64), Fig. 2B (not shown) further down the passageway (56). The tube (54) bounding the passageway (56) externally extends right down to the level of the inlet edge of the vortex tube (42). The second or outer annular passageway (75). Figs. 2A and 2B (not shown) in which liquid with entrained vapour enters, is provided with vertical curved vanes (74) which effect Whirling of the liquid-vapour mixture for separation of the vapour from the liquid. Each vane 74, Figs. 3 and 4, is formed integrally at the outer end of a vertical plate 73 secured to each side of each of a number cf equally-spaced horizontal plates 70 extending outwardly from the outer periphery of a triangular ring, (69), Fig. 2A (not shown) to which a steam vortex outlet tube (67) is secured. The vapour separated in the annular passageway (75) reverses its flow and passes up through openings 78 between adjacent plates 70 to join the vapour flowing upwardly through the tube (67) into the dryer (40). The tube (72) bounding the passageway (75) externally does not open into a diffuser screen at its lower end but extends outwardly of the tube (54) past the level of the annular ring (64), Fig. 2B (not shown) and terminates above the outlet edge of the tube (54). Dimensions of the apparatus and .performance figures are given.
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