Browsing by Author "Burwell, A"

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    The design and performance of pump-mix and gravity-flow mixer-settlers.
    (Australian Atomic Energy Commission, 1973-04) Royston, D; Burwell, A
    The historical development of pump-mix and gravity-flow mixer-settlers is reviewed and their operating and design features, including scale-up, are discussed. An experimental study of the hydraulic operating characteristics of two such units, an AAEC designed pump-mix mixer-settler based on the original KAPL work and a UKAEA Windscale gravity-flow mixer-settler is described. The pump-mix unit was shown to be less flexible in operation than the gravity-flow unit and it is shown that an increase in size of all the ports will increase the throughput of the pump-mix mixer-settler.
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    Regeneration of caustic potash solution used for the disposal of gaseous fluorides
    (Institution of Chemical Engineers, 1975-08-23) Royston, D; Burwell, A; Janov, J; Le Page, AH; Levins, DM; Ring, RJ; Vilkaitis, VK
    A system for the disposal of fluorine and gaseous hydrogen fluoride was developed as part of an experimental 1500 A fluorine cell facility used to investigate the production of fluorine. The design, operation and performance of the plant have been described in detail by Royston et al.1,2. The cell produced fluorine and hydrogen at 0.24 & s-1 with both gases containing approximately l0 vol.% hydrogen fluoride. These off—gases were disposed of continuously by scrubbing with 5-8.5 wt.% caustic potash solution which was regenerated by reaction with lime on a batch basis. This paper outlines the selection of the system and describes its operation and performance.