Performance characteristics of a 12 in. Diameter sieve plate

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Abstract
The hydraulic characteristics of a 12 in. diameter sieve plate have been studied and data are presented for plate pressure drop, clear liquid head on the plate and foam height, measured over a range of gas and liquid phase rates and outlet weir heights.The mass transfer performance of the plate, as expressed in terms of an equivalent number of transfer units, was measured for conditions of both gas and liquid film control over a similar range of operating variables. The number of transfer units are shown to be directly related to the appropriate phase contact time on the plate.The equations developed by A.I.Ch.E., to correct for back mixing effects on the plate efficiency, have been found to under‐estimate the degree of mixing on the plate used, and hence predict lower liquid efficiencies than might be expected from a comparison with literature values.

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