LIQUID-LIQUID EXTRACTION. PART XII. FLOODING RATES AND PERFORMANCE DATA FOR A ROTARY DISC CONTACTOR
Flood-point data have been obtained for a 3 in. diameter rotary disc contactor using a number of solvent--water systems. The variables studied were the rotor speed, compartment height, and the disc and stator diameters. In the presence of an undistributed solute, it was found that the total throughput increased by l00 to 200% when solute transfer took place from the solvent to the aqueous phase, whereas in the reverse direction of transfer the throughput was reduced by approximately 10% compared with the solute-free system. In the absence of solute, data have been interpreted in terms of the characteristic droplet velocities and these have been correlated with the column geometry and the physical properties. Mass transfer data have been obtained for both directions of transfer using two solvents, i.e. toluene and butyl acetate, with acetone as the solute. It has been shown that the over-all values of the mass transfer coefficient or H.T.U. cannot be split into the individual film'' values, and a new correlation has been obtained in which allowance is made for variations in interfacial area with column geometry and rotor speed. (auth)
- Research Organization:
- Atomic Energy Research Establishment, Harwell, Berks
- NSA Number:
- NSA-12-002274
- OSTI ID:
- 4345974
- Journal Information:
- Trans. Inst. Chem. Engrs. (London), Journal Name: Trans. Inst. Chem. Engrs. (London) Vol. Vol: 35
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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