Estimate the diameter and height of an RDC column to extract acetic acid from water using isopropyl ether for the conditions and data of Problem 7.21. For the desired degree of separation, 15 equilibrium stages are required.

Data From Problem 7.21:-

Acetic acid is to be extracted from a dilute aqueous solution with isopropyl ether at \(298 \mathrm{~K}\) in a countercurrent cascade of mixer-settler units. In one of the units, the following conditions apply:

If the raffinate is the dispersed phase and the mixer residence time is \(2.5 \mathrm{~min}\), estimate for the mixer:

(a) The dimensions of a closed, baffled vessel.

(b) The diameter of a flat-bladed impeller.

(c) The minimum rate of rotation of the impeller.

(d) The power requirement of the agitator at the minimum rate of rotation.

Transcribed Image Text:

Raffinate Raffinate Flow rate, kg/s Density, kg/m 2.646 6.552 1017 726 Viscosity, cP Interfacial tension = 0.0135 N/m 1.0 0.5