Water and n-heptane volume fractions in a rotor-stator spinning disc reactor

F. Visscher, A. Bieberle, M. Schubert, J. Schaaf, van der, M.H.J.M. Croon, de, U. Hampel, J.C. Schouten

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14 Citations (Scopus)

Abstract

This paper presents the volume fractions of n-heptane and water measured in a rotor-stator spinning disc reactor. The volume fractions were measured using ¿-ray tomography and photographic image analysis. The volume fractions were determined as a function of rotational disc speed, flow ratio, position in the reactor, and rotor material. In addition, the effect of the density difference between water and n-heptane was determined by dissolving potassium iodide in the water phase. Below a rotational disc speed of 75 rpm the volume fraction measured by tomography and photographic image analysis are within 10% deviation. For low rotational disc speeds, the n-heptane volume fraction decreases slightly with increasing rotational disc speed: the centrifugal force accelerates the larger n-heptane droplets to the center. At higher rotational disc speeds the droplets become smaller accordingly, the friction between the phases determines the flow, and the n-heptane volume fraction becomes equal to the n-heptane to total flow ratio. An increase in density difference from 0.31 to 0.79 kg dm–3 did not influence the volume fractions.
Original languageEnglish
Pages (from-to)16670-16676
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume51
Issue number51
DOIs
Publication statusPublished - 2012

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