TY - JOUR
T1 - Characteristics of a motionless mixer for dispersion of immiscible fluids-II. Phase inversion of liquid-liquid systems
AU - Tidhar, M.
AU - Merchuk, J. C.
AU - Sembira, A. N.
AU - Wolf, D.
PY - 1986
Y1 - 1986
N2 - Phase inversion in liquid-liquid systems flowing in a motionless mixer was studied using the modified electroresistivity method published in Part I of this series (Sembira A., Merchuk J.C. and Wolf D., Chem. Engng Sci. 1986 41 445). The pairs of liquids used were: (a) water-kerosene, (b) water-CCl4 and (c) water-(kerosene + CCl4). Sulzer SMV-4 mixing elements made of stainless steel (SS316) and identical elements coated with a film of Teflon were used. On the basis of the experimental results, it can be concluded that (a) the metastable or ambivalent zone is very narrow; (b) at low flow rates the nature of the surface of the mixing elements has a strong influence on the phase inversion phenomenon; (c) at high flow rates the nature of the surfaces has a weak influence and the inversion occurs when the volume fraction of the dispersed phase is close to 0.5. A predictive model based on free energy consideration is derived. The model describes the results reported satisfactorily.
AB - Phase inversion in liquid-liquid systems flowing in a motionless mixer was studied using the modified electroresistivity method published in Part I of this series (Sembira A., Merchuk J.C. and Wolf D., Chem. Engng Sci. 1986 41 445). The pairs of liquids used were: (a) water-kerosene, (b) water-CCl4 and (c) water-(kerosene + CCl4). Sulzer SMV-4 mixing elements made of stainless steel (SS316) and identical elements coated with a film of Teflon were used. On the basis of the experimental results, it can be concluded that (a) the metastable or ambivalent zone is very narrow; (b) at low flow rates the nature of the surface of the mixing elements has a strong influence on the phase inversion phenomenon; (c) at high flow rates the nature of the surfaces has a weak influence and the inversion occurs when the volume fraction of the dispersed phase is close to 0.5. A predictive model based on free energy consideration is derived. The model describes the results reported satisfactorily.
UR - http://www.scopus.com/inward/record.url?scp=0022476474&partnerID=8YFLogxK
U2 - 10.1016/0009-2509(86)87027-0
DO - 10.1016/0009-2509(86)87027-0
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AN - SCOPUS:0022476474
SN - 0009-2509
VL - 41
SP - 457
EP - 462
JO - Chemical Engineering Science
JF - Chemical Engineering Science
IS - 3
ER -