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A new effective combination of a thin‐film extractor and gravity setter
Author(s) -
Berman Yuli,
Tamir Abraham
Publication year - 2001
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450790302
Subject(s) - extractor , contactor , mechanics , pressure drop , radius , hysteresis , fluidized bed , materials science , expansion ratio , volume (thermodynamics) , power (physics) , analytical chemistry (journal) , thermodynamics , chemistry , engineering , physics , computer science , chromatography , process engineering , composite material , computer security , quantum mechanics
Previous and present studies demonstrate that the new thin‐film extractor with the gravity settler have superior performance over other conventional devices. This is because the volume of the extractor and the settler are significantly reduced, on the average, by factors of 100 and 10, respectively, for a similar power input. Correlations for a water‐iodine‐kerosene liquid system developed in the past (Berman and Tamir, 2000) for the mass transfer and pressure drop were modified by incorporating the ratio R/R r This ratio takes into account the impact of the liquids on the walls of the reactor where R is the radius of the free film and R r is the radius of the reactor. In addition, an equation was proposed, which demonstrates the dependence of the extraction efficiency on the operating parameters. The gravity settler combined with the thin‐film extractor was tested thoroughly yielding two correlations for estimating its height, i.e. the fluidized‐bed and dense‐packed zones. In the present case the sedimentation zone is absent. A scale up procedure based on the model developed is proposed as well as a principle scheme of a pilot plant based on the new effective combination