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Fractional crystallization: Design alternatives and tradeoffs
Author(s) -
Dye Susan R.,
Ng Ka M.
Publication year - 1995
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690411109
Subject(s) - crystallization , fractional crystallization (geology) , saturation (graph theory) , thermodynamics , phase diagram , process design , solvent , process engineering , mathematics , mechanics , mathematical optimization , materials science , phase (matter) , chemistry , physics , engineering , process integration , combinatorics , organic chemistry , geophysics , mantle (geology)
Guildlines for the design of fractional crystallization processes to separate two‐and three‐solute mixtures are presented. By using solvent addition/removal, stream combination, and cooling/heating, these processes bypass regions of multiple saturation in the phase diagram and recover purse solutes. Design equations are formulated, and the constraints on the design variables are identified. also included is a discussion of the effect on recyle flows of changes in the design variables and an estimate of the cost of a fractional crystallization separation.