Cycling Zone Extraction

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Abstract
Cycling zone separation techniques are extended to extraction systems using a system with discrete transfer and equilibrium steps. Experimentally, the direct thermal mode was used to separate diethylamine from water using toluene as the stationary solvent. A staged theory was developed and used to investigate the effects of the variables. The separation occurs in waves and requires proper spacing of the temperature changes to obtain optimum separation. Agreement between experiment and theory was fair.
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