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Title: PULSE COLUMN DESIGN

PULSE COLUMN DESIGN A stagewise approach was used in a theoretical analysis of pulse columns. In the analysis the column was arbitrarily divided into discrete stages comprising that part of the column between two adjacent perforated plates. The operation of the pulse column was described mathematically using material balance equations, and a design method was derived which used two stage lines and two operating lines, one set for the pulse generator upstroke and one set for the downstroke. Assuming equilibrium contact, the effect of recycle in a pulse column was shown to cause a large decrease in the separation obtained as the pulse frequency was increased. Hold-up studies were made using isoamyl alcohol- water, and methyl isobutyl ketone water. The hold-up per cycle of the dispersed phase for both systems was found to be equal to the interstage flow per cycle of the dispersed phase. Hold-up behavior at high frequencies was different for the two systems. Extraction runs were also made using the system methyl isobutyl ketone - acetic acid-water. The effects of recycle were found to result in a drop in column separation efficiency with increased pulse frequency. It more » was found to be theoretically possible for a column to operate in a pinched-in region even though this is not apparert from an examination of the superficial flow ratio of the two streams being fed to the column Techniques for sampling interstage flow streams in a colurm operating in the mixer-settler region are described. (J.R.D.) « less
Authors: ;
Publication Date:
OSTI Identifier:4230417
Report Number(s):ISC-1095
DOE Contract Number:W-7405-ENG-82
Resource Type:Technical Report
Data Type:
Resource Relation:Other Information: Orig. Receipt Date: 31-DEC-59
Research Org:Ames Lab., Ames, Iowa
Sponsoring Org:USDOE
Country of Publication:United States
Language:English
Subject: CHEMISTRY; ACETIC ACID; ALCOHOLS; ALKYL RADICALS; AMYL RADICALS; BUTYL RADICALS; EQUATIONS; EQUILIBRIUM; EXTRACTION COLUMNS; FREQUENCY; ISOMERS; KETONES; LABORATORY EQUIPMENT; LIQUID FLOW; MATHEMATICS; MEASURED VALUES; METHYL RADICALS; MIXING; OPERATION; ORGANIC COMPOUNDS; PERFORMANCE; PHASE DIAGRAMS; PLANNING; REACTION KINETICS; SAMPLING; SEPARATION PROCESSES; SOLVENT EXTRACTION; TESTING; WATER