Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-04-03
1980-04-29
Adee, John
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
422257, B01D 1100
Patent
active
042005256
ABSTRACT:
A liquid extraction process using counterflowing liquid phases in a reciprocating plate extraction column in which the plates of the column are spaced with respect to one another approximately according to the equation: ##EQU1## wherein l is the plate spacing, U.sub.D is the superficial velocity of the dispersed phase at flooding, U.sub.C is the superficial velocity of the continuous phase at flooding, .DELTA..rho. is the density difference and .sigma. is the interfacial tension.
By using the above equation the volume of column required to carry out a specific extraction is minimized.
The extraction column comprises a casing, a reciprocating shaft in the casing having perforated plates and, optionally, baffle plates mounted thereon in a spatial relationship with respect to each other calculated on the basis of the equation and includes motive means and suitable cam and driving means to reciprocate the shaft.
REFERENCES:
patent: 2726145 (1955-12-01), Thomas et al.
patent: 3488037 (1970-01-01), Prochazka et al.
Performance of a 36" Diameter Reciprocating Plate Extraction Column by Karr and Lo A.I.CH.E. meeting, Atlantic City, N.J. 8/1976.
Performance of a Reciprocating-Plate Extraction Column by Karr. Reprint from A.I.Ch.E. Journal, vol. 5, No. 4, Dec. 1959, pp. 446-452.
Chem-Pro's Bulletin KC 10, Karr Reciprocating Plate Extraction Column, Not dated, Admitted prior art.
Development of a Laboratory-Scale Reciprocating column by Lo and Karr, Ind. Eng. Chem. Process Des. and Development, vol. 11, No. 4, 5/1972.
Performance and Scale Up of a Reciprocating Plate Extraction Column by Karr and Lo, ISEC vol. 1, 1971.
McMasters University List of Papers on 2 inch Karr Columns 1971-1976.
Adee John
Chem-Pro Equipment Corp.
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