By Stanley Hartland
Counter-Current Extraction: An advent to the layout and Operation of Counter-Current Extractors offer beneficial conclusions and effects touching on counter-current extraction. This booklet goals to offer illustrations of a few of the mathematical suggestions as instruments in addition to capacity to an finish.
Organized into 8 chapters, this booklet starts off with an outline of a number of the features of the move of a unmarried solute among immiscible stages in counter-current circulate. this article then describes all attainable components and obtains their dating to the extraction issue and variety of levels or move devices. different chapters ponder the flows and concentrations in counter-current ahead and again extraction. This publication discusses to boot the optimization of ahead and again extraction utilizing counter-current stream in differential and stagewise extractors. the ultimate bankruptcy offers with additional functions of counter-current extractions.
Undergraduates and researchers excited about the layout and operation of counter-current extractors will locate this e-book invaluable.
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Additional info for Counter-Current Extraction. An Introduction to the Design and Operation of Counter-Current Extractors
Examples of the use of the formulae are given in Appendix 2c. 3. FORMULAE RELATCNG N, J AND Q OR N, J* AND Q* Ns and NL may be obtained by replacing J and Q by / * and Q* in the formulae for Ns and NG given below. Q Q* Ay2 Ay2 dy6 Range for Ns > 1 ( y ) 0 to 1 dy6 AyAr 0 Ay4 dy6 dy3 Oto oo Ay ι Ay5 dy6 dy5 0 to oo Ay2_ Ay4r Ay2 Ay3 1 to oo Ay2_ Ay2 1 to oo dys 4y3 Ay4. 3. This may be obtained by considering Fig. 4 which gives the relative positions of the end concentrations for absorption and stripping for the two cases youi less than j ( x o u t) which is usual in absorption and yout greater than y(xout) which is usual in stripping.
1, and hence each concentration difference is the result of choosing two concentrations from four. and hence there are six different numerator combinations and the same six denominator combinations. The number of ways of choosing a numerator and a denominator from the six possibilities is •c. 2! 5. 29 F O R M U L A E R E L A T I N G Ν, J A N D Q However, this includes Jin - Jout jOout) - jOin) which from an overall balance is equal to / * and hence the possible number of different separation factors is only fourteen.
Chem. Engrs. 35, 211 (1939). 3. , p. 555, McGrawHill Book Company Incorporated, New York, 1950. 4. T. K . SHERWOOD and R. L. PIGFORD, Absorption and Extraction, p. 135, McGrawHill Book Company Incorporated, New York, 1952. 5. SOUDERS and G . C . B R O W N , Fundamental design of absorbing and stripping columns for complex vapours, Ind. Eng. Chem. 24, 519 (1932). 6. K . W . W A R N E R , Extraction of uranyl nitrate in a disc column, Chem. Eng. Sei. 3, 161 (1954). 7. L. D. SMOOT and A. L. BABB, Mass transfer studies in a pulsed extraction column, Ind.
Counter-Current Extraction. An Introduction to the Design and Operation of Counter-Current Extractors by Stanley Hartland