Summary
The purpose of this investigation was to determine whether and under what conditions it would be practicable to use holding-times of less than three hours in the solvent winterization of cottonseed oil in 85-15 acetone-hexane mixture. Since the output of the chilling unit varies inversely as the holding-time required, it is advantageous to use the shortest feasible holding-time. Systematic winterization data were obtained on a laboratory scale for different oil-solvent ratios and temperatures using the technique previously described.
The results indicate that, under the stalic chilling conditions used in these experiments, the holding-time can be reduced from three hours to 1 hour by using either a higher oil concentration, a lower chilling temperature, or both. However, on the basis of previously reported data it is known that with agitation during chilling, such as would be encountered in commerical continuous chilling units, the rate of crystal formation would be further increased. Under practical conditions therefore the adjustment of temperature and concentrations should make it feasible to use holding-times even shorter than one hour with a corresponding increase in the capacity of the chilling units.
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References
Boucher, R. E., and Skau, E. L., J. Am. Oil Chem. Soc.,28, 483–487 (1951).
Mitchell, J. Jr. and Smith, D. M., Aquametry, Interscience Publishers Inc. New York, 1948, pp. 146–151.
Skau, E. L., Dopp, W. N., Burleigh, E. G., and Banowetz, L. F., J. Am. Oil Chem. Soc.,27, 556–564 (1950).
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One of the laboratories of the Bureau of Agricultural and Industrial Chemistry, Agricultural Research Administration, U. S. Department of Agriculture.
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Boucher, R.E., Skau, E.L. Phase relations in the solvent winterization of cottonseed oil in 85-15 acetone-hexane mixture at reduced holding-times. J Am Oil Chem Soc 29, 455–456 (1952). https://doi.org/10.1007/BF02632627
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DOI: https://doi.org/10.1007/BF02632627