Distillability of extracted mixed-birch tall oil |
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Authors: | Keijo Ukkonen |
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Affiliation: | (1) Chemical Products, Pulp Mill, Oy Kaukas Ab, SF-53200 Lappenranta 20, Finland |
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Abstract: | Chemical and physical properties of tall oil made in the CSR process and distillation results of three different types of
distillation plants are presented. Chemically extracted, mixed-birch, tall oil differs remarkably from the normal Scandinavian
crude tall oil. The extracted oil deviates from the normal, unextracted, mixed-birch tall oil with respect to the smaller
unsaponifiable amount and the fatty acid esters. The amount of resin acid is small in extracted mixed-birch tall oil. The
quantity of fatty acids, especially that of saturated fatty acids, is large. Distillation of extracted mixed-birch tall oil
is most successful in a distillation plant where thin film evaporators are used. |
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