Acidification of tall oil soap using carbon dioxide

Details Acidification of tall oil soap using carbon dioxide Acidification of tall oil soap using carbon dioxide

1992-05-20

1994-02-15

Kight, III, John

Chemistry: natural resins or derivatives; peptides or proteins;

Natural resins or derivatives

Recovery of tall oil or derivatives from papermaking waste,...

530209, 530230, B01D 1706

Patent

active

052868451

ABSTRACT:
The present invention relates to the conversion of tall oil soap to produce crude tall oil. An aqueous tall oil soap solution generated in a kraft wood-pulping process is placed in contact with carbon dioxide, under pressure, to form crude tall oil and sodium bicarbonate brine. The crude tall oil and sodium bicarbonate brine are then allowed to separate, under pressure, into a crude tall oil layer and a sodium bicarbonate brine layer. The crude tall oil layer is then separated from the sodium bicarbonate brine layer, again under pressure. The separated crude tall oil may then be further refined to yield fatty acids, resin acids, and other constituents, which are useful in numerous industrial applications, such as in soaps, lubricants, inks, adhesives, and coatings.

REFERENCES:
patent: 1888581 (1932-11-01), Bent
patent: 2515739 (1950-07-01), Smerechniak et al.
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patent: 4075188 (1978-02-01), Vardell, Jr.
patent: 4495095 (1985-01-01), Lawson et al.
Westvaco's Carbon Dioxide Process, Feb. 28-Mar. 2, 1989, Charleston, S.C.
Smook, G. A., Handbook for Pulp & Paper Technologists, 6th Edition, 1989; pp. 146-148.
McSweeney, E. E., Sulfate Naval Store, (as reported in Naval Stores: Production, Chemistry, Utilization), pp. 165-168.

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