Separating phenols from alkaline pulping spent liquors

Details Separating phenols from alkaline pulping spent liquors Separating phenols from alkaline pulping spent liquors

1978-03-06

1980-06-17

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568653, 568752, 568762, 568438, C07C 3736, C07C 4524, C07C 4112, C07C 3738

Patent

active

042083508

ABSTRACT:
Phenol, ortho-cresol, meta- and para-cresols, guaiacol, vanillin, acetovanillone and other phenols are separated from alkaline pulping spent liquors by extracting the alkaline liquors with a lower aliphatic alcohol having from 2-5 carbon atoms inclusive, separating the solvent and aqueous phases, and thereafter separating the phenols from the solvent phase.

REFERENCES:
patent: 2104701 (1938-01-01), Sandborn
patent: 2489200 (1949-11-01), Sanky et al.
patent: 2721221 (1955-10-01), Bryon
patent: 2871270 (1959-01-01), Alberda
patent: 3375283 (1968-03-01), Goheen et al.
Chernovsov et al., Tr. Vies, Nauch-Issled Tsellyul-Bum Prom (1972), No. 61, pp. 172-180.
Browning, "Chemistry of Wood," Interscience Pub., pp. 464 and 481 (1963).

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