Anionic sulfonate surfactants in the washing and pulping operati

Details Anionic sulfonate surfactants in the washing and pulping operati Anionic sulfonate surfactants in the washing and pulping operati

1993-10-05

1995-11-07

Chin, Peter

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With washing

162 72, 162 75, 162 76, 162DIG3, D21C 902

Patent

active

054645026

ABSTRACT:
A method for enhancing pulp washing efficiency is disclosed. An anionic sulfonate surfactant is added within the washing or pulping operation to enhance the removal of lignin and spent cooking chemicals from pulp.

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Wilkes et al, "New Surface Active Chemicals", Paper Trade Journal, Aug. 17, 1939, pp. 63-66.
Blomberg, L., et al., "Organic Carry-Over in Kraft Pulp and Bleaching Discharges", Proceedings from TAPPI Pulping Conference, pp. 217-226 (1990).
Hise et al., "The Effect of Brown Stock Washing on the Formation of Chlorinated Dioxins and Furans During Bleaching", TAPPI Journal, 73(1):185-190 (1990).
Laxen, T., "Dynamic and Physical-Chemical Aspects of Sulphate Pulp Washing", Pulp and Paper Canada, 87(4):49-53 (1986).

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