Wool scouring

Details Wool scouring Wool scouring

1980-09-05

1982-09-14

Tungol, Maria Parrish

Bleaching and dyeing; fluid treatment and chemical modification

Cleaning or laundering

Scouring, degreasing or bowking

8141, 8158, 68 18D, D01C 300

Patent

active

043493475

ABSTRACT:
In wool scouring systems in which scouring liquor is continuously withdrawn from the scouring bowls for separation of solid contaminants and wool grease and then recycled to the bowls, improved separation of solids is achieved by adding a soluble silicate, and preferably also a polyelectrolyte to the liquor before solids separation. Silicate can advantageously replace soda as scouring agent. Improved operation can also be obtained by controlled flow down from the circulatory system, as at 27, and by passing the jet phase from a disc centrifuge 17 to a decanter centrifuge 15 for further separation of solids. Alternatively, the entire liquor circulation may be passed first to the disc centrifuge and only the jet phase to the decanter, the middle liquor phase being recycled.

REFERENCES:
patent: 944957 (1909-12-01), Eberhard
patent: 2762681 (1956-09-01), Crowley
patent: 3440167 (1969-04-01), Clark et al.
patent: 4124502 (1978-11-01), Leman
Degremont, Water Treatment Handbook 4th Ed. (1973) pp. 116-117.

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