Liquid treatment of pulp

Details Liquid treatment of pulp Liquid treatment of pulp

D - Textiles, Paper

21

C

92/60

D21C 9/02 (2006.01) B01D 11/02 (2006.01)

Patent

CA 1220372

ABSTRACT The invention relates to treatment oh cellulose pulp by displace- ment of liquids with other liquids in order to obtain improved results with regard to recovery of chemicals, wash result and isolation of different treatment stages. The object is reached by adding liquid at at least two areas along a web of pulp in movement and extracting liquid across the web movement so that displacement fronts is obtained, and by series treatment letting the first extracted liquid serve as the first added liquid at the nearest preceding treatment, the second extracted as the second added, the third extracted as the third added and so forth. The invention is mainly applicable in washing and bleaching departments within the pulp industry.

424821

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