Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Continuous chemical treatment or continuous charging or...
Patent
1979-06-15
1981-10-20
Bashore, S. Leon
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Continuous chemical treatment or continuous charging or...
162 22, 162 57, 162 60, 162 65, 162243, 162247, D21C 904, D21C 910, D21D 528
Patent
active
042959250
ABSTRACT:
Washed wood pulp from a continuous digester is treated with oxygen in the blow line from the digester. Most of the treatment occurs within the mixer. The mixer has a mixing zone with a swept area of 10,000 to 1,000,000 square meters per metric ton of oven-dry pulp. A preferred range is 25,000 to 150,000 square meters per ton of oven-dry pulp and an optimum range is around 65,400 square meters per metric ton of oven-dry pulp. Following mixing, the pulp may be taken to a subsequent process, a diffusion washer, or to a storage tank.
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Battan Howard R.
Bentvelzen Jozef M.
Bepple Henry
Justice Dennis H.
Meredith Michael D.
Alvo Steve
Bashore S. Leon
Weyerhaeuser Company
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