TREATING PULP WITH OXYGEN

P 65 4685 TREATING PULP WITH OXYGEN ABSTRACT OF THE DISCLOSURE Washed wood pulp from a continuous digester (14) is treated with oxygen in the blow line (19) from the digester (14). Most of the treatment occurs within the mixer (40). The mixer (40) has a mixing zone with a swept area of 10,000 to 1,0...

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Hauptverfasser: BEPPLE, HENRY, BATTAN, HOWARD R, JUSTICE, DENNIS H, BENTVELZEN, JOZEF M, MEREDITH, MICHAEL D, TORREGROSSA, LOUIS O
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:P 65 4685 TREATING PULP WITH OXYGEN ABSTRACT OF THE DISCLOSURE Washed wood pulp from a continuous digester (14) is treated with oxygen in the blow line (19) from the digester (14). Most of the treatment occurs within the mixer (40). The mixer (40) 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 (24), or to a storage tank (24).