Method of continuously cooking pulp

Details Method of continuously cooking pulp Method of continuously cooking pulp

D - Textiles, Paper

21

C

D21C 3/24 (2006.01) D21C 7/00 (2006.01) D21C 7/14 (2006.01) D21C 9/04 (2006.01)

Patent

CA 2149524

The present invention relates to a digester for continuous cooking, under elevated pressure and temperature, of fibre mate- rial in a vertical digester (1), where fibre material and cooking liquid are fed into the top of the digester, used cooking liquor is drawn off from at least one digester screen arrangement (1D) between the top and the bottom of the digester, and fibre material is fed out from the bottom of the digester, it being possible to maintain the temperature in the cooking zone immediately above the digester screen arrangement (1B) at essentially the same temperature level as the remaining cooking zone or cooking zones of the digester.

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