Apparatus for treating cellulosic material with a screw feeder e

Details Apparatus for treating cellulosic material with a screw feeder e Apparatus for treating cellulosic material with a screw feeder e

1983-01-27

1985-01-01

Alvo, Steve

Paper making and fiber liberation

Apparatus

Digester

162246, 162247, D21C 700, D21C 706, D21C 708

Patent

active

044915047

ABSTRACT:
Cellulosic material, such as wood chips, is fed from a storage bin (10) through a compacting screw feeder (12) to an impregnation chamber (16) in housing (14) wherein the material is contacted with a treatment liquid. The impregnated chips and treatment liquid are passed from chamber (16) by a triple flight intermeshing screw feeder (18) directly to the interior of an inclined treatment vessel (20) wherein the material is digested by cooking at elevated temperature and pressure in both the treatment liquid and a treatment vapor.

REFERENCES:
patent: 2673690 (1954-03-01), Segl
patent: 3549483 (1970-12-01), Fair
patent: 3841465 (1974-10-01), Miller, Jr. et al.

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