Paper making and fiber liberation – Apparatus – Digester
Patent
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.
Alvo Steve
Habelt William W.
The Bauer Bros. Co.
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