Method of cooking cellulose material and preserving the heat and

Details Method of cooking cellulose material and preserving the heat and Method of cooking cellulose material and preserving the heat and

1979-07-26

1981-06-23

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Including recovery of organic by-product

159 47WL, 162 16, 162 47, 162 49, 162 68, 203 22, D21C 102, D21C 1106

Patent

active

042749115

ABSTRACT:
A method of cooking cellulose material and effectively preserving the heat and terpentine content of the cooking liquor is disclosed. The cooking liquor is allowed to expand and the expansion steam (blow steam) is conveyed into a bed of cellulose material in a storage container (3', 3) to heat and impregnate the cellulose material before cooking. A heated zone is maintained in the bed of material below the surface of the bed by regulating the flow of expansion steam into the container. Uncondensed, evil-smelling and poisonous gases are at the same time prevented from flowing out into the atmosphere. These gases are drawn off from the storage container for destruction.

REFERENCES:
patent: 2870009 (1959-01-01), Richter
patent: 3432402 (1969-03-01), Herrlinger et al.
patent: 3816239 (1974-06-01), Marks
patent: 4033811 (1977-07-01), Gloersen
patent: 4088529 (1978-05-01), Ryhman
patent: 4111743 (1978-09-01), Ronnholm
patent: 4137134 (1979-01-01), Suominen et al.
"Operational Experience about Kamyr 2 Vessel Digester" Yachi; J-TAPPI convention 1977.
Rydholm "Continuous Pulping Processes" TAPPI 1970, pp. 3 and 6. _
"Cooking Sulfate Pulp in Installations" , pp. 4, 5, 11, 12, Moscow 1966.

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