Method for improved turpentine recovery from modern cooking...

Details Method for improved turpentine recovery from modern cooking... Method for improved turpentine recovery from modern cooking...

2008-06-10

2008-06-10

Halpern, Mark (Department: 1791)

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Including recovery of organic by-product

C162S029000, C159S047300, C203S014000, C203S026000, C203S039000, C203S080000

Reexamination Certificate

active

07384501

ABSTRACT:
A method for the preparation of pulp by means of alkaline cooking, in which method spent liquor is transferred to pressurized tanks, and at least one liquor is expanded corresponding to a temperature difference of 1 to 5° C. The generated steam is led to turpentine recovery. Thus, the removal of turpentine and gases dissolved in said liquor is effective, the amount of recovered turpentine increases, and pulp of better washability and higher quality is obtained.

REFERENCES:
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patent: 1049713 (1979-03-01), None
Jansson, Lennart, “Turpentine Recovery Systems for Continuous Digesters”, Tappi, vol. 50, No. 4, pp. 114A-116A, Apr. 1967.

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