Process and apparatus for removing contaminants from pulp digest

Details Process and apparatus for removing contaminants from pulp digest Process and apparatus for removing contaminants from pulp digest

1989-05-03

1990-04-10

Bascomb, Wilbur

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Including recovery of organic by-product

162239, 162242, 203DIG16, 585803, D21C 1106, C07C 700

Patent

active

049157841

ABSTRACT:
There is provided a process and apparatus for improving the yield of turpentine collectable from the vent gases emanating from a pulp disgester in a kraft paper pulp Process. The apparatus is characterized by the insertion in a conventional turpentine recovery system of a gas/liquid contact vessel for intimately contacting the hot turpentine containing vent gas from a pulp digester with liquid foul condensate recycle from a turpentine decanter and a condenser for condensing the condensible components of the recycle treated vent gas, whereby the foul condensate is greatly improved as to contaminant content and rendered suitable for reuse in the plant.

REFERENCES:
patent: 3183145 (1965-05-01), Collins
patent: 3492198 (1970-01-01), Rosenblad
patent: 3607617 (1971-09-01), Drew
patent: 3753851 (1973-08-01), Gaillard
patent: 3764461 (1973-10-01), Baierl
patent: 3816239 (1974-06-01), Marks

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