Reducing chemical transfer between treatment stages

Details Reducing chemical transfer between treatment stages Reducing chemical transfer between treatment stages

1980-09-19

1982-01-12

Smith, William F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With washing

162 65, 162 77, D21C 906, D21C 910

Patent

active

043103847

ABSTRACT:
A method and apparatus for reducing or eliminating the transfer of chemicals across a washer when reusing washer filtrate as a washing medium in a counterflow system. The flow of washing fluid on the washers before and after a treatment stage is split and the liquid in the pulp mat leaving the washer is principally the type used to treat the pulp after the washer, and the filtrate from the washer is principally the type used to treat the pulp before the washer.

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American Paper Industry, Sep. 1969, pp. 43-45.
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