Bleaching and dyeing; fluid treatment and chemical modification – Fluid treatment – Special forms and forming
Patent
1978-10-16
1981-01-27
Coe, Philip R.
Bleaching and dyeing; fluid treatment and chemical modification
Fluid treatment
Special forms and forming
68 19, 68 44, 68158, 68181R, 68208, 68DIG5, D06B 504, D21C 906
Patent
active
042466695
ABSTRACT:
A machine and process for washing paper stock pulp and similar free-filtering materials includes two or more horizontally-disposed wash drums mounted each in a tank. Two endless filter belts are trained to pass under each of said wash drums and through liquid contained in each of the tanks. A mat of pulp is formed between the two endless filter belts and carried under each of the wash drums for washing therein. Wash liquor passes through the pulp mat as it travels under each of the drums thereby washing the pulp mat, and the liquor passes between the drums and the tanks by gravity flow. After the pulp has been washed it is removed from between the two belts.
REFERENCES:
patent: 899440 (1908-09-01), Shuman et al.
patent: 2745712 (1956-05-01), Burling et al.
patent: 3834869 (1974-09-01), Ancelle et al.
patent: 3857261 (1974-12-01), Wilcox
Bohner Hal
Coe Philip R.
Envirotech Corporation
Krebs R. E.
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