Bleaching and dyeing; fluid treatment and chemical modification – Fluid treatment – Special forms and forming
Patent
1977-11-21
1979-07-10
Coe, Philip R.
Bleaching and dyeing; fluid treatment and chemical modification
Fluid treatment
Special forms and forming
68 44, 68158, 68181R, 68208, 68DIG5, D06B 302
Patent
active
041602978
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 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 J.
Coe Philip R.
Envirotech Corporation
Krebs Robert E.
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