Feeding suspension to a disc filter

Details Feeding suspension to a disc filter Feeding suspension to a disc filter

1995-06-06

1998-01-06

Popovics, Robert

Liquid purification or separation

Plural distinct separators

Filters

210456, B01D 3321

Patent

active

057050686

ABSTRACT:
A disc filter assembly includes a number of filter discs mounted in a vat by a horizontal shaft with an inter-disc volume between the discs. A feed mechanism is provided that makes it possible to feed the pulp suspension onto the surface of the liquid, directed toward the most concentrated pulp in the vat, in such a manner that the feed is insensitive to fluctuations of the suspension surface level in the vat. This is accomplished by feeding the suspension into the vat interior directly into each of the inter-disc volumes, as by using a chute (which may have the approximate configuration of a hollow triangular parallelepiped) for each volume. A header for supplying pulp suspension to the chutes may be mounted on or spaced from the sidewall of the vat, or above the vat.

REFERENCES:
patent: 1259139 (1918-03-01), Salisbury
patent: 1685118 (1928-09-01), Campbell
patent: 2086635 (1937-07-01), Peterson
patent: 2406065 (1946-08-01), Dickinson et al.
patent: 4704206 (1987-11-01), Barra
patent: 4943372 (1990-07-01), Kohonen
patent: 5422005 (1995-06-01), Redl et al.
Handbook for Pulp & Paper Technologists, Smook, 1982, pp. 109-112 and 227-229.
Reference list of Disc Filters and drawings. 1994.
Hedemora Vacuum Disc Filters brochure, 1989.
Kvaerner Eureka, Pulp & Paper News, Kvaerner Eureka/Kvaerner Hymac Publication, No. 1, 1993.
Kvaerner Eurkea, Pulp & Paper News, Kvaerner Eureka/Kvaerner Hymac Publication, No. 3, 1993.

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