Method for applying a secondary filter layer or precoat layer in

Details Method for applying a secondary filter layer or precoat layer in Method for applying a secondary filter layer or precoat layer in

1982-06-28

1984-01-24

Cintins, Ivars C.

Liquid purification or separation

Processes

Separating

210193, 210224, B01D 2512, B01D 3702

Patent

active

044275544

ABSTRACT:
To equalize the precoat application over the length of the filter press and/or over the height of each filter cloth, the drainage of at least a part of the carrier medium occurs at at least one, and preferably at a plurality of regularly distributed, drainage points located between the ends of the filter press, and preferably at a throttled rate, so that a pressure is built up in the filter chambers. At least one filter plate, and preferably a plurality of filter plates arranged at regular intervals, is provided with additional drainage orifices for the carrier medium at the upper end thereof with such additional drainage orifices being connected by flexible hoses to one or more filtrate-collecting pipes. The total cross-sectional area of all of these additional drainage orifices is smaller than the total cross-sectional area of the filtrate drainage channels used during filtration.

REFERENCES:
patent: 1316404 (1919-09-01), Wilson
patent: 3669267 (1972-06-01), Hutton
patent: 4217224 (1980-08-01), Fismer et al.
patent: 4222873 (1980-09-01), Parsons

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