Method for removing a filter cake

Details Method for removing a filter cake Method for removing a filter cake

1991-11-18

1993-01-12

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210791, 210797, B01D 2446

Patent

active

051787776

ABSTRACT:
The invention relates to a method for removing a filter cake from a liquid-saturated suction surface, when the liquid in the creation of the filter cake is sucked through the filter surface of the filter element. According to the invention, on the filter surface of the filter element (1) there is formed a liquid film (3) by means of reversed pressure effected through the filter element (1). Essentially immediately after the creation of the liquid film, at least one gas blowing is directed to the filter surface of the filter element (1) in order to detach the filter cake (2) located on the filter surface.

REFERENCES:
patent: 4357758 (1982-11-01), Lampinen
patent: 4404106 (1983-09-01), Muller et al.
patent: 4552669 (1985-11-01), Sekellick
patent: 4931186 (1990-06-01), Ford et al.
patent: 5062968 (1991-11-01), Warning

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