Foam controller

Details Foam controller Foam controller

1984-08-31

1986-11-25

Alvo, Steve

Paper making and fiber liberation

Apparatus

Automatic control

55178, 162254, B01D 1904, D21C 328

Patent

active

046247459

ABSTRACT:
An apparatus for controlling the rate at which a defoaming agent is supplied to a processing vessel. A first sensing element senses the quantity of liquid in the vessel. A second sensing element senses the position of the upper surface of the foam. A signal processing circuit combines the outputs of the first and second sensing elements to produce a signal that is used to optimize the rate at which defoaming agent is supplied to the vessel. In this manner, the amount of defoaming agent that is used is reduced, thereby reducing the cost of operating the process.

REFERENCES:
patent: 3425952 (1969-02-01), Gaughan et al.
patent: 3427252 (1969-02-01), Gaughan et al.
patent: 4003724 (1977-01-01), Payne et al.
patent: 4146425 (1979-03-01), Gutzeit

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