Foam controller

Details Foam controller Foam controller

B - Operations, Transporting

01

D

362/61

B01D 19/04 (2006.01) B01D 19/02 (2006.01) D21C 9/02 (2006.01)

Patent

CA 1256223

W. E. Sande et al. 1-1-1 FOAM CONTROLLER ABSTRACT OF THE DISCLOSURE 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.

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