Method and an automatic device for the sharp separation and remo

Details Method and an automatic device for the sharp separation and remo Method and an automatic device for the sharp separation and remo

1989-10-18

1992-07-14

Silverman, Stanley S.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210744, 210745, 210776, 210790, 210 961, 210800, 210513, 210515, 210103, 210115, B01D 1702, B01D 17032

Patent

active

051300303

ABSTRACT:
A method for the automatic sharp separation and removal of layers of fluids from a container through a headspace in the container comprises the use of two separate and simultaneous flow streams to draw fluid from the upper layer as the apparatus descends in the fluids. The entry of the lower fluid into the apparatus is detected as a result of the different physical properties of the lower fluid by which the apparatus is caused to stop its descent into the fluid and to interrupt the flow of fluid through one of the flowsteams. The flow of the flowstream is interrupted by the entry of a gas into that stream. The apparatus is subsequently lowered into the remaining fluid and the withdrawal of the fluid through the apparatus is begun again.

REFERENCES:
patent: 4401568 (1983-08-01), Cain
patent: 4904396 (1990-02-01), Benet

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