Contacting liquids and solids in countercurrent

Details Contacting liquids and solids in countercurrent Contacting liquids and solids in countercurrent

1974-01-23

1976-05-18

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

23270R, 210189, B01D 1502

Patent

active

039576353

ABSTRACT:
The invention is concerned with an improvement of the process and apparatus disclosed in British patent specification 1 070 251. Slids pass in countercurrent to a liquid through a number of stages. Liquid flow is cyclically pulsed so that during one part of a cycle the liquid flows upwardly, during another part the solids settle in the liquid and in still a further part solids pass between the stages and out of the last stage in countercurrent to the liquid flow. The improvement of the present invention is that the last stage is so valved that less solids can pass out of the system than can pass between the stages.

REFERENCES:
patent: 894792 (1908-07-01), Eschellmann et al.
patent: 3549526 (1970-12-01), Brown

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