Vacuum filtration process employing a circular vacuum box

Details Vacuum filtration process employing a circular vacuum box Vacuum filtration process employing a circular vacuum box

1975-09-25

1978-01-17

Spear, Jr., Frank A.

Liquid purification or separation

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

Responsive to fluid flow

55 55, 55189, 210 77, 210393, 210406, B01D 3700

Patent

active

040691543

ABSTRACT:
A process which enables a mixture of liquid and gas, coming from a rotary vacuum filter, to be collected and simultaneously separated.
The mixture of gas and liquid is passed from the filter into a vacuum box provided with a space which rotates around the axis of the filter and is generally of circular shape, in which the liquid and gas separate, the liquid is introduced into a lower fixed space generally in the shape of a circular channel, and the gas is introduced into an upper fixed space generally in the form of a circular channel, so that the liquid and gas are collected separately.
The process and the apparatus of the invention are advantageously employed in circular table filters divided into filtration zones and provided with wash means, especially in the manufacture of phosphoric acid by the wet method.

REFERENCES:
patent: 2362300 (1944-11-01), Nyman
patent: 2677467 (1954-05-01), Giorgini
patent: 3017247 (1962-01-01), Huxley
patent: 3262574 (1966-07-01), Parmentier
patent: 3361262 (1968-01-01), Orr et al.

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