Imperial Chemical Industries Limited

James W Wem

Rowland J Brierley

William Parten

The solid component of a slurry comprising a first liquid is driven into a second liquid by an enhanced gravitational field by rotating the slurry in contact with a zone comprising the second liquid. The liquids may be miscible. The product is a slurry of the solid in the second liquid.

Process of replacing a liquid component of a slurry by a second liquid

A gas-liquid contact apparatus includes a rotor having an outer wall parallel to the axis of rotation of the rotor, a permeable element mounted within the rotor for rotation therewith, inlets to supply liquid and gas to the rotor and outlets for conducting a gas and liquid respectively from the rotor. The permeable element is made of a plurality of strips of permeable material in layers superimposed progressively from the outer wall inwards towards the axis of rotation, the strips being in end-to-end abutment and the abutments being circumferentially staggered in adjacent layers.

Centrifugal gas-liquid contact apparatus

In centrifugal gas-liquid contact apparatus, liquid hold-up is reduced by the provision of guide means to separate the liquid outflow from the gas inflow to the rotor.

In centrifugal apparatus for gas-liquid contacting, liquid discharged from the rotor into a surrounding chamber is led from the chamber by guide means on the chamber wall.

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Cleveland, United Kingdom

James W Wem