TARLETON, E.S., 1998. Pressure leaf filter control and the prediction of performance. IN: World Congress on Particle Technology 3: a four-day symposium incorporating the 3rd biennial particle technology forum of the AIChE held at the Brighton Centre, UK, 6-9 July, 1998. Rugby, UK : Institution of Chemical Engineers.
The widespread reliance on heuristics for the design and specification of particle/fluid separation
devices has prompted a new approach to pressure filtration which incorporates the principles of
mechatronics. By combining accurate experimentation with classical filtration models it is shown
how the performance of a deadend pressure leaf filter can be predicted over a range of process
conditions. An experimental apparatus is described along with data which illustrate its versatility
and accuracy. Experimental data obtained from the apparatus with aqueous mineral suspensions
are shown to compare favourably with theoretical predictions of important design parameters such
as cake height and cumulative volume of filtrate. Preliminary results from unique constant flow
filtration experiments are also presented where the air pressure within the filter was controlled
through a combination of flow & pressure transducers and an electronically adjusted pressure
regulator. Their combination allowed filtrations performed under different pressure/flow regimes to
be compared as identical suspension characteristics could be maintained.