TABLE OF CONTENTS In this chapter the equations and models previously described in detail (Wakeman and Tarleton, 2005a) are summarised and brought together so that the various phases in a batch filter cycle can be related to one another and meaningful process engineering models obtained. These models facilitate sequential calculations to provide the basis for computer simulations. Whilst there is scope to predict the performance of most of the filter types described in Chapter 1, those shown in Table 6.1 are presented in sufficient detail to model their filter cycles.
| Filter/press type | Compression deliquoring | Washing | Gas deliquoring |
|---|---|---|---|
| Single leaf (Nutsche) filter pressure and vacuum | Y | Y | |
| Multi-element filter horizontal and vertical leaf, candle | Y | Y | |
| Filter press plate and frame, and recessed plate | Y | Y | |
| Horizontal diaphragm filter press | Y | Y | Y |
| Tube press | Y | Y | |
| Vertical diaphragm filter press single and double-sided | Y | Y | Y |
| All feature an initial cake formation (filtration) phase(s). |
Section 6.1 describes the principal features of filter cycles in relation to common batch filters while Sections 6.2 and 6.3 present the equations required to model each phase. An outline procedure for batch centrifuge cycles is also shown. Section 6.4 provides detailed example calculations for the diaphragm filter press and the Nutsche pressure filter...
