TABLE OF CONTENTS The methods described in this chapter show how calculations can be performed for batch filters in a way that takes some account of physical properties and operating conditions. The models employed are based on fundamental theories and practical results of varying complexity, all of which are sufficiently well developed to facilitate filter design and optimisation. The simulations, which make use of the Filter Design Software described in Chapter 5, show how detailed calculation procedures can be implemented to investigate what if? questions as well as the general influence of process variables on filter cycle performance.
It is envisaged that application of procedures will help prevent the use of equipment whose actual performance falls below anticipated operating demands. Moreover, it is hoped that the user engineer can perform independent checks on equipment manufacturers designs and performance claims. Although the examples of the diaphragm filter press and Nutsche filter have been detailed to highlight what can be achieved, it is intended that the equations and models presented are used to simulate other filter types, including those in Table 6.1. In many ways it is not the detailed results shown in this chapter that are of prime importance, but the underlying methodology.
