A Dynamic Model for Rectangular Capillary Suction Apparatus
Resource
Journal of Chemical Technology and Biotechnology, v.60, p.369-374
Journal
Journal of Chemical Technology and Biotechnology
Journal Volume
v.60
Pages
369-374
Date Issued
1994
Date
1994
Author(s)
Abstract
Abstract A model for the dynamic behaviour of wet front distance and liquid saturation in rectangular capillary suction apparatus (RCSA) is developed. Governing equations based on the mass/momentum balance are derived and solved numerically. The calculation shows that the effects of the intial conditions on system dynamics vanish rapidly, and the system will then evolve along a slow manifold independent of the initial conditions. When time is large, the dimensionless wet front distance with time is a straight line on a log–log plot with slope 1/2, and the liquid saturation under the inner cell will approach to a constant which depends only on the product of solid concentration and the averaged specific resistance if the RCSA is fixed. Optimum experimental conditions are suggested. A rapid method based on the model for estimating the averaged specific resistance of cake is proposed and compared with experimental findings.
Type
journal article