Parameter estimation and simulation of dependence of constant pressure batch dewatering on initial solids concentration |
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Authors: | Rahul Konnur Sasanka Raha |
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Institution: | 1. Engineering and Industries Services, Tata Consultancy Services Limited, 1 Mangaldas Road, Pune 411 001, India;2. Tata Research Development and Design Centre (TRDDC), 54B Hadapsar Industrial Estate, Pune 411 013, India |
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Abstract: | The problem of predicting dependence of constant pressure batch dewatering of particulate suspensions on feed solids concentration is considered. Scaling transformations which demonstrate that evolution in the cake consolidation stage of dewatering is governed by an underlying self-similar behavior are proposed. The self-similar master curve, which can be obtained using only one set of experimental dewatering data obtained with a feed suspension having solids concentration above the gel point, is employed for estimating dependence of key dewatering process parameters on feed solids concentration. Using the parameter estimates in a Darcy's law based dewatering model, it is shown that the complete evolution of dewatering for a desired feed solids concentration can be predicted with reasonable accuracy. The approach is simpler to implement in comparison to available pressure filtration models, which require several suspension characterization experiments. |
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Keywords: | Dewatering Pressure filtration Modeling Simulation Suspensions Solid&ndash liquid separations |
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