Identification of channelling and recirculation parameters of agitated pulp stock chests |
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Authors: | Leonardo C Kammer Farhad Ein-Mozaffari Guy A Dumont Chad P J Bennington |
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Affiliation: | a Department of Electrical and Computer Engineering, Pulp and Paper Centre, University of British Columbia, 2385 East Mall, Vancouver, BC, Canada V6T 1Z4;b Department of Chemical and Biological Engineering, Pulp and Paper Centre, University of British Columbia, 2385 East Mall, Vancouver, BC, Canada V6T 1Z4 |
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Abstract: | This paper describes a mechanism for identifying the dynamics of non-ideal mixing processes. The object is to study two of the non-ideal behaviours of agitated pulp stock chests: recirculation and channelling. An initial continuous-time model, which contains physically relevant parameters, is transformed into its discrete-time counterpart. This transformation introduces some challenging identification problems, as the discrete-time parameters become a non-linear combination of the original continuous-time parameters. A system identification methodology that addresses these challenges is developed and demonstrated by means of computer simulation. The analysis of data collected from experiments on a laboratory scale model of an industrial chest shows the potential of the techniques developed in this paper. |
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Keywords: | Parameter estimation Mixing dynamics Pulp stock chests |
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