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Název: | Development of a control algorithm for the optimized soaking of cured hides | ||||||||||
Autor: | Kolomazník, Karel; Prokopová, Zdenka; Vašek, Vladimír; Bailey, David | ||||||||||
Typ dokumentu: | Recenzovaný odborný článek (English) | ||||||||||
Zdrojový dok.: | Journal of American Leather Chemists Association. 2006, vol. 101, issue 9, p. 309-316 | ||||||||||
ISSN: | 0002-9726 (Sherpa/RoMEO, JCR) | ||||||||||
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Abstrakt: | The advantages and possible complications of mathematical simulations ? indirect modelling of tanning processes are discussed in the introduction. As an example of deterministic models of mathematical simulation, a diffusion model for the cured hide soaking operation is presented. The minima of the main operation costs are determined, following from their dependence on the consumption of the soaking liquid ? technological water. The minimum of the costs depends, besides economical and technological parameters, on the values of physical constants ? the speed constant of the dissolving of the surface solid salt (pre-soak washing), the transport parameter that enables a qualified approximation of the duration of the soaking operation itself, and the effective diffusion coefficient of salt in the inner volume of the cured hide. A possible occurrence of concentration shock is modelled, as well as a method of its prevention. Experimental methods for the determination of physical constants are also presented. | ||||||||||
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