Abstract
For layer –by- layer calculation of cation exchanger regeneration by limited volume method the value of the coefficient of mutual diffusion of sodium calcium ions for sulfonated coal and Ky-2 cation exchangers is determined. Determined is the height of a single calculated layer which makes it possible to eliminate the mass transfer equation from the description of the process and to restrict balance equation and the isotherm equation. Developed is a computer program for layer-by-layer calculation of the process of filter regeneration which allow it to get output curves corresponding to output curves for industrial cation exchangers. The obtained dependences can be used in layer-by-layer calculation of the regeneration process and with a complete simulation of the regeneration process of the sodium cation exchanger which allows to determine the optimal technological parameters of the filter for various initial conditions
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