Criterion equations are derived to enable the calculation of voltage and local current densities in one cell of a bipolar chlorate electrolyzer. For the cell system, expressions for current losses due to parasitic currents are derived for two models (with common bubble separator channel or with bubble separator channels for each cell). The calculation includes also the determination of the circulation rate of electrolyte in the cell system. Finally, the influence of specific parameters on the terminal voltage, parasitic currents, and circulation rate of electrolyte is discussed.The importance of bipolar electrolyzers in chlorate production is indicated by new patent applications (1,2) and especially by three installations put in operation recently (3-5). In the present paper, we carry out the chemical engineering calculations for this type of electrolyzer, i.e. for a bipolar, diaphragmless flow electrolyzer with the formation of a gas phase in the interelectrode space and with recirculating electrolyte. The present work is a continuation of a series of studies devoted to electrolyzers for chlorate production (6-8).
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