Alguns aspectos do projeto de reatores eletroquímicos para a produção de gases.

Abstract

A theoretical and experimental study of an electrochemical system was carried out in order to produce the gases, in order to elucidate the important parameters in the design of an electrochemical reactor. The system used was the production of hydrogen to oxygen by electrolysis of a solution of potassium hydroxide; the experimental study is composed of three separate stages. In the first one, the contributions of the electromagnetic kinetics to the phenomena of the gas evolution associated with the total voltage of etethisis were determined, the second stage and the more extensive was related to the variations in the resistance of the electrolyte due to the gas retention, of the gas bubbles in the Solution It was found that the heat produced by the Joule effect on the cell showed an important effect on the gas retention due to the dependence on the temperature of the electrolyte properties. The heating effect was taken off. calculate the volume fraction of the gas in the electrolyte under different conditions. In the third step, studies were carried out to analyze the effect of hydrogen gas evolution on the mass transfer rate of K3Fe (CN) reduction in the electrolyte. A similar study was carried out to elucidate the effect of gaseous evolution of oxygen on the velocity of mass transfer of K4Fe (CN) oxidation. A literature review on electrolytic gas systems and the applicability of this was done, and the results obtained from this study were discussed for the design of electrochemical reactors.