| 摘要 |
<p>A new internal design for ion-exchange membrane electrolyser suitable for electrochemical reactions accompanied by gas evolution and anolyte concentration decrease and/or catholyte concentration increase is described. The electrolyser is of the type provided with a channel suitable for collecting and de-mixing the gas-liquid electrolyte bi-phase fluid positioned in the upper part, with vertical downcoming ducts connected to said channel for recirculating a portion of de-mixed liquid electrolyte, with a duct, also vertical, for discharging the gases and part of the de-mixed electrolyte to the external environment, with a lower distributing pipe for feeding the electrolyte and with vertical strips of sheet for supporting the electrodes. The device of the invention consists in an intermediate plate indicatively halfway between the anode and/or the cathode and the respective compartment wall, wherein said intermediate plate has the upper and lower edge respectively spaced apart from the channel and from the lower distributing pipe. The intermediate plate of the invention allows to increase the liquid recirculation inside the compartment, to uniform the flow of bi-phase fluid along the whole length of the channel with a reduction of the inner pressure fluctuations and to improve the electrolyte concentration homogeneity in both the longitudinal and the vertical direction.</p> |
