Ionic membrane electrolytic bath

Abstract

The invention relates to an ionic membrane electrolytic bath. A uniform liquid bubble-eliminating device is arranged between two anodes in each anode side frame, each uniform liquid bubble-eliminating device comprises a plurality of diversion pipes arranged along the vertical direction and a plurality of diversion circulating plate clamps, which are positioned in the anode side frame, the plurality of diversion pipes are arranged in a row along a left-and-right direction, a plurality of long strip-shaped through holes are formed in the side wall of each diversion pipe from top to bottom along the left-and-right direction, the plurality of diversion circulating plate clamps respectively penetrate through the through holes in one row of the plurality of diversion pipes along the left-and-right direction from different height positions, each pair of the diversion circulating plate clamps comprises two diversion circulating plates which are arranged side by side along a front-and-back direction, the plate surfaces of the circulating plates are positioned in the left-and-right direction, and the spacing interval between the lower edges of the two diversion circulating plates is smaller than that between the upper edges of the two diversion circulating plates. The invention aims at providing the ionic membrane electrolytic bath which can prolong the service life of an ionic membrane, reduce the consumption of electrical energy and reduce the production cost.

Description

technical field [0001] The invention relates to an ion membrane electrolyzer. Background technique [0002] Existing unipolar ion-exchange membrane electrolyzers for the production of caustic soda contain an external circulation structure for the electrolyte. When energized and running, due to the absence of an internal circulation structure, the concentration of the electrolyte in the anode unit is unevenly distributed, resulting in the flow of the electrolyte The current density distribution is also uneven, which in turn leads to an increase in the resistance of the electrolyte and a higher cell voltage. In addition, the structure of the cathode chamber of the existing ion-exchange membrane electrolyzer belongs to the type of electrolytic cell with a pole distance, the electrode mesh is large, and the current density distribution is uneven. The existence of the pole distance will also increase the resistance of the electrolyte and the cell voltage. However, the resistance...

AI Technical Summary

Problems solved by technology

[0002] Existing unipolar ion-exchange membrane electrolyzers for the production of caustic soda contain an external circulation structure for the electrolyte. When energized and running, due to the absence of an internal circulation structure, the concentration of the electrolyte in the anode unit is unevenly distributed, resulting in the flow of the electrolyte The current density distribution is not uniform, which leads to an increase in the resistance of the electrolyte and a higher cell voltage

In addition, the structure of the cathode chamber of the existing ion-exchange membrane electrolyzer belongs to the type of electrolytic cell with pole spacing, the electrode mesh is large, the current density distribution is uneven, and the existence of the pole spacing will also increase the resistance of the electrolyte and the cell voltage.

However, the resistance of the electrolyte increases and the voltage of the tank increases, which will lead to high power consumption per ton of alkali and increase production costs.

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