Fluid replacement type ionic membrane electrolytic bath

Abstract

The invention discloses a fluid replacement type ionic membrane electrolytic bath, and relates to electrolytic baths. A main body structure of the fluid replacement type ionic membrane electrolytic bath comprises an anode frame chamber and a top gas and fluid separation chamber; the anode frame chamber is of a frame structure, a plurality of gratings which are longitudinally arranged are arranged on the frame structure and divides the frame structure into a plurality of unit chambers, the width of the first unit chamber is a half unit, and the width of other unit chambers is one unit; the interior of each unit chamber is provided with a fluid replacement pipe, a circulating plate, a side connecting pipe and an inlet pipe from top to bottom; and the circulating plates penetrate the second unit chamber to the last unit chamber, and faces of the circulating plates incline by a certain angle. The ionic membrane electrolytic bath can be widely applied to the electrolytic process of the high current density or the low requirement for the membrane face concentration difference, for example, the electrolytic bath can be applied to the technology of processes like the ionic membrane electrolysis of the chlorine industry. The electrolytic bath membrane face concentration difference can be effectively reduced, and the membrane face environment is optimized; and in the production process, the service life of an ionic membrane can be prolonged, and under the high-current density, electrolysis is carried out, and the product yield can be effectively increased.

Description

technical field [0001] The present invention relates to an electrolytic cell, in particular to a liquid replenishing ionic membrane electrolytic cell. Background technique [0002] Ion membrane electrolysis is a new technology developed in the 1970s. Compared with the traditional mercury method and diaphragm method, the ion membrane electrolysis method has the advantages of low total energy consumption, no pollution, high product purity, and convenient operation. Therefore, it is recognized as the development direction of the technological transformation of old plants in the chlor-alkali industry and the development of new electrolysis units. Ion membrane electrolysis cell is a device that separates the products by using cation exchange membrane to isolate the anode and cathode of the electrolysis cell. Based on the selective permeability of the cation exchange membrane, the ions with positive valence enter the cathode side from the anode side through the membrane surface, ...

AI Technical Summary

Problems solved by technology

However, the high current density causes the electrolytic reaction rate to be too fast, and the ion concentration distribution on the membrane surface is uneven. For example, in the chlor-alkali process, the electrolyte concentration on the membrane surface decreases continuously from bottom to top. This harsh membrane surface environment will seriously affect the membrane surface. Electrolytic reaction process, reducing the service life of the ion membrane and other issues

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