Electrochemical fluorination external circulation flexible electrolysis system

Abstract

The invention discloses an electrochemical fluorination external circulation flexible electrolysis system which comprises a cathode copper bar, an anode copper bar, a cathode cable, an anode cable, anelectrolytic cell, a circulating pump, a cooler I, a gas-liquid separator, a gas condenser and a cooler II. A cell body of the electrolytic cell is internally provided with a left-end electrode cathode plate, a right-end electrode cathode plate and a plurality of electrolysis groups I. The electrolytic cell is formed by connecting n electrolysis groups I in parallel, each electrolysis group I isformed by connecting two electrolysis groups II in parallel, and each electrolysis group II is formed by connecting 2-20 electrolysis cabs in series. According to the invention, the electrolytic cellis highly integrated, the successfully developed bipolar series-parallel combined filter pressing type electrolytic cell is used, and heat generated by electrode reaction is completed through the cooler outside the electrolytic cell, so that the corrosion risk of an electrolyte channel is reduced, and the system risk caused by blockage of a certain cab is solved.

Description

technical field [0001] The invention relates to the technical field of organic electrochemical fluorination, in particular to an external circulation flexible electrolytic system for electrochemical fluorination. Background technique [0002] The electrochemical fluorination system of organic matter is divided into two types: internal circulation of electrolyte and external circulation. The internal circulation system of electrolyte is usually improved and optimized on the basis of Simmons fluorination electrolysis system, but the electrolyte is not circulated, and the heat generated by the electrode reaction passes through the inside of the electrolytic cell. The refrigerant in the heat exchange tube is taken out of the system, resulting in the problem of large volume and low efficiency of the fluorination electrolytic cell, which is difficult to fundamentally solve. [0003] The external circulation system of the electrolyte draws lessons from the electrolytic production o...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings in the prior art, and propose a flexible electrolytic system for electrochemical fluorination external circulation, which highly integrates the electrolytic cell and uses the successfully developed bipolar series-parallel combined pressure Filter type electrolytic cell, the heat generated by the electrode reaction is completed by the cooler outside the electrolytic cell, the gas production of the electrolytic cell is adjusted by closing the anode single switch, the electrolytic group I adopts the structure of positive in the middle and negative at both ends to reduce the total voltage of electrolysis Half, to reduce the risk of electrolyte channel corrosion, use several electrolysis groups I in parallel to ensure the output of the electrolysis system, if a certain electrolysis chamber is blocked and the electrolysis voltage is higher than 8V, you only need to open the single switch in the electrolysis group I, The other electrolytic group I can continue to work without interference, which solves the system risk caused by the blockage of a small chamber

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