An electrolyzer interlock parking system and method

Abstract

The invention relates to an electrolytic cell interlock parking system and method, comprising a control unit, a first height sensor, a second height sensor, an anolyte high level tank, a catholyte high level tank, an electrolytic cell and a piping system, wherein the anolyte high level tank The tank and the catholyte high-level tank are respectively connected to the electrolytic cell through the pipeline system; the control unit is respectively connected to the first height sensor and the second height sensor, and is used to determine the current liquid level height of the anolyte high-level tank and the catholyte high-level tank according to the current liquid level of the catholyte high-level tank. Level height and low liquid level alarm value, determine whether to send an alarm signal or an interlock shutdown signal, and cut off the power supply of the electrolyzer according to the interlock shutdown signal. The invention ensures the safety of the electrolyzer when the interlock is triggered to stop.

Description

technical field [0001] The invention relates to the field of electrolyzers, in particular to an electrolyzer interlock parking system and method. Background technique [0002] In the current process design of traditional electrolyzers in the chlor-alkali industry, there is a hidden danger that when the electrolyzer system triggers interlock shutdown due to certain factors, if the liquid level of the anolyte high level tank is not enough to fill the anode chamber of the electrolyzer, it cannot catch up in time. If chlorine gas is used, the ionic membrane is easily corroded by chlorine gas, causing pinholes or large-scale damage. After parking, chlorine gas stays on the top of the anode chamber, and chlorine gas diffuses into the membrane, causing membrane corrosion; another hidden danger is that the electrolyzer system is triggered by some factors. During interlock parking, if the liquid level of the catholyte high level tank is not enough to fill the cathode chamber of the e...

AI Technical Summary

Problems solved by technology

[0002] In the current process design of traditional electrolyzers in the chlor-alkali industry, there is a hidden danger that when the electrolyzer system triggers interlock shutdown due to certain factors, if the liquid level of the anolyte high level tank is not enough to fill the anode chamber of the electrolyzer, it cannot catch up in time. If chlorine gas is used, the ionic membrane is easily corroded by chlorine gas, causing pinholes or large-scale damage. After parking, chlorine gas stays on the top of the anode chamber, and chlorine gas diffuses into the membrane, causing membrane corrosion; another hidden danger is that the electrolyzer system is triggered by some factors. During interlock parking, if the liquid level of the catholyte high level tank is not enough to fill the cathode chamber of the electrolytic cell, the hydrogen cannot be driven away in time, which may cause flash explosion of the electrolytic cell, and the hydrogen enters the anode through the damaged parts such as the pinhole of the ion membrane , mixed with chlorine gas, when the hydrogen content in chlorine reaches the explosion limit of 5%-87.5%, it may explode

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