Differential pressure adjusting device of electrolytic hydrogen production system, and electrolytic hydrogen production system

Abstract

The invention provides a differential pressure adjusting device of an electrolytic hydrogen production system, and the electrolytic hydrogen production system. The differential pressure adjusting device comprises an oxygen side separator, a hydrogen side separator and a pipeline communicating the oxygen side separator with the hydrogen side separator, and a movable part used for adjusting the differential pressure of the two sides of the oxygen side separator and the hydrogen side separator is arranged in the pipeline. The pressure difference serves as driving force to drive the movable part to adjust the pressure difference between the two sides of hydrogen and oxygen, extra energy output is not needed, energy consumption and manpower are avoided, potential safety hazards caused by the pressure difference between the two sides of hydrogen and oxygen are eliminated, the pressure difference between the two sides of hydrogen and oxygen can be adjusted in real time, the flexibility is high, pollution is avoided, carbon emission is avoided, safety guarantee is provided for development of the national hydrogen energy industry, and support is provided for achievement of national carbon neutralization when carbon reaches the peak.

Description

technical field [0001] The present application relates to the technical field of electrolytic hydrogen production, and in particular to a pressure difference regulating device of an electrolytic hydrogen production system and an electrolytic hydrogen production system. Background technique [0002] At present, the mainstream industrial water electrolysis hydrogen production equipment is an alkaline water electrolyzer. Under the blessing of direct current, the water in the electrolyzer will be decomposed into 1 part of hydrogen and 1 / 2 part of oxygen at the cathode and anode respectively. The ideal water electrolysis hydrogen production process is that the electrolyzer is full of lye, and the pressure on the hydrogen side and the oxygen side in the electrolyzer should be equal. However, in the actual production process of water electrolysis, since the amount of hydrogen and oxygen produced by water decomposition satisfies the 2:1 relationship, there will be a pressure differe...

AI Technical Summary

Problems solved by technology

However, in the actual production process of water electrolysis, since the amount of hydrogen and oxygen produced by water decomposition satisfies a 2:1 relationship, there will be a pressure difference between hydrogen and oxygen. Driven by the pressure difference, hydrogen and oxygen can easily pass through the diaphragm and interact with each other. Mixing, resulting in the decrease of gas purity and even the occurrence of vicious accidents such as explosions

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