A water electrolysis hydrogen production system

Abstract

The water electrolysis hydrogen production system provided by the present invention is applied in the technical field of hydrogen production, and the system includes an electrolyzer, a hydrogen separation system, an oxygen separation system, a liquid return pipeline, a surge tank and a stabilized gas source, and the hydrogen side of the electrolyzer The liquid outlet is connected to the liquid return port on the hydrogen side of the liquid return line through the hydrogen separation system, and the liquid outlet on the oxygen side of the electrolytic cell is connected to the liquid return port on the oxygen side of the liquid return line through the oxygen separation system. The liquid outlet is connected to the liquid return port of the electrolytic cell, and the pressure-stabilizing gas source is connected to the pressure adjustment port of the liquid return line through the pressure-stabilizing tank, and the electrolyte and pressure-stabilizing gas are stored in the pressure-stabilizing tank, and the gas-stabilizing gas source is used to regulate The pressure of the surge tank can adjust the electrolyte pressure of the hydrogen production system through the surge tank and the stabilized gas source, which can maintain the electrolyte pressure within a safe range, shorten the time required for pressure relief and boosting, and improve hydrogen production efficiency , At the same time, the pressure relief process is realized by adjusting the pressure of the stabilized gas, without releasing hydrogen, which can avoid hydrogen waste.

Description

technical field [0001] The invention relates to the technical field of hydrogen production, in particular to a water electrolysis hydrogen production system. Background technique [0002] The water electrolysis hydrogen production system has been widely used in recent years due to its advantages of cleanliness, pollution-free and high hydrogen production efficiency, see figure 1 , figure 1 It is a schematic diagram of the structure of the water electrolysis hydrogen production system in the prior art. The hydrogen production system mainly includes electrolytic cells, hydrogen separators, hydrogen-side regulating valves, oxygen separators, and oxygen-side regulating valves. Among them, the electrolytic cell and the production The hydrogen power supply is connected, and the hydrogen production operation is carried out by using the electric energy provided by the hydrogen production power supply. [0003] In practical applications, there are many options for the hydrogen prod...

AI Technical Summary

Problems solved by technology

The inventors have found that when the hydrogen production power source chooses a new energy hydrogen production power source such as a wind power generation system or a photovoltaic power generation system, due to the fluctuation of the output power of the new energy hydrogen production power source, when the output power of the new energy hydrogen production power source is difficult When the hydrogen production system is kept working, the hydrogen production system will shut down and reduce the electrolyte pressure of the entire system by releasing the hydrogen in the system. When the output power of the new energy hydrogen production power supply is sufficient to support the hydrogen production system, the hydrogen production system needs Restart the machine and re-establish the electrolyte pressure required for hydrogen production. Frequent pressure relief and boosting will not only lead to low hydrogen production efficiency of the entire hydrogen production system, but also cause hydrogen waste

Images