KOH (electrolyte)
4. Gas-liquid separation device
The gas-liquid separation device is equipped with hydrogen separation scrubber, oxygen separator, hydrogen cooler, gas-water separator, lye circulation pump and other equipment. The electrolyte containing hydrogen and oxygen passes through the hydrogen and oxygen separators, and is separated from the electrolyte lye under the action of gravity. The separated oxygen is discharged to the outdoors, and the hydrogen is further washed, cooled, separated and removed in the separation device to remove liquid droplets. Then enter the hydrogen purification unit.
5. Hydrogen purification device
In the hydrogen purification device, the hydrogen is catalyzed by the catalyst to react with the residual oxygen in the hydrogen as follows: 2H2+O2=2H2O,
After cooling, adsorption, and separation, high-purity hydrogen with a purity of 99.999% is obtained.
6. Hydrogen storage equipment
The high-purity hydrogen is distributed to each hydrogen storage tank for storage after the pressure is balanced by the hydrogen manifold rack.
7. Hydrogen supply system
At present, there are mainly three methods of outbound hydrogen storage: hydrogen cylinder racks, long tube trailers, and solid hydrogen storage devices. Because solid hydrogen storage devices are rarely used in China, they are still in the research and development stage in China. Therefore, hydrogen cylinders are generally considered And long tube trailers as the main means of transportation.
The main technological process of the hydrogen supply system is as follows:
Hydrogen storage tank → hydrogen bus bar → hydrogen buffer tank → hydrogen compressor → hydrogen charging bus bar (or filling device) → hydrogen cylinder group (or long tube trailer).
8. Auxiliary system
The hydrogen production auxiliary system mainly includes: algae removal preparation, refrigeration system, compressed air system, lye storage system and suction and sweep system.
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