Oxygen and electrolyte from anode side are pumped into oxygen separator, there oxygen separates with electrolyte under the action of gravity, then oxygen passes through oxygen cooler, be cooled to the temperature of 30 ~ 425℃, where after it passes through oxygen demister to remove liquid water from gas. The electrolyte at the bottom of oxygen separator is pumped back to oxygen side cell of the electrolyser after filtering and cooling, oxygen side circulation is finished.

According to the capacity and work pressure of hydrogen generator, the handling capacity of hydrogen purifier is determined. In order to guarantee the quality of hydrogen after purification, we use purified hydrogen as regeneration gas.

The total system includes hydrogen generator, hydrogen purifier, electrical and control unit as well as a hydrogen buffer tank and a storage container.In this unit, water is decomposed into hydrogen and oxygen through electrolysis, the equation is: There is a hydrogen buffer tank between hydrogen generator and hydrogen purification equipment; it is used to remove dissociative water from hydrogen and to keep the pressure of hydrogen purification unit stable. Hydrogen flows into purifier though this buffer. The action of purification equipment is to purify the hydrogen generated by hydrogen generator. The oxygen is removed though chemical reaction under the action of catalyst, and water is removed by the way of adsorption.2H₂O → 2 H₂ + O₂.

Hydrogen, oxygen and electrolyte are sent to hydrogen and oxygen separators installed in auxiliary equipment frame, there hydrogen and oxygen are separated with electrolyte under the action of gravity, hydrogen and oxygen gases pass through hydrogen and oxygen coolers separately and are cooled to the temperature of 30 ~ 425℃, then pass through hydrogen and oxygen demisters to remove liquefied water from gases, then hydrogen and oxygen are supplied out. The pressure of the system is raised to and maintained at the set pressure by means of regulation valve. The electrolyte at the bottom of hydrogen and oxygen separators is pumped back to electrolyser after filtering and cooling, then, one circle is finished.

The hydrogen from water electrolysis has the advantages of high purity and simple composition, normally only has the impurities like oxygen and water, it is easy to purify it to much higher purity used in electronic industry.

There is a hydrogen buffer tank between hydrogen generator and hydrogen purification equipment; it is used to remove dissociative water from hydrogen and to keep the pressure of hydrogen purification unit stable. Hydrogen flows into purifier though this buffer. The action of purification equipment is to purify the hydrogen generated by hydrogen generator. The oxygen is removed though chemical reaction under the action of catalyst, and water is removed by the way of adsorption.