In terms of nitrogen purification, there are different purification methods and processes for different user requirements, as follows

Troy spoke briefly about nitrogen purification for the three different users.

The first type of user:
The use of nitrogen as a general protective gas, such as nitrogen protection gas in the steel plate treatment in the steel industry, this nitrogen is mainly

The harmful impurities are oxidizing impurities, water and oxygen are the most critical.
For this user, we use deoxidation drying process, do not remove methane, hydrogen and other reducing impurities, can save

Equipment investment, save money for users, the use of automatic high-purity nitrogen purification equipment online purification;

The second type of user:
Users in the electronics industry have high requirements for various impurities in nitrogen, and must use a 2-level process, and the requirements are complete

Stainless steel pipes, containers, valves, the use of deep purification process, so that various impurities indicators are less than 0.1ppm, the use of fine

The dense filter makes the particles less than 0.1um, which can be purified online by automatic ultra-pure gas purification equipment.

The third type of user:
Nitrogen purification in the circulating nitrogen drying process generally requires only deoxygenation, which is carried out by hydrogenation catalytic deoxygenation

Purification, due to the circulation of nitrogen in the circulating nitrogen drying system is relatively large, generally 3000-10000nm3 /h, for

Water is not required, so the hydrogenation catalytic deoxygenation method is the most simple and effective, and the control (automatic control) is added appropriately

After the excess hydrogen passes through the catalyst bed, the oxygen and hydrogen react to form water, and the residual oxygen is below 1-3ppm.