What is a PPU air separation system purifier? What are its application scenarios?

PPU air separation system refers to the application of air separation pre-purifier (Pre-Purification Unit) in air separation equipment, which is mainly used to remove impurities and harmful substances in the air. It uses physical or chemical methods to adsorb or react impurities such as moisture, carbon dioxide, hydrocarbons, and nitrogen oxides in the air, thereby achieving the purpose of purifying the air. The air separation unit is an important equipment for separating air components in industrial production, and the purifier is an indispensable component of the unit. So, what role does the purifier in the air separation unit play?
The purifier in the air separation system can remove impurities and improve the purity of the gas. During the air separation process, there will be many impurities in the air, and the purifier will remove these impurities through adsorption and chemical reactions, so that the purity of other gases will be improved; it can also ensure the stable operation of the air separation unit. In addition to refining high-purity gas, the purifier also bears the responsibility for the operation of the entire air separation system. During the operation of the air separation unit, if there are too many impurities, it may cause equipment blockage, corrosion or performance degradation. The purifier can reduce the occurrence of these problems, thereby extending the life of the equipment, which can also reduce the maintenance cost of the equipment. The working principle of the purifier mainly depends on the adsorbent or catalyst inside it. When the air passes through the purifier, these substances will react with the impurities in the air, adsorbing them or converting them into harmless substances.
The application scenarios of the air separation system are very wide, and it is used in petrochemical, metallurgical, medical and electronic manufacturing industries. For example, in the metallurgical industry, oxygen top blowing in steel smelting increases furnace temperature and reaction efficiency; furnace atmosphere protection, metal heat treatment quenching, and oxidation prevention; in the electronics manufacturing industry, high-purity nitrogen is used in vapor deposition, photoresist drying and other processes in semiconductor chip production to prevent impurity contamination; oxygen is used in plasma etching.

So, what is the catalyst for the pre-purifier of the PPU air separation system? What is its working principle? The next article will continue to share with you.

author：Hazel
date:2025-06-26