How Does Air Separation Unit Work

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Air separation unit (ASU) is used for generating industrial gases by liquefaction of atmospheric air and its separation into constituent gases such as oxygen and nitrogen. Manufacturing of ASUs is done with high quality materials. Our components used in fabricating are also sourced from the best suppliers in the industry. Nitrogen and oxygen are known as the largest and the 2nd largest industrial gases in the industry. It is said that nitrogen constitutes 79% of earth’s atmosphere and oxygen is said to make up around 21% of earth’s atmosphere by mass. However, nitrogen and oxygen used for industrial purposes require higher industrial purity.

Being the leader in manufacturing air separation units (ASUs), we are focused on delivering quality products to our customers spread across the globe. Our strict adherence to quality control has earned us the trust of our clients. Moreover, we have a team of talented engineers and technicians having years of experience in designing and fabricating air separation plant. And, we have also into a technical collaboration with ING. L. & A. Boschi, Itlay. This is an acclaimed Italian company reputed for solid designs and the latest cutting-edge cryogenic distillation technology. We customize Boschi designs and technology as per atmospheric conditions and other requirements of our customers.

Atmospheric air is let into the air separation unit where it undergoes liquefaction for separation into nitrogen, oxygen and other gases. After atmospheric air is taken inside, it is compressed and sent into a cleanup system where impurities such as hydrocarbons, carbon dioxide and moisture are removed. Afterwards, the air is moved through the heat exchangers where it is cooled to cryogenic temperatures. Then, the air is passed into high pressure distillation column where the air is physically separated into nitrogen and oxygen. At top of the distillation column, oxygen is formed in liquid form and nitrogen is formed at the bottom.