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Design of one Operation Unit
Engineering and Construction
Pages 9 (2259 words)
An Operation Unit Design- Separation of O2 from Air Name: Institution: An Operation Unit Design- Separation of O2 from Air Extraction of oxygen from separation of air is an important chemical process in modern world. In the past, the process was predominantly through cryogenic distillation.
The technology currently accounts for more than 20% of air separations. In cryogenic distillation applied in this design, air is liquefied, and then fractionally distilled, separating the air into its constituents primarily nitrogen, oxygen and argon. This is a complex process that is the most common and efficient method of large scale oxygen production. It is also the most efficient method of storing oxygen. Liquid oxygen storage is six to eight times more efficient than high pressure cylinders. The complexities and cool down requirements highly favour continuously operating production plants; this is not usually the mode of operation for field medical facilities. Liquid oxygen can be stored, but there is a loss rate that is dependent on the size of the container, the amount of liquid oxygen in the container, and the ambient temperature. Liquid oxygen cannot be stored for long term use. It is a simple matter to safely fill high pressure oxygen cylinders using liquid oxygen. Cryogenic air separation is currently the most efficient and cost-effective technology for producing large quantities of oxygen, nitrogen, and argon as gaseous or liquid products. An air separation unit using a conventional, multi-column cryogenic distillation process produces oxygen from compressed air at high recoveries and purities. ...
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