The liquefaction device cools the oxygen and nitrogen in the air to their liquefaction temperature through a series of processes, thereby achieving the liquefaction of these two gases. Liquefied oxygen and nitrogen have the advantages of higher energy density and easy storage and transportation, and are widely used in multiple fields.
Liquefaction units are usually equipped with liquid backup systems, including storage tanks, booster pumps, gasifiers, and other facilities. These facilities can quickly restore the liquid storage in the storage tank when the air separation equipment fails, ensuring a stable supply of pipeline gas and avoiding production interruptions. Liquefied oxygen and nitrogen can not only be sold directly, but also used as chemical raw materials for other production processes, thereby creating more economic benefits for enterprises. The liquefaction device can also liquefy and recover released oxygen or nitrogen, and these recovered gases can also be exported and generate revenue. The cold generated during the liquefaction process can be fully utilized, thereby reducing the energy consumption of the entire air separation process. The liquefier can also play a role in cold capacity distribution and regulation, helping to maintain a constant temperature of the reflux gas at the cold end of the switching heat exchanger or cold storage device, thereby improving the stability of the entire air separation system.
The core purpose of liquefaction unit in air separation equipment is to liquefy oxygen and nitrogen, and it also has multiple additional purposes such as providing backup supply, creating economic benefits, improving energy utilization efficiency, and enhancing system stability.
