Since 1978, the technology of designingmanufacturing large-sizedmedium-sized air separation equipment has been introduced from the German company Linde, which has been successfully used in the practice of air separation for more than forty years.

Depending on the volumepressure of oxygen-nitrogen products, various technological routes can be used:

External compression of oxygen: depending on the different pressure of the oxygen product produced in the refrigerator, it is dividedtwo options: self-injection of oxygen + external compressiondirect external compression;

Internal oxygen compression: obtaining the required oxygen product directly from the refrigerating chamber using a booster air compressor + a process liquid oxygen pump.

External nitrogen compression: internalexternal compression.

	Air separation equipment