Low temperature ASU liquid oxygen nitrogen air separation unit
1. Air compressor: Air is compressed at low pressure of 5-7 bar (0.5-0.7mpa)
2. Pre-cooling system: Cool the air temperature to about 12 degrees Celsius.
3. Air purifier: double molecular sieve dryer
4. Expander low temperature air cooling: The turbo expander cools the air temperature below -165 to -170 degrees Celsius.
5. The air separation column separates the liquid air into oxygen and nitrogen
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