SED-20DYQ-L — مولد نيتروجين سائل
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Fully-automatic liquid nitrogen generator producing 20 L/day (0.8 L/h) of LN2. Combines a PSA nitrogen generator (carbon molecular sieve) with a cryogenic mixed-refrigerant throttling refrigerator (single compressor with
مبدأ العمل
Two-stage system:(1) PSA nitrogen generator — purified compressed air enters a twin-tower carbon-molecular-sieve adsorber under pressure; oxygen diffuses into the sieve micropores faster than nitrogen, leaving enriched N₂ in the gas phase. PLC alternates the two towers between adsorption and depressurization-desorption regeneration.(2) Cryogenic mixed-refrigerant throttling refrigerator — a single compressor with precooling drives a regenerative multi-component mixed-refrigerant cycle(high/medium/low boiling-point pure components matched to the -40 to -196°C zone) that liquefies the nitrogen at -180°C.