Oxygen Generation
Molecular sieve for PSA and VPSA oxygen generation
Nitrogen-selective grades for medical and industrial oxygen concentrators — high N2 uptake at a low pressure ratio, so the unit uses less air per cubic metre of O2.
Request a quoteDownload TDS
Oxygen is produced on site by PSA and VPSA plants using a nitrogen-selective zeolite. Air is compressed and passed through the bed; nitrogen is retained and oxygen leaves as product.
Grade selection has a direct effect on oxygen recovery and product purity, which is why Li-LSX and X-type grades are normally specified for this duty.
Higher N2 uptake
LiLSX takes up more nitrogen per cycle than standard zeolites, which cuts air consumption.
Stable purity
Purity held in the 90–95% band across the cycle, with bead strength for fast cycling.
Refills as well as new builds
Supplied for new vessels and for refilling existing beds, with the bead size matched to the vessel.
Recommended Grades
- Li-LSX Molecular Sieve — Lithium-exchanged grade for oxygen PSA and VPSA service.
- 13X APG Molecular Sieve — Used in the front end of VPSA and cryogenic oxygen plants.
Typical service conditions
| Parameter | Typical range | Why it matters |
|---|---|---|
| Oxygen purity | 90–95% | Set by cycle design and bed sizing |
| Adsorption pressure | 1.5–4 barg | Lower ratio favours LiLSX |
| Cycle time | 30–120 s | Short cycles need high attrition resistance |
| Air-to-oxygen ratio | 4–6 | Lower is better for power consumption |
| Service life | 5–10 years | Shortened by oil and water in feed air |
Information We Need to Quote
| Item | Your value |
|---|---|
| Target oxygen purity and flow | e.g. 93% at 50 Nm³/h |
| Adsorption pressure and cycle design | e.g. 3 barg, 60 s cycle |
| Feed air treatment available | e.g. refrigerated dryer plus filters |
| Bed dimensions, if refilling | e.g. 200 L vessel refill, LiLSX |
Documents
- Technical Data Sheet (TDS) — available on request Download PDF
- Safety Data Sheet (SDS) — available on request Download PDF
- Certificate of Analysis — issued per lot, based on batch test results
Frequently Asked Questions
Why is Li-LSX preferred over standard X grades?
Lithium exchange increases nitrogen adsorption capacity and nitrogen-over-oxygen selectivity, which supports higher oxygen recovery and product purity for the same vessel size.
What purity can be achieved?
Product purity depends on plant design, cycle and operating pressure rather than on the adsorbent alone. Share your target purity and flow and we will advise on grade and bed sizing.
How should the adsorbent be handled before loading?
Keep it sealed and dry until loading, avoid exposure to liquid water and oil, and follow the loading and start-up procedure supplied with the material.
Factory-Direct Supply
We manufacture molecular sieve at our own plant and export directly to industrial buyers and distributors — no trading layer between the production record and your certificate of analysis. Every lot is tested before release and shipped with a lot-specific COA. How we make it · Quality control · Request a factory quote
PSA oxygen duty
Li-LSX and 13X beds power medical and industrial PSA oxygen generators.
