When your oxygen demand exceeds the capabilities of PSA or VPSA systems—and when you need nitrogen or argon too—Air Separation Units (ASUs) become the ideal solution. But ASUs are large-scale, capital-intensive projects that require careful planning.
1. What Is an ASU?
ASUs use cryogenic distillation to separate air into oxygen, nitrogen, and argon by cooling air to -196°C and extracting gases based on boiling points.
2. When Should You Consider an ASU?
You should consider an ASU if:
You need multiple gas types (O₂, N₂, Ar)
Your consumption exceeds 10,000 Nm³/h
Your facility runs 24/7
You want independent, on-site gas generation
3. Key Considerations Before Investing
Evaluate CAPEX and OPEX carefully
Check land, utility, and safety requirements
Understand energy consumption per Nm³
Plan for future expansion if needed
4. Conclusion
If your business needs large-scale, high-purity, multi-gas generation, an ASU is a future-proof investment.
