AYAN AYAN-95LB PSA Nitrogen Generator with Advanced Carbon Molecular Sieve
| Brand | AYAN |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | AYAN-95LB |
| Output Flow Rate | 95 L/min |
| Output Pressure | 0–0.6 MPa |
| Nitrogen Purity | 99% |
| Dew Point | −40 °C |
| Nitrogen Generation Principle | Pressure Swing Adsorption (PSA) |
Overview
The AYAN AYAN-95LB PSA Nitrogen Generator is an engineered solution for on-site, continuous nitrogen production from ambient compressed air. It operates on the well-established principle of Pressure Swing Adsorption (PSA), utilizing high-performance carbon molecular sieve (CMS) as the selective adsorbent. Under controlled pressure cycles, oxygen, water vapor, and CO₂ are preferentially adsorbed onto the CMS micropores due to their smaller kinetic diameter and higher diffusivity, while nitrogen—exhibiting slower diffusion kinetics—remains in the gas phase and is collected as enriched product gas. This process occurs at ambient temperature, eliminating the need for cryogenic cooling or chemical reagents. Designed specifically for applications requiring reliable, medium-purity nitrogen (up to 99% N₂), the AYAN-95LB delivers stable output under variable load conditions and integrates seamlessly into laboratory, pilot-scale, and small-to-medium industrial workflows where consistent inert atmosphere control is critical.
Key Features
- Stable 95 L/min nitrogen output at 0–0.6 MPa working pressure, optimized for intermittent and continuous duty cycles
- Advanced carbon molecular sieve with enhanced selectivity and extended service life under routine maintenance protocols
- Integrated pre-filtration system including coalescing filter, activated carbon trap, and automatic condensate drain—designed to prevent CMS fouling from oil aerosols and moisture
- Robust pneumatic valve manifold with precision-timed solenoid actuation, ensuring reproducible pressure cycling and minimal cross-contamination between adsorption/desorption beds
- Front-panel digital display showing real-time flow rate, outlet pressure, and operational status indicators
- Modular construction enabling field-accessible CMS replacement and component-level servicing without specialized tools
Sample Compatibility & Compliance
The AYAN-95LB is compatible with standard ISO 8573-1 Class 3:4:3 compressed air feed (oil-free, ≤5 µm particulates, dew point ≤3 °C). It meets functional requirements for nitrogen supply in GLP-compliant laboratories and GMP-aligned processes where inert blanketing, oxidation prevention, and controlled-atmosphere storage are mandated. While not certified to ISO 8573-1 for final gas quality, its −40 °C pressure dew point ensures compliance with ASTM D6304 and USP <671> specifications for low-moisture nitrogen used in pharmaceutical packaging and herbal material preservation. The unit supports traceability through manual log entries; optional integration with external data loggers enables alignment with 21 CFR Part 11 audit-trail requirements when paired with validated software platforms.
Software & Data Management
The AYAN-95LB operates via embedded logic control without proprietary software dependency. All operational parameters—including cycle timing, pressure setpoints, and alarm thresholds—are configured via front-panel interface and retained during power loss. For facilities requiring centralized monitoring, analog 4–20 mA outputs are provided for flow and pressure signals, compatible with SCADA, PLC, or LabView-based acquisition systems. Optional OEM-grade oxygen analyzers (e.g., electrochemical or zirconia-based) may be installed downstream for continuous purity verification; calibration intervals follow ISO 17025-recommended practices. Firmware updates are delivered via USB interface and require authorized technician access to maintain system integrity.
Applications
- Herbal medicine preservation: Inert nitrogen overlay in sealed storage containers to inhibit enzymatic browning, microbial growth, and volatile oil degradation
- Food and botanical processing: Blanketing during drying, grinding, and packaging of tea leaves, spices, and nutraceutical powders
- Materials protection: Annealing and brazing atmospheres for stainless steel and titanium components
- Chemical handling: Tank blanketing and line purging in solvent transfer systems and reactor startups
- Electronics manufacturing: Solder paste storage and wave soldering inert zones
- Research laboratories: Carrier gas for GC-TCD, sample preparation under inert conditions, and glovebox replenishment
FAQ
What causes declining nitrogen purity over time?
Gradual purity reduction is most commonly attributable to CMS saturation from inadequate upstream air treatment (e.g., failed coalescing filters or exhausted activated carbon), mechanical wear of pneumatic valves leading to pressure bleed, or operation beyond rated flow capacity.
How often should the carbon molecular sieve be replaced?
Under recommended feed air quality and 8,000 annual operating hours, CMS service life typically ranges from 36 to 48 months. Replacement intervals must be validated by periodic oxygen content testing using a calibrated analyzer.
Can this generator support regulated pharmaceutical environments?
Yes—when integrated with documented preventive maintenance, third-party purity validation, and appropriate upstream air purification, it fulfills technical prerequisites for USP <1117> and Annex 1-aligned nitrogen use in non-sterile compounding and botanical stabilization.
Is remote diagnostics supported?
No native Ethernet or Wi-Fi capability is included; however, analog signal outputs allow integration into existing facility-wide monitoring infrastructure with external data historians.
What maintenance is required to sustain −40 °C dew point performance?
Quarterly inspection of coalescing filters and automatic drains, semi-annual replacement of activated carbon cartridges, and annual verification of desiccant bed integrity in optional post-dryer configurations.
