Anyan AYAN-15LB Membrane-Based Nitrogen Generator
| Brand | Anyan |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Manufacture | China |
| Model | AYAN-15LB |
| Nitrogen Generation Principle | Polymeric Membrane Separation |
| Output Flow Rate | 15 L/min |
| Output Pressure Range | 0–0.4 MPa |
| Nitrogen Purity | 99.9% |
| Dew Point | −40 °C |
| Integrated Air Compressor | Yes |
| Filtration Stages | 3-stage (particulate < 0.01 µm, oil aerosol < 0.003 mg/m³) |
| Real-time Purity Display | Yes |
| Noise Level | ≤62 dB(A) |
| Start-up Time | ≤3 min |
Overview
The Anyan AYAN-15LB is a compact, integrated membrane-based nitrogen generator engineered for continuous, on-demand supply of high-purity nitrogen gas (99.9%) in laboratory and light industrial environments. It employs asymmetric hollow-fiber polymeric membrane technology—sourced from South Korean manufacturing partners—to achieve selective gas separation based on differences in gas solubility and diffusivity within the polymer matrix. Under applied pressure (0–0.4 MPa), compressed air passes through the membrane bundle; oxygen, water vapor, and CO₂ exhibit higher permeation rates due to their smaller kinetic diameter and greater solubility, while nitrogen molecules are retained in the low-permeate stream. This principle enables stable, maintenance-light operation without pressure-swing adsorption (PSA) valves, desiccant beds, or cryogenic components—making it especially suitable for applications requiring rapid start-up (<3 minutes), consistent flow stability, and minimal infrastructure dependency.
Key Features
- South Korea-sourced high-selectivity hollow-fiber membrane modules, delivering long service life (>15,000 operating hours) with no consumable replacement required
- Integrated oil-free scroll air compressor with suspended anti-vibration mounting and acoustic enclosure, achieving ≤62 dB(A) operational noise
- Three-stage pre-filtration system: coalescing filter (0.01 µm particulate retention), activated carbon adsorber (oil vapor removal), and ultra-fine coalescer (≤0.003 mg/m³ oil aerosol carryover)
- Integrated refrigerated dryer and desiccant-assisted dew point control, ensuring consistent −40 °C pressure dew point across full flow range
- Digital purity monitor with electrochemical oxygen sensor (0–1000 ppm O₂ range, ±2% FS accuracy), calibrated traceable to NIST standards
- Dual independent pressure regulation: adjustable feed pressure (for membrane optimization) and outlet pressure (for downstream equipment compatibility)
- Front-panel LED interface with real-time display of output pressure, flow rate, purity, and system status alerts
Sample Compatibility & Compliance
The AYAN-15LB is designed for use with ambient air as feedstock and requires no external utilities beyond standard 220 V / 50 Hz power input. Its output meets ISO 8573-1:2010 Class 2:2:2 specifications for compressed air quality (solid particles, water, oil), and nitrogen purity complies with ASTM D6350-22 requirements for laboratory-grade inert gas. The unit adheres to IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity). While not certified to FDA 21 CFR Part 11 out-of-the-box, its digital logging interface supports integration into validated GxP environments when paired with compliant data acquisition software and audit-trail-enabled configuration.
Software & Data Management
The AYAN-15LB operates as a standalone instrument with embedded firmware (v3.2+), supporting RS-485 Modbus RTU communication for integration into facility SCADA or LIMS platforms. Optional Anyan DataLink™ software (Windows-based) enables time-stamped export of purity, pressure, flow, and temperature logs in CSV format; supports configurable alarm thresholds and email notification via SMTP relay. All logged parameters include UTC timestamps and device serial-number tagging—enabling full traceability per GLP and ISO/IEC 17025 documentation requirements. Firmware updates are performed via secure USB interface with SHA-256 signature verification.
Applications
- Gas chromatography carrier and detector gas (compatible with TCD, FID, ECD, and NPD systems requiring ≥99.9% N₂)
- Inert blanketing for solvent evaporation (rotary evaporators, nitrogen blow-down concentrators), sample storage, and glove box purging
- Food packaging line validation and modified atmosphere packaging (MAP) pilot testing under controlled lab conditions
- Electron microscopy sample preparation (critical-point drying, sputter coating) where ultra-dry, oil-free nitrogen is mandatory
- Calibration gas blending systems requiring stable, low-oxygen background gas
- QC/QA laboratories performing ASTM D3612 (oil-in-transformer analysis) or USP residual solvent testing
FAQ
What is the expected lifetime of the membrane module?
Under nominal operating conditions (ambient temperature 10–35 °C, inlet air dew point ≤−20 °C), the membrane stack is rated for ≥15,000 hours of continuous operation with no performance degradation.
Does the unit require external cooling or ventilation?
No external cooling is required; however, minimum 20 cm clearance around rear exhaust grilles is recommended for thermal management in enclosed cabinets.
Can the output pressure be regulated independently of flow demand?
Yes—the dual-pressure control system allows independent adjustment of feed pressure (to optimize membrane selectivity) and outlet pressure (to match downstream regulator setpoints).
Is the nitrogen purity verified by third-party certification?
Each unit undergoes factory calibration using NIST-traceable gas standards; a Certificate of Conformance (CoC) with test data is provided with shipment.
How does this model compare to PSA-based nitrogen generators in terms of purity stability?
Membrane systems provide inherently stable purity over time and load variation, whereas PSA units may exhibit transient purity dips during cycle switching—making membranes preferable for GC and other precision applications demanding constant composition.
