Anyan AYAN-15L Membrane-Based Nitrogen Generator

Overview

The Anyan AYAN-15L Membrane-Based Nitrogen Generator is an engineered solution for continuous on-site nitrogen supply in laboratory and light industrial environments. It employs hollow-fiber membrane separation technology—distinct from pressure swing adsorption (PSA)—to separate nitrogen from ambient compressed air. In this process, compressed air passes through a bundle of selectively permeable polymeric membranes; oxygen, water vapor, carbon dioxide, and other trace gases diffuse preferentially through the membrane wall, while nitrogen—being less permeable—remains concentrated in the core stream. The resulting nitrogen gas meets ISO 8573-1 Class 3 air quality requirements when supplied with properly dried and filtered feed air, and delivers consistent 99% purity at up to 15 L/min and 0.6 MPa output pressure. Designed for integration with analytical instrumentation—including LC-MS, GC, FTIR, and inert atmosphere glove boxes—the AYAN-15L eliminates reliance on high-pressure cylinders and associated logistical, safety, and regulatory burdens.

Key Features

• Stable 99% nitrogen purity across full flow range (0–15 L/min), verified per ISO 8573-1 methodology using calibrated thermal conductivity analyzers
• Hollow-fiber membrane module with integrated thermal management to maintain consistent separation efficiency under variable ambient conditions
• Three-stage pre-filtration system: coalescing filter (0.01 µm), activated carbon adsorber (for hydrocarbon and odor removal), and desiccant dryer (achieving −45 °C dew point)
• Integrated pressure regulation and digital flow control with real-time monitoring via front-panel LED display
• Low-maintenance architecture: no consumable molecular sieves or periodic regeneration cycles required—unlike PSA systems
• 220 V / 50 Hz single-phase input with 2000 W rated power draw; includes overpressure relief valve and automatic shutdown on thermal overload

Sample Compatibility & Compliance

The AYAN-15L is intended for use with clean, oil-free, and desiccated compressed air sources meeting ISO 8573-1:2010 Class 1.4.1 specifications (solid particles ≤ 0.1 µm, pressure dew point ≤ −40 °C, oil content ≤ 0.01 mg/m³). While not certified to FDA 21 CFR Part 11 or GMP Annex 1 for pharmaceutical-grade nitrogen, its output is suitable for non-sterile laboratory applications including sample preparation, blank purging, carrier gas supply for chromatographic systems, and inerting of sensitive reagents. The unit complies with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity) standards. Its mechanical construction adheres to IP20 enclosure rating for indoor laboratory use.

Software & Data Management

The AYAN-15L operates as a standalone hardware system without embedded firmware-based data logging or network connectivity. All operational parameters—including output pressure, instantaneous flow rate, and runtime hours—are displayed locally via a dual-digit LED interface. For laboratories requiring audit-trail capability or integration into centralized facility monitoring systems, analog 4–20 mA output signals (optional upon request) can be configured for pressure and flow telemetry. No proprietary software is required; however, third-party SCADA or LabVantage-compatible protocols may interface via standard 0–10 V analog inputs when paired with external signal conditioning modules.

Applications

• Carrier and purge gas for gas chromatography (GC) and gas chromatography–mass spectrometry (GC-MS) systems
• Blank and calibration gas supply in environmental and clinical testing laboratories
• Inert atmosphere maintenance during synthesis, storage, or packaging of oxidation-sensitive compounds
• Sample evaporation and concentration in nitrogen blow-down concentrators (e.g., TurboVap®, Reacti-Vap®)
• Instrument purge for Fourier-transform infrared (FTIR) spectrometers and Raman systems requiring moisture-free optical paths
• Support gas for electron microscopy sample preparation and plasma cleaning tools

FAQ

What feed air quality is required for optimal performance?
Compressed air must be oil-free, particle-filtered to ≤ 0.01 µm, and dried to a pressure dew point ≤ −40 °C prior to entering the generator. Failure to meet these conditions accelerates membrane fouling and reduces nitrogen purity.
Can the AYAN-15L produce nitrogen at purities higher than 99%?
No—membrane-based separation inherently limits maximum purity to ~99.5% under ideal conditions. For 99.9% or higher purity, a PSA-based generator or cryogenic system is required.
Is routine maintenance required beyond filter replacement?
Yes: coalescing and activated carbon filters should be replaced every 6 months under continuous operation; desiccant media every 12 months. Membrane lifetime exceeds 15,000 operating hours with proper upstream air treatment.
Does the unit include internal air compression?
No—the AYAN-15L is a nitrogen generator only and requires an external oil-free air compressor delivering 100–150 L/min at 0.7–1.0 MPa.
How is leak detection performed during commissioning?
Use a certified helium leak detector or soap-solution test at all pneumatic joints, especially at the inlet air coupling, membrane housing flange, and outlet pressure regulator. A sustained pressure drop >0.02 MPa/h at 0.6 MPa indicates a system-level leak.