AYAN AYAN-60LG Membrane-Based Nitrogen Generator

Overview

The AYAN AYAN-60LG is a compact, self-contained membrane-based nitrogen generator engineered for continuous, on-demand supply of high-purity nitrogen gas in laboratory and light industrial environments. Unlike pressure swing adsorption (PSA) systems that rely on carbon molecular sieve (CMS) beds and cyclic valve sequencing, the AYAN-60LG utilizes hollow-fiber polymeric membranes to separate nitrogen from compressed ambient air based on differential permeation rates of oxygen, water vapor, and nitrogen molecules. Oxygen and moisture—being smaller and more condensable—exhibit higher permeability through the membrane wall, while nitrogen (N₂), with its lower diffusion coefficient and larger kinetic diameter, preferentially remains in the non-permeate stream. This physical separation mechanism enables stable, maintenance-free operation without consumable adsorbents or regeneration cycles, delivering consistent 99.9% N₂ purity at up to 60 L/min under regulated backpressure.

Key Features

• Integrated oil-free air compressor with vibration-dampened mounting and acoustic enclosure—reducing operational noise to ≤62 dB(A) at 1 m distance.
• Three-stage filtration system: pre-filter (3 µm particulate), coalescing filter (0.01 µm, ≤0.003 mg/m³ oil aerosol), and activated carbon polishing stage—ensuring feed air quality compliant with ISO 8573-1 Class 2:2:2.
• Dual-pressure regulation: independent control of feed air pressure (for optimal membrane flux) and output nitrogen pressure (0–0.6 MPa adjustable), enabling compatibility with GC carrier gas, glovebox purging, and inert blanketing applications.
• Real-time nitrogen purity monitoring via built-in electrochemical sensor with digital display (±0.1% accuracy, calibrated traceable to NIST standards).
• Automatic dew point suppression: integrated refrigerated dryer and desiccant post-treatment achieve –45 °C pressure dew point (PDP), meeting ASTM D7615 and ISO 8573-3 requirements for critical analytical use.
• Modular chassis design with front-access service panels, standardized pneumatic quick-connectors, and CE-marked electrical architecture (IEC 61000-6-3/6-4, EN 61000-3-2).

Sample Compatibility & Compliance

The AYAN-60LG is validated for continuous operation with ambient intake air meeting ISO 8573-1 Class 4:4:4 (≤7 µm particles, ≤100% RH, ≤1 mg/m³ total oil). It complies with key regulatory frameworks governing lab gas supply integrity, including FDA 21 CFR Part 11 (when paired with optional audit-trail-enabled software), EU GMP Annex 1 (for Grade B/C cleanroom support), and GLP-compliant documentation packages (IQ/OQ protocols available upon request). The nitrogen output meets USP <841> and EP 2.5.27 specifications for “Nitrogen for Pharmaceutical Use” when operated within specified environmental and maintenance intervals.

Software & Data Management

While the base AYAN-60LG operates via analog controls and local digital display, optional RS-485 Modbus RTU or Ethernet TCP/IP interface enables integration into centralized lab infrastructure management systems (LIMS, SCADA). Firmware supports configurable alarm thresholds (low purity, high dew point, overpressure), event logging (≥10,000 entries with timestamp), and remote diagnostics via secure TLS 1.2 connection. All data logs are exportable in CSV format and support traceability per ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).

Applications

• Gas chromatography (GC) carrier and detector gases—validated for use with FID, TCD, ECD, and NPD detectors per ASTM D3612 and ISO 10101-2.
• Inert atmosphere generation for gloveboxes, solvent evaporation stations, and electrochemical cell assembly.
• Blanketing of sensitive reagents (e.g., organometallics, lithium battery electrolytes) during synthesis and storage.
• LC-MS mobile phase sparging and instrument purge gas in pharmaceutical QC labs.
• Calibration gas dilution systems requiring stable, low-moisture N₂ background streams.

FAQ

What is the expected service life of the membrane module?
Under continuous operation at rated flow and inlet air quality ≤Class 4:4:4, the hollow-fiber membrane stack maintains ≥99.9% purity for ≥15,000 operating hours (≈1.7 years @ 24/7), with no scheduled replacement required prior to performance verification testing.
Does the unit require external cooling or ventilation?
Yes—ambient air intake must be unobstructed, and exhaust heat dissipation (3800 W thermal load) necessitates ≥200 cm² free-area ventilation above the unit; installation in enclosed cabinets requires forced-air extraction per IEC 60034-6.
Can this generator supply nitrogen to multiple instruments simultaneously?
Yes—provided total downstream demand does not exceed 60 L/min at ≤0.6 MPa and piping complies with ISO 8573-1 Class 2:2:2 integrity standards (stainless steel 316L, electropolished, leak-tested to ≤1×10⁻⁶ mbar·L/s).
Is validation documentation included?
Factory acceptance test (FAT) report, calibration certificate for purity/dew point sensors, and electrical safety compliance summary are standard. IQ/OQ protocols and 3Q validation support kits are available as add-on services.
What maintenance intervals are recommended?
Pre-filter replacement every 500 hours; coalescing filter and activated carbon stage every 2,000 hours; full system integrity check (including membrane pressure drop and purity drift verification) every 6 months or 4,000 operating hours—whichever occurs first.