Anyan AYAN-60L Membrane-Based Nitrogen Generator

Overview

The Anyan AYAN-60L is a compact, integrated membrane-based nitrogen generator engineered for continuous, on-demand production of high-purity nitrogen (99% N₂) from ambient air in laboratory and light industrial environments. Unlike pressure swing adsorption (PSA) systems that rely on carbon molecular sieve (CMS) beds and cyclic valve switching, this unit employs asymmetric polymeric hollow-fiber membranes—sourced from Korean manufacturers—to achieve gas separation based on differential permeability. Oxygen, water vapor, CO₂, and other trace gases exhibit higher diffusion rates and solubility in the membrane polymer matrix than nitrogen; under controlled feed pressure (up to 0.6 MPa), these faster-permeating components are selectively removed through the membrane shell side, while enriched nitrogen is recovered from the bore side. The process requires no consumables beyond periodic filter element replacement, delivers stable output within ≤3 minutes of startup, and eliminates mechanical cycling wear—making it ideal for applications demanding reliability, low maintenance, and quiet operation.

Key Features

• Integrated oil-free scroll air compressor with acoustic suspension mounting, reducing operational noise to <55 dB(A) at 1 m distance.
• Three-stage filtration architecture: (1) pre-coalescing filter (removes >99.9% of liquid water and oil aerosols), (2) refrigerated dryer stage (dew point ≤3°C), and (3) high-efficiency adsorption desiccant separator (final dew point ≤−40°C).
• Real-time digital nitrogen purity display with calibrated electrochemical sensor, enabling continuous verification of 99% N₂ output against ISO 8573-1 Class 2:2:2 air quality standards.
• Dual independent pressure regulation system: one for feed air compression control, another for nitrogen delivery pressure fine-tuning (0–0.6 MPa range), ensuring compatibility with GC, LC-MS, and inert atmosphere gloveboxes.
• Modular filter cartridge design with visual service indicators, supporting field-replacement without tools or system shutdown.
• Front-panel LED status interface with fault diagnostics (e.g., filter saturation, pressure deviation, membrane temperature anomaly).

Sample Compatibility & Compliance

The AYAN-60L is designed for use with ambient air as the sole feedstock—no external compressed air source required. Its output meets ASTM D6352-20 specifications for nitrogen used in chromatographic carrier gas applications and complies with ISO 8573-1:2010 Class 2 for solid particle content (<0.01 µm), Class 2 for water content (dew point ≤−40°C), and Class 2 for total oil content (≤0.003 mg/m³). While not certified to FDA 21 CFR Part 11 out-of-the-box, its digital purity logging function supports GLP/GMP-aligned data integrity when paired with validated third-party software for audit trail generation. The unit carries CE marking per Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU.

Software & Data Management

The AYAN-60L operates as a standalone hardware platform with embedded firmware—no proprietary PC software is required for basic operation. However, optional RS-485 Modbus RTU or analog 4–20 mA outputs enable integration into centralized lab infrastructure monitoring systems (e.g., LabVantage, Thermo Fisher SampleManager). Purity and pressure values can be logged externally at 1 Hz resolution. For regulated environments, users may configure external SCADA systems to capture timestamped events—including filter change alerts, pressure excursions, and purity drift exceeding ±0.5%—to satisfy ALCOA+ (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) data governance requirements.

Applications

• Gas chromatography (GC) carrier and detector purge gas supply.
• LC-MS nitrogen nebulizer and drying gas for electrospray ionization sources.
• Inert blanketing of solvent storage tanks, reaction vessels, and sample preparation workstations.
• Nitrogen purging in semiconductor packaging, optical coating chambers, and moisture-sensitive material handling.
• Supporting ASTM E260, USP , and ISO 17025-compliant analytical workflows where consistent, documented nitrogen quality is mandatory.

FAQ

What is the expected service life of the membrane module?
Under nominal operating conditions (ambient temperature 15–30°C, relative humidity <60%, feed air meeting ISO 8573-1 Class 4), the hollow-fiber membrane assembly is rated for ≥15,000 hours of continuous operation before requiring recalibration or replacement.
Does the unit require external cooling or ventilation?
Yes—adequate ambient airflow around the rear heat exchanger and compressor housing is required; minimum clearance of 15 cm on all sides is recommended to maintain internal operating temperature below 45°C.
Can output purity be adjusted to levels above 99%?
No—the 99% purity rating reflects optimal balance between flow rate, pressure drop, and long-term membrane stability; higher purity would necessitate reduced flow or cascaded membrane stages, which are not supported by this model.
Is routine calibration of the purity sensor required?
Yes—electrochemical oxygen sensors should be verified annually using certified 21% O₂ / 79% N₂ reference gas; full recalibration is recommended every 24 months or after filter replacement cycles exceeding 12 months.
What maintenance intervals apply to the three-stage filtration system?
Pre-filter cartridges: replace every 6 months or after 4,000 operating hours; refrigerated dryer desiccant: regenerate every 12 months; final adsorption separator: replace every 24 months or per moisture breakthrough test results.