Anyan AYAN-15LG Membrane-Based High-Purity Nitrogen Generator
| Brand | Anyan |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | AYAN-15LG |
| Output Flow Rate | 15 L/min |
| Output Pressure Range | 0–0.4 MPa |
| Nitrogen Purity | 99.9% |
| Dew Point | −40 °C |
| Separation Principle | Polymeric Membrane Gas Separation |
Overview
The Anyan AYAN-15LG is a compact, integrated membrane-based nitrogen generator engineered for continuous on-site production of high-purity nitrogen (99.9%) from ambient air. It employs asymmetric polymeric hollow-fiber membranes—sourced from Korea—to achieve selective gas separation based on differences in gas solubility and diffusivity. Under controlled feed pressure, oxygen, water vapor, and CO₂ permeate through the membrane wall at higher rates than nitrogen, resulting in a nitrogen-enriched retentate stream. This principle—governed by solution-diffusion kinetics—enables rapid start-up (≤3 minutes), zero moving parts in the separation stage, and stable output without pressure-swing adsorption (PSA) cycling or valve switching. Designed for laboratory and light industrial environments, the AYAN-15LG integrates an oil-free scroll compressor, multi-stage filtration, and precision pressure regulation into a single footprint, eliminating dependency on liquid nitrogen dewars or external compressed air sources.
Key Features
- Korean-sourced high-selectivity hollow-fiber membrane modules with proven longevity and no consumable replacement requirements
- Integrated oil-free scroll compressor with suspended acoustic isolation housing, achieving ≤58 dB(A) operational noise
- Three-stage inline filtration system: particulate removal (<0.01 µm), coalescing water/oil separation (≤0.003 mg/m³), and activated carbon polishing for trace hydrocarbon abatement
- Digital nitrogen purity monitor with real-time display (0–100% N₂), calibrated against electrochemical sensor reference
- Dual independent pressure control: adjustable feed pressure (0.6–0.8 MPa) and regulated output pressure (0–0.4 MPa), both accessible via front-panel rotary dials
- Internal dew point control via integrated refrigerated dryer and desiccant-assisted post-drying, delivering consistent −40 °C pressure dew point (PDP)
Sample Compatibility & Compliance
The AYAN-15LG is compatible with analytical instruments requiring inert carrier or purge gas—including GC, LC-MS, ICP-MS, and thermal desorption units—as well as packaging applications in food, pharmaceutical, and electronics manufacturing where oxygen exclusion is critical. Its output meets ISO 8573-1:2010 Class 2:2:2 for solid particles, water, and oil content, and complies with FDA 21 CFR Part 11 data integrity requirements when paired with optional audit-trail-enabled software. While not certified to ISO 8573-8 for microbiological purity, it satisfies GLP/GMP-aligned environmental monitoring protocols when operated with documented preventive maintenance logs and inlet air quality verification (e.g., ISO 8573-1 Class 4 feed air). The unit carries CE marking per Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU.
Software & Data Management
The AYAN-15LG operates as a standalone hardware platform with analog and digital I/O interfaces (4–20 mA output for purity/pressure signals; RS-485 Modbus RTU port). Optional Anyan ControlSuite™ software (v3.2+) enables remote monitoring, event logging, and alarm history export in CSV format. All logged parameters—including runtime hours, compressor cycles, purity deviation alerts, and pressure transients—are time-stamped and stored with user-accessible audit trails compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). Data encryption (AES-128) and role-based access control support integration into enterprise LIMS or MES systems under GxP-regulated workflows.
Applications
- Gas chromatography carrier gas supply for routine QC analysis in food safety labs (e.g., pesticide residue testing per AOAC 2012.01)
- Inert blanketing during lyophilization, solvent evaporation, and reagent synthesis in pharmaceutical R&D
- Modified atmosphere packaging (MAP) for bakery, dairy, and snack products requiring O₂ < 0.1% headspace
- Calibration gas generation for oxygen analyzers and residual gas analyzers (RGAs) in vacuum chamber qualification
- Instrument purge for FTIR spectrometers and XRF sample chambers to minimize atmospheric CO₂/H₂O interference
FAQ
What is the recommended inlet air quality for optimal membrane performance?
Feed air must meet ISO 8573-1 Class 4 (≤0.1 µm particles, ≤3 mg/m³ oil, ≤−20 °C pressure dew point) to prevent membrane fouling. Use of the built-in three-stage filter ensures compliance when ambient intake is filtered and dry.
Can output flow be reduced below 15 L/min without affecting purity?
Yes—flow is throttled via the outlet pressure regulator; purity remains stable at ≥99.9% across 3–15 L/min at 0.4 MPa backpressure.
Is the −40 °C dew point measured at atmospheric or system pressure?
It is specified as pressure dew point (PDP) at maximum output pressure (0.4 MPa), equivalent to ~−65 °C atmospheric dew point (ADP).
Does the unit require annual recalibration of the purity sensor?
Electrochemical sensors are factory-calibrated; field verification using traceable N₂/O₂ standard gas (e.g., Air Liquide N₂ 99.90 ±0.05%) is recommended every 12 months or after 2,000 operating hours.
How does ambient temperature affect performance?
Operation is rated for 5–35 °C ambient. Below 10 °C, dew point may rise transiently; above 30 °C, compressor duty cycle increases—derating to 12 L/min advised for continuous operation >8 hrs/day.
