Anyan AYAN-30LB PSA Nitrogen Generator for Laboratory Use

Overview

The Anyan AYAN-30LB PSA Nitrogen Generator is an engineered laboratory-grade gas generation system designed for continuous, on-demand production of high-purity nitrogen from ambient air. It operates on the well-established principle of Pressure Swing Adsorption (PSA), leveraging the kinetic selectivity of carbon molecular sieve (CMS) to separate nitrogen from oxygen and other trace atmospheric components. Unlike membrane-based or cryogenic systems, PSA technology provides stable output with precise control over purity and flow—critical for applications requiring reproducible inert atmospheres, carrier gas supply, or blanketing in analytical and process environments. The unit integrates a multi-stage air pretreatment train—including coalescing filtration, refrigerated drying, and fine particulate/oil removal—to ensure CMS longevity and consistent separation performance. Its modular architecture supports integration into existing lab infrastructure, with factory calibration and pre-configured pressure regulation (0.5 MPa default) enabling rapid deployment without external compressors or auxiliary dryers.

Key Features

• Robust PSA core with dual-bed CMS adsorption towers operating in alternating adsorption/desorption cycles for uninterrupted nitrogen delivery
• Integrated air preparation system: three-stage filtration (pre-filter, coalescing filter, activated carbon + desiccant), plus refrigerated dryer (−20 °C pressure dew point pre-CMS)
• Digital nitrogen purity monitoring via built-in electrochemical O₂ sensor (range 0–1% O₂, resolution 0.001%) with real-time display and automatic purge logic
• Adjustable output pressure (0–0.6 MPa) and flow (0–30 L/min) via precision needle valve and mass flow controller (MFC)-based feedback loop
• Industrial-grade solenoid valves and stainless-steel pneumatic piping to minimize leakage and extend service intervals
• Front-panel HMI with LED status indicators, alarm logging, and configurable setpoints for purity, pressure, and flow thresholds
• Compliance-ready design: CE-marked electrical components; meets IEC 61000-6-2/6-4 immunity/emission standards

Sample Compatibility & Compliance

The AYAN-30LB is compatible with standard laboratory gas interfaces (¼″ NPT or BSPP) and delivers nitrogen suitable for GC carrier gas (per ASTM D6299 and ISO 8573-1 Class 2:2:2 for particles, water, and oil), glove box purging, LC-MS mobile phase sparging, and inerting of sensitive reagents. While not certified to FDA 21 CFR Part 11 out-of-the-box, its data logging capability (via optional RS485/Modbus RTU interface) supports audit-trail implementation under GLP/GMP frameworks when integrated with validated LIMS or SCADA systems. All CMS cartridges are replaceable per manufacturer’s maintenance schedule (typically 20,000–30,000 hours depending on inlet air quality), and replacement kits include batch-certified CMS with BET surface area ≥900 m²/g and pore size distribution centered at 0.3 nm—optimized for O₂/N₂ kinetic diameter discrimination (O₂ kinetic diameter: 0.346 nm; N₂: 0.364 nm).

Software & Data Management

The generator includes embedded firmware supporting local parameter configuration and event logging (e.g., low-purity alarms, filter clogging warnings, CMS saturation alerts). Optional Ethernet or USB-to-serial adapters enable connection to Windows/Linux host systems for remote monitoring via ASCII command protocol (AT-style). Raw sensor outputs—including O₂ concentration, outlet pressure, flow rate, and cabinet temperature—are timestamped and exportable as CSV. For regulated environments, third-party software platforms (e.g., LabVIEW, Ignition SCADA) can poll device registers to enforce electronic record retention, user access controls, and change management—aligning with ALCOA+ principles for data integrity.

Applications

• Gas chromatography (GC) and GC-MS carrier and detector gases, meeting USP and EP 2.5.27 specifications for compressed gases
• Inert atmosphere maintenance in synthesis reactors, Schlenk lines, and battery material processing
• Blanketing of pharmaceutical stability chambers and lyophilization condensers
• Calibration gas dilution systems requiring stable, low-oxygen background gas
• Electron microscopy sample preparation where hydrocarbon-free, dry nitrogen is required
• Quality control labs performing ASTM E260, ISO 10156, or EN 50581-compliant flammability testing

FAQ

What is the expected lifetime of the carbon molecular sieve under typical lab conditions?
CMS lifespan is highly dependent on inlet air quality. With properly maintained pretreatment (especially oil removal and dew point control), CMS typically performs reliably for 20,000–30,000 operational hours before requiring replacement.
Can this unit produce nitrogen at 99.99% purity?
Yes—purity is selectable at order entry. Higher purities (99.9%, 99.99%, up to 99.9999%) require extended residence time, larger CMS beds, and modified cycle timing; these configurations are available as custom builds with adjusted flow-pressure trade-offs.
Is external compressed air required?
No—the AYAN-30LB includes an integrated oil-free scroll air compressor rated for continuous duty; no external air source is needed.
How often do filters and dryers require servicing?
Pre-filters should be inspected monthly and replaced every 3–6 months; refrigerant dryer desiccant requires regeneration or replacement annually, depending on ambient humidity and usage frequency.
Does the unit support 21 CFR Part 11 compliance?
The base model does not include electronic signature or audit trail features, but its Modbus interface enables integration with validated third-party software that implements Part 11 controls.