ANYAN AYAN-60L PSA Nitrogen Generator with Carbon Molecular Sieve

Overview

The ANYAN AYAN-60L PSA Nitrogen Generator is an on-site, continuous-duty nitrogen supply system engineered for laboratories and industrial process applications requiring reliable, high-purity nitrogen gas without reliance on liquid nitrogen dewars or high-pressure cylinders. It employs pressure swing adsorption (PSA) technology—utilizing carbon molecular sieve (CMS) as the selective adsorbent—to separate nitrogen from ambient air. Under elevated pressure, oxygen, moisture, CO₂, and trace hydrocarbons are preferentially adsorbed onto the CMS surface, while nitrogen passes through with minimal retention. During the depressurization phase, the adsorbed gases are vented, regenerating the CMS bed for the next cycle. This dual-tower, alternating-cycle architecture ensures uninterrupted nitrogen delivery at stable flow and purity. The system is designed to accept instrument-grade compressed air (ISO 8573-1 Class 2:2:2 compliant) as feedstock—typically supplied by an external oil-free screw compressor—and delivers nitrogen meeting common analytical and process specifications for GC carrier gas, inert blanketing, and controlled-atmosphere thermal processing.

Key Features

• Stable 60 L/min nitrogen output at ≥99% purity (O₂ ≤ 1% v/v), with optional upgrade paths to 99.9% and 99.99% via integrated purification modules
• Integrated real-time monitoring suite: electrochemical oxygen analyzer, thermal mass flow meter, digital pressure transducers, and dew point sensor (−40 °C)
• PLC-based control cabinet with intuitive HMI interface supporting automated start-up, fault diagnostics, alarm logging, and remote status reporting
• Food-grade 304 stainless steel construction throughout wetted pathways—including CMS adsorption towers, piping, valves, and buffer vessels—ensuring corrosion resistance and compliance with FDA-relevant material standards
• Modular skid-mounted design with reinforced base frame for floor-level stability and vibration damping; compatible with integration into existing utility platforms or mobile trailer systems
• Low-noise operation (≤65 dB[A]) and energy-efficient architecture (max. 600 W), optimized for continuous 24/7 operation in shared laboratory or production-floor environments
• Comprehensive safety provisions: automatic vent-and-purge sequence upon purity deviation, pressure relief valves, redundant pressure switches, and emergency shutdown logic

Sample Compatibility & Compliance

The AYAN-60L is not a sample analysis device but a utility gas generation system—its compatibility is defined by inlet air quality and downstream application requirements. It requires clean, dry, oil-free compressed air feed meeting ISO 8573-1 Class 2:2:2 (solid particles ≤ 0.1 µm, dew point ≤ −40 °C, oil content ≤ 0.01 mg/m³). The generator itself conforms to CE electromagnetic compatibility (EMC) directives and meets IP54 enclosure rating for dust and water ingress protection. While not certified to UL/CSA for hazardous locations, its design supports integration into GMP/GLP-aligned facilities when paired with validated compressed air treatment trains. Optional audit-trail-capable data logging (with time-stamped purity, flow, and pressure records) facilitates alignment with FDA 21 CFR Part 11 expectations for electronic records in regulated pharmaceutical and biotech settings.

Software & Data Management

The embedded PLC controller supports local HMI operation with configurable setpoints, trend visualization (72-hour rolling history), and event-driven alarms (e.g., low purity, high dew point, filter saturation). All operational parameters—including O₂ concentration, N₂ flow rate, outlet pressure, CMS tower cycle status, and runtime hours—are logged internally with timestamping. Data export is supported via USB port (CSV format) for offline QA review. For enterprise integration, optional Modbus RTU or TCP/IP communication enables connection to SCADA or MES platforms. No cloud dependency or proprietary subscription software is required; firmware updates are performed locally via secure USB interface. Audit trail functionality—including user login history, parameter change logs, and alarm acknowledgment records—is available in enhanced configuration packages for regulated environments.

Applications

• Gas Chromatography: Serves as carrier and detector gas source for GC-FID, GC-TCD, and GC-ECD systems where consistent 99% nitrogen purity satisfies method requirements per ASTM D3612 and USP
• Thermal Processing: Supplies inert atmosphere for metal heat treatment (annealing, brazing, sintering), especially in vacuum furnace backfilling and bright annealing of stainless steel and copper alloys
• Electronics Manufacturing: Supports solder reflow ovens, component aging chambers, and LED/LCD panel purge lines where oxygen exclusion prevents oxidation during high-temperature processing
• Pharmaceutical Packaging: Enables nitrogen flushing of blister packs, vials, and IV bags to extend shelf life and inhibit microbial growth in accordance with ICH Q5C stability guidelines
• Food & Beverage Preservation: Facilitates modified atmosphere packaging (MAP) for snacks, coffee, dairy, and fresh-cut produce, complying with EU Regulation (EC) No 1333/2008 on food additives
• Chemical Synthesis & Catalyst Handling: Provides inert blanket gas for solvent storage tanks, reactor purging prior to exothermic reactions, and glovebox replenishment in R&D labs

FAQ

What compressed air quality is required for optimal performance?
Instrument-grade air meeting ISO 8573-1 Class 2:2:2 is mandatory: particle size ≤ 0.1 µm, dew point ≤ −40 °C, total oil content ≤ 0.01 mg/m³. Failure to meet this specification accelerates CMS degradation and compromises long-term purity stability.
Can the AYAN-60L be integrated with an existing compressed air network?
Yes—provided the network delivers stable pressure (6–8 bar(g)), sufficient flow capacity (>120 L/min), and has been validated for particulate, moisture, and oil removal upstream of the generator inlet.
Is on-site calibration of the oxygen analyzer included?
The electrochemical O₂ sensor is factory-calibrated and includes a zero-check function. Field recalibration using certified 0% and 21% O₂ span gases is recommended every 6 months or after filter replacement.
What maintenance intervals apply to consumables?
Pre-filters require replacement every 3–6 months depending on ambient air quality; coalescing filters every 12 months; CMS beds typically last 3–5 years under proper feed-air conditions. A full maintenance log template is provided in the operations manual.
Does the system support regulatory audit readiness?
With optional data-logging firmware enabled, it generates time-stamped, tamper-evident records of all critical process variables—supporting internal audits and facilitating inspection readiness for ISO 17025, GMP, or GLP compliance assessments.