ANYAN AYAN-80LB High-Flow Industrial PSA Nitrogen Generator

Overview

The ANYAN AYAN-80LB is a high-capacity, dual-tower Pressure Swing Adsorption (PSA) nitrogen generator engineered for continuous, on-site nitrogen production in industrial and pilot-scale laboratory environments. It operates on the fundamental principle of selective adsorption—utilizing carbon molecular sieve (CMS) media to preferentially adsorb oxygen, moisture, and trace contaminants from compressed air under elevated pressure, while allowing nitrogen molecules to pass through with minimal resistance. During the adsorption phase, clean compressed air enters one CMS-filled tower, where O₂, CO₂, and H₂O are retained; nitrogen-rich gas exits and is stored in a dedicated buffer tank. Simultaneously, the second tower undergoes regeneration via depressurization and purging, restoring CMS adsorption capacity. The system alternates between towers automatically, ensuring uninterrupted nitrogen supply. This cyclic, pressure-modulated process delivers stable output across a wide purity range (99.0% to 99.999% N₂), with dew point control down to –40 °C, meeting stringent requirements for inerting, blanketing, and analytical applications.

Key Features

• Integrated turnkey design: Includes oil-lubricated or oil-free air compressor, refrigerated dryer, coalescing and activated carbon filtration stages, dual CMS adsorption towers, nitrogen buffer tank, and final particulate filter—eliminating the need for external ancillary equipment.
• Real-time process monitoring: Built-in electrochemical or thermal conductivity-based nitrogen purity analyzer and digital mass flow meter provide continuous readouts of N₂ concentration (%v/v) and volumetric flow rate (Nm³/h), with configurable alarm thresholds.
• Robust mechanical architecture: Heavy-duty steel frame with load-rated casters and locking brakes enables secure placement and repositioning within production or lab facilities without structural reinforcement.
• Advanced air pretreatment: Dedicated micro-oil adsorber using high-efficiency PSA-grade activated carbon removes residual hydrocarbons (< 0.01 mg/m³) from compressed air, extending CMS service life and maintaining long-term purity stability.
• Dynamic pressure management: Air receiver tank stabilizes inlet pressure fluctuations; nitrogen buffer tank dampens output pulsation and equalizes purity/pressure transients—critical for GC carrier gas and laser cutting applications.
• Optimized CMS selection: Compatible with multiple internationally certified carbon molecular sieve grades (e.g., Taiyo, JSC “Spectra”, or Calgon CMS-120); selection guided by target purity, flow demand, and duty cycle to maximize energy efficiency and adsorbent longevity.

Sample Compatibility & Compliance

The AYAN-80LB is compatible with ambient air feedstock meeting ISO 8573-1:2010 Class 2:2:2 specifications (solid particles ≤ 0.1 µm, water content ≤ 0.1 mg/m³, oil content ≤ 0.1 mg/m³). Its modular filtration train ensures compliance with USP and ASTM D6350 for instrument-grade nitrogen used in chromatography, elemental analysis, and semiconductor processing. While not inherently 21 CFR Part 11 compliant, the unit supports integration with third-party SCADA or LIMS systems via 4–20 mA analog outputs and Modbus RTU communication for audit-ready data logging. All pressure vessels conform to PED 2014/68/EU and ASME Section VIII Div. 1 standards; electrical components meet CE/EMC Directive 2014/30/EU.

Software & Data Management

The generator features an embedded PLC-based controller with a 7-inch color HMI touchscreen interface. Firmware supports event logging (start/stop cycles, tower switching, purity excursions, maintenance alerts) with timestamped records exportable via USB. Optional Ethernet/Wi-Fi module enables remote monitoring through web browser or MQTT protocol—facilitating predictive maintenance scheduling and integration into Industry 4.0 infrastructure. Data export formats include CSV and XML, compatible with common laboratory informatics platforms. No proprietary software installation is required for basic operation or diagnostics.

Applications

• Gas chromatography (GC) carrier and detector gases, especially for FID, TCD, and ECD systems requiring ≥99.995% N₂ at 0.3–0.6 MPa.
• Inert atmosphere creation in gloveboxes, reactors, and packaging lines for pharmaceutical, battery, and food manufacturing.
• Laser cutting and welding assist gas where stable pressure and low dew point prevent lens contamination and oxidation.
• Blanketing of flammable solvents during storage, transfer, and synthesis to mitigate fire/explosion risk per NFPA 56 and OSHA 1910.106.
• Calibration gas standard preparation and reference material handling in metrology labs adhering to ISO/IEC 17025.
• Pilot-scale catalytic testing and materials synthesis requiring repeatable, high-purity nitrogen dosing over extended durations.

FAQ

What is the typical service life of the carbon molecular sieve in the AYAN-80LB?
Under proper pretreatment and operating conditions (inlet air dew point ≤ –20 °C, oil content < 0.01 mg/m³), CMS life exceeds 8–10 years with routine regeneration cycles.
Can this unit be configured for 99.999% nitrogen purity at full rated flow?
Yes—however, achieving ultra-high purity at maximum flow requires optimized tower sizing and CMS grade selection; consult engineering support for application-specific configuration.
Does the system include automatic shutdown on purity deviation?
Yes—the onboard analyzer triggers audible/visual alarms and can initiate controlled venting or system halt via programmable logic outputs.
Is on-site commissioning and validation support available?
ANYAN provides FAT/SAT documentation and optional IQ/OQ protocols aligned with GMP Annex 15; field service engineers support installation, leak testing, and performance qualification.
How does ambient temperature affect nitrogen output stability?
Refrigerated dryer performance degrades above 35 °C ambient; for sustained operation >38 °C, optional high-ambient cooling kits or air-cooled dryers are recommended.