AYAN-30L High-Purity Nitrogen Generator for Aquaculture & Laboratory Use

Overview

The AYAN-30L High-Purity Nitrogen Generator is an engineered solution for continuous on-site nitrogen supply in laboratory, aquaculture, and industrial process environments. It employs pressure swing adsorption (PSA) technology—a well-established, energy-efficient gas separation method—to extract high-purity nitrogen from ambient air. At its core, the system utilizes premium-grade carbon molecular sieve (CMS) as the selective adsorbent. Under controlled pressure cycles, oxygen molecules—smaller in kinetic diameter (≈0.346 nm)—diffuse more rapidly into CMS micropores, while nitrogen molecules (kinetic diameter ≈0.364 nm) exhibit slower diffusion and remain preferentially in the gas phase. This differential adsorption kinetics enables reliable, continuous separation without cryogenic cooling or chemical reagents. Designed for 24/7 operation, the AYAN-30L delivers stable output at 30 L/min with guaranteed purity of 99.999% (≤1 ppm O₂), a dew point of −40 °C (ISO 8573-1 Class 2.2.1), and adjustable delivery pressure up to 0.6 MPa—meeting stringent requirements for inerting, blanketing, and analytical instrumentation support.

Key Features

• Integrated oil-free air compressor with suspended acoustic isolation housing—operates below 62 dB(A) at 1 m distance.
• Dual-stage air pre-treatment: coalescing filter + desiccant-based water separator—ensures CMS protection against moisture and particulate contamination.
• Real-time digital display of nitrogen purity (%N₂), flow rate (L/min), outlet pressure (MPa), and system status diagnostics.
• Programmable dual-pressure regulation: independent control of adsorption tower inlet pressure and final delivery pressure for optimized CMS utilization.
• Modular PSA architecture with twin adsorption towers—enables uninterrupted nitrogen production during cyclic regeneration (adsorption → depressurization → purge → repressurization).
• Onboard stainless-steel buffer tank (≥12 L) with ASME-certified safety relief valve (set at 0.8 MPa) and pressure stabilization circuitry.
• Intelligent self-diagnostic firmware with event logging, fault code reporting, and service interval alerts per CMS saturation cycle count.
• Mobile floor-standing configuration with industrial-grade casters and leveling feet—designed for flexible placement in labs, hatcheries, or QC rooms.
• Full automation via embedded PLC controller; no manual valve sequencing or operator intervention required during normal operation.

Sample Compatibility & Compliance

The AYAN-30L is compatible with all standard nitrogen-dependent laboratory instruments—including GC carrier gas modules, LC-MS nitrogen curtain gas inlets, FTIR purge lines, and cell culture incubator inerting systems. Its consistent 99.999% purity meets ASTM D6867 (for trace oxygen analysis), ISO 8573-1:2010 Class 2.2.1 (compressed air quality), and USP <857> specifications for pharmaceutical-grade nitrogen. The system supports GLP/GMP-aligned workflows through timestamped operational logs and configurable audit trails. While not FDA 21 CFR Part 11–validated out-of-the-box, its data outputs are exportable in CSV format for integration into validated LIMS or ELN platforms. All electrical components comply with IEC 61000-6-3 (EMC emission standards) and IEC 61000-6-2 (immunity).

Software & Data Management

The generator operates via a dedicated embedded controller with a 4.3-inch TFT LCD interface. No external PC or proprietary software is required for basic operation. However, optional RS-485 Modbus RTU or Ethernet TCP/IP communication ports enable remote monitoring and integration into building management systems (BMS) or centralized gas utility dashboards. Logged parameters—including cumulative runtime, CMS cycle count, purity deviation history, and alarm timestamps—are stored internally for ≥12 months and exportable via USB flash drive. Firmware updates are performed offline using signed binary files to maintain system integrity and traceability.

Applications

• Aquaculture: Controlled-atmosphere transport tanks, live fish storage, and nitrogen blanketing of feed processing lines to inhibit lipid oxidation.
• Pharmaceutical QC: Carrier gas for residual solvent analysis (GC-FID), headspace inerting in stability chambers, and lyophilizer backfilling.
• Materials science: Purge gas for gloveboxes handling air-sensitive catalysts or battery electrode coatings.
• Food & beverage: Modified atmosphere packaging (MAP) line support, wine sparging, and flavor compound preservation.
• Environmental testing: Calibration gas supply for NOₓ analyzers and zero-air generation in ambient air monitoring stations.

FAQ

What is the expected service life of the carbon molecular sieve (CMS)?
Under recommended operating conditions (inlet air dew point ≤−20 °C, oil-free feed air, and routine filter replacement every 6 months), CMS lifespan exceeds 30,000 hours—equivalent to >3 years of continuous operation.
Can this unit replace liquid nitrogen dewars in GC applications?
Yes—provided the instrument’s specified nitrogen flow and purity requirements fall within the AYAN-30L’s certified envelope (30 L/min, 99.999%, ≤0.6 MPa). Compatibility should be verified against the GC manufacturer’s carrier gas specification sheet.
Is external compressed air required?
No—the unit includes a built-in, maintenance-free scroll-type air compressor; no external air source is needed.
How often do filters require replacement?
The coalescing pre-filter and desiccant water separator should be replaced every 6 months under continuous use; the CMS itself requires no scheduled replacement within its rated service life.
Does the system include pressure regulators suitable for analytical instrumentation?
Yes—an integrated dual-stage pressure regulation module provides fine-tuned downstream pressure control (0–0.6 MPa) with ±0.01 MPa repeatability, compliant with ISO 8573-7 for instrument-grade gas delivery.