Membrane Nitrogen Generator

The Hollow Fiber Membrane Nitrogen Generator (Membrane Separation Nitrogen Generator) uses the principle of selective diffusion and permeation through a hollow fiber membrane module to separate nitrogen directly from compressed air.

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?Principle of Atmospheric Desorption and Regeneration

Hollow Fiber Membrane Nitrogen Generators, including containerized, stainless steel, skid-mounted, and explosion-proof models, use the selective permeability of membranes to achieve gas separation and purification. The hollow fiber membrane module is a cylindrical bundle made of high-performance polymer material, containing hundreds of fibers less than 1mm in diameter. Compressed air enters from one end, and gas molecules, driven by pressure, undergo adsorption, dissolution, diffusion, and desorption. Faster-permeating gases (e.g., oxygen, carbon dioxide, water vapor) permeate the membrane to the low-pressure side, exiting from one side of the module, while nitrogen, with a slower permeation rate, is concentrated on the high-pressure side and exits from the opposite end, thus achieving oxygen-nitrogen separation.

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?Gas Permeation Rate Order

The performance and longevity of hollow fiber membrane modules depend on their gas production capacity, recovery rate, oil resistance, water permeability, pressure tolerance, and resilience to pressure fluctuations.

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?Features

- Produces nitrogen with purity levels from 90% up to 99.9%, meeting various user requirements.

- Fast start-up: produces qualified nitrogen within 5–10 minutes, ready for immediate use.

- Optional energy-saving automatic purity adjustment technology, allowing quick adjustments for various industry needs.

- Modular pre-assembly with air compressor, purification, and nitrogen generation systems for easy and quick on-site installation.

- All stainless-steel piping design prevents rust contamination, protecting the membrane module.

- High nitrogen output pressure (up to 1.3 MPa), eliminating the need for an additional booster, reducing investment costs.

- Optional DCS multi-function monitoring and remote wireless monitoring system for real-time local and remote monitoring, data storage, and system operation tracking.

- 24/7 professional support and maintenance reminders to ensure optimal operation.

- Customizable to meet requirements for petrochemical, pharmaceutical, food, explosion-proof, ASME, and long-life pressure vessel applications.

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?Effective Guarantee of Stable Operation

1. The air compressor outlet includes an air-water separator that removes over 95% of liquid water and oil impurities, reducing the load on dryers and filters.

2. The dryer is designed for high temperatures, ensuring clean dehumidification with inlet temperatures ≤80°C.

3. A buffer tank before the dryer and filters stabilizes airflow, improving purification efficiency.

4. Three-stage filtration with a minimum oil content of 0.001 ppm and an activated carbon filter prevents oil mist entry.

5. Automatic and manual drain devices on the buffer tank and filters for easy water discharge.

6. High-quality, imported hollow fiber membrane modules.

7. All stainless-steel nitrogen system piping prevents rust contamination.

8. Automatic venting and alarm system for off-spec nitrogen, ensuring only qualified nitrogen is supplied.

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?System Components

The system consists of an air compressor, purification unit, nitrogen generation unit, and nitrogen storage. Basic modules include:

- Screw air compressor

- W-grade air-water separator and filters

- Air buffer tank

- 7-stage filtration

- Refrigeration dryer

- 5-stage fine filter

- Activated carbon oil remover

- 3-stage ultra-fine filter

- Hollow fiber membrane nitrogen generator

- Nitrogen detection device

- Nitrogen storage tank

Air Source Requirements:

- Pressure: 1.2–1.6 MPa

- Dew Point: -17 to -10°C

- Oil Content: ≤0.01 ppm

- Particle Size: ≤0.01 μm

Nitrogen Product Parameters:

- Pressure: 0.8–1.4 MPa

- Dew Point: -60°C

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?Configurable Features