1. Product Overview

　　A membrane nitrogen generation unit is an on-site nitrogen production system that uses hollow fiber membranes as the core separation medium. Its operating principle is based on the difference in permeation rates of different gas molecules through polymer membranes: after pretreatment, compressed air enters the membrane module, where “fast gases” such as oxygen, carbon dioxide, and water vapor preferentially permeate through the membrane wall and are vented, while nitrogen, as the “slow gas,” is enriched and delivered on the retentate side, achieving continuous separation of air. The entire system requires no phase change and no chemical adsorbents, producing nitrogen immediately upon startup. It is a highly efficient and energy-saving alternative to conventional cryogenic nitrogen generation and PSA (Pressure Swing Adsorption) nitrogen generation.

　　2. Core Technical Advantages

　　1. Ultra-low energy consumption: The membrane separation process operates at ambient temperature with no regeneration heating cycle. Overall energy consumption is 15%–30% lower than PSA nitrogen generation and over 40% lower than cryogenic nitrogen generation, delivering significant long-term operating cost savings.

　　2. Continuous and stable gas production: With no switching valve assemblies and no alternating adsorption tower cycles, the system delivers nitrogen of stable purity 24/7. Outlet pressure fluctuation is less than ±0.02 MPa, ensuring constant and reliable gas quality.

　　3. Modular compact design: Each membrane tube is only a few inches in diameter, and multiple tubes can be connected in parallel to flexibly scale capacity. The footprint is only one-third to one-half that of a PSA system of equivalent capacity, facilitating integration and on-site deployment.

　　4. Long service life and maintenance-free operation: Hollow fiber membranes have no moving parts and no adsorbent depletion. Under normal operating conditions, membrane module service life can reach 8–10 years with no consumable replacement required during this period, substantially reducing operation and maintenance costs.

　　5. Fast start-stop response: The system reaches qualified nitrogen production in only 2–5 minutes from startup. It can be turned on and off on demand with no pre-cooling or pre-heating wait, making it especially suitable for intermittent gas consumption and emergency supply scenarios.

　　3. Product Specifications and Customization Capabilities

　　Standard products cover the full range of nitrogen flow rates from 5 to 5,000 Nm³/h and purities from 95% to 99.9%. Custom integration is available according to customer requirements, including: compressed air pretreatment units (refrigerated dryers, precision filters), online flow and purity monitoring systems, fully automatic PLC control with remote communication modules, explosion-proof enclosures (Exd II BT4), and skid-mounted integrated bases. Export-oriented models support multiple regional voltage standards such as 415V/50Hz and 480V/60Hz, adapting to grid requirements in different regions worldwide.

　　4. Application Fields

　　Membrane nitrogen generation units are widely used in: oil and gas pipeline purging and storage tank inerting, chemical reactor protection and explosion-proof purging, nitrogen protection for SMT reflow soldering and wave soldering in the electronics industry, modified atmosphere packaging (MAP) for food and beverage, pharmaceutical API production and aseptic packaging, controlled atmosphere protection for heat treatment industrial furnaces, auxiliary gas for laser cutting, inerting systems for offshore platforms and vessels, fire prevention and extinguishing in underground coal mines, and many other industrial fields.

　　5. Quality Certification and Global Service

　　The full product line is CE certified and ISO 9001 quality management system certified. Key membrane elements use imported polymer materials, and every unit undergoes 72 hours of continuous operation testing and airtightness inspection before shipment. We provide global shipping, installation guidance, commissioning, and lifetime technical support services. Overseas customers enjoy 24-hour English-language technical response, ensuring stable equipment operation anywhere in the world.