MEMBRANE NITROGEN SYSTEMS

Membrane Nitrogen Generator Systems

Compact and fast-starting systems for oil and gas, offshore, mobile and selected low-to-medium purity duties.

Membrane Nitrogen Generator Systems
Typical configuration and operating context
95–99.5%Typical purity band
FastStart and response
CompactSmall footprint
FlexibleSkid or container

These are reference ranges from existing materials. Maximum flow and highest purity may not coincide. Confirm the model, feed conditions, dew-point basis and optional configuration in the project datasheet.

ENGINEERING NOTES

Define the duty before selecting equipment.

The following establishes a technical discussion framework. Final performance, scope, certification and acceptance criteria are defined in the agreed technical specification.

01

Separation principle

Clean compressed air enters hollow-fibre membrane modules. Faster-permeating oxygen and water vapour pass through the membrane wall while nitrogen-rich gas exits the opposite end. With no adsorption-vessel cycling, the system supports fast starts and compact layouts.

Distinguish product gas from permeate.

Treated airMembrane bankBuffer & analysisPoint of usePermeate gas

Concept gas path. Project engineering defines vent handling, valve timing, sampling and safeguards; this is not a construction drawing.

ENGINEERING SCHEMATIC

Continuous membrane separation path

Fast gases permeate the hollow fibres while nitrogen-rich retentate continues to the process.

01 Compressed airStable inlet
02 Fine pretreatmentProtect modules
03 Membrane modulesSelective permeation
04 Fast-gas permeateOxygen & water vapour
05 Nitrogen-rich productBuffered to process
Main gas pathMonitoring / controlConcept diagram, not for construction.
02

Engineered configurations

Systems can be configured as indoor cabinets, skids, containers or mobile packages, with instrumentation and controls selected for hazardous-area classification, ambient conditions, corrosion protection and project standards.

03

Membrane or PSA?

Selection should not be price-only. Higher purity often favours PSA, while rapid start, lower purity, low weight or limited space can favour membrane technology. Compare feed-air demand, energy, maintenance, environment and lifecycle cost.

04

Purity, recovery and feed-air demand

Membrane purity and recovery are linked. Raising purity normally reduces product recovery and increases feed air per unit of nitrogen, so purity should never be specified without flow and energy consequences.

05

Environment and module protection

High temperature, liquid water, oil aerosol and contaminants affect membrane performance. Offshore, desert and cold-climate packages require checks for inlet-temperature control, drainage, corrosion protection, insulation, heat tracing, ventilation and start-up procedure.

06

Mobile and container delivery

Mobile packages combine transport loads, lifting points, chassis, vibration, hose interfaces, quick connections, diesel or electric drive, earthing and hazardous-area requirements. Maximum practical integration should be tested before dispatch.

Select the membrane bank with its air treatment
Image information

This image explains equipment configuration and engineering processes; it is not a customer-site or acceptance record.

EQUIPMENT & DELIVERY

Select the membrane bank with its air treatment

Air enters the membrane bank. Faster-permeating gases leave on the permeate side, while nitrogen-rich gas exits the product side. Flow, purity, pressure and temperature interact; filtration and feed conditions must follow the membrane supplier’s data.

Leave room to maintain the package
Image information

This image explains equipment configuration and engineering processes; it is not a customer-site or acceptance record.

EQUIPMENT & DELIVERY

Leave room to maintain the package

A container combines equipment and interfaces in an engineered package. Check heat rejection, ventilation, drainage, noise, maintenance and electrical isolation. Transport dimensions and lifting arrangements require a separate review; this concept has no assumed dimensions.

Measurement starts with the sampling point
Image information

This image explains equipment configuration and engineering processes; it is not a customer-site or acceptance record.

EQUIPMENT & DELIVERY

Measurement starts with the sampling point

Purity, residual oxygen and dew point are different specifications. Define the analyte, sampling location and pressure basis before choosing instruments, alarms and off-spec handling. The illustration explains the arrangement and contains no test readings.

Download project input checklist (CSV) ↓

SYSTEM BOUNDARY

A deliverable system makes every critical interface explicit.

01 Feed air→02 Air treatment→03 Gas separation→04 Analysis & storage→05 Process user

PAGE FAQ

Answer the critical questions before sizing.

What purity is membrane nitrogen suited to?

It is often selected for low-to-medium purity and high-flow duties; the final range depends on module type, temperature, pressure and recovery.

Does a membrane system need air treatment?

Yes. Liquid water, oil aerosol, particles and temperature must be controlled to protect the modules and stabilise performance.

How should membrane and PSA be compared?

Compare purity, product flow, feed air, energy, footprint, start-up, maintenance, environment and total cost at the same duty.

Add technical details (optional; unknown is fine)

We will contact you about this request. Share what you know; selection and pricing follow confirmed operating conditions.

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