Containerized Membrane Nitrogen Generator

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Containerized Membrane Nitrogen Generator
Nitrogen Generator

Containerized Membrane Nitrogen Generator

HBFD-M Series

Containerized membrane nitrogen generator uses hollow fiber membrane separation technology to produce on-site nitrogen (95%-99.9% purity) from compressed air, integrated into a standard 20/40-foot ISO container. Designed specifically for oil & gas industry with explosion-proof rating, it features simple structure with minimal moving parts, low maintenance, low dew point (<=-40 degrees C), and flexible capacity expansion. Ideal for drilling, pipeline purging, tank blanketing, and workover operations.

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Containerized Membrane Nitrogen Generator Overview

Low-cost containerized membrane nitrogen generator for oil and gas industry: a safe and efficient on-site nitrogen supply solution.

Membrane Nitrogen Generator Process Flow

Membrane Nitrogen Generator Application in Oil & Gas Industry

Product Characteristics

  • Membrane separation system provides a simple, low maintenance and economical method for the production of nitrogen
  • Low moving parts and low maintenance workload
  • Standard membrane component integrated engineering design, quick installation, simple operation
  • Nitrogen product quality is stable and reliable
  • Nitrogen production capacity can be increased
  • Product nitrogen is clean with low dew point

Product Overview

This equipment is an integrated membrane nitrogen generation system customized for the oil and gas industry. With hollow fiber membrane separation technology as the core, it integrates functional modules such as compressed air pretreatment, membrane separation, nitrogen buffering, and intelligent control into a 20/40-foot standard container. It features "ready to transport, install and use": it can be directly transported to oil and gas operation sites (wellheads, tank farms, pipeline construction sections, etc.), and can be started and operated only by connecting pipelines and power supplies. It can stably supply nitrogen with a purity of 95%-99.9%, fully adapting to various safety and process requirements of the oil and gas industry.

Working Principle

The main principle of membrane separation nitrogen equipment is selective permeation. Each gas component in the air has its unique permeability and permeability rate in the polymer membrane, showing the ability to dissolve and diffuse through the polymer membrane. According to this characteristic, the gas with faster permeability (oxygen, water vapor) can be separated from the slow gas such as nitrogen.

Membrane Separation Process

High-quality hollow fiber membrane modules are adopted to achieve air separation based on the "difference in membrane permeability rates of different gas molecules": after pretreatment, compressed air enters the membrane modules. Small molecules such as oxygen and water vapor quickly permeate through the membrane walls and are discharged, while nitrogen molecules are enriched and collected as high-purity nitrogen product.

Advantages Over Traditional Technologies

  • Extremely simple structure: No wearing parts such as switching valves and adsorption towers (as in PSA nitrogen generation), no chemical reaction links, and no mechanical wear during operation.
  • Low energy consumption: Nitrogen generation only relies on the energy consumption of front-end air compression; no additional energy consumption is required for subsequent separation. The long-term operation cost is 20%-30% lower than PSA nitrogen generation.
  • Long service life: The designed service life of the membrane module is 5-8 years (under normal working conditions), with no frequent replacement of core components required, further reducing maintenance costs.

Core Product Features

1. Membrane Separation System: Simple, Low-Maintenance, Economical

Compared with traditional technologies, membrane separation offers:

  • Extremely simple structure with no switching valves or adsorption towers
  • Low energy consumption — long-term operating cost 20%-30% lower than PSA
  • Long membrane module service life of 5-8 years under normal conditions

2. Few Wear Parts + Low Maintenance Workload

Designed for oil and gas sites with limited personnel and simple maintenance conditions:

  • Maintenance-free core components: Membrane modules and nitrogen buffer tanks have no operational wear risk
  • High durability: Filters and valves use 304 stainless steel industrial-grade corrosion-resistant materials, with failure rate below 0.5% per year
  • Simple daily maintenance: Only air filter element replacement needed quarterly (5-10 minutes); daily pressure and temperature parameter inspection only

3. Standard Membrane Module Integration Design

Factory prefabrication + container integration mode. On-site deployment requires only 3 steps:

  1. Connect to an external compressed air source
  2. Connect the nitrogen output pipeline
  3. Turn on the power and start the control system

Entire installation cycle ≤48 hours, compared to 15-30 days for traditional on-site installation. User-friendly PLC touch screen interface with core functions only — operators can work independently after 1 hour of training.

4. Nitrogen Quality: Stable, Reliable, Clean, Low Dew Point

  • Stable purity: 95%-99.9% (customizable), meeting oil and gas inerting requirements (O₂ < 5%)
  • Low dew point: Standard ≤-40°C (optional ≤-60°C), preventing pipeline/tank corrosion
  • High cleanliness: Multi-stage precision filtration (1µm), oil-free and particle-free, compliant with API 551

5. Flexible Capacity Expansion

Modular membrane module design: single 20-foot container capacity 50-200 Nm³/h. Capacity expansion by adding membrane modules or paralleling multiple units (e.g., two units parallel achieve 400 Nm³/h). No core system replacement needed.

6. Containerized Design for Mobility and Extreme Environments

  • Transport: Standard 20/40-foot container, direct transport to remote oilfields by road/railway
  • Environment tolerance: Ex d IIB T4 explosion-proof, IP54 protection, insulation layer for extreme conditions (50°C desert to -30°C cold regions)
  • Remote management: Optional remote data transmission for unattended management

Typical Application Scenarios in Oil & Gas Industry

1. Drilling Operations: Drilling Fluid Aeration and Wellbore Inerting

In underbalanced drilling, nitrogen is injected into drilling fluid to reduce density and avoid reservoir fracturing. Escaping oil and gas from wellbore requires nitrogen inerting to prevent explosion. This equipment can be deployed next to the drilling platform, moving with the drill bit, stably supplying low dew point nitrogen for drilling safety and reservoir protection.

2. Oil and Gas Storage Tanks: Inert Gas Sealing and Displacement

During loading, unloading and storage of crude oil/natural gas, continuous nitrogen injection maintains oxygen content below 5%. This equipment can be deployed near tank farms, supplying nitrogen 24/7 without long-distance pipelines. Low maintenance feature reduces tank farm inspection workload.

3. Pipeline Construction: Purging and Drying

For newly laid or overhauled pipelines, high-purity low dew point nitrogen efficiently displaces air and dries inner walls. Containerized design moves with construction sections, adapting to phased purging requirements of long-distance pipelines, improving construction efficiency by over 30%.

4. Workover Operations: Emergency Safety Protection

During workover operations, residual oil and gas escaping from wellbore requires nitrogen inerting of operation space. Equipment can be quickly transported and deployed within 48 hours, ensuring safe development of time-sensitive emergency projects.

Value to Customers

  • Cost reduction: Operating cost 40%-60% lower than liquid nitrogen delivery, 20%-30% lower than PSA
  • Efficiency improvement: Deployment cycle shortened by 80%
  • Safety: Stable low dew point high-purity nitrogen reduces explosion and corrosion risks
  • Simplified management: Low maintenance and easy operation reduce personnel training and management workload
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