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What Is a Small Air Separation Unit?

A Small Air Separation Unit is an industrial system that separates atmospheric air into oxygen, nitrogen, and other gases through cryogenic, PSA, or membrane technologies for on-site industrial gas production.

Small Cryogenic Air Separation Unit
Small Cryogenic Air Separation Unit (ASU) is pre-assembled, skid-mounted gas generation system designed to produce high-purity oxygen and nitrogen on-site. Using low-temperature cryogenic...
PSA Nitrogen Generation Equipment
PSA Nitrogen Generation Equipment is engineered for continuous, on-site high-purity nitrogen production. Designed with premium Carbon Molecular Sieve (CMS) adsorbents, the system converts ambient...
Membrane Separation Nitrogen Generation Equipment
The Membrane Separation Nitrogen Generation Equipment utilizes advanced polymer hollow-fiber membrane technology to continuously separate nitrogen from compressed air on site. Engineered for...

How Does a Small Air Separation Unit Work?

Compression and Filtration

Atmospheric air is drawn through intake filters, removing dust and particulate matter, before being compressed to the required system pressure.

Purification

The compressed air passes through pre-cooling and purification units (such as molecular sieve adsorbers) to eliminate moisture, carbon dioxide, and hydrocarbons.

Separation

The treated air enters the core separation module—either undergoing deep refrigeration and cryogenic distillation, pressure-dependent selective adsorption via carbon molecular sieves, or selective permeation through hollow fiber polymer membranes.

Delivery

The target gases (oxygen or nitrogen) are recovered at specified purities and pressures, ready for direct pipeline distribution or storage.

Types of Small Air Separation Unit

Small Cryogenic Air Separation Unit

Integrates traditional large-scale distillation into a compact, skid-mounted framework, utilizing cryogenic temperatures around -196°C to simultaneously deliver multi-gas output up to 99.5% oxygen purity for heavy industrial applications like steel manufacturing and medical pipelines.

PSA Nitrogen Generation Equipment

Relies on Pressure Swing Adsorption technology with carbon molecular sieves and dual alternating towers, providing rapid startup, simple PLC automation, and low initial capital investment for dedicated nitrogen applications such as food packaging and electronics.

Membrane Separation Nitrogen Generation Equipment

Employs advanced polymer hollow fiber membranes based on differential permeation speeds, delivering an ultra-compact, low-maintenance, and mobile solution ideal for remote sites, offshore platforms, and marine tank blanketing.

Small Air Separation Unit Specifications

Parameter	Typical Specification Range
Product Name	Small Air Separation Unit
Available Technologies	Cryogenic Separation / PSA / Membrane Separation
Main Products	Oxygen, Nitrogen, Argon (Configuration dependent)
Oxygen Production Capacity	10 to 2,000 Nm³/h
Nitrogen Production Capacity	10 to 5,000 Nm³/h
Oxygen Purity	90% to 99.5%
Nitrogen Purity	95% to 99.999%
Operating Mode	Continuous 24/7 Operation
Installation Type	Skid-mounted / Containerized / Modular
Cooling Method	Air Cooling or Water Cooling
Control System	Automated PLC Control with HMI Touchscreen
Design Life	15 to 20 Years (with proper maintenance)

Applications of Small Air Separation Unit

Steel and Metal Processing

Powers oxygen-enriched combustion, accelerates furnace melting rates, and provides protective annealing atmospheres.

Chemical and Petrochemical Processing

Supplies nitrogen for reactor blanketing and precise oxygen volumes for catalytic oxidation synthesis.

Oil and Gas Exploration

Deploys nitrogen for pipeline pressure testing, drying, and enhanced oil recovery in remote fields.

Medical and Healthcare Facilities

Delivers medical-grade oxygen directly to wards and operating theaters, eliminating cylinder dependency.

Food and Beverage Industry

Uses high-purity nitrogen for modified atmosphere packaging (MAP) to extend shelf life and freshness.

Electronics Manufacturing

Supplies ultra-high-purity nitrogen (99.999%) during semiconductor fabrication to prevent surface oxidation.

Frequently Asked Questions

Q: Can the unit automatically adjust production output during low-demand periods?

A: Yes, advanced PLC control systems feature automatic load-matching capabilities to reduce power consumption when factory gas demand drops.

Q: What site utility requirements are mandatory prior to equipment delivery?

A: A stable three-phase industrial power supply, a compressed air source (if not integrated), and a level concrete slab with proper drainage are required.

Q: Are specialized operators required on-site to run the system daily?

A: No, fully automated PLC touchscreens enable unattended operation requiring only routine periodic visual inspections by plant technicians.

Q: How does ambient temperature fluctuation affect system performance?

A: Extreme high ambient temperatures can impact cooling efficiency, which Jiale mitigates by offering customized tropical-rated cooling packages.

Q: What certifications do Jiale pressure vessels and electrical panels hold?

A: All core components comply with international industrial manufacturing standards including ISO, ASME, and CE safety directives.

Q: Can an existing PSA nitrogen generator be upgraded later for higher capacity?

A: Yes, modular skid designs allow parallel adsorption tower additions to scale up production capacity as your facility grows.

Q: What type of after-sales technical training is provided for customer personnel?

A: Comprehensive on-site operational training and remote video instructions are provided during and after system commissioning.

Q: How are replacement spare parts procured internationally?

A: Jiale maintains a complete global inventory of wear-and-tear replacement parts dispatched rapidly via international air courier services.

Q: Is remote cloud monitoring available for international plant managers?

A: Yes, optional IoT-enabled remote telemetry modules allow engineers to monitor system pressure, purity, and status from any global location.

As one of the most professional small air separation unit manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy durable small air separation unit for sale here from our factory. We also accept customized orders.

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