Modular Air Separation Plants

Our portfolio of modular air separation plants is designed to combine proven, reliable engineering blueprints with the benefits of rapid deployment, optimized layouts, cost savings and adaptability to individual needs.

World-Class Levels of Reliability

Linde is one of the largest and most experienced suppliers of air separation plants and industrial gases worldwide, serving industries as diverse as metals, chemicals, electronics, energy, healthcare and manufacturing. We know that volume and purity requirements vary dramatically from one customer and project to another. In addition, time and budgetary constraints often call for proven, reliable solutions that can be deployed at speed.

Our portfolio of flexible, modular air separation units (ASUs) is the answer. Based on proven technologies, our modular designs are largely prefabricated for cost and time gains. These modular plants are also designed for the highest levels of availability, with all key cryogenic components manufactured in-house. Combined with a backup system, our ASUs offer reliability levels very close to 100 percent.

Our Modular Products

SPECTRA Plants for Electronics

SPECTRA^® has set the benchmark in electronics nitrogen generation, with more than 50 plants awarded in the last seven years. Its advanced technology delivers unmatched power efficiency and ultra‑high purities that meet the industry's strictest reliability standards.
With a rapid 14‑month delivery time and over 50% market share, SPECTRA plants continue to lead the market as the best‑in‑class solution for the fast‑moving electronics sector.

INSPIRE Plants for Chemical Industry

INSPIRE^® plants scale effortlessly across a wide operating envelope to meet individual nitrogen flow needs. The INSPIRE family delivers dependable nitrogen at industrial‑grade purity, while highly modularized designs ensure the lowest CAPEX.
These plants are ideal for ammonia production sites, large chemical complexes, and second‑tier electronics manufacturers seeking reliable and efficient nitrogen supply.

NOVON Plants for On-Site and Bulk Supplies

With 50 oxygen plants awarded in the last seven years, NOVON^® has become a trusted solution for on‑site oxygen supply and liquid production for the merchant market.
Its modular design and industry‑leading technology deliver the best Total Cost of Ownership, backed by long‑term proven reliability of around 99%. AI‑based process control further optimizes plant efficiency, ensuring maximum performance and uptime.

LOGO for Battery, Steel & Copper

LOGO^® plants provide low‑purity oxygen for high‑demand oxyfuel applications across the iron, steel, non‑ferrous, and glass industries. Their modularized design enables cost‑efficient on‑site supply with industry‑leading Total Cost of Ownership.
With proven reliability near 99% and AI‑driven process control, LOGO delivers consistent, optimized performance for energy‑intensive sectors.

LION Plants for Liquid Oxygen, Nitrogen and Argon

With 17 liquid plants awarded in the past seven years, LION^® delivers reliable production of liquid oxygen, nitrogen, and argon for the Linde Gas merchant business.
Fully standardized for the lowest Total Cost of Ownership, LION plants offer reliability above 99% and exceptional operational flexibility, including start‑up and shutdown times under 30 minutes. They are the ideal solution for FLEXASU^® applications, offering significant OPEX‑saving potential.

PULSE Plants for Nitrogen and Oxygen Liquification

PULSE^TM extends nitrogen capabilities with standalone liquefaction units that efficiently produce liquid nitrogen-and oxygen when required. Designed for the Linde Gas merchant business, these fully standardized plants ensure the lowest Total Cost of Ownership.
With high operational flexibility, PULSE is perfectly suited for demand‑side management, unlocking substantial OPEX savings.

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Highlights at a Glance

Execution excellence in action

Simplified on-site logistics and lower CAPEX thanks to modular design

Fast-track equipment fabrication and delivery

State-of-the-art technology and design for reliable operation

Ease of maintenance for low OPEX

Professional support services from consulting to start-up and beyond with LINDE PLANTSERV

Peace of mind thanks to our strong focus on and excellent track record in quality, health, safety and environmental (QHSE) protection

Prefabrication for rapid time-to-solution

Plate-fin heat exchangers in self-supporting steel casings

Columns in self-supporting steel casings

Coldbox sizes designed for road transport

Molecular sieve valves on skids

Cryogenic pumps on skids

Plant control system in air-conditioned, pre-wired and shop-tested container

Electrical medium-voltage switchgear in shop-assembled container

Success Stories

Excellent Teamwork Key to Success in Tainan, Taiwan

Linde LienHwa (LLH), a joint venture between LienHwa Industrial Corp. and Linde, is one of the largest industrial gas producers in Taiwan - supplying high-purity nitrogen to the Chinese electronics market from the multiple air separation plants that it operates. Expanding this complex, a new SPECTRA^® ASU went on stream in record time in Tainan Science Park, Taiwan, which is one of the main locations to supply the semiconductor industry with the nitrogen required for their production processes. Key success factors included the modular design of the new plant and excellent cooperation between the project execution teams on both sides. Linde was responsible for engineering, procurement and startup supervision.

Execution Efficiency with Award-Winning Safety Levels in Johor

In March 2019, we successfully started up and handed over a two-train NOVON^® modular ASU to Pengerang Gas Solutions Sdn. Bhd (PGSSB), a joint venture between Petronas Gas Bhd and Linde. This turnkey engineering, procurement, construction and commissioning (EPCC) project in Johor, Malaysia, will supply the RAPID complex with oxygen and nitrogen at different pressure ratings. NOVON has a capacity of 1,400 tons of oxygen per day, also producing nitrogen and argon. The oxygen is required for an ethylene oxide / ethylene glycol (EO/EG) plant whereas the nitrogen will be used in refinery processes. Linde will also supply liquid argon to the local merchant market. Highlights included strict adherence to a tight two-year execution schedule, award-winning safety performance and up-front supply of low-pressure GAN from the backup system.

LION Brings New Levels of Flexibility to Linde Gas Plant in Roethenbach

In May 2019, Linde commissioned a new LION^® modular air separation plant (ASU) at its Roethenbach site. Designed to support rapidly rising local demand for liquid oxygen and nitrogen in and around Nuremberg and in southern Germany, the plant has a LOX capacity of 5780 Nm³/h (with purity levels of 99.5%) and a LIN capacity of 18280 Nm³/h (with impurity levels of less than 0.5 ppb). Plants highlights include a flexible design (FLEXASU^®), enabling the operator to front-load production during times when there is an excess of (renewable) electricity and cut back on production when energy is scarce and thus more expensive. This FLEXASU concept has the ability to support the transition to a more sustainable energy economy.