SIGMA: Standard Air Separation Unit
Cost-efficient and flexible oxygen generation using the latest cryogenic separation technology. Produces up to 380 tons per day of oxygen (up to 99.6% purity).
Many industrial facilities require a fast, reliable, and cost-effective supply of high-purity oxygen. Air Liquide Engineering & Technologies designs the SIGMA standard air separation unit to meet these needs. Built as a fully-packaged, pre-tested skid, SIGMA reduces construction costs and time to production while delivering safe, optimized, and reliable mass gas production.
Configured for your economic goals
As a global technology partner, Air Liquide E&T ensures that standard plants still offeroperation al flexibility.
- CAPEX vs. OPEX optimization: Depending on your specific requirements and local energy costs, the SIGMA unit can be uniquely configured to optimize either your capital expenditures (CAPEX) or operational expenditures (OPEX).
- Valuable co-products: While its primary output is oxygen, SIGMA can simultaneously produce gaseous nitrogen, liquid oxygen, liquid nitrogen, liquid argon, and compressed dry air.
- Backup integration: Liquid co-production can be utilized directly to refill backup liquid storage tanks on-site, ensuring uninterrupted gas supply.
A proven industrial solution
By partnering with Air Liquide Engineering & Technologies, you benefit from our broad expertise, rooted in more than 20 years of operating and maintenance experience worldwide. With more than 40 SIGMA units successfully in operation globally, it is a deeply proven, low-risk solution to secure your industrial gas supply chain.
Frequently Asked Questions (FAQ)
What industries use the SIGMA air separation unit?
The SIGMA unit is highly versatile and is installed in plants across the steel making (oxygen boosting, electric arc furnace), chemicals (ethylene oxide), glass, non-ferrous metals, pulp and paper, and wastewater treatment industries.
What is the production capacity of a SIGMA unit?
The SIGMA unit is designed for medium-scale requirements, with a production capacity ranging from 110 to 380 tons per day of oxygen, achieving purities up to 99.6%.
Does the SIGMA unit require constant manual operation?
No. The SIGMA unit is designed to be simple to operate and easy to maintain. Its automatic start, stop, and load adaptation capabilities allow the system to run safely unattended.
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