Metallurgy & Steelmaking
In the steel industry, the Air Separation Unit (ASU) plays a critical role by supplying high-purity oxygen (O₂) for blast furnaces and nitrogen (N₂) for inerting applications.
Oxygen Enrichment in Blast Furnaces – Pure oxygen is injected to intensify combustion, improving efficiency and reducing coke consumption while lowering CO₂ emissions.
Nitrogen for Inerting & Cooling – Nitrogen is used to prevent oxidation during metal processing and to cool hot-rolled steel, ensuring product quality.
How It Works: The ASU cools compressed air to cryogenic temperatures (-196°C), separating gases via distillation columns. Oxygen is extracted for combustion, while nitrogen is purified for inerting.
Yield and purity (out of bounds)
| Product Name | Yield | purity (V/V) | Outlet pressure | Remark |
| Nm³/h | MPa(G) | |||
| Liquid Oxygen | 1500 | ≥99.6% O₂ | Into the tank | continuous |
| Liquid Nitrogen | 300 | ≤3ppm O₂ | Into the tank | continuous |
| Liquid Argon | 40 | ≤1.5ppm O₂,≤4ppm N₂ | Into the tank | continuous |
Note: Liquid products are converted to gaseous data. Nm/h refers to 0℃, 760mmHg.
Operation cycle (interval between two major heatings) ≥2 years
Device heating and thawing time ~36 hours
Device startup time (from expansion machine startup to oxygen product reaching purity index) ~36 hours
FAQ
What is the Air Separation Unit (ASU)?
An Air Separation Unit (ASU) is an industrial system that separates atmospheric air into high-purity oxygen (O₂), nitrogen (N₂), and argon (Ar) using cryogenic distillation or adsorption technologies. It is widely used in industries like steelmaking, chemicals, healthcare, and energy.
Key Feature: NEWTEK Custom turnkey solutions ensure seamless integration, from design to commissioning, tailored to client needs.
What is ASU in Oil & Gas?
In oil & gas, ASUs provide nitrogen for purging, blanketing, and enhanced oil recovery (EOR), as well as oxygen for sulfur removal and gas processing.
Key Feature: Explosion-proof and corrosion-resistant configurations ensure safety in hazardous environments.
What is an Air Separation Unit (ASU) in a Power Plant?
An Air Separation Unit (ASU) in a Power Plant provides high purity oxygen (O₂) and nitrogen (N₂) for critical processes.
In an Integrated Gasification Combined Cycle (IGCC) plant, oxygen is used to convert coal or biomass into syngas, which improves combustion efficiency and reduces emissions.
Nitrogen is used as an inert gas for equipment purging, blanketing and cooling in turbines and ducting.
An Air Separation Unit (ASU) in a Power Plant is designed for high reliability, high energy efficiency and seamless integration with the power generation system.
Hot Tags: industrial asu air separation unit, China industrial asu air separation unit manufacturers, suppliers, air separation exporter, air separation negotiation, argon production negotiation, ASU oxygen plant, industrial gas separation distributor, liquid oxygen plant and liquid nitrogen plant
