Description

Technical Parameters

Working Principle of the Cryogenic Oxygen System

1. Air Compression

Ambient air is compressed to the required pressure level using energy-efficient compressors designed for continuous industrial operation.

2. Air Purification

Before cooling, impurities such as moisture, carbon dioxide, and hydrocarbons are removed through a molecular sieve purification unit to prevent freezing during cryogenic processing.

3. Cryogenic Cooling

The purified air passes through high-performance heat exchangers and expansion turbines, reducing temperature to cryogenic levels until the air liquefies.

4. Fractional Distillation

Liquefied air enters distillation columns where oxygen, nitrogen, and argon are separated according to their boiling temperatures.

5. Oxygen Delivery

High-purity oxygen is delivered directly to steelmaking facilities through pipeline distribution systems, ensuring stable and continuous supply.

Technical Specification Table

Technical Parameter	Specification	Description
Product Type	Cryogenic Oxygen Generation System	Industrial oxygen production system for steel plants
Technology	Cryogenic Air Separation	Low-temperature distillation process
Application Industry	Steel & Metallurgy	Blast furnace, BOF, secondary metallurgy
Oxygen Purity	99.5% – 99.6%	High purity suitable for steelmaking processes
Nitrogen Purity	≥99.9%	Protective and inert gas applications
Argon Purity	Up to 99.999% (optional)	Secondary refining applications
Oxygen Capacity Range	1,000 – 60,000 Nm³/h (customizable)	Designed according to project requirements
Operating Mode	Continuous 24/7 Operation	Industrial uninterrupted gas supply
Oxygen Delivery Pressure	0.3 – 3.5 MPa (customizable)	Adjustable according to pipeline demand
Feed Air Pressure	0.5 – 0.7 MPa	Typical compression pressure range
Specific Power Consumption	≤0.6 kWh/Nm³ O₂ (typical)	Energy-efficient system design
Cooling Method	Cryogenic Refrigeration Cycle	Turbo expander cooling system
Heat Exchange System	Plate-Fin Heat Exchanger	High thermal efficiency performance
Air Purification System	Molecular Sieve Adsorption	Removes H₂O, CO₂, hydrocarbons
Control System	PLC / DCS Automation	Fully automatic operation & monitoring
Operation Control	Remote Monitoring Supported	Real-time diagnostics & optimization
Startup Time	24–36 hours (typical)	Depends on plant scale
Plant Design Life	≥20 Years	Industrial long-term operation
Operation Availability	≥99%	High reliability configuration
Installation Type	Outdoor Modular Installation	Suitable for large industrial sites
Expansion Capability	Modular Upgrade Supported	Capacity expansion available
Safety System	Industrial Safety Interlock	Multi-level protection design
Engineering Service	EPC Turnkey Solution	Design, manufacturing, commissioning
Compliance Standards	International Industrial Standards	Customized per project region

FAQ

What are the advantages of using a cryogenic oxygen system in steel plants?

A steel plant cryogenic oxygen system provides high-purity oxygen with large production capacity and continuous operation capability, making it ideal for modern steel manufacturing. Compared with alternative oxygen generation methods, cryogenic systems offer:

Oxygen purity up to 99.5% or higher

Stable 24/7 oxygen supply for furnaces

Lower operating cost for large-scale production

Simultaneous production of nitrogen and argon

These advantages help improve combustion efficiency, enhance steel quality, and reduce overall production costs.

How is the capacity of a steel plant cryogenic oxygen system determined?

The oxygen plant capacity is customized according to the specific requirements of the steel plant. NEWTEK engineers evaluate several key factors, including:

Steel production output and furnace type

Oxygen consumption per ton of steel

Peak and average gas demand

Future expansion plans

Site utilities and energy efficiency targets

Based on process simulation and engineering calculations, an optimized system configuration is designed to ensure reliable performance and long-term scalability.