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Large Scale Air Separation Unit Manufacturer

A Large Scale Air Separation Unit (ASU) is a high-efficiency cryogenic system that continuously produces high-purity oxygen, nitrogen, and argon for industrial applications, providing an on-site gas supply solution tailored to diverse production requirements.

Internal Compression Process Air Separation Equipment
Internal Compression Process Air Separation Equipment is designed to supply high-pressure gaseous oxygen directly from the cold box. By leveraging high-pressure liquid oxygen pumping and internal...
Full Distillation Argon Air Separation Equipment
Full Distillation Argon Air Separation Equipment is an advanced cryogenic recovery system that extracts 99.999% ultra-high-purity argon directly from air separation units through a 100%...
Large-scale Air Separation Unit for Steel Mill
Large-scale Air Separation Units for Steel Mills provide continuous, high-purity oxygen, nitrogen, and argon directly to Blast Furnaces, BOFs, EAFs, and DRI plants. Engineered for 24/7 non-stop...
Oversized Air Separation Unit for Coal Chemical
Engineered for megaton-scale coal gasification, coal-to-chemicals (CTO/CTL), and synthetic fuel complexes, this extra-large cryogenic Air Separation Unit delivers high-pressure oxygen, nitrogen,...

Technical Specifications

Item	Specification
Product Name	Large Scale Air Separation Unit
Process Type	Cryogenic Air Separation
Oxygen Capacity	100 – 5,000+ TPD
Nitrogen Capacity	1,000 – 100,000 Nm³/h
Argon Production	Optional / High Recovery
Oxygen Purity	Up to 99.8%
Nitrogen Purity	Up to 99.9999%
Argon Purity	Up to 99.999%
Operating Pressure	Low, Medium, or High Pressure
Product Form	Gaseous & Cryogenic Liquid
Operating Mode	Continuous 24/7 Operation
Control System	Automated PLC / DCS Control
Design Life	20 – 30 Years

Working Principle

Air Compression: Ambient air is drawn through an air intake filter and compressed to the required operating pressure using high-efficiency centrifugal or screw compressors.

Air Purification: The compressed air passes through a pre-cooling system and a molecular sieve purification unit to thoroughly remove moisture, carbon dioxide, hydrocarbons, and dust particles.

Heat Exchange & Cooling: Purified air enters the cryogenic cold box, where it is cooled against returning product streams in high-efficiency plate-fin heat exchangers until it reaches liquefaction temperature.

Cryogenic Distillation: The liquefied air enters a multi-stage distillation column system (upper and lower columns, argon tower) where oxygen, nitrogen, and argon are separated precisely based on volatility and boiling points.

Product Extraction: High-purity gases or liquids are extracted, pressurized via internal or external pumps, and routed to pipelines or storage tanks.

Large-scale Air Separation Unit for Steel Mill

Types of Large Scale Air Separation Units

Internal Compression Process Air Separation Equipment

Designed with an internal compression process, this air separation unit delivers high-pressure oxygen directly while reducing energy consumption, making it ideal for large-scale industrial gas production.

Full Distillation Argon Air Separation Equipment

Featuring an advanced full distillation argon process, this unit simultaneously produces high-purity oxygen, nitrogen, and argon for applications requiring high-purity industrial gases.

Large Scale Air Separation Unit for Steel Mills

Purpose-built for the iron and steel industry, this high-capacity air separation unit provides a continuous and stable supply of oxygen and nitrogen to support demanding steelmaking operations.

Oversized Air Separation Unit for Coal Chemical Industry

Engineered for coal chemical projects with exceptionally high oxygen demand, this air separation unit ensures continuous large-volume gas production.

Applications

Steel Industry: Supplying high-purity oxygen for basic oxygen furnaces (BOF), electric arc furnaces (EAF), and blast furnaces, alongside nitrogen for inert protection.

Coal Chemical Industry: Providing massive volumes of oxygen for coal gasification and synthesis gas production.

Petrochemical & Refinery: Delivering nitrogen for pipeline purging, pressure testing, tank blanketing, and safety flare systems.

Industrial Gas Supply: Producing commercial merchant liquid oxygen, liquid nitrogen, and liquid argon.

Electronics & Semiconductor: Supplying ultra-high-purity (UHP) nitrogen for cleanrooms and wafer fabrication.

Glass Manufacturing: Enhancing combustion efficiency, reducing fuel usage, and increasing furnace throughput through oxygen enrichment.

Medical Sector: Producing medical-grade oxygen compliant with international healthcare standards.

Oversized Air Separation Unit for Coal Chemical

Buying Guide

Required Gas Capacity

Calculate peak hourly and daily volume requirements for oxygen, nitrogen, and argon.

Purity Specifications

Define precise purity levels based on end-use applications (e.g., standard industrial vs. electronic UHP grade).

Operating Pressure

Match delivery pressure requirements with internal or external compression configurations.

Product Form

Determine whether gaseous supply, liquid storage, or a hybrid configuration is necessary.

Frequently Asked Questions

Q: What is the average electrical power consumption per cubic meter of oxygen produced?

A: Specific power consumption typically ranges from 0.8 to 1.1 kWh/Nm³ depending on the plant scale and internal/external compression configuration.

Q: What site infrastructure and land area are required for a standard large-scale ASU installation?

A: A typical plant requires a leveled concrete foundation spanning 2,000 to 10,000 square meters, complete with high-voltage power supply and cooling water systems.

Q: How long does it take to perform a cold start versus a warm start for the cryogenic plant?

A: A warm start from ambient temperature takes roughly 24 to 36 hours, whereas a short-term restart following a brief shutdown takes less than 4 hours.

Q: What are the primary utility requirements needed to support continuous plant operation?

A: The facility requires a stable high-voltage electricity feed, cooling water circulation loops, and instrument-grade compressed air for pneumatic valves.

Q: How does Jiale handle on-site installation and mechanical commissioning globally?

A: Jiale dispatches certified senior engineers and technical supervisors worldwide to manage full on-site erection, pressure testing, and trial runs.

Q: What warranty terms and spare parts availability do you provide for core equipment?

A: We offer a comprehensive 12-month operational warranty along with a guaranteed 20-year spare parts supply commitment for all core rotating and static machinery.

Q: Are the automated control systems compatible with existing plant-wide SCADA or DCS networks?

A: Yes, our PLC/DCS architectures utilize standard industrial communication protocols such as Modbus and Profibus for seamless plant integration.

Q: What are the strict environmental and safety safety measures implemented inside the cold box?

A: The cold box is continuously purged with dry nitrogen gas and equipped with hydrocarbon analyzers to eliminate any ignition or contamination risks.

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

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