Cryogenic Air Separation System
Our cryogenic air separation system adopts internationally advanced low-temperature distillation technology and serves as a core industrial solution for large-scale production of high-purity oxygen, nitrogen, and argon. By cooling ambient air to its liquefaction temperature and separating components based on their boiling point differences, it provides stable and reliable gas supply for metallurgy, chemical processing, healthcare, electronics, and new-energy industries. With outstanding energy efficiency, superior operating reliability, and flexible customization capabilities, Shenger Gas systems have become trusted solutions for industrial clients worldwide.
Working Principle and Core Structure
This system is based on a mature cryogenic air separation system process, following clear engineering steps:
1. Air Purification and Compression
Ambient air is filtered to remove dust and impurities, then compressed to a designated pressure by multi-stage compressors.
2. Pre-Cooling and Purification
Compressed air is cooled and sent into molecular-sieve adsorbers to thoroughly remove moisture, CO₂, and hydrocarbons-crucial for safe low-temperature operation.
3. Heat Exchange and Liquefaction
Clean air is cooled close to its liquefaction point through counter-flow heat exchange with low-temperature product streams in the main heat exchanger.
4. Cryogenic Distillation
Liquefied air enters a double-column distillation system (lower and upper towers). Utilizing the difference in boiling points between oxygen (–183°C), nitrogen (–196°C), and argon, repeated vaporization-condensation stages occur on trays, resulting in high-purity nitrogen at the top, high-purity oxygen at the bottom, and crude argon from a side draw.
5. Product Delivery and Storage
Separated gases are rewarmed to ambient temperature via the main heat exchanger and delivered to pipelines or stored in liquid form after compression.
Core structural units include: air compression system, pre-cooling and purification system, plate-fin main heat exchanger, double-column distillation system, turbine-expander refrigeration system, and advanced DCS/PLC integrated control system.
Typical Product Purity and Flow Range (Customizable)
|
Product Gas |
Purity Range |
Standard Flow Rate (Nm³/h) |
Delivery Pressure (G) |
|
Oxygen (O₂) |
≥ 99.6% (up to 99.8%) |
500 – 100,000 |
0.5 – 3.0 MPa |
|
Nitrogen (N₂) |
≥ 99.999% (5N) |
1,000 – 120,000 |
0.1 – 0.8 MPa |
|
Liquid Oxygen / Liquid Nitrogen |
Same as gaseous products |
Optional liquefaction package |
Temperature and Energy Consumption Indicators
1. Low-temperature operating range:
The core separation process is conducted at –175°C to –195°C, requiring stringent cryogenic design and insulation performance.
2. Energy efficiency:
Specific power consumption (kWh/Nm³ O₂) is a key technical indicator for a cryogenic air separation system. Through optimized process design, high-efficiency trays/packing, and thermal-energy recovery technologies, our systems ensure industry-leading performance. Consumption is calculated precisely based on product type, capacity, and delivery pressure.
Industrial Applications
Our systems support industries with strict requirements for gas quality and supply reliability:
- Metallurgy: Blast furnace oxygen enrichment, steelmaking converters, copper smelting, glass melting furnaces
- Chemical & Petrochemical: Coal gasification, ethylene production, fertilizer synthesis, chlor-alkali industry
- New Energy: Polysilicon and solar PV production, hydrogen industry chain (production and liquefaction)
- Medical & Food: Medical oxygen, food-grade nitrogen preservation, cryogenic grinding
Project Delivery, Customization, and Services
1. EPC capability:
Engineering, manufacturing, installation, commissioning, and operator training - a full turnkey solution.
2. Deep customization:
Tailored plant configurations based on site conditions, utilities, and product mix requirements (e.g., multiple pressure levels and liquid products) - one solution per plant.
3. Lifecycle services:
Remote monitoring, predictive maintenance, rapid spare-part support, and upgrade solutions to maximize availability and lifecycle value.
Certifications and Standards
Our engineering and manufacturing comply with leading global standards to ensure safety and reliability:
- Quality Management: ISO 9001 certification
- Pressure Equipment: ASME "U" Stamp or GB/TSG compliance as required
- Design & Materials: ASME B31.3, PED (2014/68/EU), and applicable safety directives
- Electrical & Safety: IEC standards and ATEX explosion-proof requirements (where applicable)
electing a cryogenic air separation system is a major long-term investment. We provide not just equipment, but comprehensive gas solutions built on solid engineering expertise. From precise process simulation, lean manufacturing quality, and efficient on-site execution to continuous technical support, we ensure every phase of the project is reliable, professional, and cost-effective.
Shenger Gas is committed to creating value with innovative technology, dependable products, and full-lifecycle services - your trusted partner in industrial gas supply.
Hot Tags: cryogenic air separation system, China cryogenic air separation system manufacturers, suppliers, factory, Cryogenic Liquid Nitrogen Plant
You Might Also Like
Send Inquiry