Conventional External Compression Air Separation Equipment
Product Overview
Conventional External Compression Air Separation Equipment is a large-scale cryogenic air separation system designed for continuous production of high-purity oxygen, nitrogen, and optional argon. Unlike internal compression systems, product gases leave the cold box at low pressure and are compressed separately, providing greater flexibility for medium- and high-pressure industrial gas applications.
Parameter
|
Oxygen production |
oxygen purity |
Oxygen outlet pressure from the cold box |
Final pressure of oxygen |
Nitrogen production and purity |
Liquid oxygen/liquid nitrogen production |
Unit oxygen consumption |
|
1,000 – 100,000+ Nm³/h |
99.2% -99.8% (industrial grade) |
~12 – 35 kPa(G) |
0.8-3.0 MPa (G) or higher |
Production exceeds oxygen production, purity ≤ 10 ppm O ₂ |
0-10% of the main product gas |
0.35 – 0.55 kWh/Nm³ O₂ |
(For reference only)
Key Operational Advantages
Independent Pressure Control: External boosters isolate gas separation from downstream pressure requirements. Outlet pressures adjust independently without altering internal cold box thermodynamics or process stability.
Simplified Maintenance: Dynamic compressors are located outside the cold box. Routine overhauls and seal replacements are performed without disturbing cold box insulation or vacuum integrity, minimizing system downtime.
Seamless System Expansion: Capacity increases or process pressure upgrades require only external piping or compressor modifications, leaving the core cryogenic distillation structure completely untouched.
Manufacturing, Quality Control & Delivery
Process Engineering & Simulation: Validated via Aspen Plus thermodynamic simulation for accurate yield and energy consumption predictions.
Strict Quality Verification: 100% NDT on cryogenic pressure vessels, helium leak testing for primary heat exchangers, and full Factory Acceptance Testing (FAT).
Modular Export Delivery: Skid-mounted auxiliary systems and containerized cold box modules designed for efficient international shipping and fast site erection.
Factory Capacity & Strength
Proven Experience: 20+ years specializing in Air Separation & CO₂ Recovery Systems.
Massive Scale: 160-acre facility with 69,000m² standardized workshops & 500+ workers.
Smart Manufacturing: 300+ advanced machines, including laser cutters, robotic drills & automated welding.
Global Certifications: ASME, CE, ISO, and Class A2 Pressure Vessel licenses.
Worldwide Service: Products exported to 70+ countries with local support offices in Vietnam & Indonesia.
Turnkey EPC & Life-Cycle Services
Custom Engineering: Tailored flow rates, site-specific power voltage/frequency, and ambient condition adaptation.
Turnkey Execution: Civil engineering design, equipment supply, site assembly supervision, and commissioning (SAT).
Automated Control: Integrated PLC/DCS/SCADA with automated start-stop, remote monitoring, process optimization, and safety interlocks.
Global After-Sales: On-site operator training, spare parts packages, and remote technical assistance.
FAQ
Q: What is the primary functional difference between internal and external compression systems?
A: In external compression, products exit the cold box at low pressure and are elevated to process pressure using external gas compressors, eliminating high-pressure liquid pumps inside the cold box.
Q: What gas purities can this system consistently achieve?
A: The plant delivers industrial oxygen at 99.6% or higher purity and high-purity nitrogen with oxygen content below 10 ppm. High-purity argon (99.999% or higher) can be produced via an optional integrated column.
Q: Is this system capable of 24/7 continuous baseload operation?
A: Yes. The unit is engineered for uninterrupted operation with annual availability exceeding 8,000 hours. Integrated DCS/PLC systems manage automated load adjustments, fault diagnostics, and safety interlocks.
Q: What international design codes and standards govern equipment fabrication?
A: All pressure vessels and piping systems comply with global codes, including ASME Section VIII, CE-PED (Pressure Equipment Directive), ISO 9001/14001, and applicable API rotating equipment standards.
Q: How does the external compression design streamline future capacity modifications?
A: Because high-pressure compression is decoupled from the cold box, capacity or pressure adjustments are achieved by reconfiguring or adding external boosters and piping, leaving the primary distillation column untouched.
Q: What level of site support is included during installation and commissioning?
A: We provide complete EPC field management, including civil engineering review, mechanical erection supervision, system commissioning (SAT), and comprehensive local operator training.
Q: How does the system handle process automation and remote diagnostics?
A: The control package integrates local DCS/PLC architectures with cloud-ready SCADA, enabling real-time process monitoring, historical trend logging, predictive maintenance alerts, and remote troubleshooting support.
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