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Introduction
Air separation maintenance services ensure the safe and stable operation of air separation units by conducting systematic inspections, repairs, and maintenance to promptly address potential equipment issues and extend the service life of the units.
Details
Air Separation Maintenance Services cover the full lifecycle maintenance needs of air separation units, providing specialized maintenance support for critical equipment such as distillation columns, compressors, expanders, heat exchangers, valves, and instruments.
As the heart of continuous production, air separation units operate under harsh conditions-including high temperatures, high pressure, low temperatures, and high-speed operation-over extended periods, making them prone to issues such as wear, scaling, leaks, and performance degradation. Regular professional maintenance not only prevents production losses caused by sudden failures but also restores the equipment to its design performance through meticulous care, ensuring the unit remains in optimal operating condition at all times and safeguarding the company's safe production operations.
Scope of Services
|
Maintenance Type |
Services |
Service Period |
|
Routine Inspection and Maintenance |
Monitoring of operating parameters, lubrication maintenance, and inspection of wear-prone parts |
Daily / Weekly |
|
Regular preventive maintenance |
Valve maintenance, instrument calibration, and cold box seal inspection |
Quarterly / Semi-annually |
|
Annual Overhaul |
Distillation column inspection, heat exchanger cleaning, and compressor overhaul |
8,000 hours of operation per year |
|
Emergency Repair Services |
24-hour response, rapid diagnosis, on-site repair |
On call |
|
Specialized Technical Upgrades and Maintenance |
Implement energy-saving retrofits and automation upgrades during maintenance windows |
Customized to your needs |
Core Services
1.Distillation system maintenance: Inspection of the cold box, inspection and cleaning of tower internals, leak testing of the main condenser and evaporator, and pipeline stress testing to ensure that separation efficiency and product purity meet specifications.
2.Major overhaul of compressor units: Disassembly and inspection of steam turbine/electric motor-driven air compressors, oxygen compressors, and nitrogen compressors; non-destructive testing of impellers; replacement of bearing shells; repair of sealing systems; and dynamic balancing.
3.Expansion machine maintenance: Bearing replacement, inspection and repair of the nozzle adjustment mechanism, and optimization of the seal gas system to restore cooling capacity and operational efficiency.
4.Instrumentation and Control System Maintenance: Testing of DCS/PLC systems, verification of interlock protection, calibration of online analyzers, and functional testing of the SIS safety system to ensure precise and reliable control.
5. Maintenance of the pre-purification system: Replacement of molecular sieves, inspection and maintenance of the adsorber, and optimization of the regeneration process to ensure effective purification of the feed air.
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