Special Environment Air Compressor Selection Guide- CHANUN Air Compressor
Release time:
2025-07-03
Special Environment Air Compressor Selection Guide
Core Considerations
Environmental Corrosiveness: Material Selection is the Lifeline
Coastal Areas, Chemical Plants: 316L stainless steel airend is mandatory; ordinary carbon steel equals "slow suicide" (rapid corrosion damage).
Strong Acid Mist Environments: Heat exchanger surfaces must utilize corrosion-resistant coatings like PTFE (Polytetrafluoroethylene).
Saline-Alkali Dust Areas: The entire unit's protection rating must reach IP66 or higher, absolutely preventing dust and moisture ingress.
Temperature & Humidity Extremes: Dual Test of Performance and Startup
High-Temperature Environments (Above 40℃): For every 5℃ temperature increase, actual air delivery decays by approximately 3%. Additionally, reserve over 10% extra cooling capacity.
Extremely Cold Environments (Below -20℃): Preheating modules are essential to ensure normal startup. Oil circuits, air circuits, and water circuits all require freeze-proof design.
High-Humidity Environments: Enhance oil-water separation design to prevent liquid water entry into the system, and focus on electrical moisture protection.
Explosion-Proof Safety Level: The Red Line Within the Red Line
Coal Mines: Units must possess "EX d I Mb" explosion-proof certification; others are unusable.
Petrochemical Plants, Oil Depots, etc.: Must comply with ATEX Cat.2G (or equivalent national standard).
High-Concentration Dust Workshops: Units must be equipped with effective static electricity dissipation devices and structures meeting dust explosion-proof requirements.
High-Altitude Adaptability: Dual Compensation for Power and Cooling
For every 1000 meters increase in altitude, air thins and cooling efficiency decreases.
For operation at 3000 meters altitude, compressors require over 30% reserved power margin and must be paired with enhanced cooling systems.
Key Parameter Precision Calculation: Eliminate Margin Risks
Operating Condition Air Demand: Multiply the rated flow by the altitude correction factor (typically >1) and the operating safety factor (typically 1.1-1.2) to obtain the actual required air volume.
Pressure Band Margin: Account for pressure losses in long-distance piping or purification processes. E.g., in chemical plant piping systems, endpoint pressure requires an additional 0.2MPa reserve margin above rated pressure.
Start/Stop Frequency: Frequent starts/stops like in mines? Select models designed for high start/stop cycles, and strictly control daily start/stop counts (e.g., ≤15 times).
Key Component Reinforcement: Tailored Protection
Air Intake Filtration: In desert/high-dust areas, dual-stage cyclonic pre-dust removal + high-efficiency main filter is standard.
Cooling System: In high-temperature environments, water-cooled plate heat exchangers + auxiliary air-cooling systems provide "dual insurance".
Drive Motor: For high altitudes, use motors specifically designed for high altitudes (Class H or F insulation) to ensure insulation performance and heat dissipation.
Safety Protection System: Building an Impregnable Fortress
Case: An oil field explosion caused by equipment static electricity accumulation resulted in losses exceeding RMB 6 million! Warning: Safety is no trivial matter!
Standard equipment of intrinsically safe (or flameproof) control cabinets.
Strictly ensure the overall equipment grounding resistance is < 4Ω.
The core unit itself must hold authoritative explosion-proof certification valid for the specific environment (e.g., ATEX, IECEx, National Standard Ex).
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