Oil Purifier Degassing: Essential Guide & Selection Tips

Degassing is a core function of professional oil purification systems, though its sophistication varies by equipment type. This guide explains its importance and how to choose the right technology.

1. Why Degassing is Critical

Gases in oil—as dissolved molecules or free bubbles—cause significant damage:

• Insulation Failure: In transformer oil, bubbles reduce dielectric strength, risking partial discharge and failure.

• Accelerated Oxidation: Oxygen degrades oil, increasing acidity and sludge.

• System Damage: Causes cavitation, noise, pressure instability, and component wear in hydraulic/lube systems.

• Reduced Cooling: Bubbles impair heat transfer in transformers and heat exchangers.

2. How Oil Purifiers Remove Gas

Primary Method: Vacuum Separation

Oil is sprayed into a vacuum chamber. Under low pressure, gas solubility drops, releasing dissolved and free gases extracted by a vacuum pump. Often combined with heating.

Advanced Methods:

• Deep Vacuum Degassing: Multi-stage systems achieve ultra-low gas (<0.5%) and moisture (<10 ppm) for critical oils like transformer fluid.

• Thin-Film Degassing: Maximizes surface area in a vacuum for high-efficiency gas removal.

3. Equipment Comparison: Degassing Capability

4. How to Choose: 3-Step Checklist

1. Identify Need: Oil type (e.g., transformer, hydraulic) and target system.

2. Define Standards: Required gas content (%), moisture (ppm), and air release value.

3. Check Specs: Ensure the machine lists:

   • Vacuum pump & separation chamber

   • Working vacuum level (e.g., ≤1 mbar)

   • Certified output (e.g., "gas content ≤0.1%")

Key Takeaway

Degassing is integral to vacuum oil purifiers, not basic filters. For reliable protection, ｓｅｌｅｃｔ equipment with proven degassing specs matching your oil and system requirements. Always verify performance data before purchase.