Emission Standards for Oil-Containing Air

Background and Regulatory Significance of Oil-Containing Air

In industrial production, compressed air is widely used. However, if the compressed air contains excessive oil, it can not only compromise product quality but also cause damage to the environment and equipment. Therefore, establishing and enforcing stringent emission standards for oil‑contaminated air is of paramount importance.

Core Specifications: ISO 8573 Compressed Air Quality Standard

At present, the internationally recognized standard for compressed air quality isISO 8573Series. This standard provides clear grading criteria for solid particles, moisture, and oil content in compressed air.

• Class 0 (Level Zero): Typically, under 20°C conditions, the total oil content (including oil vapor, aerosols, and liquid oil) is required to be less than 0.01 mg/ m³, suitable for industries with extremely stringent air quality requirements.
• Class 1 To Class 6The oil content limits increase sequentially, allowing enterprises to select the appropriate grade based on their specific process requirements.

The primary hazards of excessive oil‑contaminated air

Substandard oily air emissions and their use can have a wide range of adverse impacts:

• Equipment damage: Oil can accumulate inside pneumatic components, causing valves to stick, seals to age prematurely, and maintenance costs to rise.
• Product contaminationIn industries such as food, pharmaceuticals, and electronics manufacturing, airborne oil contaminants can directly result in product nonconformity.
• Environmental risk: Direct discharge of oil-laden exhaust gases would pollute the atmospheric environment and violate relevantEnvironmental standards.

How to Meet Emission and Quality Requirements for Oil-Containing Air

In order to ensureCompressed airThe system complies with relevantEmission standards, enterprises need to adopt effective purification measures:

• Source control: Use an oil-free air compressor, or ensure that the lubrication system of an oil-lubricated air compressor is properly sealed.
• Multi-stage filtration: Equip the compressed air purification system with high-efficiency oil removal filters and adsorption units to eliminate liquid oil, oil mist, and oil vapor.
• Regular monitoring: Use specialized testing instruments to regularly measure the oil content in the air, ensuring it consistently meets quality standards.