Less than how much content can be said to be oil-free compressed air

In the industrial field, when the oil content in the compressed air is ≤ 0.01 mg/m & sup3;(or 0.01ppm), it is usually called oil-free compressed air. This standard is based on international and domestic industry norms and takes into account the strict requirements of different application scenarios, as follows:

1. international standards and industry norms

1. ISO 8573-1: This standard is the core specification of the international compressed air quality level, which clearly divides the oil content of compressed air into multiple levels. For oil-free compressed air, it is usually required to reach Class 0, I .e. oil content ≤ 0.01 mg/m & sup3;. This level represents the highest purity of compressed air and is suitable for applications that are extremely sensitive to oil contamination.
2. Other international norms organizations such as the American Compressed Air and Gas Association (CAGI) have developed similar compressed air quality standards, where the oil content requirements for oil-free compressed air are generally consistent with the ISO 8573-1 standard.

2. domestic standards and industry practices

1. national Standards china has also formulated corresponding compressed air quality standards, such as GB/T 13277 "compressed air part 1: pollutant purification level" and so on. These standards are in line with international standards in terms of oil content, and usually also define the oil content of oil-free compressed air as ≤ 0.01 mg/m & sup3;.
2. Industry Practice: In glass, food, medicine, electronics and other industries that require extremely high compressed air quality, oil-free compressed air has become standard. These industries often require very low oil content in compressed air to avoid the impact of oil pollution on product quality and production environment. For example, in the glass industry, oil-free compressed air is used to drive pneumatic equipment, pipeline maintenance and cleaning, and water treatment assistance to ensure the purity and stability of the production process.

Application Scenarios of 3. Oil-free Compressed Air

1. food Industry in the process of food packaging, processing and transportation, oil-free compressed air can prevent oil from contaminating food and ensure food safety.
2. Pharmaceutical industry: In the process of drug production, packaging and transportation, oil-free compressed air can avoid oil pollution of drugs, ensure drug quality and patient safety.
3. Electronic industry: In precision manufacturing processes such as semiconductor manufacturing and electronic component assembly, oil-free compressed air can avoid damage to electronic components caused by oil pollution and ensure product quality and performance.
4. Glass industry as mentioned above, the glass industry requires extremely high cleanliness of compressed air. Oil-free compressed air can ensure the purity and stability of the production process and avoid oil pollution affecting the quality of glass products.

4. Technical Means of Realizing Oil-free Compressed Air

1. use oil-free compressor: Oil-free compressors do not use lubricating oil in the compression process, so the compressed air produced naturally does not contain oil. This is the most direct and effective way to achieve oil-free compressed air.
2. Equipped with efficient oil separator: For scenarios where an oil compressor is used, an efficient oil separator can be equipped to reduce the oil content in the compressed air. However, this method usually cannot meet the standard of oil-free compressed air and can only be used as a transitional solution.
3. Regular inspection and maintenance: No matter what type of compressor is used, it is necessary to regularly check the oil content of the compressed air, and carry out corresponding maintenance and treatment according to the test results. This ensures that the quality of the compressed air always meets oil-free standards.