What is the oil content of industrial compressed air in general

Oil content standards for industrial compressed air vary by industry and application scenario, the national standard for ordinary air compressors stipulates that the liquid oil content shall not exceed 5 mg/m & sup3;, the oil vapor content shall not exceed 0.5 mg/m & sup3;; However, high-demand industries such as medicine, food and electronics usually require oil content ≤ 0.1 mg/m & sup3;, some scenes even need to reach level 0 standard (≤ 0.01 mg/m & sup3;). The following are specific instructions:

1. oil content standards for different industries

1. common Industrial Scenarios the national standard stipulates that the liquid oil content in compressed air shall not exceed 5 mg/m & sup3;, and the oil vapor content shall not exceed 0.5 mg/m & sup3;. This standard is suitable for conventional industrial applications that do not require high oil content, such as pneumatic tools and spraying.
2. Pharmaceutical, food, electronics industry: These industries have extremely high requirements for compressed air quality, usually requiring oil content ≤ 0.1 mg/m & sup3;. For example, the Chinese Pharmacopoeia and GMP standards clearly stipulate the oil content limit of medical compressed air to ensure product safety and quality.
3. Special scenarios such as breathing gas and electronic chip manufacturing: These scenarios have more stringent requirements for oil content, usually meeting the level 0 standard (≤ 0.01 mg/m & sup3;). Level 0 standards are established by the equipment user or manufacturer and certified to ISO8573-1 international industry grade standards.

Influence of 2. oil content exceeding standard

1. equipment corrosion: After the oil is combined with moisture and impurities, it will accelerate the corrosion process inside the equipment and shorten the life of the equipment.
2. Gas path blockage: Oil accumulates in the pipeline, which may form grease or ice blockage and affect airflow smoothness.
3. Decreased product quality in the electronics, food, pharmaceutical and other industries, oil may contaminate the product or affect the accuracy of the process. For example, in electronic chip manufacturing, oil may cause chip surface defects; in food processing, oil may affect food taste and shelf life.

3. Measures to Reduce Oil Content

1. selection of high quality air compressor: Oil-free air compressor or micro-oil air compressor can significantly reduce the oil content in compressed air. For example, oil-free air compressors avoid oil pollution through special designs (such as ceramic screw rotors) and provide high-quality oil-free compressed air.
2. Configure efficient post-processing equipment: After-treatment equipment such as coalescing filters and activated carbon adsorption tanks can further remove the oil in the compressed air. For example, professional oil removal equipment such as oil-free catalytic machines and activated carbon adsorption tanks can ensure that the compressed air reaches the level 1 oil content standard (≤ 0.01 mg/m & sup3;).
3. Strengthen daily maintenance and management regularly replace the oil core, air filter and lubricating oil to ensure the filtering capacity of the equipment; clean the cooler to improve the heat dissipation efficiency; avoid adding excessive lubricating oil or mixing different brands of lubricating oil.