Why can’t we use the compressed gas discharged by the air compressor directly?

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This post was last edited by Bao’s Purification on 2021-5-10 09:53. Why can’t we use the compressed air produced by an air compressor directly? Air is compressible; when an air compressor reduces the volume of air and increases its pressure, the resulting air is called compressed air. Air contains water, in the form of mist, water vapor, and condensed water. Air that contains a certain amount of water vapor is called moist air, while air that contains no water vapor is called dry air. The air around us is all humid air. At a certain altitude, the components and proportions of dry air remain essentially constant; it has no special significance for the thermal properties of the entire moist air. Although the water vapor content in moist air is not high, changes in this content have a significant impact on the physical properties of the moist air. The amount of water vapor determines the degree of dryness or humidity in the air. When moist air is compressed, the density of water vapor increases and the temperature rises as well. When compressed air is cooled, its relative humidity increases. As the temperature continues to drop until the relative humidity reaches 100%, water droplets form within the compressed air; this temperature is known as the \"pressure dew point\" of the compressed air. Oil in the air, including the hazards of oil contaminants and oil vapors: Compressors that use oil for lubrication contain oil in their air due to the contact between air and oil during the compression process. Even with the use of oil mist separators, it is not possible to remove all the oil; typical oil mist separators can keep the oil content in the air at levels between 3 ppm and 6 ppm. Why is it necessary to remove water from compressed air, as well as to purify and filter it? 1. The quality of compressed air has a direct impact on the quality of products, especially in industries such as pharmaceuticals, food, precision electronics, and textiles. 2. Filtering precision for general machinery and general pneumatic circuits