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This post was last edited by Ameba on 2016-8-17 at 10:33. Compressed air is a process gas with various applications, and it is widely used in industries and sectors such as petroleum, chemicals, metallurgy, power generation, machinery, light industry, textiles, automobile manufacturing, electronics, food processing, pharmaceuticals, biochemistry, national defense, and scientific research. During the production of compressed air, its temperature generally decreases over time. At first, the high temperature generated by air compression keeps the moisture in the air in a gaseous state; however, as heat exchange occurs with the surrounding environment during flow through the pipes, the compressed air gradually cools down. The lower the ambient temperature, the easier it is for water vapor in the compressed air to condense. When compressed air is released from the outlet during use, the pressure drops suddenly, the volume expands, and the temperature decreases, which causes the water vapor in the compressed air to condense further into water. The hazards caused by water in compressed air are mainly as follows: Condensation on pneumatic equipment can carry away lubricating oil, leading to reduced efficiency of the equipment or even its damage. Condensate can also accelerate the wear of valves in the pipelines. Condensate can also accelerate the wear of valves in the pipelines, leading to malfunctions or incorrect operation of the gas control equipment ； It causes rusting of pipes and equipment; if water accumulates at the lowest points of the pipes and freezes, there is also a risk of the pipes bursting. Water mist in the compressed air used for spraying can affect the adhesion of the coating to the workpiece, leading to coating failure. The hazards caused by oil vapor in compressed air to production: The oil contamination in compressed air comes from either the air itself or from the lubricants required to operate the air compressors used. When the compressor suffers severe wear or operates at high temperatures, lubricant can also mix into the compressed air, which causes many problems in the operation and maintenance of the equipment. If the oil vapor content in the air is too high and the air temperature during compression is high enough to exceed its explosive limit, an explosion or combustion will occur. Air spraying using oil-containing compressed air causes the coating film to shrink and develop an orange-peel appearance due to the interaction between the oil and the paint, which also reduces the gloss and durability of the coating film, severely affecting the quality of the coating. Therefore, before entering the manufacturing system, it is necessary to remove all moisture, impurities, oil, particles, and other contaminants from the compressed air, using pure compressed air to eliminate moisture, oil, and impurities present in it. High-efficiency precision filters and Betten module (core) dryers need to be installed at the rear end of the air compressor equipment in order to purify the compressed air. The high-efficiency precision filters are placed in front of the dryer and are used primarily to filter out larger particles and oil contaminants from the air, while the dryer is responsible for removing moisture from the compressed air. By supplying clean compressed air to the production equipment, production efficiency is greatly improved, the lifespan of the equipment is extended, and the product manufacturing process is enhanced, **resulting in cost savings for the enterprise.