Air compressors are very important equipment in modern industrial production, and are widely used in air separation oxygen production, metallurgy, petrochemical, pharmaceutical, food, paper, glass and other industries. In order to obtain gas with different pressure levels, the compressor is often divided into several stages, and the gas pressure is increased step by step. In order to achieve isothermal compression between the stages, the interstage cooler must be used to reduce the temperature. The gas temperature can generally be reduced from 170°C-140°C to 40°C, and the heat exchange medium is generally water/gas exchange.
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