There are 2 kinds of pollutants in the compressed air, one is the atmospheric pollutants sucked into the air compressor, 80% of which are under 2um in diameter, and the other is the compressor brought out the oil in the form of smoke, and then spread out to become a 0.01-0.0um aerosol. In this way, all the pollutants will be mixed with the pipeline in the spoils, the formation of rust spots, solid particles and latex emulsion. If this unclean compressed air is directly applied to occasions or places with high requirements for air quality without any effective removal means, it will pollute the production environment and even damage the equipment. Therefore, in order to avoid the waste of manpower, financial resources, time, it is necessary to fully understand the system pollution status, the compressed air system used to reasonably configure the dust removal, oil removal, drying and other purification facilities, to achieve the optimization of clean compressed air supply system.
Compressed air filter classification and principle
General nature of the filtration, can remove most of the liquid and solid particles, the size of which is generally greater than 1 um. To remove very small solid particles and oil and water aerosols, it is necessary to use high-performance filter. However, in terms of its methods and mechanisms, can be divided into gravity separation, centrifugal separation, inertial impact, direct interception, Brownian motion, thermal cohesion and so on.
Compressed air dryer device and principle
Currently, China's production and use of compressed air drying device is mainly adsorption and refrigeration type two. Adsorption type is the silica gel, aluminum glue, molecular sieve and other adsorbents loaded in the two dryer, when the gas passes through the dryer, adsorption of desiccant moisture adsorption down, so as to achieve the purpose of drying. Refrigeration is the use of Freon refrigeration in the form of condensation of moisture in the air to separate out, so as to achieve the effect of drying (water removal).
Adsorption type drying device adsorbent in the work, the need for activation (water absorption) adsorbent regeneration. The form of regeneration is divided into: heatless regeneration, heating regeneration. Heating regeneration is divided into external heating regeneration, internal heat regeneration, waste heat regeneration, micro-thermal regeneration and other forms.