Development of energy-saving technology to dry compressed air in the compression process and preparation for use in industry and transport

In most technological cycles compressed air is used as often as electricity. Direct application of compressed air immediately after it leaves the different types of compressors and blowers, as a rule, is impossible, because it has not only elevated temperature and pressure, but also may contain significant amount of water vapours'. The problem of dry compressed air appeared along with the advent of compressors. The reason is that the compression of atmospheric air accompanied by an increase in border of saturation water vapours' at the same moisture content of the compressed air that leads to condensation. Therefore, the compressed-air drying is an important component in its preparation in accordance with the subsequent application. For a high degree of dehydration as a main component use zeolite as the adsorbent has high adsorption capacity towards water vapours', and as a protective layer using aluminum oxide, due to its resistance to drip moisture. The increase in adsorption capacity of the surface of the aluminum oxide will allow to use it as a main component, thereby reducing material costs. A possible solution to the problems with productivity and quality of drying compressed air does not require significant material costs, is the use of more efficient alumina adsorbents and new competitive technologies of energy-efficient loading of adsorbents in industrial adsorption columns. The paper proposes an ecologically safe optimal technology for the production of aluminum oxide, based on rapid thermal treatment of hydrargillite in the drum-type reactor "CEFLAR". To improve the adsorption characteristics, it is proposed to use alkaline ions, the presence of which on the surface of aluminum oxide leads to an increase in the adsorption capacity with respect to water vapours'. This allows the development of high-performance alumina adsorbents with improved functional properties.

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