Pharma forum 2018

For absolutely 100% oil-free compressed air, you need an oil-free compressor.  The basic principle of the oil-free screw compressor is same as for the oil-injected compressor. But as the name suggests, there is no oil injected during compression. The oil-free screw compressor element No oil means that there is no oil for sealing the rotors and for cooling the compressed air, elements and rotors. Because there is no oil for sealing, the rotors need to be very precise and have very small tolerances. The rotors don’t touch each other, but the air-gap between the two is very small (for optimal performance). The element is cooled by cooling water that flows through special pockets in the element casing. Of course this is less efficient as injecting relatively cold oil, and only the casing is cooled, not the rotors or the air itself. For this reason, the pressure ratio of the oil-free screw element is much lower compared to the oil-injected element. Remember, the pressure ratio

HEAT OF COMPRESSION TYPE DRYER http://www.beko-technologies.com/fileadmin/02_Produkte/02_03_Trocknung/02_03_06_Everdry/02_03_06_06_Everdry_HOC-P/hoc_p_function_en.pdf THEORY OF OPERATION In HOC type dryer, hot air at 120 degree celcius to 140 degree celcius from Compressor discharge is directly used for the desiccant regeneration. Running cost of this dryer is virtually NIL. It has two drying towers filled with the Activated alumina or Molecular sieve desiccant and they alternate in process every 4-hour automatically. Compressed air directly from air compressor discharge is taken to air dryer inlet through pipelines at 130 degree celcius (Min) temperature. This hot air is passed one drying vessel where saturated desiccant is regenerated by this high temperature air. After picking up moisture from bed, this air is cooled in an intermediate cooler. Here moisture is condensed and removed by an auto drain trap. At 40 degree celcius temperature this air passes through second dryin