Features of adsorption dryers, explained by an adsorption dryer accessories manufacturer
Adsorption dryer parts The manufacturer believes that in modern manufacturing, continuous and stable, up-to-standard compressed air is a basic guarantee for safe production, and adsorption dryers play a crucial role in the drying and purification of compressed air. Therefore, the daily maintenance of adsorption dryers is a basic measure to provide continuously stable, up-to-standard compressed air, directly affecting the quality of compressed air and safe production.
1. The adsorption dryer parts manufacturer believes that an adsorption dryer is a mechanical device with pneumatic actuators, and it experiences mechanical wear. Therefore, it is necessary to regularly replace the consumable parts of the adsorption dryer to ensure its safe and stable operation.
2. Filter elements and oil content are three harmful substances in compressed air: water, oil, and dust, which are intercepted and separated. Replacing the filter elements and oil content is required approximately every 8000 hours, otherwise a significant pressure drop will occur.
3. The main adsorbent in an adsorption dryer is alumina or molecular sieve. Water and oil in compressed air will affect the adsorption efficiency of the adsorbent, and after prolonged adsorption and regeneration, the adsorption capacity of the adsorbent will decrease. Therefore, in order to guarantee the drying effect of the dryer, the adsorbent needs to be replaced regularly.
Adsorption dryer parts The manufacturer believes that adsorption dryers achieve the drying effect through "pressure changes" (pressure swing adsorption principle). Obviously, the working pressure is a very important factor for the normal operation of an adsorption dryer. In addition to working pressure, factors such as inlet air temperature, condensate water, oil mist, and regeneration gas volume also have a significant impact on the normal operation of the dryer.
The adsorption dryer parts manufacturer believes that the working pressure of the adsorption dryer:
(1) The saturated water content of compressed air is inversely proportional to the pressure, i.e., the lower the working pressure, the greater the humidity load on the adsorption dryer, and therefore the greater the demand for regeneration gas.
(2) The adsorption dryer parts manufacturer believes that it is known from the structure of the dryer that the regeneration air is determined by the opening of the orifice plate or ball valve and the pressure difference between the two sides. Under the condition of a fixed flow area, the amount of regeneration gas flowing through the orifice plate or ball valve is proportional to the pressure. A decrease in working pressure will lead to a reduction in regeneration gas, thus reducing the regeneration efficiency of the adsorption dryer and affecting the adsorption efficiency.
(3) The volume of compressed air is inversely proportional to the pressure. Lower working pressure increases the flow rate of compressed air in the empty tower, shortening the contact time between the adsorbent and the compressed air, resulting in a decrease in dynamic adsorption capacity.
(4) Due to the increased empty tower pressure drop and flow rate, the pressure loss of the adsorption bed increases.
Adsorption dryer parts The manufacturer believes that the compressed air entering the dryer is saturated air with a certain temperature. Under the same pressure conditions, for every 5℃ increase in temperature, the saturated water content increases by about 30%, i.e., the humidity entering the adsorption dryer increases by about 30%. In addition, the adsorption capacity of the adsorbent decreases with increasing temperature, so the drying efficiency of the adsorption dryer decreases as the inlet temperature of the compressed air increases. For every 5℃ increase in inlet temperature, the outlet dew point of the finished gas will increase by 8~10℃. Therefore, reducing the inlet temperature as much as possible is beneficial to the adsorption dryer.
Contact Information
200 meters east of Zhangjiawan Lishan Temple Village Committee, Tongzhou District, Beijing
