Precautions for the use of adsorption dryer accessories
The oil content of the inlet air of the adsorption dryer should be controlled below 0.01PPM. Since it is impossible for an oil-free air compressor to be completely oil-free, in order to prevent the accumulation of trace amounts of oil in Adsorption dryer accessories the adsorption bed (this accumulation is very fast), a degreaser needs to be installed at the inlet of the dryer. Regenerative dryers should be used at rated temperature and pressure. When the inlet temperature of the adsorption dryer accessories is high or the inlet pressure is lower than the rated value, capacity correction should be performed.
When a small heat storage dryer is used with a piston air compressor, a pressure regulating storage tank should be installed in front to eliminate the high-speed impact of pulsating airflow on the adsorbent. Avoid deliberately "saving energy" to reduce regeneration gas consumption (including regeneration gas volume and heating power); when there is an "air dryer front end", as long as the site permits, the connection between the micro-heat regeneration suction dryer and the air dryer should be installed as far apart as possible to reduce air pressure drop and improve air ventilation conditions dryer, for Adsorption dryer accessories daily maintenance and inspection.
From a formal point of view, the micro-heat storage dryer also heats the regeneration gas, but because the regeneration gas used is dry air with low water content, it is also a "pressure swing adsorption" dryer.
Traditionally, adsorbents, controllers, valves, and silencers are collectively referred to as the four easily damaged parts of adsorption dryer accessories.
①As the main body of adsorption dryer accessories, the adsorbent is often affected by pressure, water vapor, and heat, and is easily mechanically damaged and scaled by the medium, causing the performance of the adsorbent to deteriorate. Due to the replacement of activated alumina for silica gel as the main adsorbent, this Adsorption dryer accessories has greatly improved various performances, especially the compressive strength and water immersion resistance have reached a high level. As long as there are no operating factors such as "insufficient regeneration energy consumption", the dew point of the compressed air after treatment with activated alumina can stably reach -40℃, and the service life can reach more than 2-3 years.
②In adsorption dryer accessories, the controller is the command center of the adsorption dryer. With the development of auxiliary electronic technology and the widespread application of PLC technology, the early electromechanical control has made a qualitative leap in control accuracy and reliability. In addition to the further improvement of the anti-interference and overload capacity of the heating regeneration components, other control components are no longer easily damaged parts.
③Control valves are components that are easily damaged in adsorption dryer accessories. Frequent switching and long-term mixed intrusion of water and adsorbent are important reasons for valve leakage.
④The silencer is a component that is prone to malfunction in adsorption dryer accessories, mainly because the exhaust channel of the silencer is blocked. Once the silencer has a problem (blocking), it is fatal to the entire machine, which will lead to a decrease in the regeneration performance of the adsorbent and premature aging. Therefore, the silencer is the daily maintenance of adsorption dryer accessories.
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