Regenerative adsorption dryers generally use activated alumina and molecular sieves as adsorbents. Generally speaking, activated alumina and molecular sieves should be replaced after about two years of use. Below, the editor sorts out the matters needing attention and the operation process for replacing the adsorbent of the adsorption dryer.
Regenerative adsorption dryer
Before understanding the replacement of the desiccant of the regenerative adsorption dryer, let's first understand the advantages and disadvantages of these two adsorbents. The adsorption performance of activated alumina is very strong and stable, it will not deliquesce when it encounters moisture, and has high crushing strength and abrasion resistance, and has a wide range of applications; molecular sieves have good drying performance when the relative humidity is below 20%, often Use only as a desiccant for deep drying.
The following points should be paid attention to when replacing the adsorbent of the regenerative adsorption dryer:
(1) Filling the adsorption tower must be packed densely without gaps to prevent the alumina and molecular sieves from being pulverized and broken by mutual friction.
(2) Regenerative adsorption dryer There are many combinations of filling alumina and molecular sieves. If possible, it is recommended to fill inert alumina ceramic balls at the bottom of the adsorption tower to protect the alumina and molecular sieves. It is also possible to fill molecular sieves in the middle and alumina at both ends.
(3) Regularly replace the filter element and supporting accessories, check whether the pipeline is blocked, and prevent the oil and water from flowing back to the adsorption tower to cause pulverization of alumina and molecular sieves.
Users must pay attention to replace the desiccant of the adsorption dryer in time, and do not use the adsorbent beyond the time limit. Extended use will cause the adsorbent to lose its activity, which will greatly affect the drying effect of the adsorption dryer. (4) Refuse to regenerate synthetic products. Replacement of regenerated synthetic products is easy to cause pulverization and breakage, which seriously affects the operation and life of the equipment. It is necessary to choose the adsorption dryer adsorbent produced by regular manufacturers.
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