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The issue of molecular sieve dehydration: is it possible to reduce water levels from 5000 ppm to 500 ppm?

2021-06-25View Original

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Our company is engaged in the recycling of waste organic solvents. Our current product is propylene glycol methyl ether, with a water content of 0.5%; we would like to reduce this water content to 500 ppm. I was wondering if molecular sieves can be used for this purpose, and if there are any manufacturers that supply complete systems for this task.
Reply #22021-06-25
This post was last edited by qugd on 2021-9-26 at 15:25. A properly activated molecular sieve should be fine. However, for the operation of dehydrating organic solvents, weather factors (atmospheric humidity) are very important.
Reply #32021-06-25
This post was last edited by Dariga on 2021-6-25 21:28. Are there any other methods? For example, chemical methods. Activating molecular sieves is rather troublesome. Molecular sieves are generally used for trace amounts of water, at the ppm level.
Reply #42021-06-26
Perhaps equipment similar to vacuum spray drying could be considered
Reply #52021-06-28
Does vacuum spray drying take up a lot of space?
Reply #62021-07-05
Have you come across any related cases? I would appreciate some guidance.

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