Issues with the recovery of ethyl acetate and propylene along with water removal
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I’m new to the field of recycling. I would like to ask: if I want to reduce the moisture content of ethyl acetate and propylene obtained through distillation in the production workshop to below 0.1% or 0.3%, what other desiccants are needed? Thank you
The laboratory has tried magnesium sulfate, sodium sulfate, etc., but the results were not good. According to available information, calcium chloride cannot be used for drying. Our laboratory currently uses 4A molecular sieves to remove water, but these molecular sieves are expensive and difficult to activate later on
If you want to dry it, molecular sieves are the best choice
How can molecular sieves be activated further? We can’t just discard it after using it once; we rinse it with 6KG of steam, but the moisture can’t be completely removed
I’ve messaged you privately about using hot nitrogen for purging; you can add that WeChat contact, and I’ll recommend some professional technicians to you
A4 molecular sieve, activation: vacuum + high-temperature oil heating (>200°C). When using molecular sieves, it is essential to prevent the aggregation of peroxides!
Molecular sieves or membrane treatment could be considered