Recommendations for thin-film evaporators for DMF recovery
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I would like to ask my friends: which companies in China are good at producing film evaporators for DMF recovery? Please give some recommendations.
It’s best to be a well-known company with strong capabilities
The product we obtain after synthesis is soluble only in DMF; its operational temperature cannot exceed 40°C, and the DMF must be recovered for reuse. The boiling point of DMF at atmospheric pressure is 153°C. The current feasible process involves using a thin-film evaporator under high vacuum (possibly at three stages). Is there any better way to achieve this?
Molecular distillation can be considered, featuring high vacuum, low temperature, and short residence time. The key focus for addressing the residence time in your operating conditions is to increase the vacuum level; a higher vacuum reduces the boiling point of DMF, but this is also limited by the performance limits of the vacuum pump.
I also found information on the supergravity bed separation process on this forum. I’m not sure whether this process is mature enough to meet our requirements; has anyone used it?