-Separation of mixed solutions of acetic acid and formaldehyde
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Please help me, what separation method is more suitable for this stream? I want to get 98% acetic acid and dilute formaldehyde solution. Using ordinary distillation method, the energy consumption is too high. The reboiler load is 49000kW+. I want to reduce the energy consumption. Is there any good separation method?
It would be best to briefly describe the current process and see if there are any ways to improve it based on the existing process.
The components shown in the picture are the output from my previous separation tower. I need to separate this output into more than 98%wt acetic acid and formaldehyde solution. I am currently using the distillate from one tower, which can be separated, but the energy consumption is very high. I would like to know if there are any other methods for separating acetic acid.
Currently, a tower is used, the formaldehyde solution is evaporated from the top of the tower, and the acetic acid product is obtained from the tower still? This energy consumption is definitely relatively large, and multi-effect distillation can be used to reduce energy consumption.
What is multi-effect distillation? Should we use multiple towers or azeotropic distillation?
It is a multi-tower that utilizes energy in multiple ways. Currently, a tower is used, the formaldehyde solution is evaporated from the top of the tower, and the acetic acid product is obtained from the tower still?
The boiling point of formaldehyde is not low, right? It is best to conduct a distillation test to verify the energy saving point of view. You can consider double-tower pressure swing distillation.
Yes, it is just a tower at the moment. Can you give me some specific guidance?
Can you give me some specific guidance? or related information
This is not just a simple guide, it requires new equipment to save energy. If you really want to change it, you can contact me and I can provide a craft package.
Thin film evaporation devices and concentrated acid devices can be used. Electrical connection can be made if necessary.