The ethanol content in the methanol distillation product is high; how to adjust it?

I’m also very troubled by this issue, but let me share my own views first. I hope this helps you. I think the most fundamental thing is to reduce the ethanol content in crude methanol; the composition of the synthesized gas must be carefully controlled. Next, regarding distillation: the amount of extraction water should be increased appropriately to keep the content of residual water at around 16; the purity at the bottom of the pressure column should be improved to around 70, and the reflux ratio of the pressure column should be increased accordingly. The side-stream draw from the atmospheric tower should be increased appropriately. The most effective method is still to use side lines for production. Additionally, the amount of secondary cooling recovery from the pre-tower that enters the system can be reduced.

We have learned about it; currently our production processes meet the requirements mentioned above, but the ethanol content is still a bit high

Ethanol is considered a higher-boiling component compared to methanol; therefore, to reduce its content during operation, it is necessary to increase the reflux ratio and raise the amount taken off via the side stream. Additionally, an analysis of the ethanol content in crude methanol was conducted to see if there are any significant changes. I hope this can help you.

Control the temperature of the atmospheric pressure tower and increase side extraction

It would be best if the information provided were more detailed. We are a professional distillation company in Yantai, and we can try to help you analyze it! 15753506807

Do your towers have trays? Our pure packing towers do not have side sampling

We have a atmospheric column with side extraction in our floating valve tower. The separation efficiency of pure fillers should be very good; cases of ethanol excess like this should occur rarely.