Distillation position
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Dear experts and fellow engineers, I would like to know the relationships between various variables in distillation operations, such as the top temperature, reactor temperature, reflux ratio, product withdrawal rate, reactor pressure, and top pressure. For example, what happens when the reactor pressure increases… or decreases? I hope to get honest answers from everyone.
You can take a look at the principles of chemical engineering to understand the relationship between pressure, boiling point, and pressure difference! Simply put: For example, if the pressure in the reactor increases, the temperature at the bottom of the tower will rise. This is because the boiling point increases with rising pressure. Another reason for the increase in temperature at the bottom of the tower is that the composition of the mixture changes, with more substances having higher boiling points present! As for why the boiler pressure rises? First, check the peak pressure; second, check the feed rate (that is, the change in load)!
These things cannot be generalized, just like the rigid provisions of legal regulations that remain unchanged. These parameter changes need to be explored and summarized through practical work; since the production conditions of various devices vary, the situations differ as well. You can search on Haichuan for posts about distillation; there are many of them, so go through them and understand the concepts gradually on your own.
Building on the summaries of those who came before and putting this into practice – isn’t that quite difficult? And does it also enable theory and practice to move forward in tandem?
Read more on the principles of chemical engineering and it will become clear
Practice is more important! There are still many problems with this batch distillation operation