I have a question regarding methanol distillation
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I have a question: The sampling point for the product taken from our plant’s atmospheric pressure tower is located after the tower top cooler. Why can’t samples be obtained when the water supply valve is opened wide, but samples can be obtained when the valve is closed a little?
What about the pressure in the atmospheric tower? Is there negative pressure? Or is the pressure extremely low? If that’s the case, it’s possible: by closing the inlet valve, the temperature rises, and as a result the pressure at the sampling point also increases, allowing fluid to come out. On the other hand, if the inlet valve is left open wide, the cooling temperature is lower and the pressure is lower; coupled with the fact that the pressure inside the tower isn’t high, there is a possibility of air being drawn into the sampling system
This post was last edited by hcandre on 2012-6-17 00:24, edit 1. Adjusting the temperature should involve adjusting the return water valve, right? 2. It can be taken directly behind the cooler; if the condensation effect is good and the pressure at the top of the tower is negative, it may not be possible to obtain it.