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#1 milindns

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Posted 15 July 2014 - 10:36 AM

I am working in ethanol manufacturing plant from grain. our product ENA which is 68 % proof collected from bottom of simmering column operating at atmospheric condition and bottom temperature is 80 degree C i am confused about temperature 78 ¡èC is boiling point of ethanol then how ENA is in liquid state at the bottom of simmering column.please can any one improve my knowledge.

#2 Bobby Strain

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Posted 15 July 2014 - 11:16 AM

None of us know what you are talking about. Maybe you can pose your query without using acronyms. And we have no idea what a simmering column is.

 

Bobby



#3 Pilesar

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Posted 15 July 2014 - 12:14 PM

Consider that the pressure at the bottom of the column is higher than the pressure at the top of the column because the liquid in the column adds to the pressure. Recalculate your boiling point temperature at the higher pressure to check your composition. 


Edited by Pilesar, 15 July 2014 - 12:16 PM.


#4 PingPong

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Posted 15 July 2014 - 12:46 PM

our product ENA which is 68 % proof
Do you mean 68 proof, which is 34 vol%? Or do you mean 68 vol% (136 proof)?

 

Boiling point of pure ethanol is 78 oC, but boiling point of 34 vol% or 68 vol% ethanol is higher due to its water content.






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