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Pump Around And Internal Reflux Loops


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#1 Venkat @89

Venkat @89

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Posted 31 July 2023 - 07:50 AM

Dear all,

We see distillation columnn with side draws, Distillate and Bottom product, even without pump around loop and internal reflux control loops.

Some distillation columns with Pump around loop and Internal reflux control loops.

May I know, What is the final basis for choosing pump around and Internal reflux loops in the distillation columns?

#2 shvet1

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Posted 31 July 2023 - 11:56 PM

A feasibility study of options available.

https://en.wikipedia..._rate_of_return

For a guide see para. 2 Kister's Distillation Design



#3 breizh

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Posted 01 August 2023 - 06:08 AM

Hi,

My answer will be Capex and technical challenges.

I had experience with columns working under vacuum where the melting point of the overhead product was above 150 C, even 170C. The condensers were above the columns, total condensers and the distillate was collected on the side of the columns.

Breizh 






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