Jump to content



Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog

0

Designing An Ethanol Distillation Column (Laboratory Scale)

distillation ethanol distillation column distillation column design tray selections valve tray column calculations

3 replies to this topic
Share this topic:
| More

#1 Hacheeez

Hacheeez

    Brand New Member

  • Members
  • 3 posts

Posted 25 May 2018 - 12:28 PM

Hi,

I need help in designing a small scale ethanol distillation column. I'm not sure on what steps and calculations to follow. I have only decided to use valve trays. It would be a great help if someone could guide me on how to do the design calculations.

 

Thanks in advance

Jay.


Edited by Hacheeez, 25 May 2018 - 12:29 PM.


#2 Bobby Strain

Bobby Strain

    Gold Member

  • Members
  • 2,727 posts

Posted 25 May 2018 - 02:16 PM

You're in real trouble. You ask us to provide you with a tremendous amount of information.

 

Bobby



#3 Hacheeez

Hacheeez

    Brand New Member

  • Members
  • 3 posts

Posted 27 May 2018 - 12:35 AM

You're in real trouble. You ask us to provide you with a tremendous amount of information.

 

Bobby

Hello Bobby,

 

I apologize if I have asked somewhat of a broad question. I'm already familiar with most of the design calculations. I've used the McCabe-Thiele's method to find the number of stages (trays) required, the diameter of the column using the input flowrate of steam from the reboiler and i'm in the stage of slightly modifying the valve tray design to fit this system setting.

For me to run a simulation of ChemCAD, I need to know certain parameters such as the operating pressures of the input feed and inside the column (top and bottom), the flowrates (feed and downcomer) and the reflux ratio. It would be a great deal of help if someone could provide me an idea about this and if there are more necessary calculations to be made.

 

Thank you,

 

Jay.



#4 katmar

katmar

    Gold Member

  • ChE Plus Subscriber
  • 611 posts

Posted 30 May 2018 - 10:47 AM

Unless you have a very big laboratory, valve trays are not a good choice.  It would probably be better to use a packed column.

 

It is not possible to use the McCabe-Thiele method unless you have already specified the pressure and reflux ratio.






Similar Topics