3 replies to this topic

[Amyyy]

Hi

For my project, i am designing a stripper column to strip condensate from methanol and other impurities.. the only information i am given is the inlet flow rate. i am using reboiled stripper to save costs and inserting steam into reboiler from Boiler feed water at 120C .. I need to work out the amount of steam i need and number of stages for the column by drawing the VLE curve of mole fraction of vapour vs liquid .. i don't know how it done!!

[ankur2061]

amira,

There are several methods for determining the number of theoretical Stages of a column given the VLE data, two of them are Fenske-Underwood and McCabe-Thiele.

You need to go through the distillation section of your basic engineering texts such as "Unit Operations of Chemical Engineering" by McCabe & Smith, "Mass Transfer" by Robert E. Treybal and Coulson & Richardson, Volume 2.

Some excellent web resources on the basics of distillation are available at:

http://lorien.ncl.ac...Cabe/basics.htm

http://lorien.ncl.ac...til/distil0.htm

A excel calcualtor based on the above mentioned methods is available on Cheresources at:

http://www.cheresour...ges-calculator/

Regards,
Ankur.

Edited by ankur2061, 02 February 2012 - 07:57 AM.

[Amyyy]

there is no reflux so Fenske and Mcabe can not be used

[Arpit_Jain]

This may help

 air stripper.pdf   248.88KB   219 downloads