Kremser Shortcut Method for Absorption and Stripping

A simple shortcut method for estimating the minimum absorbent or stripping agent flow rate is the Kremser method.
The following equations, due to Kremser, give the fraction not absorbed, , or not stripped, , as a function of the effective absorption, , or stripping factor, :
where and are the liquid and vapor rate down and up the tower and is the equilibrium constant of the key component (for example in the feed gas that is to be absorbed). Both equations assume that the key component mole fraction in the absorbent and stripping agent is zero.
This Demonstration plots these functions and allows the user to (1) vary the number of equilibrium stages, ; and (2) get values of the fraction not absorbed or not stripped for an effective absorption or stripping factor by simply clicking on the blue curve. The coordinates of the selected point on the curve will appear in black.



  • [Snapshot]
  • [Snapshot]
  • [Snapshot]


W. D. Seider, J. D. Seader and D. R. Lewin, Product and Process Design Principles, 2nd ed., New York: Wiley, 2004.
    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.

Mathematica »
The #1 tool for creating Demonstrations
and anything technical.
Wolfram|Alpha »
Explore anything with the first
computational knowledge engine.
MathWorld »
The web's most extensive
mathematics resource.
Course Assistant Apps »
An app for every course—
right in the palm of your hand.
Wolfram Blog »
Read our views on math,
science, and technology.
Computable Document Format »
The format that makes Demonstrations
(and any information) easy to share and
interact with.
STEM Initiative »
Programs & resources for
educators, schools & students.
Computerbasedmath.org »
Join the initiative for modernizing
math education.
Step-by-Step Solutions »
Walk through homework problems one step at a time, with hints to help along the way.
Wolfram Problem Generator »
Unlimited random practice problems and answers with built-in step-by-step solutions. Practice online or make a printable study sheet.
Wolfram Language »
Knowledge-based programming for everyone.
Powered by Wolfram Mathematica © 2017 Wolfram Demonstrations Project & Contributors  |  Terms of Use  |  Privacy Policy  |  RSS Give us your feedback
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to Mathematica Player 7EX
I already have Mathematica Player or Mathematica 7+