SINGLE-STAGE AND MULTISTAGE MASS TRANSFER: SIMPLE RATE-BASED ANALYTICAL SOLUTION

Abstract

An analytical solution to steady-state mass transfer in a binary system, of general application in mass transfer processes, was found by straightforward mathematical analysis. The analysis resulted in simple closed-form equations that define single-stage and multistage mass transfer, for cross-flow and co-current flow, entirely as expressions of the transfer unit concept. The traditional equilibrium stage and efficiency model is not validated by the analysis.

Keywords:

• Analytical solution
• General application
• Rate-based
• Simple closed-form equations
• Single-stage and multistage

Acknowledgment

To Francisco J. Sosa Sánchez, a friend and fellow chemical engineer, whose calculations were instrumental in the identification of the correct train of thought.