For analysis of the foaming in distillation and absorption tower the simulated distillation in a sieve tray column was performed. The 2 inch-diameter sieve tray was used. Foam height was measured for various air flow and liquid flow rates. Foam height data were correlated by dimensional analysis. The physical properties such as surface tension, density and viscosity and the operating such as vapor velocity and liquid flow rate were used as variables. The results of dimensional analysis show that the foam height could be expressed as a function of Weber number and Reynolds number.