Document Type
Thesis
Date of Award
6-30-1966
Degree Name
Master of Science in Chemical Engineering - (M.S.)
Department
Chemical Engineering and Chemistry
First Advisor
John E. McCormick
Second Advisor
Robert M. Casciano
Third Advisor
Jerome J. Salamone
Abstract
This thesis presents new equations for predicting degree of separation on a distillation plate, recognizing non-constant molal flow effects. A FORTRAN program is included for solving the new equations. Experimental runs were made for comparison to theoretical predictions.
First an equation is derived for predicting separation at a point on a distillation plate. The derivation is analogous to Murphree's point efficiency equation except that the effects of flow between phases are included by applying the Colburn-Drew theory. Finally, an overall plate separation equation is derived analogous to the A.I.Ch.E. eddy diffusion model for Murphree plate efficiency, except that the rate of flow between phases is included in the differential material balance.
Data were taken at varying degrees of condensation on a distillation plate for the system water-toluene. Conclusive proof on the validity of the equations could not be drawn from the data due to sample contamination and analytical inaccuracy. The data do, however, exhibit a definite trend in the direction predicted by the new equations.
The new equations are recommended for use on the basis of their being derived on a more fundamental basis than the Murphree point and plate efficiency equations. The same basic data are used as in predicting Murphree efficiencies and thus the new technique offers the advantage of giving a more fundamental prediction without needing any additional information about the particular system involved.
Recommended Citation
Niedzwiecki, Joseph Lawrence, "Effects of non-constant molal flow on distillation plate separation" (1966). Theses. 2766.
https://digitalcommons.njit.edu/theses/2766
