HEAT AND MASS TRANSFER IN THE PROCESS OF RECTIFICATION ACCORDING TO THE INTERNAL ENERGY SAVING THEORY

The internal energy saving theory accounting for a multiple vapor condensation on the fractionating column trays is presented. The heat and mass transfer occurring on the trays is analyzed in terms of the law of thermodynamics. A formula for a quantitative assessment of internal energy saving in rectifi cation with account for various aggregative states of the initial mixture is presented. Using the internal energy saving theory, it has been proven that in supplying a "cold" (without preheating) initial mixture into the fractionating column the heat expenditures on its separation become smaller than the total heat consumption in the column reboiler and in the initial mixture heater. It has been proven that in separation of the initial vapor mixture, in a number of cases, its precondensation in the reboiler is advisable for reducing expenditures.
The internal energy saving theory accounting for a multiple vapor condensation on the fractionating column trays is presented. The heat and mass transfer occurring on the trays is analyzed in terms of the law of thermodynamics. A formula for a quantitative assessment of internal energy saving in rectifi cation with account for various aggregative states of the initial mixture is presented. Using the internal energy saving theory, it has been proven that in supplying a "cold" (without preheating) initial mixture into the fractionating column the heat expenditures on its separation become smaller than the total heat consumption in the column reboiler and in the initial mixture heater. It has been proven that in separation of the initial vapor mixture, in a number of cases, its precondensation in the reboiler is advisable for reducing expenditures.
Author:  M. K. Zakharov, D. B. Pletnev, and E. A. Gubkin
Keywords:  internal energy saving, rectifi cation, condensation, evaporation, liquid–vapor mixture, cold mixture.
Page:  317