Batch Distillation: Oper. Period Tab

Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab. The table also displays their default values and their generally acceptable range:

Variable	Default Value	Range

○ Reflux Ratio The reflux ratio for each period.	0.0	Positive
● Vapor Rate (kmol/h) The molar vaporization rate for each period.	0.0	Positive
● Vapor Rate (L/h) The volumetric vaporization rate for each period.	0.0	Positive
○ Mole % Distilled The mole percent that is distilled for each period.	0.0	Positive
○ Output Stream Indicates the output port that is connected to the output stream of each period. Click on the list box to bring up a list of available output ports in order to select one.	<none>	Any Output Port

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Specification Choices / Comments

The following list describes the available specification choices in this tab; for more details on how these are implemented, see Batch Distillation: Modeling Calculations.

•Operating Periods...

The user can add up to five periods.

•Vaporization Rate...

The vaporization rate is editable (input variable) only when the distillation time is calculated. When the user sets the distillation time, the program calculates an average vaporization rate [in kmol/h] for all periods.