Continuous Distillation (Rigorous): Initial Values Tab

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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

 

○ Model Parameters Set by User?
Check this box to specify user-defined model parameters.

Yes

Yes/No

◙ Condenser Temp (°C)
The operating temperature of the condenser.

90.0

Positive

◙ Reboiler Temp (°C)

100

Positive

◙ Absorption Vapor/Feed Ratio

0.0

Positive

◙ Stripping Vapor/Feed Ratio

0.0

Positive

◙ Condenser Vapor/Feed Ratio

0.0

Positive

◙ Molar Composition, x (mole fraction)
The molar composition of a component’s vapor phase either in the condenser, or in a stage, or in the reboiler.

0.0

Positive

◙ Molar Composition, y (mole fraction)
The molar composition of a component’s liquid phase either in the condenser, or in a stage, or in the reboiler.

0.0

Positive

◙ Temperature, T (oC)
The temperature in the condenser, or in a stage, or in the reboiler.

25.0

Positive

◙ Pressure, P (atm)
The pressure in the condenser, or in a stage, or in the reboiler.

1.0

Positive

◙ Liquid Molar Flow, L (mol/h)
The molar flow of the liquid phase in the condenser, or in a stage, or in the reboiler.

0.0

Positive

◙ Vapor Molar Flow, V (mol/h)
The molar flow of the vapor phase in the condenser, or in a stage, or in the reboiler.

0.0

Positive

◙ Heating/Cooling Rate, Q (kcal/h)
The heat transfer rate in the condenser, or in a stage, or in the reboiler.

0.0

Positive

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

Specification Choices / Comments

For details on how the variables appearing in this tab are implemented, see Continuous Distillation (Rigorous): Modeling Calculations.