Continuous Distillation (Rigorous): Oper. Conds Tab

ContDistillationRigorousOperConds.jpg
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

 

Number of Theoretical Stages

3

Positive Integer

Stage Efficiency (%)

80.0

0 – 100

Column Pressure (atm)

1.0

Positive

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

90.0

Positive

Condenser Duty (kcal/h)
The heat transfer rate of the cooling agent.

0.0

Positive

Condenser Agent Name
Indicates the cooling agent used in the condenser. Click on the list box to bring up a list of available cooling agents in order to select one.

<Cooling Water>

Any Cooling Agent

Condenser Agent In Temp. (oC)
The inlet temperature of the cooling agent.

25.0

Positive

Condenser Agent Out Temp. (oC)
The outlet temperature of the cooling agent.

30.0

Positive

Condenser Agent Rate (kg/h)
The mass flow rate of the cooling agent.

0.0

Positive

Flash Feed?

Yes

Yes/No

Feed Quality (q) (%)

100

0 – 100

Feed Stage Position

2

Positive Integer

Stripping Ratio (L/F)

1.0

Positive

Bottom Stream (B/F)

0.5

Positive

Reflux Ratio (L/D)

0.0

Positive

Vapor Linear Velocity (m/s)

3.0

Positive

Reboiler Operating Temp. (°C)

100

Positive

Reboiler Duty (kcal/h)
The heat transfer rate of the heating agent.

0.0

Positive

Reboiler Agent Name
Indicates the heating agent that is used in the reboiler. Click on the list box to bring up a list of available heating agents in order to select one.

<Steam>

Any Heating Agent

Reboiler Agent In Temp. (oC)
The inlet temperature of the heating agent.

152.0

Positive

Reboiler Agent Out Temp. (oC)
The outlet temperature of the heating agent.

152.0

Positive

Reboiler Agent Rate (kg/h)
The mass flow rate of the heating agent.

0.0

Positive

Heat Transfer Efficiency(%)
The heating agent consumption efficiency. Specify a value below 100% to account for heat losses to the surroundings when a heating agent is used.

100.0

[0,100)

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.