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.