Mixer-Settler Extraction: Oper. Conds Tab

MixerSettlerExtractionOperConds.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

 

○ Mixer Residence Time (min)
The residence time of the material in the mixer.

2.0

Positive

○ Settler Residence Time (min)
The residence time of the material in the settler.

10.0

Positive

○ Operating Pressure (bar)
The pressure of the equipment during operation.

1.01

Positive

● Operating Throughput (Per Unit) (m3/h)
The material throughput per equipment unit during operation.

0.00

Positive

○ Product Component Name
Indicates the product component. Click on the list box to bring up a list of available components in order to select one.

<none>

Any Pure Component

● Recovery Yield (%)
The percentage of the product component that is recovered during operation.

95.0

0 – 100

○ Heat Transfer Agent Name
Indicates the heat transfer agent used by the operation. Click on the list box to bring up a list of available heating agents in order to select one.

<Chilled Water>

Any Heat Transfer Agent

● Inlet Temp. (oC)
The inlet temperature of the heat transfer agent.

5.0

Positive

● Outlet Temp. (oC)
The outlet temperature of the heat transfer agent.

10.0

Positive

● Agent Rate (kg/h)
The mass flow rate of the heat transfer 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)

◙ Temperature (oC)
The operating temperature of the equipment.

25.0

Positive

◙ Heating Duty (kcal/h)
The heating duty of the heat transfer agent (if a heating agent is used).

0.0

Positive

◙ Cooling Duty (kcal/h)
The cooling duty of the heat transfer agent (if a cooling agent is used).

0.0

Positive

○ Power Type
Indicates the power type that is used by the operation. Click on the list box to bring up a list of available power types in order to select one.

<Std Power>

Any Power Type

◙ Specific Power (kW/m3)
The power consumed for the operation per equipment volume.

0.5

Positive

◙ Power (kW)
The total power consumed for the operation (per cycle).

0.0

Positive

◙ Power Per Unit (kW)
The power consumed for the operation per equipment unit.

0.0

Positive

○ Power Dissipation to Heat (%)
The percentage of total power consumed for this operation that turns into heat, thereby raising the temperature of the material contained in the equipment.

100.0

[0,100]

◙ Process Time (min)
The actual duration of the operation (per cycle).

360.0

Positive

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 Mixer-Settler Extraction: Modeling Calculations.

•Operating Throughput Basis Options...

The operating throughput can be based on the heavy phase, light phase, or both phases.

•Process Time Options...

The process time controls appear only if the flowsheet and procedure are in batch mode. In Rating Mode, you can set the process time or allow the process time to be calculated based on the throughput. In Design mode, you must specify the process time.