Batch Extraction / Phase Split: Oper. Conds 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

○ Transfer Out Stream Indicates the output port that is connected to that stream which is used to transfer out the selected phase. Click on the list box to bring up a list of available output ports in order to select one.	<none>	Any Output Port
○ Material Balance Based on Partition Coefficients The mass balance is based on the component partition coefficients specified by the user in the Mat. Balance tab.
○ Material Balance Based on Component Splits The mass balance is based on the component split percentages specified by the user in the Mat. Balance tab.
○ Pressure Set by User Check this box to set the pressure.	No	Yes/No
◙ Pressure (atm) The operating pressure of the vessel.	1.0	Positive
● Operating Temp. (^oC) The operating temperature of the vessel.	25.0	Positive
○ Power 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 (Per Volume) (kW/m³) The power consumed for the operation per volume of material.	0.0	Positive
◙ Total 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
○ Setup Time (min) The amount of time (per cycle) spent before each operation is carried in preparation for the actual execution of the operation. It may involve actions like cleaning, vacuuming, setting up of equipment, etc. which the user opted not to model explicitly.	0.0	Positive
◙ Process Time (min) The actual duration of the operation.	360.0	Positive
○ Ignore Labor? Check this box to ignore labor for this operation. This option is used only if the process time is set by a master-slave relationship.	Yes	Yes/No

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 Extraction / Phase Split: Modeling Calculations.

•Transfer Out Stream...

The modeling of a batch extraction operation includes the transfer out either of the bottom or the top phase. Consequently, you must always select a transfer out stream. The transfer stream must be one of the output streams of the procedure that this operation is participating. Multiple transfer out operations can use a transfer out stream. In such a case, if you visit the dialog of that stream, you will see the sum of all materials transferred using that stream.

•Duration Options...

a) By default, the duration of a batch extraction operation only includes the time required to transfer the bottom phase out. To account for time required for mixing and separating the two phases, you may use a Hold operation or include that time in the Setup time of this operation. For the transfer out time, you have the option to either set the duration of transfer (explicitly or implicitly by setting the transfer flowrate) or allow the duration to match exactly the duration of another operation either in the same procedure or in another procedure.
The duration options for this operation are:

a) You can either set the transfer time directly

b) The transfer time can be calculated based either on the Mass or the Volumetric Flowrate

c) You can match the duration of this operation with the duration of another operation by introducing a master-slave relationship between the two operations. The program will match the setup-time, the process time and the turnaround time of this operation (the ‘slave’) with the corresponding times of the reference operation (the ‘master’ operation).

•Material Balances...

The material balances for the phase split can be done using partition coefficients or component splits. Your material balance option selection on this dialog affects the contents of the Mat. Balance dialog.

•Pressure...

The pressure of the system, if not specified by the user, is set equal to the pressure of the previous operation.