2-Way Component Splitting: 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

○ Is Scaleable ? Check this box to scale up or down the operation data (in this case the specified split component flows). Note that this box is only enabled if the flow is set for at least one component.	Yes	Yes/No
○ Consider Solids ? Check this box to specify component splitting data for solid components only.	No	Yes/No
● Is Solid? This box is only displayed if the “Consider Solids” option is checked. Also, it cannot be set by the user. The program will check or uncheck this box automatically depending on whether the user has checked or unchecked, respectively, the ‘Is Solid?’ property of the corresponding pure component through the Pure Component Properties dialog.	No	Yes/No
○ Is Particulate Solid? This box is only displayed if the “Consider Solids” option is checked. Also, it cannot be set by the user if the ‘Is Solid’ box is unchecked. If the ‘Is Solid’ box is checked, you can check this box to indicate that the corresponding solid component is a particulate solid (as opposed to a dissolved solid).	No	Yes/No
◙ Split (%) The mass percentage of a component’s flow in the feed stream that is split to the selected split stream.	0.0	0 – 100
◙ Flow (kg/batch or kg/h) The flow of a component that is split to the selected split stream. If the specified flow exceeds the available flow in the feed stream, then all of the flow will be directed to the selected split stream.	0.0	Positive
◙ Total Solids in Top/Bottom Stream(%) The mass fraction of particulate and dissolved solids in the selected split stream (top or bottom output stream), converted into percentage.	15.0	(0,100)
◙ Particulate Solids in Output Stream (or Particulate Solids in Final Contents) (%) The mass fraction of particulate solids in the selected split stream (top or bottom output stream), converted into percentage.	15.0	(0,100)
● Operating Throughput per Unit (kg/h) The mass flow rate at the inlet divided by the number of equipment units.	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 (per cycle).	60.0	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 Component Splitting Operations: General Description.

•Splitting Specification Options.

You may choose to provide splitting specification data either for top outlet stream or for the bottom outlet stream.

•Material Balance Options

If the option to consider solids is not checked (default), then for every component you must specify either the component’s split percentage to the selected outlet stream or the component’s flow in the selected outlet stream. Based on the specified component data, the program will do the component mass balances to determine the component flows of both outlet streams.

If the option to consider solids is checked, then the components table is used to specify component splitting data only for particulate solid components (i.e., undissolved solids, suspended or precipitated). Only pure components that are set as solid through the Pure Component Properties dialog can be set as particulate solids in the components table. In addition to setting one or more solid components as particulate solids and specifying the splits for those components, you must also specify either the total (particulate and dissolved) or particulate solids percentage of the selected outlet stream. Based on this information, the program will calculate the component splits for all other components besides particulate solids (i.e., dissolved solids, liquids and gases).

•Duration...

The duration controls appear only if the procedure in batch mode. In Rating Mode, you have a choice to either set the process time (and the setup time) or to allow the process time to be specified (based on the throughput). In Design mode, you must specify the process time (and the setup time) in order for the program to calculate the rated throughput.