PBA Flow-Through: Throwaway Tab

PBA_ColumnFlowthroughThrowaway.jpg

This tab appears on the interface dialog of the the following operation:

      Packed Bed Adsorption (PBA) Column Flow-Through

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

 

Throwaway %
The percentage of flow-through amount that exits through the throwaway stream for each component.

0.0

0 – 100

Throwaway Stream Name
Indicates the output port that is connected to the throwaway outlet stream. Click on the list box to bring up a list of available output ports in order to select one.

Out #8

Any Output Port

 Relative Throwaway Volume (per Cycle) (BV)
The volume of the throwaway amount per cycle expressed as number of bed volumes.

0.0

Positive

 Absolute Throwaway Volume (per Cycle) (L)
The volume of the throwaway amount per cycle

0.0

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 PBA Flow-Through: Modeling Calculations.

Throwaway %....

If the ‘Consider Throwaway’ option is set in the ‘Oper. Conds Tab’ (see PBA Flow-Through: Oper. Conds Tab), then a percentage of the Flow-Through stream equal to the specified Throwaway % will be sent to the Throwaway stream for each component. This can be useful if you wish to throw away an initial amount of flow-through because it contains little or no amount of valuable product components in it.