Regeneration Frequency
There are two options to set up the regeneration frequency (as shown in Figure 1):
- Selecting the length of operating cycles (in hours or days): this is the time that the system remains in operation between the end of one regeneration and the beginning of the next regeneration. It calculates the resin volume needed and recommends a vessel size.
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Selecting the specific velocity (BV/h): according to the operating flow and the specific velocity value, the resin volume would be fixed and the length of operating cycles calculated. It will also recommend the vessel size.
- Selecting Prebed on Time, Rest on Specific Velocity: the regeneration frequency of the first vessel is defined by the Length of Operating Cycles. The regeneration frequency of the second (and third) vessel is defined by the Specific Velocity.
For the Condensate Polishing (IXCP) process, a third Regeneration Frequency option is available (as shown in Figure 1)

Figure 2: IX Initialization Window. Regeneration Frequency. IX Condensate Polishing
Note: The option “Selecting Prebed on Time, Rest on Specific Velocity” will be gray out until the users specifies the Resin Arrangement in the Vessel and Regeneration System window (see Resin Arrangement). The option “Selecting Prebed on Time, Rest on Specific Velocity” is available for Resin Arrangements with, at least, 2 vessels (i.e. [SAC]-[SBA], [SAC]-[SAC SBA] or [SAC]-[SBA]- [SAC])