Use this operation to bring a known amount of material, of known composition, into a vessel via an process input stream. Note that the material is not modelled to be transferred from another vessel but instead it is a direct process input. If you need to move material from one vessel to another then use a Transfer In operation. If you don’t know the amount of material to be transferred in but instead the amount depends on some criterion (e.g. to achieve a certain volume level or concentration in the vessel) then use a Pull In operation instead.
This operation may result in VOC emissions if volatile compounds are involved; for more details, see Chapter 10 (Emissions).
● Batch Vessel Procedure in a Reactor
● Batch Vessel Procedure in a Seed Reactor
● Batch Vessel Procedure in a Bioreactor
● Batch Vessel Procedure in a Seed Bioreactor
● Batch Vessel Procedure in a Disposable Bioreactor
● Batch Vessel Procedure in a Disposable Seed Bioreactor
● Batch Vessel Procedure in a Fermentor
● Batch Vessel Procedure in a Seed Fermentor
● Batch Vessel Procedure in a Disposable Bioreactor
● Inoculum Preparation Procedure in a Rocking Bioreactor
● Inoculum Preparation Procedure in a Roller Bottle
● Inoculum Preparation Procedure in a T-Flask
● Inoculum Preparation Procedure in a Shake Flask
● Inoculum Preparation Procedure in a Test Tube
● Microfiltration (Feed and Bleed) Procedure
● Ultrafiltration (Batch) Procedure
● Ultrafiltration (Feed and Bleed) Procedure
● Reverse Osmosis (Batch) Procedure
● Reverse Osmosis (Feed and Bleed) Procedure
● Nutsche Filtration Procedure
● Centrifugation in a Basket Centrifuge (Top Discharge) Procedure
● Centrifugation in a Basket Centrifuge (Bottom Discharge) Procedure
● Batch Distillation Procedure
● Batch Storage in a Blending Tank Procedure
● Batch Storage in a Flat Bottom Tank Procedure
● Batch Storage in a Receiver Tank Procedure
● Batch Storage in a Horizontal Tank Procedure
● Batch Storage in a Vertical-on-Legs Tank Procedure
● Batch Storage in a Drum Procedure
● Batch Storage in a Drum Procedure
● Batch Storage in a Tote Procedure
● Batch Storage in a Disposable Generic Container Procedure
● Batch Storage in a Disposable Large Bag (on a Skid) Procedure
● Mixing In a Batch Tumble Mixer Procedure
● Batch 1x1 Generic Box Procedure
● Batch 3x3 Generic Box Procedure
● Batch 5x5 Generic Box Procedure
● Batch 10x10 Generic Box Procedure
The operation combines material as found in the host vessel at the end of the previous operation (if any) and the material of the designated charge stream. The results of the operation are left as the equipment contents at the end of the charge operation.
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Variable |
Explanation |
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Mass Flowrate (kg/h) |
Represents the rate of material transfer into the receiving vessel. If the receiving equipment is represented by multiple units (assumed to be operating in parallel), then this rate refers to be the rate by which material is transferred in each unit. For a given (fixed) amount of material transferred in, if the rate is set and the number of units is doubled, then the calculated process time will become half of that of a single unit. Similarly, if the process time is set and the number of units is doubled, then the calculated rate will become half of the single unit case. |
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Volumetric Flowrate (m3/h) |
Exactly the same as above, only it refers to rates by volume instead by mass. |
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Charge Rate |
Either the mass flowrate or volumetric flowrate. |
The modeling equations of a Charge operation are very simple. The only goal is to determine the Charge time or Charge rate using the following equation:
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If the duration of this operation is matched up to another operation (master operation), then the setup time, process time and turnaround time are simply derived from the master operation.
See Batch Vessel Operations: Equipment Sizing.
● The charge stream must carry material of non-zero flow and of uniform phase (either all liquid or all gas). If the material is found to be of mixed phase, then only the liquid portion is used for the amount - rate - time calculations as described in the Modeling Calculations section.
● The charge stream cannot be shared with other operations in the unit procedure.
See Vacuum Pump Auxiliary Equipment Calculations.
The interface of this operation has the following tabs:
● Oper. Cond’s, see Charge: Oper. Conds Tab
● Volumes, see Batch Vessel Operations: Volumes Tab
● Vent/Emissions, see Vessel Operations: Vent/Emissions Tab
● Labor, etc, see Operations Dialog: Labor etc. Tab
● Description, see Charge: Description tab
● Batch Sheet, see Operations Dialog: Batch Sheet Tab
● Scheduling, see Operations Dialog: Scheduling Tab