Use this operation to bring an amount of material into a vessel via an process input stream when 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). 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 know the amount and composition of material to be transferred in then use a Charge 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
● 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 Disposable Generic Container Procedure
● Batch Storage in a Disposable Large Bag (on a Skid) 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 pull in stream. The results of the operation are left as the equipment contents at the end of the charge operation.
A Pull In operation is a superset of the Charge and Transfer In operations with additional options. The calculations of this model depend on which ‘Amount Option’ is selected. If the ‘Available In Input Stream’ amount option is chosen, the operation is identical to a Charge or Transfer In operation. If the selected pull in stream is an input stream, the calculations are performed as in the Charge model. If the selected pull in stream is an intermediate stream, the calculations are performed as in the Transfer In Model.
For the rest of the (Amount) options the amount of material is not specified in the input stream but is either set by user directly or computed during the simulation. In the later case model is quite unique in the following way: While the majority of models in SuperPro Designer combine variables from input streams and/or the state of the unit procedure (before the operation is executed) with operating conditions and compute variables describing the state of the unit procedure (after the operation) and output streams, this operation operates in reverse: It consults the state of the unit procedure currently and a user’s specification possibly regarding the final state of the unit procedure (after the operation is executed) and then modifies the amount of material on the manipulated (pull-in) stream, so that the expressed design objective is met.
Oftentimes, during the design of a new process, it is required to transfer into a vessel (using an intermediate stream) or charge into a vessel (using a process input stream) a certain amount of material in order to meet certain specification of the final mixture in the vessel (e.g. achieve a desired total amount in the vessel). In such cases, the user does not know the amount of material to be brought into the vessel directly but it is to be determined by the program during simulation. This model allows users to express such process design constraints directly. Note that the composition of the adjustable stream (pull-in stream) must be set by the user before the simulation starts, if the stream happens to be a process input stream. The designer can choose to specify one of the following targets (any one of these will determine the amount of material that will be pulled-in):
a) Amount is set in the input stream (as in Charge / Transfer In Operations)
b) Specify Mass of the pull-in stream
c) Specify Volume of the pull-in stream
d) Specify properties of the final mixture
For case (d), the following specification options are available:
● Ratio of pull-in mass or volume to the initial amount
● Final Mass or Volume of the mixture (after the pull-in) operation
● Concentration or mass fraction of a specific component in the final mixture
● Final Temperature of the mixture (after the pull-in) operation
In this case, the flow of the pull-in stream is calculated in an iterative way. Heat and Mass balances are performed in order to determine the final mixture composition, the pull-in stream flow rate, or the final temperature.
The required flow of the pull-in stream, whether set by the user or computed, is propagated backwards, through the network of connectivity.
Since iterative calculations are performed, and since the user may have set un-achievable goals in (c) above, it is possible that the model will fail to determine a value for the flow of the adjustable pull-in stream that will meet the matches the user’s request. In that case, a warning will message will appear, explaining why the design goal set is unachievable and offering suggestions on how to remedy the situation.
If the ‘Scalable’ option is chosen then the user-specified pulled-in mass/volume, or final mass/volume are adjusted with overall throughput adjustments.
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. For more details on how to setup a master-slave relationship, see The Scheduling Tab.
See Batch Vessel Operations: Equipment Sizing.
See Vacuum Pump Auxiliary Equipment Calculations.
The interface of this operation has the following tabs:
● Oper. Cond’s, see Pull In: 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 Operations Dialog: Description Tab
● Batch Sheet, see Operations Dialog: Batch Sheet Tab
● Scheduling, see Operations Dialog: Scheduling Tab