This unit operation model simulates batch evaporation in a stirred vessel by employing formal VLE models for the determination of the physical state of the vessel contents. The operation is dynamic in the sense that it captures the time evolution of the vessel contents until a specified vaporization target is achieved.
This operation is different than Batch Vaporization / Solvent Switch
● 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 3x3 Generic Box Procedure
● Batch 5x5 Generic Box Procedure
● Batch 10x10 Generic Box Procedure
The user must initially identify the problem to be solved by selecting an operating mode (i.e., concentrate or solvent switch) and a vaporization target (i.e., a specification for the vessel contents at the end of the operation). In the Concentration mode, one of the following vaporization targets can be specified: (a) final molar percentage volume, (b) final volumetric percentage, (c) final liquid volume, or (d) final amount of a key component, either as molar percentage or mass concentration. In the Solvent Switch Mode, the user can specify either (a) the final amount of the key component or (b) the total amount of solvent to be added in the vessel. In the latter case, the program assumes that the solvent is uniformly added to the vessel i.e., an equal amount of solvent is added at every time step throughout the duration of the vaporization.
The heating requirements of the operation are calculated under the assumption of a constant heating rate. This constant heating rate is initially applied to the vessel contents until their temperature reaches the bubble point of the mixture. Subsequently, the vaporization of the liquid contents begins until the specified vaporization target is achieved. The program calculates the average vaporization rate throughout the course of the operation.
The vaporization time is either specified by the user or calculated by the program, given a constant heating rate. Notice that when the solvent amount is specified in the case of Solvent Switch Mode, the heating rate cannot be specified by the user and is always calculated by the program.
See Batch Vessel Operations: Equipment Sizing.
See Vacuum Pump Auxiliary Equipment Calculations.
1. McCabe W. L., J. C. Smith, and P. Harriott. (1993). Unit Operations of Chemical Engineering, McGraw-Hill.
2. Kern D. Q (1965). Process Heat Transfer, McGraw-Hill.
3. Coulson J. M. and J. F. Richardson, (1978). Chemical Engineering, 2, Pergamon Press.
The interface of this operation has the following tabs:
● Oper. Cond’s, see Rigorous Batch Vaporization: Oper. Conds Tab
● Volumes, see Batch Vessel Operations: Volumes Tab
● Rigorous Toolbox, see Flash Evaporation: Toolbox Options Tab
● Profiles, see Rigorous batch vaporization: Profiles 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