page_title: Modeling and simulation of batch distillation unit
section_title: Simulation result of batch distillation unit
hierarchical_section_title: Modeling and simulation of batch distillation unit / Simulation result of batch distillation unit
caption_attribution_description: English: batch distillation unit use for separation of components from the liquid
context_page_description: Aspen Plus, Aspen HYSYS, ChemCad and MATLAB, PRO are the commonly used process simulators for modeling, simulation and optimization of a distillation process in the chemical industries. Distillation is the technique of preferential separation of the more volatile component from the less volatile ones in a feed followed by condensation.The vapor produced is richer in the more volatile components. The distribution of the component in the two phase is governed by the vapour-liquid equilibrium relationship. In practice, distillation may be carried out by either two principal methods. The first method is based on the production of vapor boiling the liquid mixture to be separated and condensing the vapors without allowing any liquid to return to the still. There is no reflux. The second method is based on the return of part of the condensate to still under such conditions that this returning liquid is brought into intimate contact with the vapors on their way to condenser.
context_section_description: The BatchFrac is rigorous model used for simulation of batch distillation column present in the model library of the software. It also includes the reactions occurred in any stage of 
  the separator. BatchFrac model does not consider column hydraulics, and there is negligible vapour holdup and constant liquid holdup. Modeling and simulation of batch distillation unit is done with the help of one of the most important process simulators (aspen plus) used in chemical industry with the following data given in the table and check the simulation result.
  Various steps are involved in the simulation of batch distillation column using aspen plus software is :
  Understand the problem statement and input stream data
  Specifying the components-  add Ethanol and water from the components list
  Specifying the property method-UNIFAC
  Go to the simulation library
  Creating flowsheet with help of model library present in the software, for batch distillation choose batchfrac model form library( figure 2)
  Specifying input stream information that is temperature, pressure, Composition type and flow rate of the components
  Temperature = 373 K, Pressure=1 bar
  Flow basis = Volume( 50 l/hr)
  Composition type = mole fraction
  Ethanol - 0.5, Water – 0.5
  Specifying block information what type of distillation column is present (Pot +overhead condenser type)
  Configuring settings –types of global unit used – METCBR
  Running the simulation
  Viewing the result-  check streams result or steam table obtain from the running the simulation(figure 3)  Similarly we can do simulation for other distillation column like fractional distillation by using Redfrac model from model library present in the software.
caption: 'Figure 2 –process flow diagram of batch distillation column (for ethanol and water)'
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