and petrochemical, petroleum refining, polymer, and coal based processes. Nowadays, different Aspen package are available for simulations with promising performance. Briefly, some of them are presented below. Aspen Plus – This type of process simulator is used for steady state simulation of chemicals, petrochemicals and petroleum industries. It is also used for performance monitoring, design, optimization and business planning. Aspen Dynamics –This type of process simulator is used for dynamics study and closed loop control of several process industries. Aspen Dynamics is integrated with Aspen plus. Aspen Batch CAD – this simulator is typically used for batch processing, reaction and distillations. It allow us to derive reaction and kinetic information form the experimental data to create a process simulation. Aspen Chromatography-This is a dynamic simulation software package used for both batch chromatography and chromatography simulated moving bed processes. Aspen Properties- It is useful for the thermophysical properties calculation. Aspen Polymer Plus – It is a modeling tool for steady state and dynamic simulation and optimization of polymer processes. This is available within Aspen Plus or Aspen Properties rather than via an external menu. Aspen HYSIS – this process modeling package is typically used for steady state simulation, performance monitoring, design, optimization and business planning for petroleum refining, and oil and gas industries. Aspen simulate the performance of the designed process. A solid understanding of the underlying chemical engineering principles is needed to supply reasonable value of input parameters and analyse the result obtained. In addition to the process flow diagram, required input information to simulate a process are: setup, components properties, streams and blocks. Simulation result of batch distillation unit 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