Aspen Plus and chemical process simulation

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I. Main Training Content (1) Basic Use of Aspen 1. Overview of the functions of Aspen Plus software, areas of application, as well as its features and capabilities 2. AspenONE Integration； List of software features ； Application scope 3. User interface – Properties and simulation environment 4. Property environment – Input components and properties 5. Simulation environment – Graphical process definition and process data 6. Unit operation models – Introduction to major unit operations (fluid transport and simple units, etc.) 7. Heat exchangers – Basic heaters, heat exchangers, and utility systems 8. Practical exercises on ethylene oxide processes * (II) Property methods and simulation 1. Criteria for selecting property methods, experience in engineering design ； Definition of property data sets (common properties used in engineering design) ； Physical property analysis (commonly used physical property analysis in engineering, adaptive analysis techniques) ； Physical property estimation (organic matter estimation, inorganic salts, organic salt estimation: molten salt systems, etc.) ； Use of several electrolyte equations ； Regression of physical property data (regression for conventional components, regression techniques for medium-high pressure mixed systems, several methods for obtaining thermodynamic equilibrium data). Introduction to NIST databases and data estimation/prediction (TDE). 2. Aspen Plus – material and energy balance calculations for gas-liquid-liquid three-phase equilibrium (evaluation of phase transition temperature sensitivity for styrene) ； Liquid-liquid equilibrium calculation for acetic acid extraction (Design Spec: function to adjust solvent amount based on design requirements) ； Liquid-solid equilibrium calculation (crystallization temperature of sodium sulfate decahydrate) ； Calculation of electrolyte solutions ； Practice with examples*. (III) 1. Thorough understanding of the Aspen Plus module’s rigorous reactor models – knowledge of equilibrium and kinetic reactions, as well as in-depth mastery of the use of various reactor models. Distillation column models – Understand the DSTWU model and gain in-depth expertise in the flexible use of the RadFrac model. 2. Aspen Plus distillation simulation calculations; Aspen ConSep for conceptual design of processes involving azeotic systems ； DSTWU is applied in the preliminary design of distillation columns ； Practice with examples* ； Design and Optimization of Process Parameters for RadFrac Distillation Columns ； Use the design specification Design Spec for rapid solution ； Optimize the feed plate position using sensitivity analysis ； Use Aspen Column INTERNALS for interactive design and verification of distillation column hydraulics and internals ； Simulation of complex distillation processes such as azeotropic distillation, reactive distillation, and double condensers (including off-gas condensers) ； Practice with examples*. 3. Aspen Plus heat transfer simulation models the heat transfer process of water-air-ethanol. Calculate the boiler heat load and steam surplus, determine the heat exchange area and the required amount of steam (as specified in the design), and use Aspen Plus along with Aspen EDR for rapid solution to carry out the design/verification of the heat exchanger. Practice with examples*. 4. Typical examples of process applications include wastewater stripping (azeotropic distillation), MTBE units (reactive distillation), C4 extraction (extractive distillation), heat pump distillation, etc. 5. Techniques for converging complex processes, as well as other aspects of Aspen Plus; new knowledge points are explained in line with the needs of the students in the class. (IV) 1. Application of Aspen Plus in advanced distillation processes: Design, verification, and dynamic control of distillation processes ； Strict calculation of the minimum reflux ratio and minimum number of theoretical plates ； Simulation of complex distillation processes such as azeotropic distillation, reactive distillation, and double condensers ； Combined process of extractive distillation and solvent recovery—phenol extracting toluene. 2. Application of Aspen Plus in advanced distillation processes (continued): Separation of homogeneous azeotropes—Pressure swing distillation for separating ethanol and benzene ； Separation of heterogeneous azeotropes—butanol dehydration ； Simulation techniques for electrolyte processes and distillation columns in petroleum refining processes ； Practice with examples*. (V) 1. Aspen Plus simulation for tower fault diagnosis: including the selection of convergence algorithms, addressing issues related to mass imbalance, handling process specifications, and dealing with impractically designed scenarios, with examples. 2. Aspen Plus full-process simulation was carried out for a certain plant to simulate the entire process of producing styrene through the catalytic dehydrogenation of ethylbenzene, in order to master the unit operation modules for distillation, reaction, and heat exchange as well as the techniques for achieving convergence in complex processes ； Practice*. 3. Aspen Plus is used, along with the Activation Economic Analysis Tool (APEA), to calculate the investment and operating costs associated with various design options, thereby facilitating the optimization of designs ； Use the activation energy analysis function to calculate the target device energy consumption value, and apply the pinch point principle to obtain suggestions for process modifications ； Activate the safety analysis environment to perform torch safety valve calculations. 4. Classification of simulated solid components in Aspen PLUS® ； Simulation of conventional solid components ； Simulation of unconventional solid components ； The concept of sub-flows and the input of solids into sub-flows. 5. Aspen Plus is used for the development of actual process packages, as well as for modeling and simulation of real industrial plants; key considerations and points to note are discussed. 6. The \"clean production process for dimethyl sulfoxide\" is introduced, guiding learners through the basic physical properties, reaction principles, unit operations, and ultimately the entire simulation process of this process. Leave your way :