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ProMax Tutorial

ProMax Tutorial

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ProMax Tutorial

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  1. ProMax Tutorial Terry A. Ring CH EN 4253

  2. Steady State Process Simulation AspenPlus ProMax ChemCad Hysis HySim ProSim CADSim OLI Process Simulator KemSimp Chemical Workbench Code Ascend IV Dynamic Process Simulation Aspen Dynamics CADSim Simulation Solutions, Inc. Process Simulation Software

  3. Aspen Next Button Many units that perform a given function Degrees of Freedom are chosen for you Setup for kinetic reactions are tricky Accounts for particle sizes Simple block models Automatic Plant Costing (Icarus) ProMax More Thermo Package Choices Fewer units that perform a given function You choose the Degrees of Freedom Reaction setup is more straight forward Detailed design of HX Reboilers Condensers Distillation Columns Does not deal with particle sizes No Plant Costing Some minor bugs not worked out OverviewDifferences to Aspen Industrial Standard New Company

  4. Aspen (Left Hand Bar) Title Components Thermopackage Process Flow Sheet Feed Stream Unit Specifications Fixed degrees of freedom Run Results Report ProMax Environment Components Thermopackage Process Flow Sheet Feed Stream Unit Specifications Various degrees of freedom Run Results Report Steps to Run

  5. Degrees of Freedom • Statistical Mechanics –Gasses • Gives Heat Capacity of Gasses = NR/2

  6. Phase Diagram F = C-P+2 C=Components P=Phases 2 = T and P Process Simulation ND= Nvariables-Nequations Nvariables for each stream Mole fractions Mole flow rate Enthalpy (T,P) Nequations Overall Component mole balance Mole fractions add to 1.0 for each stream Enthalpy Balance Degrees of Freedom

  7. Example-I • Problem 5.12 • Alternatives in preparing a feed. A process under design requires that 100 lbmol/hr of toluene at 70F and 20 psia be brought to 450 F and 75 psia. • Flow sheets using Peng-Robinson • Boil-Superheat-Compress • Pump to 75 psi-Boil-Superheat

  8. Problem -2 Use Gibbs Minimization reactor in Aspen to determine the products of reaction at 10 atm and 200 C. Feed equimolar in CO and H2

  9. Example-4 • Distillation/Flash • Isopropanol – Water • 100 lbmole/hr • Flash at 90C • Distillation • R=2 • BUR=3