ProMax TutorialProcess Simulation SoftwareOverview Differences to AspenSteps to RunDegrees of FreedomSlide 6Example-IProblem -2Example-4ProMax TutorialTerry A. RingCH EN 4253Process Simulation Software•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.OverviewDifferences to Aspen•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 outSteps to Run•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–ReportDegrees of Freedom•Statistical Mechanics –Gasses–Gives Heat Capacity of Gasses = NR/2Degrees of Freedom•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 BalanceExample-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-SuperheatProblem -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)(22232sCOHHCOOHCHHCOExample-4•Distillation/Flash•Isopropanol – Water–100 lbmole/hr•Flash at