Chemical
TBC Esterification Plant
Tributyl citrate 2,750 t/a: esterification reactor, azeotropic butanol recovery and recycle loop. Mass balance closes to 0.001%.
Learn by doing
Case Tutorials: PFD drawing, simulation and mass balance
Download industry-proven .iax templates, follow the operation manual, or watch step-by-step videos. Go from blank canvas to a closed mass balance in an afternoon.
Operation Manual (PDF)
Full 50-page guide: installation, canvas operations, unit library, equation editor, recycle loop solving, and Excel/PDF export.
Installation & Getting Started
00:48Installing IAutoDrawSim on Windows
Download the installer, choose install path, desktop shortcut and first launch — about 6 minutes.
Installation & Getting Started
00:23Activating Offline Perpetual License
Enter your license key, bind to this PC, and verify offline mode works without network.
Installation & Getting StartedBasic Drawing
01:07Adding Units and Connecting Streams
Drag reactors, columns, tanks and filters from the library, wire streams and set stream names.
Basic DrawingProcess Balance
07:57Running a Steady-State Mass Balance
Solve the flowsheet, read the balance residual, and understand convergence warnings.
Process Balance
03:04Variable Copies and Node's Func Script
Application of Node Output Variable Copies, Connection Variable Copies and Node Custom Func Script.
Process Balance