Different unit operations available in DWSIM.

Simulation of the reactive distillation column in DWSIM for esterification of acetic acid with methanol to form methyl acetate.

Simulation of distillation column sequence in DWSIM for Natural Gas separation.

Txy Plot generated in DWSIM for Ethanol/1-Propanol at 1.01325 bar using the Soave-Redlich-Kwong model of thermodynamics.

Simulation of cumene production from benzene and propylene.

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DWSIM is a multiplatform, CAPE-OPEN compliant chemical process simulator for Windows, Linux, Android, macOS, and iOS. It is available for download from here.

DWSIM allows chemical engineering students and practicing engineers to model process plants using rigorous thermodynamic and unit operations models. Since DWSIM is free/libre and open-source, they can see how the calculations are being done by inspecting the code during execution using free/libre tools available elsewhere.

DWSIM's powerful Thermodynamics engine is also available as a standalone dynamic link library (DLL) that can be linked against proprietary applications.