Sargent

Sargent is an integrated process systems engineering platform. One desktop application covers the whole design loop of a chemical process: flowsheet simulation, heat integration, optimization, techno-economic and life cycle assessment, AI prediction of reactions and properties, and links to commercial simulators and to a physical plant. It runs many simulations at once, on the cores of one computer or on a cluster.

Version 0.1 is the first public build. It contains the simulator, the optimizers, the simulator links and the AI assistant. Heat exchanger network synthesis, TEA / LCA and the AI prediction models are not included in this build; their buttons are shown but disabled. They will be enabled in a later release.

Integrated features

Simulator

• Property methods: IDEAL, NRTL, WILSON, UNIQUAC, Peng-Robinson, Redlich-Kwong-Soave, Henry components, and electrolyte NRTL with an electrolyte wizard
• Unit operations: MIXER, FSPLIT, SEP, HEATER, HEATX, FLASH2, RADFRAC, FILTER, PUMP, COMPR, VALVE, RSTOIC, REQUIL, RCSTR, RPLUG and a Calculator block
• Property analysis: pure-component curves, Txy / Pxy, ternary residue-curve maps, azeotrope search, phase envelopes

Parallel simulation

A case study (a grid or a list of input values) and the cases of an optimization are solved at the same time instead of one after another:

• Local: worker processes on the cores of your computer.
• Cluster: the nodes of a Ray cluster (several computers); Sargent ships itself to the workers.

Failed, unconverged or off-specification cases are flagged as infeasible; the results are shown as tables, Pareto fronts and parallel-coordinate plots.

Installation

Python 3.12 to 3.15 on Windows (64-bit); Linux builds follow in a later release. Package: pypi.org/project/sargent.

pip install "sargent[gui]"              # the desktop application
pip install "sargent[gui,parallel]"     # with Ray for cluster runs
sargent

Aspen Plus, DWSIM, optimization solvers (IPOPT and others) and life cycle inventory databases are not part of Sargent. Install and license them yourself to use the features that need them. Aspen Plus runs on Windows only.

License

Sargent is proprietary software distributed as compiled packages only (see LICENSE).

• Free for academic research, teaching and personal non-commercial use.
• Commercial use requires a separate license. Contact: https://github.com/damdaepark
• Third-party components and their licenses: THIRD_PARTY_NOTICES.md.

Citation

A paper describing Sargent is in preparation. Until it is published, please cite:

Damdae Park, Sargent: an integrated process systems engineering platform, https://github.com/damdaepark/sargent

Name

Named in honor of Roger W. H. Sargent (1926-2018), founder of process systems engineering. Not affiliated with the Sargent Centre for Process Systems Engineering (Imperial College London / UCL).

Copyright (c) 2026 Damdae Park. All rights reserved.