Light ends, three real columns in a row
An ethane/propane/butane/pentane feed cut into four near-pure products across a deethanizer, depropanizer and debutanizer at three different pressures.
The actual dark-mode canvas: an ethane/propane/butane/pentane feed cut into four near-pure products across three columns at three different pressures — the same P&ID symbols you edit in the app.
A genuinely wide-boiling train
Each column solves its own MESH equations and each one's bottoms is literally the next one's feed, so a spec change in the deethanizer propagates all the way to the pentane bottoms. Honesty note: the deethanizer and debutanizer both land in the documented successive-substitution residual plateau — a physically correct, sharp separation just above the strict tolerance — rather than a clean converged status.
Unit ops shipped for this vertical
Wang-Henke MESH column solver — the same rigorous solve at any scale.
Stream each column's reflux ratio, overhead purity, and tower pressure from the sat-gas plant's OPC-UA server into this flowsheet's twin comparison — a column drifting off its solved cut point is flagged against the converged train, not against last month's lab result.
See the Digital Twin platform →Try it yourself
- ✓Three cascaded rigorous MESH columns, genuinely connected
- ✓A wide-boiling train — relative volatility spans orders of magnitude
- ✓From the ChemSep casebook (light-ends fractionation)