Crude distillation, one solve and then the cuts
Desalter, fired heater, a multi-draw atmospheric column, three steam side-strippers and a three-phase reflux drum — side cuts carved from a real converged tray profile.
The actual dark-mode canvas: crude preheated against hot residue, desalted, fired to flash zone temperature, then cut into fuel gas, naphtha, kerosene, light and heavy gas oil, and atmospheric residue — with the overhead drum decanting sour water as a genuine third phase.
One column solve, then the cuts — not seven split fractions
The side draws are taken off a converged MESH tray profile, so moving a draw rate changes every cut above and below it the way it does in the unit. Each side-stripper is a real equilibrium-stage contactor against live steam, not a flash-point correction factor.
Unit ops shipped for this vertical
Two-stream counter-current exchanger — the crude/residue preheat that pays for a CDU's fired duty.
Combines multiple streams into one, closing the mass and energy balance.
Flash/phase-split unit op — the foundational vapor-liquid calculation.
Duty- or outlet-condition-specified energy-balance stage.
Multi-draw atmospheric column — side cuts carved from the converged tray profile.
Vapour + two liquid phases in one equilibrium solve — fuel gas, naphtha, and decanted sour water off one overhead drum.
A specified equilibrium-stage count absorbing or stripping between two contacted streams.
Stream your CDU's draw temperatures, fired-heater outlet, and overhead drum split from the plant OPC-UA server into this flowsheet's twin comparison — a cut point drifting away from the solved tray profile is flagged before it shows up in a product spec.
See the Digital Twin platform →Try it yourself
- ✓Multi-draw column: every cut comes off one converged MESH profile
- ✓Steam side-strippers as real equilibrium contactors, not flash-point factors
- ✓Crude/residue preheat integration solved against the fired duty