Petlyuk column (thermally coupled) simulation

1 feed -> distillate + side + bottoms (coupled prefractionator + main column)

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Governing equations

The exact equations the solver works for a petlyuk column (thermally coupled) — the same math shown in the app's "Theory" panel, not a black box.

\text{prefractionator (A/C) coupled to one main column (single condenser + reboiler)}

L_{pref} = L_{main}^{wall\,top},\quad V_{pref} = V_{main}^{wall\,bottom}

\text{outer Wegstein loop on the interconnect streams to self-consistency}

Parameters

n_stages (main), n_pref (prefractionator), distillate_rate (light), side_rate (middle), reflux_ratio, pressure; optional feed_stages [wall_top, wall_bottom], side_stage; single-shell Petlyuk DWC, prefractionator bidirectionally coupled to one main column

Example flowsheets that use it

NGL fractionation: single-shell Petlyuk dividing-wall column

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Petlyuk column (thermally coupled) simulation

Governing equations

Parameters

Example flowsheets that use it

NGL fractionation: single-shell Petlyuk dividing-wall column

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