Petlyuk column (thermally coupled) simulation

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

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.

$L_{pref}$

liquid returned to the prefractionator from the main column

$V_{pref}$

vapour returned to the prefractionator

$L_{main}^{wall\,top}$

internal liquid at the top of the dividing wall

$V_{main}^{wall\,bottom}$

internal vapour at the bottom of the wall — these two interconnects are what 'thermally coupled' means

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