Wide-boiling column Process Flowsheets & Simulations
Explore 2 validated, solved Wide-boiling column simulation flowsheets in MaximaLabs — real components: methanol, dimethyl_ether, water, ethane, propane, n_butane. Open any one directly in your browser.
Solved via: PENG-ROBINSON.
DME synthesis (methanol dehydration)
Catalytic methanol dehydration (2 CH3OH -> (CH3)2O + H2O, 82% conversion) followed by two atmospheric-pressure columns: DMECOL rejects dimethyl ether overhead (~88% pure — the ternary's relative volatility at this pressure caps a single column's overhead purity there) via the inside-out method (a genuinely wide-boiling ternary — DME boils at -24 C, water at 100 C), then MEOHCOL recovers unconverted methanol (99.9% pure) from the water byproduct (99.3% pure). From the ChemSep casebook (DME_ie101583j).
8 unit ops • PENG-ROBINSON
17 0
View & openLight-ends fractionation train
A classic three-column light-ends train splitting an ethane/propane/ n-butane/n-pentane feed into four near-pure products: DEC2 (deethanizer, 5 bar) rejects ethane overhead, DEC3 (depropanizer, 5 bar) takes the propane cut, and DEC4 (debutanizer, 2 bar) splits n-butane from n-pentane. A genuinely wide-boiling train — DEC2 and DEC4 both land in the documented successive-substitution residual plateau (converge to a physically correct, sharp separation just above the strict 1e-5 tolerance) rather than a clean converged status, the same class of behavior already accepted for the DME casebook entry. From the ChemSep casebook (light-ends fractionation).
8 unit ops • PENG-ROBINSON
17 0
View & open