Three-phase Process Flowsheets & Simulations
Explore 2 validated, solved Three-phase simulation flowsheets in MaximaLabs — real components: ethanol, water, n_hexane, benzene. Open any one directly in your browser.
Solved via: NRTL.
Heterogeneous azeotropic distillation
An n-hexane entrainer carries water overhead as a ternary heteroazeotrope; the condensed overhead splits in a three-phase flash into an organic layer and an aqueous layer, while dry ethanol leaves in the bottoms — the three-phase separation ordinary distillation cannot do.
7 unit ops • NRTL
17 0
View & openEthanol-water-benzene column (multiplicity study)
The ethanol/water/benzene heteroazeotropic column — one of the most-studied systems in distillation modeling for exhibiting multiple steady states at the same specifications (Magnussen et al. 1979; Prokopakis & Seider, AIChE J. 29, 49, 1983; Venkataraman & Lucia, Comput. Chem. Eng. 12, 55, 1988). Benzene entrains water overhead as a heteroazeotrope, decanted into organic/aqueous layers, leaving dry ethanol in the bottoms. This flowsheet reports the single steady state the MaximaLabs solver converges to from its initial guess — it does not sweep initial guesses to map the full multiplicity map the cited studies performed.
7 unit ops • NRTL
17 0
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