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This is our main download page for ChemSep containing updates for the latest LITE version as well as case stories and examples. This page is changing frequently.

File Description
[lite.exe] ChemSep-LITE, limited to 300 stages and 40 components with the equilibrium flash/column simulator and 400+ component library.
[lite.zip] ChemSep-LITE Zip-file installer

 Flowsheets that use ChemSep

We use COCO as tool for testing ChemSep columns in (petro)chemical process simulations. This free simulation tool is a great platform for students to become familiar with various commercial chemical processes and the simulation techniques required for design and optimization of chemical process plants.

Files Description
[pdf] [fsd] [png] ASU flowsheet ASU PFD ASU flowsheet by H.Kooijman (2006). Air Separation unit producing 60 t/h oxygen (recovery 75%) and liquid argon (recovery 85%) using a simplified flowsheet (i.e. refrigeration air is not compressed to a higher pressure, resulting in a lower efficiency, and the simple Peng-Robinson equation of state is used for simulation, leading to inaccuracies in the predicted refrigeration due to the JT effect).
[fsd] [png] Butyl acetate process Process to synthesize Butyl Acetate from Methyl Acetate and Butanol, adapted from Luyben et al., Ind.Eng.Chem.Res. (2011) 50 pp. 1247-1263. Note that the temperature of the last column has been increased to 4.4 atm to match the bottom temperature of the Butyl Acetate column. Also realize that the Methyl Acetate recycle rate is a strong function of the chosen thermodynamic models and their interaction parameters.
[fsd] [png] Cumene process Process for producing Cumene from Benzene and Propylene as adapted by Luyben in Ind.Eng.Chem.Res. (2010) Vol. 49 pp. 719-734. Note that this flowsheet uses fixed conversion rates in the reactor whereas the original publication uses rate equations.
[fsd] [png] Butanol Water heterogeneous distillation Separation of Butanol and Water by making use of the liquid-liquid-equilibria providing a means to break the vapor-liquid azeotrope, adapted from Luyben et al. Energy Fuels (2008) 22 pp. 4249-4258.
[fsd] [png] Pressure swing distillation Separation of the Methanol and Acetone minimum temperature azeotrope by using the pressure sensitivity of the azeotropic composition of this mixture by operating two columns at different pressures, adapted from Luyben et al. Ind.Eng.Chem.Res. (2008) 47 pp. 2696-2707.
[fsd] [png] Methanol from syngas Methanol synthesis from syngas as described by Luyben et al. Ind.Eng.Chem.Res. (2010) 49 pp. 6150-6163. Note that this flowsheet uses fixed conversion rates in the reactor whereas the original publication uses rate equations. Furthermore, the temperature of the vapor overhead recycle of the methanol column is highly dependent on the flowrate and thermodynamic model selection.
[fsd] [png] BTX Petlyuk / divided wall column BTX Petlyuk / Divided Wall Column as described by Luyben in Ind. Eng. Chem. Res. (2009) Vol. 48 pp. 6034-6049 simulated by two separate interconnected columns.
[fsd] [png] Pervaporation (hybrid) distillation of ethanol and water Separation of Ethanol and Water using pervaporization to break the azeotrope. Note that the reflux ratio is set instead of the overhead composition because the sensitivity to the binary interaction parameters of the UNIQUAC model and the vapor pressure models. Specification of an 85% overhead would lower the reflux ratio to 2.5, lowering the condenser duty requirement. Adapted from Luyben, Ind.Eng.Chem.Res. (2009) 48 pp. 3484-3495.
[fsd] [png] THF / Water azeotropic distillation Pressure swing THF / Water azeotropic distillation with two columns operating at different pressures using heat integration, as described by Luyben in Ind.Eng.Chem.Res. (2008) Vol. 47 pp. 2681-2695.
[pdf] [fsd] [png] MCHT Extractive distillation of MethylCyloHexane/Toluene using Phenol adapted from Tiverios and Van Brunt in Ind.Eng.Chem.Res. (2000) 39, pp. 1614-1623
[fsd] [png] MA Extractive distillation of Methylal from Methanol using DMF as described by Wang et al. in Ind.Eng.Chem.Res. (2012) Vol. 51 pp. 1281-1292.
[pdf] [sep] Aromatics column described by R. Strigle (Gulf., 1987).
[pdf] [sep] Depropanizer described by R. Strigle (Gulf., 1987) to recover propylene and propane from C4 and heavier hydrocarbons.
[pdf] [sep] Azeotropic distillation column of Methanol / Isopropanol with Water by DeRosier.
[pdf] [sep] industrial i-butane/n-butane splitter as reported by Klemola and Ilme .
[pdf] [sep] How to model columns involving components that are not included in the databank.
[pdf] How to add compounds to the ChemSep databanks.
[fsd] Benzene/Toluene/p-Xylene separation train from ChemSep book.
[fsd] [png] DiMethylEther by dehydration of Methanol Dehydration of Methanol to produce DiMethylEther by Luyben in Ind.Eng.Chem.Res. (2010) Vol. 49 pp. 12224-12241.
[fsd] [png] Natural Gas Train Natural Gas separation train from Luyben in Ind.Eng.Chem.Res (2013) Vol. 52 pp. 10741-10753.
[fsd] [png] TAME Reactive distillation for producing Tert-Amyl Methyl Ether (TAME) from a cracked C5-cut by Luyben in Eng.Chem.Res. (2005) Vol. 44 pp. 5715-5725.
[fsd] [png] Methyl Acetate Esterification of Acetic Acid with Methanol to Methyl Acetate by means of reactive distillation as described in Reactive Distillation Design and Control by William L. Luyben and Cheng-Ching Yu, Wiley, NY (2006) pp. 147-164.
[fsd] [png] Light ends distillation Refinery light ends separations (depropanizer, debutanizer, deisobutanizer) by means of distillation by Luyben in Ind.Eng.Chem.Res., 52 (2013) pp. 15883-15895.
[fsd] [png] Methyl Acetate This case study is a modified version of the 1967 American Institute of Chemical Engineers student contest problem for the dealkylation of Toluene to Benzene with hydrogen, see "Conceptual Design of Chemical Processes", McGrawHill, 1988, or J.M Douglas, AIChE J., Vol. 31 (1985) p. 353. It features a gas phase reaction with gas recycle as well as a separation train with a recycle of unreacted toluene.
[fsd] [png] Light ends distillation EthylBenzene production from Ethylene and Benzene by Luyben in AIChE J. Vol. 57 (2011) pp. 655-670. Note that this flowsheet uses fixed conversion rates in the reactor whereas the original publication uses rate equations.
[fsd] [png] Methyl Ethyl Ketone Dehydrogenation of 2-Butanol to Methyl Ethyl Ketone catalyzed by In/MgO as per DE2831465
[fsd] [png] Light ends distillation Hydration of Ethylene Oxide to Mono-Ethylene Glycol (MEG) using an uncatalyzed reactor at 200 C with kinetics from IECR 48 (2009) pp. 10840-10844.
[fsd] [png] Ethanol-Water Heterogeneous azeotropic distillation of Ethanol and Water, inspired by the flowsheet described by G. Prokopakis and W.D. Seider in AIChE J. 29 p. 49. This separation process model is extremely sensitive to small changes in the process specifications and also to the parameters used in the thermodynamic model.
[fsd] [png] C3MR - Propane Mixed Refrigerant Cycle for Natural Gas C3MR LNG Refrigeration Cycle for Natural Gas (NG). This flowsheet was inspired by that given in the report "Modelling and optimization of the C3MR process for liquefaction of natural gas," by Dag-Erik Helgestad (December 2009).
[fsd] [png] TEALARC TEALARC LNG Refrigeration Cycle for Natural Gas (NG). This flowsheet was based on one described in the report "Simulation, optimal operation and self optimisation of TEALARC LNG plant," by Emmanuel Orji Mba (December 2009).
[fsd] [png] Ethylene Cracker Ethylene Cracker with high purity separation train using UOP Multi-Downomer trays based on the debottlenecking of the EE splitter and the PP splitter of the Port Arthur (TX) Chevron Ethylene Cracker.
[fsd] [png] TEG NG Drying Drying of Natural Gas using TEG..

All your suggestions are welcome, send them to Harry Kooijman.

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