Insights into the selection and design of fluid separation processes

Blahušiak, Marek; Kiss, Anton A.; Babić, Katarina; Kersten, Sascha R.A.; Bargeman, Gerrald; Schuur, Boelo

doi:10.1016/j.seppur.2017.10.026

Cited by 60 publications

(37 citation statements)

References 71 publications

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“…The addition of a solvent must therefore achieve a reversal of the boiling point order, hence separation of all aliphatic compounds over the top of the distillation column as the distillate. 45,46 For this challenging task, many solvents do not show high-enough selectivity. 46 The solvent screening results of this study will include a comparison with Sulfolane™ to identify which of the bio-based solvents perform similarly or better, and may be applied in a wider range of separations of aromatics and aliphatics.…”

Section: Introductionmentioning

confidence: 99%

“…45,46 For this challenging task, many solvents do not show high-enough selectivity. 46 The solvent screening results of this study will include a comparison with Sulfolane™ to identify which of the bio-based solvents perform similarly or better, and may be applied in a wider range of separations of aromatics and aliphatics. Furthermore, for promising solvents, the application as an entrainer in another challenging separation problem, the olefin/paraffin separation, 47 will be investigated, for which n-heptane and 1-heptene were chosen as the model system.…”

Section: Introductionmentioning

confidence: 99%

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Bio-based solvents as entrainers for extractive distillation in aromatic/aliphatic and olefin/paraffin separation

Brouwer

Schuur

2020

Green Chem.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bio-based solvents as entrainers for extractive distillation in aromatic/aliphatic and olefin/paraffin separation

Brouwer

Schuur

2020

Green Chem.

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“…The final MCA purification is achieved by crystallization, where additional MCA is lost with the mother liquor containing 30 wt % MCA [8,9]. Therefore, the selection and design of a superior fluid separation process is of utmost importance [10].…”

Section: Introductionmentioning

confidence: 99%

Eco‐efficient Separation of Mono‐ and Dichloroacetic Acid by Thermally Coupled Extractive Distillation

et al. 2020

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Due to its high reactivity, monochloroacetic acid (MCA) is an essential intermediate used in the manufacturing of a wide variety of chemicals. Its industrial production process is highly energy-and capital-intensive, requiring costly purification steps to remove dichloroacetic acid (DCA) impurities. Here, an innovative eco-efficient process for MCA-DCA separation is proposed based on extractive distillation in a fully thermally coupled system (a dividing-wall column (DWC) or an equivalent side-rectifier configuration) using a new effective solvent: diethylene glycol dipentylether. The design was optimized by performing sensitivity analyses and varying key operating and design parameters. The study proves that separating MCA-DCA by an extractive DWC (or thermally coupled) is feasible, efficient, controllable, economic, and sustainable.

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“…energy‐demanding difficult separations employing techniques such as vacuum distillation, evaporation, stripping or extraction with harmful toxic solvents. The downstream processing would clearly benefit from more insights into fluid separations …”

Section: Introductionmentioning

confidence: 99%

Optimally designed reactive distillation processes for eco‐efficient production of ethyl levulinate

Vázquez-Castillo

Contreras-Zarazúa

Segovia‐Hernández

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: Ethyl levulinate (EL) is an important chemical that can be used as a bio-based replacement of fuel additives such as methyl tert-butyl ether (MTBE) and tert-amyl methyl ether (TAME). EL production from lactic acid and ethanol is a viable option, as both precursors can be obtained from biomass. However, the problem of EL production by esterification is that this reaction is hindered by the chemical equilibrium limitations and the boiling points ranking, which is not the most favorable. RESULTS:This study provides novel optimally designed reactive distillation (RD) processes for the production of EL, taking into account costs, environmental impact and safety. The thermally coupled RD process is the most appealing, with the lowest energy use (1.667 MJ kg −1 EL), minimal investment cost, major energy savings (up to 54.3% lower than other RD processes), reduced environmental impact (up to 51% lower ECO99 index value) and similar safety as other RD processes considered (less than 2% differences in the individual risk (IR) indicator). CONCLUSION:The multi-objective optimization approach used here showed its robustness, practicality and flexibility to provide multiple optimal designs of intensified processes that are economically attractive, environmentally friendly and inherently safe. The first separation column (RC-1) performs the separation of water by-product as distillate from the main product (EL) and the unreacted LA. The second separation column (RC-2) wileyonlinelibrary.com/jctb Process optimizationThis study uses a multi-objective meta-heuristic optimization algorithm based on differential evolution and tabu list (MODE-TL), further details of which can be found elsewhere. 34 This algorithm allows the comparison of multiple solutions of optimized designs in the terms of multiple objective functions, described hereafter.

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Insights into the selection and design of fluid separation processes

Cited by 60 publications

References 71 publications

Bio-based solvents as entrainers for extractive distillation in aromatic/aliphatic and olefin/paraffin separation

Bio-based solvents as entrainers for extractive distillation in aromatic/aliphatic and olefin/paraffin separation

Eco‐efficient Separation of Mono‐ and Dichloroacetic Acid by Thermally Coupled Extractive Distillation

Optimally designed reactive distillation processes for eco‐efficient production of ethyl levulinate

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