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Ethanol dehydration by absorption and biodiesel production by reactive distillation: An innovative integrated process
- Source :
- Biomass and Bioenergy. 154:106263
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- An innovative integrated process of ethanol dehydration and ethylic biodiesel production based on absorption and reactive distillation processes was demonstrated by experimental validated simulation and optimization using Aspen Plus® and Statistica® software, respectively. Glycerol, a byproduct of the transesterification of triacylglycerols, was adopted as solvent for ethanol purification. Experimental and simulated results of the absorption process step were compared and showed no significant difference from t-test with 95% of confidence level. The optimal conditions of the processes were obtained using a multivariate analysis. For the absorption process, the optimized parameters were solvent feed stream temperature, T = 27 °C; number of stages, N = 6; and solvent-to-feed ratio, S / F = 1.5, 1.4 and 1.0 for ethanol mass fractions on feed stream of 0.8800, 0.9380 and 0.9910. The optimal parameters of the reactive distillation column (RDC) for biodiesel production were ethanol-to-oil molar ratio, M R = 12; N = 6; total reflux ratio; and residence time to number of stages ratio, t / N = 8 min/stage. The integrated process produced anhydrous ethanol with mass purity above 99.9%, oil conversion ( X o i l ) above 99%, and biodiesel yield of 98%. Moreover, X o i l > 96.5% was also obtained for a lower value of M R = 7 adopting t / N = 8 min/stage. Finally, the integrated process proved to be a potential economically attractive technology for ethylic biodiesel production, since reactive distillation and absorption columns were coupled based on the concept of process intensification.
- Subjects :
- Fractional distillation
Biodiesel
Renewable Energy, Sustainability and the Environment
Analytical chemistry
Forestry
Transesterification
medicine.disease
chemistry.chemical_compound
chemistry
Yield (chemistry)
Biodiesel production
Reactive distillation
Glycerol
medicine
Dehydration
Waste Management and Disposal
Agronomy and Crop Science
Subjects
Details
- ISSN :
- 09619534
- Volume :
- 154
- Database :
- OpenAIRE
- Journal :
- Biomass and Bioenergy
- Accession number :
- edsair.doi...........b39e8fa25f9baee02f401168120ac4c6