| Full text | |
| Author(s): |
Biasi, Lilian C. K.
[1]
;
Romano, Ana L. R.
[1]
;
Zemp, Roger J.
[2]
;
Heinkenschloss, Matthias
[3]
;
Batista, Fabio R. M.
[4]
;
Meirelles, Antonio J. A.
[1]
Total Authors: 6
|
| Affiliation: | [1] Univ Estadual Campinas, Lab Extract Appl Thermodynam & Equilibrium, Dept Food Engn, Sch Food Engn, ExTrAE, UNICAMP, BR-13083862 Campinas, SP - Brazil
[2] Univ Estadual Campinas, UNICAMP, Dept Chem Syst Engn, Sch Chem Engn, BR-13083862 Campinas, SP - Brazil
[3] Rice Univ, Dept Computat & Appl Math, Houston, TX 77005 - USA
[4] Univ Sao Paulo, Dept Chem Engn, USP, Sch Engn Lorena, BR-12602810 Sao Paulo - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Industrial & Engineering Chemistry Research; v. 60, n. 43, p. 15690-15705, NOV 3 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Distillation efficiency can be improved by columns with multiple phase divisions, also known as parastillation (vapor division) and metastillation (liquid division). Although, previous studies demonstrate that these configurations improve separation efficiency, little is known about the mechanisms that cause this improvement. These mechanisms are elucidated through exergetic and driving force analyses. Methanol-ethanol and multicomponent hydrated bioethanol purifications were investigated. Thermodynamic efficiency and exergy losses are improved when the number of phase divisions is increased. In methanol-ethanol distillation, the increase of the number of phase divisions from one to eight decreases both the operational costs and CO2 emissions by 34% and increases thermodynamic efficiency by 23%. Considering a more feasible number of phase divisions, from the construction point of view, four divisions improve operational costs by 31%, over one division. In the production of hydrated bioethanol, four-vapor divisions lead to a reduction in energy consumption by 18% when compared with conventional distillation. This study shows that it is possible to reduce operating costs to a value close to the theoretical minimum, without a significant increase in capital costs. This observation contrasts with the conventional process, in which the reduction in operating costs necessarily leads to higher distillation columns and capital costs. (AU) | |
| FAPESP's process: | 14/21252-0 - Equilibrium and production processes of biofuels and bioproducts |
| Grantee: | Antonio José de Almeida Meirelles |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales |
| Grantee: | Roberto de Campos Giordano |
| Support Opportunities: | Program for Research on Bioenergy (BIOEN) - Thematic Grants |