Production of gasohol by azeotropic distillation

A new azeotropic distillation process is presented to produce gasohol in an adequate concentration of bioethanol and isooctane, which emulates the properties of gasoline ready to use in conventional combustion engines. Since the mixing step is eliminated, there are significant economic savings which...

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Bibliographic Details
Published in:Canadian journal of chemical engineering 2024-06, Vol.102 (6), p.2122-2135
Main Authors: Avilés‐Martínez, Adriana, Patiño‐Herrera, Rosalba, Cruz‐Valdez, Jesús Alonso, Contreras‐Zarazúa, Gabriel, Rodríguez‐Olalde, Nancy Eloísa, Castro‐Montoya, Agustín Jaime
Format: Article
Language:English
Subjects:
Algorithms
bioethanol
biofuel
Biofuels
Carbon dioxide
Dehydration
DETL
Distillation
Ethanol
Evolutionary computation
Gasohol
Isooctane
process optimization
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Summary:A new azeotropic distillation process is presented to produce gasohol in an adequate concentration of bioethanol and isooctane, which emulates the properties of gasoline ready to use in conventional combustion engines. Since the mixing step is eliminated, there are significant economic savings which imply a competitive price of bioethanol. A comparison is provided with the traditional bioethanol dehydration process, extractive distillation. Both processes were simultaneously designed and optimized with differential evolution with a Tabu list algorithm (DETL) in order to reduce the total annual cost (TAC). Results showed that when obtaining E10 biofuel, a blend of up to 10% ethanol and 90% unleaded isooctane, via azeotropic distillation, over 40% of the TAC is saved compared to obtaining pure alcohol dehydrating through extractive distillation. Moreover, the reduction in carbon dioxide emissions results in an average of 27%.
ISSN:0008-4034
1939-019X
DOI:10.1002/cjce.25178