Intensified alternative to purify methyl-Ethyl ketone in a framework of green process
| Autor: | Eduardo Sánchez-Ramírez, Heriberto Alcocer-García, Juan Gabriel Segovia-Hernández, Gabriel Contreras-Zarazúa, Juan José Quiroz-Ramírez, Salvador Hernández-Castro |
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| Rok vydání: | 2021 |
| Předmět: |
Ketone
020209 energy 02 engineering and technology Individual risk Multi-objective optimization Industrial and Manufacturing Engineering law.invention chemistry.chemical_compound 020401 chemical engineering law 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering Electrical and Electronic Engineering Process engineering Distillation Civil and Structural Engineering chemistry.chemical_classification business.industry Mechanical Engineering Building and Construction Pollution Controllability General Energy chemistry Scientific method Inherent safety Environmental science business Isobutyraldehyde |
| Zdroj: | Energy. 220:119641 |
| ISSN: | 0360-5442 |
| Popis: | Methyl-Ethyl Ketone (MEK) is a promising bulk chemical due to its several applications. MEK can be produced by hydrogenation of 2, 3-Butanediol, a chemical previously produced by fermentation. As hydrogenation results, the output is composed of water, isobutyraldehyde, 2, 3-Butanediol, and Methyl-ethyl ketone. Because of the thermodynamic interactions, two azeotropes are formed; consequently, the purification of that mixture is challenging. Current needs promote the generation of alternatives with good economic and environmental performance, however, inherent safety and good controllability must also be accomplished. In this study an intensified process is proposed to reduce the energy investment for MEK purification. The alternative is a hybrid process that combines the advantages of using a liquid-liquid extraction column for handling the azeotropes aforementioned. Additionally, this proposal is compared with four alternatives previously proposed based only on distillation. All alternatives were modeled in Aspen Plus and were optimized considering four targets, the total annual cost, the eco-indicator 99, the individual risk, and the condition number as economic, environmental, safety and controllability indexes, respectively. As a result, interesting trends among objectives and design variables were found. Additionally, the intensified design reported an energy investment of 6.78 MJfuel/kgMEK, and the best pure distillation alternative 35.5 MJfuel/KgMEK. |
| Databáze: | OpenAIRE |
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