Development of Extractive Distillation Processes for Close-Boiling Polar Systems
Extractive distillation is a distillation technique that can be applied for separation of azeotropic mixtures and mixtures of close-boiling compounds. In extractive distillation a solvent is applied to increase the relative volatility by interacting with the components in the system, typically with...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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AIDIC Servizi S.r.l.
2018-10-01
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| Series: | Chemical Engineering Transactions |
| Online Access: | https://www.cetjournal.it/index.php/cet/article/view/9212 |
| _version_ | 1818672630816833536 |
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| author | Lisette Sprakel Peter Kamphuis Anna Nikolova Boelo Schuur |
| author_facet | Lisette Sprakel Peter Kamphuis Anna Nikolova Boelo Schuur |
| author_sort | Lisette Sprakel |
| collection | DOAJ |
| description | Extractive distillation is a distillation technique that can be applied for separation of azeotropic mixtures and mixtures of close-boiling compounds. In extractive distillation a solvent is applied to increase the relative volatility by interacting with the components in the system, typically with a difference in affinity for the components. To study the relation between the affinity strength and the effect of the solvent on the relative volatility, the research here presented focused on a solvent selection for the separation of two close-boiling, highly polar binary systems. 1) The acids valeric acid and its isomer 2-methylbutyric acid (? ?????????? =10°C, ??? ?? ?? = 0.1), and 2) the bases diethyl methylamine and diisopropylether (? ?????????? =3-6°C, ??? ?? ?? ˜14). For both the acids and the bases the binary VLE-data and ternary data with solvents were measured using an ebulliometer. The solvents resulted in negative deviations of Raoult’s law. The solvent selection was performed based on literature, followed by an experimental evaluation of the possible solvent types. For the valeric acid mixture the solvent 2-methylbutyrate, which is similar in structure to the components in the mixture, appeared to be most promising. In the ether-amine mixture a series of hydrogen bonding solvents with a hydroxyl group were found most promising, and also the regeneration of the solvent was an important factor in the study. |
| first_indexed | 2024-12-17T07:42:57Z |
| format | Article |
| id | doaj.art-2ad1a5f1d13c443ca079f6bd2dc46aea |
| institution | Directory Open Access Journal |
| issn | 2283-9216 |
| language | English |
| last_indexed | 2024-12-17T07:42:57Z |
| publishDate | 2018-10-01 |
| publisher | AIDIC Servizi S.r.l. |
| record_format | Article |
| series | Chemical Engineering Transactions |
| spelling | doaj.art-2ad1a5f1d13c443ca079f6bd2dc46aea2022-12-21T21:58:06ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162018-10-016910.3303/CET1869089Development of Extractive Distillation Processes for Close-Boiling Polar SystemsLisette SprakelPeter KamphuisAnna NikolovaBoelo SchuurExtractive distillation is a distillation technique that can be applied for separation of azeotropic mixtures and mixtures of close-boiling compounds. In extractive distillation a solvent is applied to increase the relative volatility by interacting with the components in the system, typically with a difference in affinity for the components. To study the relation between the affinity strength and the effect of the solvent on the relative volatility, the research here presented focused on a solvent selection for the separation of two close-boiling, highly polar binary systems. 1) The acids valeric acid and its isomer 2-methylbutyric acid (? ?????????? =10°C, ??? ?? ?? = 0.1), and 2) the bases diethyl methylamine and diisopropylether (? ?????????? =3-6°C, ??? ?? ?? ˜14). For both the acids and the bases the binary VLE-data and ternary data with solvents were measured using an ebulliometer. The solvents resulted in negative deviations of Raoult’s law. The solvent selection was performed based on literature, followed by an experimental evaluation of the possible solvent types. For the valeric acid mixture the solvent 2-methylbutyrate, which is similar in structure to the components in the mixture, appeared to be most promising. In the ether-amine mixture a series of hydrogen bonding solvents with a hydroxyl group were found most promising, and also the regeneration of the solvent was an important factor in the study.https://www.cetjournal.it/index.php/cet/article/view/9212 |
| spellingShingle | Lisette Sprakel Peter Kamphuis Anna Nikolova Boelo Schuur Development of Extractive Distillation Processes for Close-Boiling Polar Systems Chemical Engineering Transactions |
| title | Development of Extractive Distillation Processes for Close-Boiling Polar Systems |
| title_full | Development of Extractive Distillation Processes for Close-Boiling Polar Systems |
| title_fullStr | Development of Extractive Distillation Processes for Close-Boiling Polar Systems |
| title_full_unstemmed | Development of Extractive Distillation Processes for Close-Boiling Polar Systems |
| title_short | Development of Extractive Distillation Processes for Close-Boiling Polar Systems |
| title_sort | development of extractive distillation processes for close boiling polar systems |
| url | https://www.cetjournal.it/index.php/cet/article/view/9212 |
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