Coupling Solvent Extraction Units to Cyclic Adsorption Units
The possibility of regenerating the solvent of extraction units by cyclic adsorption was analyzed. This combination seems convenient when extraction is performed with a high solvent-to-impurity ratio, making other choices of solvent regeneration, typically distillation, unattractive. To our knowledg...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/1620218 |
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| author | Mariana Busto Enrique Eduardo Tarifa Carlos Román Vera |
| author_facet | Mariana Busto Enrique Eduardo Tarifa Carlos Román Vera |
| author_sort | Mariana Busto |
| collection | DOAJ |
| description | The possibility of regenerating the solvent of extraction units by cyclic adsorption was analyzed. This combination seems convenient when extraction is performed with a high solvent-to-impurity ratio, making other choices of solvent regeneration, typically distillation, unattractive. To our knowledge, the proposed regeneration scheme has not been considered before in the open literature. Basic relations were developed for continuous and discontinuous extraction/adsorption combinations. One example, deacidification of plant oil with alcohol, was studied in detail using separate experiments for measuring process parameters and simulation for predicting performance at different conditions. An activated carbon adsorbent was regenerated by thermal swing, making cyclic operation possible. When extracting the acid with methanol in a spray column, feed = 4 L min−1, solvent = 80 L min−1, feed impurity level 140 mmol L−1, and extract concentration 7.6 mmol L−1, the raffinate reaches a purity of 1.2 mmol L−1, the solvent being regenerated cyclically in the adsorber (364 kg) to an average of 0.7 mmol L−1. Regeneration of the solvent by cyclic adsorption had a low heat duty. Values of 174 kJ per litre of solvent compared well with the high values for vaporization of the whole extract phase (1011 kJ L−1). |
| format | Article |
| id | doaj-art-7d8c5b3ba0e6416ab56db00d4423895f |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
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| series | International Journal of Chemical Engineering |
| spelling | doaj-art-7d8c5b3ba0e6416ab56db00d4423895f2025-02-03T06:00:36ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782018-01-01201810.1155/2018/16202181620218Coupling Solvent Extraction Units to Cyclic Adsorption UnitsMariana Busto0Enrique Eduardo Tarifa1Carlos Román Vera2Institute of Research on Catalysis and Petrochemistry, INCAPE, FIQ-UNL, CONICET, Collecting Ring, National Road 168 Km 0, El Pozo, 3000 Santa Fe, ArgentinaFaculty of Chemical Engineering, Universidad Nacional de Jujuy, CONICET, Ítalo Palanca No. 10, San Salvador de Jujuy, ArgentinaInstitute of Research on Catalysis and Petrochemistry, INCAPE, FIQ-UNL, CONICET, Collecting Ring, National Road 168 Km 0, El Pozo, 3000 Santa Fe, ArgentinaThe possibility of regenerating the solvent of extraction units by cyclic adsorption was analyzed. This combination seems convenient when extraction is performed with a high solvent-to-impurity ratio, making other choices of solvent regeneration, typically distillation, unattractive. To our knowledge, the proposed regeneration scheme has not been considered before in the open literature. Basic relations were developed for continuous and discontinuous extraction/adsorption combinations. One example, deacidification of plant oil with alcohol, was studied in detail using separate experiments for measuring process parameters and simulation for predicting performance at different conditions. An activated carbon adsorbent was regenerated by thermal swing, making cyclic operation possible. When extracting the acid with methanol in a spray column, feed = 4 L min−1, solvent = 80 L min−1, feed impurity level 140 mmol L−1, and extract concentration 7.6 mmol L−1, the raffinate reaches a purity of 1.2 mmol L−1, the solvent being regenerated cyclically in the adsorber (364 kg) to an average of 0.7 mmol L−1. Regeneration of the solvent by cyclic adsorption had a low heat duty. Values of 174 kJ per litre of solvent compared well with the high values for vaporization of the whole extract phase (1011 kJ L−1).http://dx.doi.org/10.1155/2018/1620218 |
| spellingShingle | Mariana Busto Enrique Eduardo Tarifa Carlos Román Vera Coupling Solvent Extraction Units to Cyclic Adsorption Units International Journal of Chemical Engineering |
| title | Coupling Solvent Extraction Units to Cyclic Adsorption Units |
| title_full | Coupling Solvent Extraction Units to Cyclic Adsorption Units |
| title_fullStr | Coupling Solvent Extraction Units to Cyclic Adsorption Units |
| title_full_unstemmed | Coupling Solvent Extraction Units to Cyclic Adsorption Units |
| title_short | Coupling Solvent Extraction Units to Cyclic Adsorption Units |
| title_sort | coupling solvent extraction units to cyclic adsorption units |
| url | http://dx.doi.org/10.1155/2018/1620218 |
| work_keys_str_mv | AT marianabusto couplingsolventextractionunitstocyclicadsorptionunits AT enriqueeduardotarifa couplingsolventextractionunitstocyclicadsorptionunits AT carlosromanvera couplingsolventextractionunitstocyclicadsorptionunits |