Selection of mixed solvent for crude caprolactam extraction_II

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F24%3A10256135" target="_blank" >RIV/61989100:27710/24:10256135 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Selection of mixed solvent for crude caprolactam extraction_II
Original language description
Contribution (POSTER) on 50th International Conference of Slovak Society of Chemical Engineering – SSCHE 2024, 20.5.-24.5.2024, Tatranske Matliare, Slovakia.Caprolactam (CPL) is the precursor of Nylon 6, a widely used synthetic polymer. Most of the worldwide production of caprolactam is synthetized from cyclohexanone by the Beckmann rearrangement. The purity requirements of caprolactam are extremely stringent because even a small amount of impurities greatly affect the physical-mechanical properties of Nylon 6. Since both polar and nonpolar impurities are present in the crude caprolactam, pure caprolactam is obtained in the forward-extraction using a nonpolar organic solvent, such as trichlorethylene, benzene or toluene followed by back-extraction with water and multistage distillation. Although carcinogenic trichlorethylene (TCE) is often used in caprolactam forward-extraction, its replacement with an alternative solvent has not been published yet. Promising alternative to TCE are mixed solvents of alcohol and alkane/cycloalkane, where alcohol ensures high solubility of CPLand the presence of alkanes decreases the mutual solubility with water [1, 2].
Czech name
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Czech description
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Project
<a href="/en/project/FV40040" target="_blank" >FV40040: Continual purification of Caprolactam.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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