Selection of mixed solvent for crude caprolactam extraction_II

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Selection of mixed solvent for crude caprolactam extraction_II

Popis výsledku v původním jazyce

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].

Název v anglickém jazyce

Selection of mixed solvent for crude caprolactam extraction_II

Popis výsledku anglicky

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].

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20400 - Chemical engineering

Projekt

<a href="/cs/project/FV40040" target="_blank" >FV40040: Kontinuální rafinace kaprolaktamu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů