Continuous Lumped Hydrocracking Kinetics of Plastic (Polyethylene) Pyrolysis Oil Blended with Gas Oil
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Le résumé fourni par la source
The kinetics of coprocessing plastic waste into existing refinery infrastructure is challenging due to the complexity of the composition and its impact on catalyst deactivation. This work investigates the kinetics of cohydrocracking mixtures composed of vacuum gas oil and plastic pyrolysis oil (derived from waste polyethylene pyrolysis) over a NiW/HY catalyst in a laboratory-scale semibatch reactor. We used the continuous lumping approach (based on population balance) for the kinetic modeling, given its flexibility to model the entire product distribution and population dynamics, and incorporated a deactivation function. Deactivation was promoted by longer reaction times (i.e., beyond 0.5 h), heavier feed components (i.e., 350 + °C TBP fraction), and lower temperatures (e.g., 370 °C compared to 440 °C). Two types of expressions were considered for the deactivation function: coke-dependent and agnostic, time-based decay models. Both types of deactivations reproduced the experimental distillation curves, but the time-dependent model led to parameters that align better with expected hydrocracking behavior. Our findings highlight the feasibility of continuous lumped models as a tool for plastic valorization process design and optimization and the necessity of paying attention to the deactivation function to robustify these kinetic models.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Continuous Lumped Hydrocracking Kinetics of Plastic (Polyethylene) Pyrolysis Oil Blended with Gas Oil
- Date Crossref
- 30/07/2025
- Éditeur
- American Chemical Society (ACS)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Catalytic Materials (United States) pays non établi dans la noticeEntreprise
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King Abdullah University of Science and Technology pays non établi dans la noticeUniversité ou école supérieure
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University of the Basque Country Department of Chemical Engineering pays non établi dans la noticeUniversité ou école supérieure
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Multiscale Reaction Engineering pays non établi dans la noticeInstitution
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Chemical Engineering Program pays non établi dans la noticeInstitution
Catalytic Materials (United States), King Abdullah University of Science and Technology et Department of Chemical Engineering — University of the Basque Country, avec 2 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.