Dechlorination during pyrolysis of plastics: The potential of stepwise pyrolysis in combination with metal sorbents

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F22%3A43896879" target="_blank" >RIV/44555601:13520/22:43896879 - isvavai.cz</a>

Alternative codes found

RIV/62243136:_____/22:N0000013

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0378382022000662" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0378382022000662</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fuproc.2022.107226" target="_blank" >10.1016/j.fuproc.2022.107226</a>

Result language

angličtina

Original language name

Dechlorination during pyrolysis of plastics: The potential of stepwise pyrolysis in combination with metal sorbents

Original language description

Pyrolysis liquid is a valuable product that could be re-introduced into the refinery or petrochemical industry following circular economy principles. However, halogens in the liquid product hinder this approach by causing corrosion of subsequent technologies. Dehalogenation is, therefore, a necessary step that aims to reduce halogen content below the set limit of 10 ppm. Research on this topic often includes contradictory results, and dehalogenation is still not widely used in large-scale operations. The present study explores the possibility of chlorine removal from a model plastic mixture, including 10% PVC utilizing various pyrolysis conditions, stepwise pyrolysis, and sorbents based on Ca(OH)2, Fe3O4, and Fe. Results suggest that it is not suitable to use sorbents in-situ as the captured Cl in the form of chlorides was released at higher temperatures increasing the chlorine content in the liquid products. The limit of 10 ppm for refinery introduction was reached by combining stepwise pyrolysis and sorbents ex-situ. Fe3O4 displayed the best efficiency, while its reduced form was the most efficient considering its low surface area. The obtained results are a necessary preliminary step for the development of a reliable dehalogenation procedure for municipal plastic waste being underway. ? 2022 Elsevier B.V.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20402 - Chemical process engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2022

Confidentiality

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

Name of the periodical

Fuel Processing Technology

ISSN

0378-3820

e-ISSN

0378-3820

Volume of the periodical

231

Issue of the periodical within the volume

107226

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

1-11

UT code for WoS article

000795076400007

EID of the result in the Scopus database

2-s2.0-85125728429