Pyrolysis of plastics: dehalogenation via stepwise pyrolysis and metal sorbents

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62243136%3A_____%2F22%3AN0000026" target="_blank" >RIV/62243136:_____/22:N0000026 - isvavai.cz</a>
Result on the web
<a href="https://www.icct.cz/cs/minule-icct/2022" target="_blank" >https://www.icct.cz/cs/minule-icct/2022</a>
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Pyrolysis of plastics: dehalogenation via stepwise pyrolysis and metal sorbents
Original language description
In order to process pyrolysis products into new polymers, it is necessary to remove halogens, especially Cl and Br, that may cause corrosion of technology, inactivation of catalysts, and eterioration of products. This study used different pyrolysis settings and sorbents to decrease the Cl content below the set limit of 10 ppm. It was observed that it is not feasible to use sorbents directly in the reactor (in-situ) as the captured Cl is released over higher temperatures yielding even more Cl in the products. Introducing the step at 350 °C (stepwise pyrolysis) proved to be a crucial part of the process. Required Cl content was reached via a combination of stepwise pyrolysis, reflux extension, and sorbents (Ca(OH)2, Fe304-Si) in a separated bed (ex-situ) at 300 °C. Results have direct implications for designing an efficient pilot plant or modifying current technologies without a dehalogenation procedure.
Czech name
—
Czech description
—

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

Similar results(10)