Dechlorination during pyrolysis of plastics: Effect of municipal plastic waste composition
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F23%3A43898317" target="_blank" >RIV/44555601:13520/23:43898317 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0378382023001716#s0100" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0378382023001716#s0100</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.fuproc.2023.107823" target="_blank" >10.1016/j.fuproc.2023.107823</a>
Alternative languages
Result language
angličtina
Original language name
Dechlorination during pyrolysis of plastics: Effect of municipal plastic waste composition
Original language description
In order to close the loop in chemical recycling via pyrolysis, products must meet strict limits for halogen content to be used in conventional petrochemical processes. By integrating dechlorination as an integral part of pyrolysis, results show that the efficiency of dechlorination, both via stepwise pyrolysis and dechlorination agents, is significantly decreased in the presence of PET or cellulose in the feedstock. Product analysis showed that Cl reacts with formed oxygenated substances, some of which remain in the reactor during the 1st step at 350 oC and subsequently pass into the final liquid product. This increases the requirements for applied dechlorinating agents during the 2nd pyrolysis step. Novel agents have to therefore cope with a wide range of chlorinated hydrocarbons. By combining acidic ?-zeolite with alkali hydrotalcite in a 1:1 ratio, a synergic effect towards dechlorination was observed, increasing individual efficiency by about 12% and 6%, respectively. Combining stepwise pyrolysis, which removed 38% of Cl on average, with the mentioned mixture of agents, 95% efficiency and 12.2 ? 1.2 ppm of Cl were obtained in the final liquid product. Such a level of dechlorination may be sufficient, considering that the pyrolysis liquid will be diluted in conventional petrochemical feedstocks.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10406 - Analytical chemistry
Result continuities
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)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Fuel Processing Technology
ISSN
0378-3820
e-ISSN
1873-7188
Volume of the periodical
neuveden
Issue of the periodical within the volume
248
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
29
Pages from-to
—
UT code for WoS article
001002383700001
EID of the result in the Scopus database
—