Products from the high temperature pyrolysis of RDF at slow and rapid heating rates

Chidi E. Efika, Jude Onwudili, Paul T Williams

Research output: Contribution to journalArticle

Abstract

The high-temperature pyrolysis behaviour of a sample of refuse derived fuel (RDF) as a model of municipal solid waste (MSW) was investigated in a horizontal tubular reactor between 700 and 900 °C, at varying heating rates, and at an extended vapour residence time. Experiments were designed to evaluate the influence of process conditions on gas yields as well as gas and oil compositions. Pyrolysis of RDF at 800 °C and at rapid heating rate resulted in the gas yield with the highest CV of 24.8 MJ m−3 while pyrolysis to 900 °C at the rapid heating rate generated the highest gas yield but with a lower CV of 21.3 MJ m−3. A comparison of the effect of heating rates on oil products revealed that the oil from slow pyrolysis, contained higher yields of more oxygenates, alkanes (C8–C39) and alkenes (C8–C20), while the oil from rapid pyrolysis contained more aromatics, possibly due to the promotion of Diels–Alder-type reactions.
Original languageEnglish
Pages (from-to)14-22
Number of pages9
JournalJournal of Analytical and Applied Pyrolysis
Volume112
DOIs
Publication statusPublished - Mar 2015

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Refuse derived fuels
Heating rate
Pyrolysis
Oils
Gases
Temperature
Alkanes
Municipal solid waste
Alkenes
Paraffins
Olefins
Vapors
Chemical analysis
Experiments

Bibliographical note

© 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Cite this

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title = "Products from the high temperature pyrolysis of RDF at slow and rapid heating rates",
abstract = "The high-temperature pyrolysis behaviour of a sample of refuse derived fuel (RDF) as a model of municipal solid waste (MSW) was investigated in a horizontal tubular reactor between 700 and 900 °C, at varying heating rates, and at an extended vapour residence time. Experiments were designed to evaluate the influence of process conditions on gas yields as well as gas and oil compositions. Pyrolysis of RDF at 800 °C and at rapid heating rate resulted in the gas yield with the highest CV of 24.8 MJ m−3 while pyrolysis to 900 °C at the rapid heating rate generated the highest gas yield but with a lower CV of 21.3 MJ m−3. A comparison of the effect of heating rates on oil products revealed that the oil from slow pyrolysis, contained higher yields of more oxygenates, alkanes (C8–C39) and alkenes (C8–C20), while the oil from rapid pyrolysis contained more aromatics, possibly due to the promotion of Diels–Alder-type reactions.",
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doi = "10.1016/j.jaap.2015.01.004",
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Products from the high temperature pyrolysis of RDF at slow and rapid heating rates. / Efika, Chidi E.; Onwudili, Jude; Williams, Paul T .

In: Journal of Analytical and Applied Pyrolysis, Vol. 112, 03.2015, p. 14-22.

Research output: Contribution to journalArticle

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AU - Efika, Chidi E.

AU - Onwudili, Jude

AU - Williams, Paul T

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