Olivine as a tar removal catalyst during fluidized bed gasification of plastic waste

Natural olivine was used as bed material during the gasification of plastic waste in a pilot-scale bubbling fluidized bed reactor. The results indicate that it works as an excellent in-situ tar reduction agent, considerably improving the quality of the gas produced, in terms of low tar content, high...

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Bibliographic Details
Published in:AIChE journal 2008-06, Vol.54 (6), p.1656-1667
Main Authors: Mastellone, Maria Laura, Arena, Umberto
Format: Article
Language:English
Subjects:
Applied sciences
Catalysis
Catalytic reactions
Chemical engineering
Chemistry
Exact sciences and technology
Fluidization
fluidized beds
gas cleaning
gasification
General and physical chemistry
olivine
plastic waste
Reactors
tar
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:Natural olivine was used as bed material during the gasification of plastic waste in a pilot-scale bubbling fluidized bed reactor. The results indicate that it works as an excellent in-situ tar reduction agent, considerably improving the quality of the gas produced, in terms of low tar content, high hydrogen volume fraction and large syngas yield. The phenomena concurring to the activation of the catalyst are described together with those that can contribute to deactivate it. A phenomenological description of the different stages occurring during gasification of plastic waste in a fluidized bed of olivine particles is also reported. © 2008 American Institute of Chemical Engineers AIChE J, 2008
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.11497