Carbonisation as a pre-treatment for rdf wastes prior to gasification

Octávio Alves, Roberta Mota Panizio, Maria Margarida Gonçalves, Jeysa Passos, Luís Calado, Eliseu Monteiro, Paulo S. D. Brito

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The present work is intended to evaluate carbonisation as a pre-treatment for heterogeneous wastes containing polymeric fractions, before their gasification for energy production. Carbonisation had an upgrading effect in the raw wastes by yielding chars with higher apparent density and an improved behaviour during feeding operations. The performance of the gasification process was compared for the raw wastes and the corresponding biochars. The results obtained indicate that carbonisation helped to improve this performance by increasing the calorific value of syngas, and the process efficiency. Gasification of the chars produced less tars and gaseous HCl which is a positive effect concerning maintenance operations and overall costs. Therefore, the carbonisation pre-treatment can be seen as a valid option to be integrated in a gasification process to convert wastes into energy especially for low density wastes with high chlorine contents.

Original languageEnglish
Title of host publicationWastes: Solutions, Treatments and Opportunities III - Selected papers from the 5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019
EditorsCândida Vilarinho, Fernando Castro, Margarida Gonçalves, Ana Luísa Fernando
PublisherCRC Press/Balkema
Pages543-548
Number of pages6
ISBN (Print)9780367257774
DOIs
Publication statusPublished - 2020
Event5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019 - Costa da Caparica, Portugal
Duration: 4 Sep 20196 Sep 2019

Conference

Conference5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019
CountryPortugal
CityCosta da Caparica
Period4/09/196/09/19

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