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Gasification of Solid Recovered Fuels with Variable Fractions of Polymeric Materials †
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Orientador(es)
Resumo(s)
Gasification is a promising thermochemical technology used to convert waste materials into energy with the introduction of low amounts of an oxidant agent, therefore producing an environmental impact that is lower when compared to incineration and landfilling. Moreover, gasification allows a sustainable management of wastes and reduces the use of fossil fuels responsible for the increment of greenhouse gases. This work aimed to perform gasification tests with solid recovered fuels (SRF) containing organic fractions mainly retrieved from construction and demolition wastes to assess the potential for energy conversion. Tests were conducted in a pilot-scale downdraft gasifier (maximum feedstock input of 22 kg/h) at c.a. 800 °C, using SRF samples containing different proportions of polymeric wastes ranging between 0 and 20 wt %. Gas and chars obtained as by-products were analysed to evaluate their properties and to establish valid pathways for their valorisation. The addition of polymeric wastes reduced char production but rose both tar and HCl concentrations in the gas. The SRF with 10 wt % of polymeric wastes generated the best results, producing the highest calorific value for the gas (3.5 MJ/Nm3) and the highest cold-gas efficiency (45%). Possible char applications include their use as catalysts for tar decomposition, or as an additive in construction materials. Gasification can therefore be considered a valid solution for the energetic valorisation of these SRFs.
Descrição
Funding Information:
This work was co-financed by Programa Operacional Potencial Humano and União Europeia-Fundo Social Europeu, by the project POCI-01-0145-FEDER-024020 (RDFGAS–Energy recovery of refuse-derived fuel and dehydrated sludge), co-financed by COMPETE 2020–Programa Operacional Competitividade e Internacionalização, Portugal 2020 and União Europeia through FEDER.
Publisher Copyright:
© 2022 by the authors.
Palavras-chave
construction and demolition waste gasification polymeric waste solid recovered fuel Renewable Energy, Sustainability and the Environment Building and Construction Fuel Technology Engineering (miscellaneous) Energy Engineering and Power Technology Energy (miscellaneous) Control and Optimization Electrical and Electronic Engineering SDG 7 - Affordable and Clean Energy