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Gasification of Solid Recovered Fuels with Variable Fractions of Polymeric Materials

Author

Listed:
  • Octávio Alves

    (VALORIZA—Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal)

  • Luís Calado

    (Polytechnic Institute of Portalegre, 7300-110 Portalegre, Portugal)

  • Roberta M. Panizio

    (VALORIZA—Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal
    MEtRICs—Mechanical Engineering and Resource Sustainability Center, Department of Sciences and Technology of Biomass, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal)

  • Catarina Nobre

    (VALORIZA—Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal)

  • Eliseu Monteiro

    (VALORIZA—Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal
    Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal)

  • Paulo Brito

    (VALORIZA—Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal)

  • Margarida Gonçalves

    (VALORIZA—Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal
    MEtRICs—Mechanical Engineering and Resource Sustainability Center, Department of Sciences and Technology of Biomass, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal)

Abstract

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/Nm 3 ) 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.

Suggested Citation

  • Octávio Alves & Luís Calado & Roberta M. Panizio & Catarina Nobre & Eliseu Monteiro & Paulo Brito & Margarida Gonçalves, 2022. "Gasification of Solid Recovered Fuels with Variable Fractions of Polymeric Materials," Energies, MDPI, vol. 15(21), pages 1-19, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:8139-:d:959680
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    References listed on IDEAS

    as
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