Techno-economic evaluation of integrating torrefaction with anaerobic digestion

Tharaka Rama Krishna C. Doddapaneni, Ramasamy Praveenkumar, Henrik Tolvanen, Jukka Rintala, Jukka Konttinen

    Tutkimustuotos: ArtikkeliScientificvertaisarvioitu

    18 Sitaatiot (Scopus)

    Abstrakti

    In recent days, the interest on torrefaction is increasing owing to its ability to improve biomass properties to a level of competing with coal. However, its techno-economic feasibility still need to be optimized. Integrating torrefaction with other thermochemical and biochemical processes could be a feasible option to improve the performance of the torrefaction process. In that regard, this study evaluates the techno-economic feasibility of integrating the torrefaction with anaerobic digestion (AD). In addition, new process configurations were studied to identify the possible heat energy recovery options. Technical feasibility was tested through mass and energy balance at each process unit. The economic indicators such as net present value (€), minimum selling price and internal rate on return (%) were used to evaluate the economic performance. At 10 t/h of torrefied biomass pellets production capacity, the estimated bio-methane production from AD was 369 m3/h. The economic evaluation shows that the minimum selling price of the torrefied biomass to reach the breakeven could be reduced from 199 €/t for standalone torrefaction to 185 €/t in case of torrefaction integrated with AD. The sensitivity analysis shows that feedstock and total capital investment were the most sensitive input parameters. This study shows that integrating the torrefaction with AD has better technical and economic feasibility than standalone torrefaction.

    AlkuperäiskieliEnglanti
    Sivut272-284
    Sivumäärä13
    JulkaisuApplied Energy
    Vuosikerta213
    Varhainen verkossa julkaisun päivämäärätammik. 2018
    DOI - pysyväislinkit
    TilaJulkaistu - 2018
    OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

    Julkaisufoorumi-taso

    • Jufo-taso 2

    !!ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction
    • Energy(all)
    • Mechanical Engineering
    • Management, Monitoring, Policy and Law

    Sormenjälki

    Sukella tutkimusaiheisiin 'Techno-economic evaluation of integrating torrefaction with anaerobic digestion'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

    Siteeraa tätä