Innovative Hydrothermal Carbonization (HTC) Process for a Nordic Pulp and Paper Mill

Elina Mäki, Heidi Saastamoinen, Kristian Melin, Doris Matschegg, Bas Davidis, Jurjen Spekreijse, Vasiliki Tselepi, Dimitrios-Sotirios Kourkoumpas, Peter Axegård

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    2 Citations (Scopus)

    Abstract

    The common way of handling sludge from pulp and paper mill’s waste water treatment plant (WWTP) is combusting it at the site. Combustion is rather a way to dispose the sludge than take advantage of its energy content. This paper assesses the potential to convert the wet low-value feedstock, specifically WWTP’s secondary sludge, to a more valuable bioenergy product called hydrochar through hydrothermal carbonization (HTC) using C-Green’s innovative OxyPower HTC technology. We assess the integration to a Nordic sulphate pulp mill with different assumptions and compare the results to current situation of combusting sludge in the recovery boiler. The approach contains assessment of effects of integration to pulp mill’s mass and energy balance (e.g. power consumption), study of the markets, economic assessment and assessment of effects on greenhouse gas emissions.
    Original languageEnglish
    Title of host publication29th European Biomass Conference: Setting the course for a biobased economy
    Subtitle of host publicationProceedings of the International conference held online
    EditorsN. Scarlat, A. Grassi
    PublisherETA-Florence Renewable Energies
    Pages954-960
    Number of pages7
    ISBN (Print)978-88-89407-21-9
    Publication statusPublished - 29 Apr 2021
    MoE publication typeB3 Non-refereed article in conference proceedings
    Event29th European Biomass Conference and Exhibition, EUBCE 2021 - Online, Virtual, Online
    Duration: 26 Apr 202129 Apr 2021

    Publication series

    SeriesEuropean Biomass Conference and Exhibition Proceedings
    ISSN2282-5819

    Conference

    Conference29th European Biomass Conference and Exhibition, EUBCE 2021
    CityVirtual, Online
    Period26/04/2129/04/21

    Keywords

    • bioenergy
    • hydrothermal carbonization
    • wastewater treatment
    • sludge
    • pulp and paper industry
    • retrofitting

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