Paper Technology International 2025 FlipBook - Journal - Page 23
Figure 4: Meva Energy’s thermochemical conversion technology converts biogenic residue, including sawdust, to renewable gas.
The gas can then be used to fuel power generation or to replace fossil gas consumption in industrial heat systems.
Site: So昀椀del Kisa, Sweden
Application: Renewable gas for tissue drying hoods
Gas production: 4,5 MW
Biochar output: 400 ton/year
Feedstock: Locally generated wood pellets made from
sawdust
CO2 reduction potential: 10.600 tonnes CO2 /year
(including biochar sequestration)
Commissioned: 2023
The use of fossil-free biosyngas from biomass gasi昀椀cation
to feed the burners of the hoods in the drying section of
the tissue plant allows CO2 emissions to be reduced by
8,500 tons per year as compared to the carbon footprint
from fossil LPG.
Environmental bene昀椀ts of biomass gasi昀椀cation in So昀椀del’s
tissue paper production
The adoption of biomass gasi昀椀cation in tissue paper
production provides substantial environmental bene昀椀ts, particularly
in the context of carbon footprint reduction. A Life Cycle Assessment
(LCA) of the biomass gasi昀椀cation process reveals that replacing
fossil LPG with biosyngas have the potential to reduce fossil CO2
emissions by up to 80-90%, depending on factors such as feedstock
type, gasi昀椀cation ef昀椀ciency, and system integration. (1)
In the speci昀椀c case of So昀椀del’s Kisa mill, the implementation
of biosyngas has the potential to reduce fossil CO2 emissions by up
to 8,500 tonnes per year compared with the consumption of fossil
LPG. This reduction represents a signi昀椀cant contribution to the mill’s
sustainability goals and aligns with EUs targets for carbon neutrality.
The Kisa plant utilizes biomass residues, such as sawdust
and wood 昀椀bers, sourced from a nearby sawmill as fuel. This
localized approach not only eliminates the need for fossil fuel
imports but also reduces transportation emissions and the energy
losses typically associated with fuel distribution and upgrading
processes.
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