Publication | Peer reviewed papers | Thermische Vergasung und Gasreinigung

Integration of dual fluidized bed steam gasification into the pulp and paper industry

Published 23 December 2021

Citation: Kuba M, Benedikt F, Fürsatz K, Fuchs J, Demuth M, Aichernig C, Arpa L, Hofbauer H. Integration of dual fluidized bed steam gasification into the pulp and paper industry. Biomass Conversion and Biorefinery. 23 Dec 2021


The pulp and paper industry represents an industry sector which is characterised by its already high degree of sustainability. Biomass is a renewable input material, and typically highly developed recovery cycles minimise the loss of chemicals used in the pulping process. However, certain parts of the recovery cycle are still operated on fossil fuels. This study deals with the substitution of the fossil-based gaseous fuel with product gas from biomass gasification.

Gasification experiments have shown that bark available at pulp and paper mills is suitable to produce a product gas via dual fluidised bed steam gasification as a promising substitute for natural gas. Based on the comparison of process layouts regarding the separation of non-process elements, separation efficiency is derived for different setups. To ensure operational security of the chemical recovery cycle, comprehensive gas cleaning including heat exchangers, a particle filter, and a liquid scrubber unit is advised. The gas flow of fuel gas into the gas burner is increased as the heating value of the product gas is accordingly lower in comparison to natural gas. Furthermore, adaptions of the gas burner might be necessary to address the earlier ignition of the H2-rich product gas compared to natural gas.

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