LAPSE:2023.24980
Published Article
LAPSE:2023.24980
Oxygen-Blown Gasification of Pulp Mill Bark Residues for Synthetic Fuel Production
Fredrik Weiland, Sandra Lundström, Yngve Ögren
March 28, 2023
Synthetic fuel production via gasification of residual biomass streams from the pulp and paper industry can be an opportunity for the mills to enable improved resource utilization and at the same time reduce the production of excess heat. This paper summarizes initial oxygen-blown gasification experiments with two bark residues from a European pulp and paper mill, i.e., a softwood bark and a hardwood bark. The gasification process was characterized by measuring syngas yields and process efficiency to find optimum operating conditions. In addition, impurities in the syngas and ash behavior were characterized. Maximum yields of CO and H2 were obtained from softwood bark and amounted to approximately 29 and 15 mol/kg fuel, respectively. Optimum cold gas efficiency was achieved at an oxygen stoichiometric ratio of λ = 0.40 and was approximately 76% and 70% for softwood bark and hardwood bark, respectively. Increased λ had a reducing effect on pollutants in the syngas, e.g., higher hydrocarbons, NH3, HCl, and soot. The situation for sulfur species was more complex. Evaluation of the bark ashes indicated that slag formation could start already from 800 °C. Furthermore, a non-intrusive laser diagnostics technique gave rapid feedback on the millisecond scale. Measured syngas temperature and water content were in good agreement with the applied reference methods.
Keywords
bark residues, gasification, online TDLAS process measurement, oxygen blown, pulp mill, Syngas
Suggested Citation
Weiland F, Lundström S, Ögren Y. Oxygen-Blown Gasification of Pulp Mill Bark Residues for Synthetic Fuel Production. (2023). LAPSE:2023.24980
Author Affiliations
Weiland F: RISE Energy Technology Center AB, Box 726, S-941 28 Piteå, Sweden [ORCID]
Lundström S: RISE Energy Technology Center AB, Box 726, S-941 28 Piteå, Sweden
Ögren Y: RISE Energy Technology Center AB, Box 726, S-941 28 Piteå, Sweden [ORCID]
Journal Name
Processes
Volume
9
Issue
1
First Page
pr9010163
Year
2021
Publication Date
2021-01-15
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr9010163, Publication Type: Journal Article
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LAPSE:2023.24980
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doi:10.3390/pr9010163
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Mar 28, 2023
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