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Nitrogen-Free Co-Gasification of Fermentation Residues

Author

Listed:
  • Clemens Schmittmann

    (Thermoprocesses and Emission Control in Waste Management and Recycling Teaching and Research Unit, RWTH Aachen University, 52062 Aachen, Germany)

  • Felix Öffner

    (LiPRO Energy GmbH & Co. KG, 26203 Wardenburg, Germany)

  • Peter Quicker

    (Thermoprocesses and Emission Control in Waste Management and Recycling Teaching and Research Unit, RWTH Aachen University, 52062 Aachen, Germany)

Abstract

The limited usage of fermentation residues, due to increasingly stringent legal requirements, demands novel routes of utilization for these feedstocks. To the best of our knowledge, for the first time, a mixture of fermentation residues and wood chips is used as feedstock in a fixed-bed gasifier, using only O 2 /CO 2 mixtures as gasifying agent. The maximum O 2 concentration achieved was 31.6 Vol.-%. Pronounced process stability was achieved with a cold gas efficiency of about 94%, possibly due to CO 2 conversion within the process. The heating value of the produced synthesis gas was 8.5 MJ/m 3 i.N.dry , with increased amounts of carbon monoxide and methane when compared to air-blown operations.

Suggested Citation

  • Clemens Schmittmann & Felix Öffner & Peter Quicker, 2025. "Nitrogen-Free Co-Gasification of Fermentation Residues," Energies, MDPI, vol. 18(9), pages 1-12, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:9:p:2173-:d:1641423
    as

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