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Demonstration of a Top-Lit Updraft Based Pyrolytic Burner with Low Emission Operation and Automatic Process Control

Author

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  • Dennis Krüger

    (Department of Thermo-Chemical Conversion, DBFZ Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany)

  • Özge Çepelioğullar Mutlu

    (Department of Thermo-Chemical Conversion, DBFZ Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany)

Abstract

In this study, a small-scale (4.7 kW fuel ) biomass burner based on “top-lit updraft” (TLUD) technology with automatic process control was developed for process heat generation. The combustion experiments were performed using wood pellets to gain more insights on the process, its repeatability and the behaviors of the emitted gaseous and particulate emissions under different combustion phases. The emission values were compared with similar small-scale combustion technologies as well as the emission limits defined in official regulations. The results showed that the average emissions (based on standardized 13 vol. % O 2 content in the dry flue gas (STP)) over the entire process from start-up to switch-off were 29.4 mg/m 3 for CO, 80 mg/m 3 for NO x , and 3.6 mg/m 3 for total particle matter (TPM) measured within the hot gas. These results were below the official limits for wood-fueled small-scale systems. The developed process control approach resulted in very low residual O 2 content in the flue gas (approx. 2 vol. %), high flue gas temperatures and repetition accuracy. Thus, the process offers potential for further development in terms of process control, scale-up, and application in different areas.

Suggested Citation

  • Dennis Krüger & Özge Çepelioğullar Mutlu, 2021. "Demonstration of a Top-Lit Updraft Based Pyrolytic Burner with Low Emission Operation and Automatic Process Control," Energies, MDPI, vol. 14(13), pages 1-16, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:13:p:3913-:d:585390
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    References listed on IDEAS

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    1. Przemysław Motyl & Danuta Król & Sławomir Poskrobko & Marek Juszczak, 2020. "Numerical Modelling and Experimental Verification of the Low-Emission Biomass Combustion Process in a Domestic Boiler with Flue Gas Flow around the Combustion Chamber," Energies, MDPI, vol. 13(21), pages 1-16, November.
    2. Toklu, E., 2017. "Biomass energy potential and utilization in Turkey," Renewable Energy, Elsevier, vol. 107(C), pages 235-244.
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