Energies (Jan 2023)

The Experimental Study of the Efficiency of the Gasification Process of the Fast-Growing Willow Biomass in a Downdraft Gasifier

  • Savelii Kukharets,
  • Algirdas Jasinskas,
  • Gennadii Golub,
  • Olena Sukmaniuk,
  • Taras Hutsol,
  • Krzysztof Mudryk,
  • Jonas Čėsna,
  • Szymon Glowacki,
  • Iryna Horetska

DOI
https://doi.org/10.3390/en16020578
Journal volume & issue
Vol. 16, no. 2
p. 578

Abstract

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In this work, a study was performed on the influence of the ratio of height to the diameter of the reduction zone of a small-size downdraft gasifier as well as of the fuel fraction sizes on the gas quality (the quality was evaluated for CO content). The ratio of a full side area to the volume of a fuel fraction (SVR) was used as a fuel parameter. The maximum CO concentration was observed when using a small fuel fraction with SVR—0.7–0.72 mm−1 and when adhering to the ratio of height to the diameter of the reduction zone H/D—0.5–0.6. The maximum electric power for gasoline generators (nominal power equaled 4 kW) when using the gas received from the fast-growing hybrid willow biomass equaled 2.4 kW. This power is 37.5% lower than when using gasoline and 7.0% lower than when using the gas received from the hardwood biomass. The emissions of harmful gases into the atmosphere by the gasoline generator engine equaled 0.12–0.14% CO and 24–27 mln−1 CxHy. The emissions were 64.8 times less for CO and 8.5 times less for CxHy when compared with using gasoline.

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