Publication | Peer reviewed papers | Potentiale, Bioenergiesysteme, Logistik

Assessment of measurement methods to characterize the producer gas from biomass gasification with steam in a fluidized bed

Published 2022

Citation: Anca-Couce A, von Berg L, Pongratz G, Scharler R, Hochenauer C, Geusebroek M, Kuipers J, Vilela CM, Kraia T, Panopoulos K, Funcia I, Dieguez-Alonso A, Almuina-Villar H, Tsiotsias T, Kienzl N, Martini S. Assessment of measurement methods to characterize the producer gas from biomass gasification with steam in a fluidized bed. Biomass and Bioenergy 2022.163:106527

Abstract

Measuring the producer gas from biomass gasification is very challenging and the use of several methods is required to achieve a complete characterization. Various techniques are available for these measurements, offering very different affordability or time demand requirements and the reliability of these techniques is often unknown. In this work an assessment of commonly employed measuring methods is conducted with a round robin. The main permanent gases, light hydrocarbons, tars, sulfur and nitrogen compounds were measured by several partners employing a producer gas obtained from fluidized bed gasification of wood and miscanthus with steam. Online and offline methods were used for this purpose and their accuracy, repeatability and reproducibility are here discussed. The results demonstrate the reliability of gas chromatography for measuring the main permanent gases, light hydrocarbons, benzene and H2S, validating the obtained results with other methods. An online method could also measure NH3 with a reasonable accuracy, but deviations were present for compounds at even lower concentrations. Regarding tar sampling and analysis, the main source of variability in the results was the analysis of the liquid samples, especially for heavier compounds. The presented work pointed out the need for a complementary use of several techniques to achieve a complete characterization of the producer gas from biomass gasification, and the suitability of certain online techniques as well as their limitations.

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