Dynamic modeling of a stratified fixed-bed gasification system
DOI:
https://doi.org/10.33131/24222208.380Keywords:
Biomass, fixed bed gasification, control, dynamic modelingAbstract
Since gasification allows syngas production from carbonaceous materials, this technology has been gaining worldwide interest. Gas from gasification has low energy content, but it is easy to use as fuel for internal combustion engines. Since the low-power fixed bed gasification equipment usually does not have control systems for flame front position, they are frequently prone to instability in performance when there are changes in the biomass properties. Consequently, a dynamic model was carried out to facilitate the development of control strategies. The studied model improves the precision when predicting parameters such as the response of the flame front velocity after disturbances in the gasifying agent flow and the density and humidity of the biomass. This model uses first-order plus dead time transfer functions whose constants are derived from experimental studies reported in the literature. Such a development constitutes an essential tool for diagnosing the process and designing control strategies focused on fixed-bed gasification technology.
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