Evaluation of the Transient Behaviour of a Fixed-Bed Biomass Gasifier for Demand-Oriented Electricity Production

Clemens Hollenstein, Christopher Zemann, Stefan Martini, Markus Gölles, Wolfgang Felsberger, Daniele Antolini, Francesco Patuzzi, Marco Baratieri, Martin Horn

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

Fixed-bed biomass gasification is a promising dispatchable option of renewable energy sources to serve flexibility demands in electricity production. To experimentally investigate this potential, this contribution analyses an industrial small-scale fixed-bed biomass gasification system for demand-oriented electricity production by evaluating the effects of an electric power change in terms of transition duration and control accuracy. Therefore, the steady-state operation at different loads and the transient behaviour of the gasification system during stepwise changes of the electric power are evaluated based on measured and derived process parameters. The results from a great number of test runs performed reveal the potential for rapid changes of the electric power (100 kW to 150 kW in less than 1.5 min), a good stationary accuracy for operations at nominal (150 kW ± 3.7 kW) and partial load (100 kW ± 5.1 kW), and hardly any negative effects on the gasification performance (e.g. cold gas efficiency and equivalence ratio remain almost constant during load changes). However, results from partial load reveal an increase in process fluctuations due to the control strategy used. To unleash the systems’ full potential of flexibility, a more advanced control strategy should be applied
Original languageEnglish
Title of host publicationProceedings of the 28th European Biomass Conference and Exhibition
Pages464 - 476
DOIs
Publication statusPublished - 6 Jul 2020
Event28th European Biomass Conference and Exhibition - Marseille / Online, Virtuell, France
Duration: 6 Jul 20209 Jul 2020

Conference

Conference28th European Biomass Conference and Exhibition
Abbreviated titleEUCBE 2020
Country/TerritoryFrance
CityVirtuell
Period6/07/209/07/20

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