GP - Gussing Gasifier Plant
The Dual Fluidized Bed ( DFB ) Gasifier developed by Gussing Renewable GmbH (GRE) with the technology introduced by Vienna University of Technology, is considered as the most sophisticated process for the production of gas from renewable resources in the world and is state of the art. At the heart of the FICFB (Fast Internally Circulating Fluidized Bed) reactor are two interconnected fluidized bed reactors. In one, the gasification reactor, feedstock together with water vapor produces a nearly nitrogen-free, low-tar gas with high calorific value in a circulating fluidized bed at ~850° C. Coke from gasification and process residues, such as tar, are burned in the other,i.e. the combustion chamber, at ~930° C.
Processing Technology
Here the bed material (olivin sand) circulating between the two fluidized beds is heated. The bed material transfers most of the heat generated in the combustion chamber into the gasification reactor. This method achieves significantly reduced emissions compared to oxidative processes (combustion). The resulting raw gas is cooled in two stages. The heat from this process step can drive an ORC or thermoelectric generator to produce electricity. Dust is filtered from the gas and tar is washed out with biodiesel. The final product is a valuable and versatile syngas.
Residual heat can be effectively utilized for district heating ,powering cold storage or chilling plant , or hot water for boiler feeding.
Applications
Polygeneration
Polygeneration, the generation of multiple products from one renewable feedstock, is a unique feature of the GRE Multifuel Gasification Plant. The syngas can be used in a polygeneration application, such as an internal combustion engine with a generator, to reliably produce renewable electricity for base load as well as for balancing, independent of weather conditions or time of day. Alternatively, after additional gas treatment the syngas becomes the source material for renewable synthetic transport fuel and renewable synthetic natural gas (Bio-SNG).
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