Title:
Integrated Gas Cleaning Concept for the Use of Product Gas from an Updraft Gasifier in an SOFC
Author(s):
Supancic, K., Sitzmann, J., Blank, M., Petermeier, P., Schlögl, C., Obernberger, I.
Document(s):
Paper
Abstract:
In the medium to large capacity range (0.2 up to 10 MWel), proven biomass-based combined heat and power production (CHP) technologies are available based on steam turbine cycles, ORC (Organic Rankine Cycle) and biomass gasifiers combined with gas engines. However, the current systems show two major drawbacks, a restricted fuel flexibility, especially regarding the utilisation of agricultural residues, and limited electric efficiencies (e.g. medium-scale CHP systems reach 14 to 27%). To overcome these drawbacks the R&D project HiEff-BioPower aimed at the development of a new innovative biomass CHP technology based on updraft gasification, a novel high-temperature gas cleaning concept and a solid oxide fuel cell (SOFC) combined in an integrated plant concept. The main features of the HiEff-BioPower technology should be a high biomass fuel flexibility (wood fuels, SRC, selected agricultural residues), a high efficiency (about 36% electric and 90% overall efficiency) and equal-zero harmful emissions (regarding CO, OGC, PM, NOx) with a capacity range suitable for decentralised applications (0.5 MW up to 10 MW total power output). While low CO and OGC emissions are a matter of complete combustion, low NOx emissions are possible as NOx precursors in the product gas (especially NH3) are used as fuel in the SOFC at high utilisation rates. One of the main challenges was to provide a product gas with low S, Cl, tar and dust contents that is suitable for utilisation in an SOFC. This goal was achieved by implementing an integrated gas cleaning concept consisting of primary (partial product gas oxidation to reduce tars) and secondary measures (dry sorption, high temperature filtration and catalytic tar reforming).
Keywords:
catalytic conversion, gas cleaning, gasification, tar removal, filtration, dry sorption
Topic:
Plenaries
Subtopic:
Technology Innovation for Biomass Conversion to Bioenergy
Event:
30th European Biomass Conference and Exhibition
Session:
CP.1.1
Pages:
9 - 18
ISBN:
978-88-89407-22-6
Paper DOI:
10.5071/30thEUBCE2022-CP.1.1
Price:
FREE
