1. Institute of Chemical Engineering page 1 Achema 2012 Chemical Process Engineering Working group Gasification & Gas Cleaning Contact: christoph.pfeifer@tuwien.ac.at

2. Institute of Chemical Engineering page 2 Achema 2012 Chemical Process Engineering Working group Gasification & Gas Cleaning Content Working group Gasification and Gas Cleaning Dual fluidised bed gasification fundamentals Design development Industrial application Catalytic tar removal Contacts

3. Institute of Chemical Engineering page 3 Achema 2012 Chemical Process Engineering The GGC team focuses on projects from the energy technology sector with a specification on gasification technologies as well as catalytic tar removal from producer gas originating from thermo-chemical hydrocarbon conversion processes. Mission: Development of fuel flexible, high efficient gasification technologies for the production of high quality syngas. Research topics: Dual fluidized bed steam gasification of biomass, coal, waste materials Producer gas adaptation by catalytically active bed material Catalytic reforming of hydrocarbons in secondary fixed bed units Development of a new gasification process based on the dual fluidized bed process Pressurized gasification Working group Gasification & Gas Cleaning

4. Institute of Chemical Engineering page 4 Achema 2012 Chemical Process Engineering Biomass Steam Gasification Syngas Electricity Fuels Heating/ Cooling Thermal Gasification, Biomass combined heat and power plant in Guessing, Austria

5. Institute of Chemical Engineering page 5 Achema 2012 Chemical Process Engineering DFB Gasification – Principle of the process I SteamAir Biomass Gasification (~ 850 °C) Combustion (~ 920 °C) Producer Gas (CH 4, CO, H 2, CO 2, H 2 O) Flue gas Circulation (bed material, char coal) Heat Fuel to combustion

6. Institute of Chemical Engineering page 6 Achema 2012 Chemical Process Engineering DFB Gasification – Principle of the process I SteamAir Biomass Circulation (bed material, char coal) Heat Fuel to combustion CaCO 3 CaO Producer gas (H 2 -rich) Flue gas (+CO 2 ) Gasification +absorption 600…700°C 850…900°C Combustion +desorption Dual fluidised bed steam gasification of solid biomass coupled with CO 2 capture CaO + CO 2 ↔ CaCO 3

7. Institute of Chemical Engineering page 7 Achema 2012 Chemical Process Engineering DFB Gasification – Principle of the process II Typical producer gas composition ComponentUnitConventional processSER process * H2H2 vol.-% db 36 … 4255 … 70 COvol.-% db 19 … 245 … 11 CO 2 vol.-% db 20 … 257 … 20 CH 4 vol.-% db 9 … 128 … 13 C2H4C2H4 vol.-% db 2.0 … 2.61.4 … 1.8 C2H6C2H6 vol.-% db 1.3 … 1.80.3 … 0.6 C 3 -Fract.vol.-% db 0.3 … 0.60.3 … 1.0 Targ/Nm³ db 4 … 80.3 … 0.9 Dustg/Nm³ db 10 … 2020 … 50 H2OH2Ovol.-%30 … 4550 … 60 Fuelwood pellets Bed materialOlivineCalcite * SER: Sorption enhanced reforming

8. Institute of Chemical Engineering page 8 Achema 2012 Chemical Process Engineering Design development I 1993-1996, „FICFB* gasifier“ * Fast Internally Circulating Fluidized Bed

9. Institute of Chemical Engineering page 9 Achema 2012 Chemical Process Engineering Design development II 1999-2003 2004-now

10. Institute of Chemical Engineering page 10 Achema 2012 Chemical Process Engineering Investigations on a novel fluidized bed concept 10 Applied Modelling, Vienna, Austria 2012-03-27 J.C. Schmid Advanced DUAL FLUID gasifier

11. Institute of Chemical Engineering page 11 Achema 2012 Chemical Process Engineering Details of the countercurrent gasification reactor 11 Applied Modelling, Vienna, Austria 2012-03-27 J.C. Schmid Advanced DUAL FLUID gasifier

12. Institute of Chemical Engineering page 12 Achema 2012 Chemical Process Engineering Industrial application Güssing, Austria in operation since 2002 8.0 MW th, 2.0 Mw el gas engine Oberwart, Austria in operation since 2008 8.5 MW th, 2.8 Mw el gas engine, organic rankie cycle (ORC) Plants under commissioning: Villach, Austria - 15 MW th, 3.7 Mw el, gas engine Klagenfurt, Austria - 25 MW th, 5.5 Mw el, gas engine, ORC Ulm, Germany - 15 MW th, 5.3 Mw el, gas engine, ORC Plants in planning: Gothenborg, Sweden - 30 MW th, 20 Mw el, Synthetic Natural Gas (SNG) production of 67%

13. Institute of Chemical Engineering page 13 Achema 2012 Chemical Process Engineering Catalytic tar removal Photographer Hans Ringhofer Test rig 2 stage reformer 4 & 4 honeycomb catalysts 100 Nm³/h ~ 900°C Atmospheric pressure Aims: Long term tests of catalytic gas cleaning with real product gas from an industrial DFB-steam gasifier (Güssing) To find selective catalysts for reforming hydrocarbons - except Methane => BioSNG To find selective catalysts for reforming hydrocarbons - especially Methane => Fischer- Tropsch To find best process parameters regarding lifetime and reforming potential of the catalysts.

14. Institute of Chemical Engineering page 14 Achema 2012 Chemical Process Engineering Further information Links: http://www.vt.tuwien.ac.at http://www.vt.tuwien.ac.at/chemische_verfahrenstechnik_und_wirbelschicht technik/gasification_and_gas_cleaning/ Contact: Dr. Christoph PFEIFER Email: christoph.pfeifer@tuwien.ac.at Tel.: +43 1 58801 166305 FAX:+43 1 58801 16699