Working group Gasification & Gas Cleaning hermann.hofbauer@tuwien.ac.at Institute of Chemical Engineering page 1
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 Institute of Chemical Engineering page 2
Working group Gasification & Gas Cleaning 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 Institute of Chemical Engineering page 3
Biomass Steam Gasification Heating/ Cooling Electricity Syngas Thermal Gasification, Biomass combined heat and power plant in Guessing, Austria Fuels Institute of Chemical Engineering page 4
DFB Gasification Principle of the process I Producer Gas (CH 4, CO, H 2, CO 2, H 2 O) Flue gas Heat Gasification Combustion Biomass (~ 850 C) (~ 920 C) Fuel to combustion Steam Circulation (bed material, char coal) Air Institute of Chemical Engineering page 5
DFB Gasification Principle of the process I Dual fluidised bed steam gasification of solid biomass coupled with CO 2 capture Producer gas (H 2 -rich) Flue gas (+CO 2 ) Heat Gasification CaO Combustion Biomass +absorption 600 700 C CaCO 3 +desorption 850 900 C Fuel to combustion Circulation Steam (bed material, char coal) Air CaO + CO 2 CaCO 3 Institute of Chemical Engineering page 6
DFB Gasification Principle of the process II Typical producer gas composition Component Unit Conventional process SER process * H 2 vol.-% db 36 42 55 70 CO vol.-% db 19 24 5 11 CO 2 vol.-% db 20 25 7 20 CH 4 vol.-% db 9 12 8 13 C 2 H 4 vol.-% db 2.0 2.6 1.4 1.8 C 2 H 6 vol.-% db 1.3 1.8 0.3 0.6 C 3 -Fract. vol.-% db 0.3 0.6 0.3 1.0 Tar g/nm³ db 4 8 0.3 0.9 Dust g/nm³ db 10 20 20 50 H 2 O vol.-% 30 45 50 60 Fuel wood pellets wood pellets Bed material Olivine Calcite * SER: Sorption enhanced reforming Institute of Chemical Engineering page 7
Design development I 1993-1996, FICFB* gasifier * Fast Internally Circulating Fluidized Bed Institute of Chemical Engineering page 8
Design development II 1999-2003 2004-now Institute of Chemical Engineering page 9
10 Applied Modelling, Vienna, Austria 2012-03-27 J.C. Schmid Advanced DUAL FLUID gasifier Investigations on a novel fluidized bed concept Institute of Chemical Engineering page 10
11 Applied Modelling, Vienna, Austria 2012-03-27 J.C. Schmid Advanced DUAL FLUID gasifier Details of the countercurrent gasification reactor Institute of Chemical Engineering page 11
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% Institute of Chemical Engineering page 12
Catalytic tar removal 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. Test rig Photographer Hans Ringhofer 2 stage reformer 4 & 4 honeycomb catalysts 100 Nm³/h ~ 900 C Atmospheric pressure Institute of Chemical Engineering page 13
Links: http://www.vt.tuwien.ac.at Further information http://www.vt.tuwien.ac.at/chemische_verfahrenstechnik_und_wirbelschicht technik/gasification_and_gas_cleaning/ Contact: Univ.Prof. Dr. Hermann HOFBAUER Email: hermann.hofbauer@tuwien.ac.at Tel.: +43 1 58801 166300 Institute of Chemical Engineering page 14