Novel Approach to Tar Removal from Biomass Producer Gas by Means of a Nickel-Based Catalyst

Conference paper


The nickel-based catalyst was exposed to the raw gas from gasification of woody biomass with air in a fluidized-bed. After dust removal on a barrier filter and sulphur compounds capture, namely H2S, on an active sorbent made of CuO and ZnO, higher hydrocarbons as tar components were decomposed/reformed on aNi-catalyst. Steam reforming reactions led to decomposition of tar and all hydrocarbons higher than CH4 into mainly H2 and CO which further underwent reaction with steam via the water gas shift reaction to CO2. The reforming reactions caused approximately 10–20 % decrease in the lower heating values of the producer gas from the inlet values 5.0–6.5 MJ m−3. The gas yield increased fromvalues 2.4–2.6 m3 kg−1 to values 2.8–3.0 m3 kg−1 on dry biomass basis. The chosen tar removal concept based on combination of dolomite in the fluidized-bed with the secondary catalytic reactor was proved by 20 hours long experiment in which the finaltar content below 30 mg m−3 was attained corresponding to more than 97 % tar conversion. H2S content in producer gas was expected to be below 100 vol. ppm, bulk of which was captured on the sorbent. Only limited deactivation of thecatalyst by sulphur compounds was found in the front of the catalyst bed where sulphur content was determined as high as 173 wt. ppm compared to 22 wt. ppm in the fresh sample.


catalytic tar removal nickel catalyst steam reforming fluidized-bed biomass gasification 


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  1. Arauzo, J., Radlein, D., Piskorz, J., Scott, D.S.: Energy Fuels 8 (1994), pp. 1192–1196.CrossRefGoogle Scholar
  2. Arena, F., Trunfio, G., Alongi, E., Branca, D. and Parmaliana, A.: Appl. Catal. A-Gen. 266 (2004), pp. 155–162.CrossRefGoogle Scholar
  3. Arena F.: AlChEJ 52(8) (2006), pp. 2823–2831.Google Scholar
  4. Bain, R.L., Dayton, D.C, Carpenter, D.L. Czernik, S.R. et al: Ind. Eng. Chem. Res. 44 (2005), pp. 7945–7956.CrossRefGoogle Scholar
  5. Baker, E.G, Mudge, L.K., Brown, M.D.: Ind. Eng. Chem. Res. 26 (1987), pp. 1335–1339.CrossRefGoogle Scholar
  6. Bangala, D.N., Abatzoglou, N., Chomet, E.: AlChEJ, 44(4) (1998), pp. 927–936.Google Scholar
  7. Chen, Y., Xu, H., Jin, X., Xiong, G.: Catal. Tod., 116 (2006), pp. 334–340.CrossRefGoogle Scholar
  8. Coll, R., Salvado, J., Farriol, X., Montane, D.: Fuel Process. Technol. 74 (2001), pp. 19–31.CrossRefGoogle Scholar
  9. Corella, J., Orio, A., Aznar, P.: Ind. Eng. Chem. Res. 37 (1998), pp. 4617–4624.CrossRefGoogle Scholar
  10. Gebhard, S.C., Wang, D., Overend, R.P., Paisley, M.A.: Biomass Bioenerg. 7 (1994), pp. 307–313.CrossRefGoogle Scholar
  11. Nacken, M., Ma, L., Engelen, K., Heidenreich, S., Baron, GV.: Ind. Eng. Chem. Res. 46 (2007), pp. 1945–1951.CrossRefGoogle Scholar
  12. Pfeifer, C., Hofbauer, H.: Powder Technol. 180 (2008), pp. 9–16.CrossRefGoogle Scholar
  13. Rostrup-Nielsen, J.R.R.: Catalytic Steam Reforming. Berlin: Springer, 130pp. ISBN3-540-12665-1.Google Scholar
  14. Sato, K., Fujimoto, K.: Catal. Commun. 8 (2007), pp. 1697–1701.CrossRefGoogle Scholar
  15. Simell, P.A., Bredenberg, J.B.: Fuel, 69 (1990), pp. 1219–1225.CrossRefGoogle Scholar
  16. Simell, P.A., Hepola, J.D., Krause, A.O.I.: Fuel, 76 (1997), pp. 1117–1127.CrossRefGoogle Scholar
  17. Stevens, D.J.: National Energy Laboratory Report No. NREL/SR-510-29952, USA, 2001,103Google Scholar
  18. Torres, W., Pansare, S.S., Goodwin, J.G: Catal. Rev.-Sci. Eng. 49 (2007), pp. 407–456.Google Scholar
  19. Twigg, M.V. Catalyst Handbook. 2nd ed. London: Manson Publishing. 1996,608 pp. ISBN 1-874545-36-7.Google Scholar
  20. Wang, W., Padban, N., Ye, Z., Olofsson, G..; Andersson, A.: Bjerle, I.: Ind. Eng.Chem. Res. 39 (2000), pp. 4075–4081.CrossRefGoogle Scholar

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© Tsinghua University Press, Beijing and Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Institute of Chemical Process FundamentalsAcademy of Sciences of the Czech RepublicPrague 6-SuchdolCzech Republic

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