Efficient Tar Removal from Biomass Producer Gas at Moderate Temperatures via Steam Reforming on Nickel-based Catalyst

0330710 - ÚCHP 2010 DE eng C - Conference Paper (international conference)
Vosecký, Martin - Kameníková, Petra - Pohořelý, Michael - Skoblia, Sergej - Punčochář, Miroslav
Efficient Tar Removal from Biomass Producer Gas at Moderate Temperatures via Steam Reforming on Nickel-based Catalyst.
Proceedings. -: -, 2009, s. 862-866. ISBN N.
[European Biomass Conference and Exhibition /17./. Hamburg (DE), 29.06.2009-03.07.2009]
R&D Projects: GA ČR(CZ) GA104/07/0977; GA MŠMT 2B08048
Grant - others:RFCR(XE) CT/2007/00005
Institutional research plan: CEZ:AV0Z40720504
Keywords : tar removal * catalytic conversion * biomass gasification
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
www.conference-biomass.com

The present work deals with tar removal from biomass producer gas by means of a nickel-based catalyst at temperatures about 500 °C. The proposed concept has been firstly verified by the laboratory-scale experiments in which benzene, toluene and naphthalene were chosen as tar model compounds. It has been observed at about 500 °C, GHSV > 25 000 h–1 and H2O/C = 18 mol mol–1 that conversions of all tar model compounds higher than 95 % can be gained. Secondly, experiments with real producer gas have been performed. A side stream of hot raw producer gas was dedusted in the first reactor at temperatures 550–600 °C. Gas was exposed to the chosen-nickel based catalyst at about 500 °C, GHSV = 3360–6000 h–1 and H2O/C = 5–6 mol mol–1. It has been found, that hydrocarbons higher than methane including tar species were decomposed into H2 and CO2. Tar species were effectively decomposed from more than 3 g m–3 to less than 17 mg m–3 which corresponds to conversions higher than 99 %.
Permanent Link: http://hdl.handle.net/11104/0176429