期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 39, 期 5, 页码 1143-1154出版社
AMER CHEMICAL SOC
DOI: 10.1021/ie990738t
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Three selected commercial, full-size steam-reforming catalysts for naphthas, BASF Gl-50, lCI 46-1, and Topsoe R-67, are tested at pilot-scale level for hot gas cleanup in biomass gasification in a fluidized bed. Gas composition and tar content in the flue gas are measured before and after the catalytic bed. Variations of the catalytic bed in H-2, CO, CO2, CH4, and H2O contents are reported for different operating conditions. Tar conversions and an apparent first-order kinetics constant for the overall tar removal reaction are-calculated. Tar contents at the exit of the catalytic reactor as low as 10 mg/m(n)(3) are obtained in a test of 50 h-on-stream without noticeable catalyst deactivation. Important variations in tar conversion with space time in the catalytic bed, with H2O/C-* in the flue gas, and with the equivalence ratio in the upstream gasifier are observed. These results obtained at the pilot-scale level and with the use of full-sized commercial catalysts are an important forward step in demonstrating the technical feasibility of the overall biomass gasification process.
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