Results are reported for the continuous steam gasification of biomass in a fluidized-bed reactor equipped with a catalytic ceramic candle filter in the freeboard. The filter, a silicon carbide based element (DIASCHUMALITH)with a mullite outer membrane, was used as a carrier for a MgO-Al2O3-supported Ni catalyst. Tar in the product gas was monitored for gasification runs performed using both catalytic and non catalytic candle filters over a temperature range of 675-840 °C. It was found that the catalytic candles had the effect of raising the gas yield from 1.35 to 1.55 N m3 per kg of dry biomass and converting 58% of the product tar and 23% of the product methane.

In Situ Catalytic Ceramic Candle Filtration for Tar Reforming and Particulate Abatement in a Fluidized-Bed Biomass Gasifier

GALLUCCI, KATIA;FOSCOLO, Pier Ugo;
2009

Abstract

Results are reported for the continuous steam gasification of biomass in a fluidized-bed reactor equipped with a catalytic ceramic candle filter in the freeboard. The filter, a silicon carbide based element (DIASCHUMALITH)with a mullite outer membrane, was used as a carrier for a MgO-Al2O3-supported Ni catalyst. Tar in the product gas was monitored for gasification runs performed using both catalytic and non catalytic candle filters over a temperature range of 675-840 °C. It was found that the catalytic candles had the effect of raising the gas yield from 1.35 to 1.55 N m3 per kg of dry biomass and converting 58% of the product tar and 23% of the product methane.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11697/2580
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