Catalytic reforming of volatiles from woody biomass pyrolysis was performed in a two-stage fixed-bed reactor over a prepared nickel-loaded on lignite char and a limonite under inert, reducing and steam-reforming conditions at a low temperature of 450 oC. The results show that most of the volatiles released were converted to tarry materials in the absence of catalyst. The reforming of biomass volatiles significantly depended on nickel-loading and atmosphere. The increasing in the nickel-loading below 20wt% causes the enhancement of its activity for tar decomposition at 450 oC. Steam introduction significantly promotes the tar reforming and gives a H2-rich gas in high yield. Almost all the carbonaceous gases are converted to CH4 when reforming of biomass volatiles under H2 atmosphere. The limonite filling in the bottom of the Ni-based catalyst can absorb and further reform the residual tarry material from Ni-reforming bed and give a tar-free gas in high yield. Such an approach may lead to the development of low-temperature biomass gasification technology.

Low-temperature catalytic reforming of volatiles from biomass pyrolysis

249th National Meeting (2015)

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