Abstract
This paper introduces the tests and operation performance analysis of a 1-MW-scale biomass gasification and electric power generation system. The experimental data indicate that operation temperature of the gasifier and ratios of air to fuel have a strong impact on gasification efficiency, conversion efficiency of carbon, gas productivity, gas composition, and its low heating value (LHV). The optimal operation parameters for wood powder feed are temperature 780 °C, the equivalence ratio (ER): 0.26, 70% gasification efficiency, 80% conversion efficiency of carbon, and LHV 5.8 MJ/m3. During the experiment, it was found that fly ash carried by fuel gas and tar produced during biomass gasification are the main factors affecting continuous operation of the electric generation system; the loss of sensible heat and carbon of fly ash lead to the low efficiency of electric power generation. The pollutant emission and effect of catalyst on tar cracking are also investigated. The results provide information for the...
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