Abstract
This article reports the experimental results of rapid or fast pyrolysis of pine sawdust in a bench-scale plant equipped mainly with a fluidized-bed reactor and a hot vapor filtration unit. The influence of pyrolysis temperature on product distribution was investigated. In each experiment, the mass balance was established and the chemical and physical characteristics of the products were examined. Fast pyrolysis experiments were conducted at a temperature range of 400–500°C using a biomass particle size of 250–425 µm. Results showed that the optimal reaction temperature for bio-oil production was 462°C. The maximum bio-oil yield was approximately 68.4 wt%. The density of bio-oil was found to be 1.2 g/ml. The lower heating value of the bio-oil was 18.2 MJ/kg, while the pH values of the bio-oil were approximately 2.5. The solids and ash contents of bio-oil were 0.3 and 0.01 wt%, respectively.
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