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Pyrolysis of Sawdust in a Conical Spouted Bed Reactor. Yields and Product Composition

2000; American Chemical Society; Volume: 39; Issue: 6 Linguagem: Inglês

10.1021/ie990309v

1520-5045

Roberto Aguado, Martı́n Olazar, Marı́a J. San José, Gorka Aguirre, Javier Bilbao,

Thermochemical Biomass Conversion Processes

The performance of original equipment provided with a conical spouted bed reactor has been studied in flash pyrolysis of sawdust with an inert gas (N2) in the 350−700 °C range and with 50 ms of average gas residence time. The effect of pyrolysis temperature on the yields of gas, liquid, and char on gas and liquid composition and on char properties has been studied. The maximum yield of liquid (corresponding to 70 wt %) is obtained at 450 °C and its composition determined by GC/MS is similar to that reported in the literature for bubbling fluidized beds. Although temperatures above 600 °C are required for the development of the char porous structure, the yield of CO2 obtained under these conditions is unacceptable.