Modelling and measurements of heat transfer in charcoal from pyrolysis of large wood particles

Oxidative pyrolysis of integral softwood pellets

“…This contrasts with results for burning of solid wood [10]. The difference may be explained by a low thermal conductivity in solid wood during burning [15], whereas the space between the small wood particles in pellets may permit rapid heat and gas transfer. The proportion of oxygen and hydrogen relative to carbon is low for all the assessed compounds.…”

Packed bed combustion of non-uniformly sized char particles

“…Since a I and A CO 2 are multiplied together both in the reaction rate and in the definition of the Thiele modulus, it is their product which determines the overall rate rather than their individual values. The porosity and pore tortuosity were taken from the work of Peters (2002) and Larfeldt et al (2000). There is not much literature on the pyrolysis of charcoal, and what is available deals with chars with much larger volatile contents than the present fuels (Branca and Di Blasi, 2003;Várhegyi et al, 2002).…”

Benzene emitted from glowing charcoal

“…The density was lowest for the Swedish charcoal and highest for the compressed charcoal briquettes which may cause other observed differences. The structural and heat transport properties of charcoal produced from solid firewood have been described (Larfeldt et al, 2000). Softwood pellets are made from compressed sawdust and are increasingly used for residential heating (Olsson et aI., 2002).…”